From e7324a5c6a2f6743cea8aebac256d15a1b746216 Mon Sep 17 00:00:00 2001
From: Jeff Parsons <Jeff@pcjs.org>
Date: Sun, 14 Aug 2016 10:52:24 -0700
Subject: [PATCH] VT100 SET-UP screen is accessible now

---
 .../pc8080/machine/vt100/debugger/README.md   |    20 +-
 .../pc8080/machine/vt100/debugger/machine.xml |     2 +-
 devices/pc8080/machine/vt100/machine.xml      |     2 +-
 devices/pc8080/rom/vt100/VT100.asm            |   171 +-
 devices/pc8080/rom/vt100/VT100.lst            | 10252 ++++++++--------
 modules/pc8080/lib/chipset.js                 |    32 +-
 modules/pc8080/lib/keyboard.js                |    57 +-
 modules/pc8080/lib/video.js                   |    65 +-
 versions/pc8080/1.23.3/pc8080-dbg.js          |   459 +-
 versions/pc8080/1.23.3/pc8080.js              |   321 +-
 10 files changed, 5757 insertions(+), 5624 deletions(-)

diff --git a/devices/pc8080/machine/vt100/debugger/README.md b/devices/pc8080/machine/vt100/debugger/README.md
index 0121c57f7..888a44eca 100644
--- a/devices/pc8080/machine/vt100/debugger/README.md
+++ b/devices/pc8080/machine/vt100/debugger/README.md
@@ -1,6 +1,6 @@
 ---
 layout: page
-title: DEC VT100 Terminal
+title: DEC VT100 Terminal with Debugger
 permalink: /devices/pc8080/machine/vt100/debugger/
 machines:
   - type: pc8080
@@ -13,10 +13,22 @@ DEC VT100 Terminal with Debugger
 
 The [PC8080](/modules/pc8080/) machine below is configured to simulate a [VT100 Terminal](/devices/pc8080/machine/vt100/)
 with a Control Panel and Debugger.  It is running the original [VT100 Firmware](/devices/pc8080/rom/vt100/) inside the
-[PC8080](/modules/pc8080/) CPU emulator.
+[PC8080](/modules/pc8080/) CPU emulator.  You'll also find assorted [Hardware Notes](#vt100-memory-usage) below.
 
-Click the "Run" button to start the simulation.  You'll also find assorted
-[Hardware Notes](#vt100-memory-usage) below.
+Click the "Run" button to start the simulation.  The VT100 KEYMAP table in [keyboard.js](/modules/pc8080/lib/keyboard.js)
+maps modern keys to VT100 key addresses, and most of the mappings are 1-1.  Function keys are mapped as follows:
+
+- F1: PF1
+- F2: PF2
+- F3: PF3
+- F4: PF4
+- F5: KEYPAD COMMA
+- F6: BREAK
+- F7: LINE FEED
+- F8: NO SCROLL
+- F9: SET-UP
+
+The simulation is not fully operational yet, but it is now possible to access the SET-UP screen.
 
 {% include machine.html id="vt100" %}
 
diff --git a/devices/pc8080/machine/vt100/debugger/machine.xml b/devices/pc8080/machine/vt100/debugger/machine.xml
index 746f1226a..876e6ccc4 100644
--- a/devices/pc8080/machine/vt100/debugger/machine.xml
+++ b/devices/pc8080/machine/vt100/debugger/machine.xml
@@ -3,7 +3,7 @@
 <machine id="vt100" class="pc8080" border="1" pos="center" background="#FAEBD7">
 	<name pos="center">VT100 Terminal</name>
 	<computer id="computer" busWidth="16"/>
-	<cpu id="cpu8080" model="8080" cycles="2764800"/>
+	<cpu id="cpu8080" model="8080" cycles="1000000"/>
 	<rom id="rom" addr="0x0000" size="0x2000" file="/devices/pc8080/rom/vt100/VT100.json"/>
 	<ram id="ram" addr="0x2000" size="0x0C00"/>
 	<video id="video" screenWidth="1600" screenHeight="960" smoothing="false" interruptRate="60"
diff --git a/devices/pc8080/machine/vt100/machine.xml b/devices/pc8080/machine/vt100/machine.xml
index 5a498fb10..b47d52e02 100644
--- a/devices/pc8080/machine/vt100/machine.xml
+++ b/devices/pc8080/machine/vt100/machine.xml
@@ -3,7 +3,7 @@
 <machine id="vt100" class="pc8080" border="1" pos="center" background="#FAEBD7">
 	<name pos="center">VT100 Terminal</name>
 	<computer id="computer" busWidth="16"/>
-	<cpu id="cpu8080" model="8080" cycles="2764800"/>
+	<cpu id="cpu8080" model="8080" cycles="1000000"/>
 	<rom id="rom" addr="0x0000" size="0x2000" file="/devices/pc8080/rom/vt100/VT100.json"/>
 	<ram id="ram" addr="0x2000" size="0x0C00"/>
 	<video id="video" screenWidth="1600" screenHeight="960" smoothing="false" interruptRate="60"
diff --git a/devices/pc8080/rom/vt100/VT100.asm b/devices/pc8080/rom/vt100/VT100.asm
index 5ef6426ed..2e47f92d4 100644
--- a/devices/pc8080/rom/vt100/VT100.asm
+++ b/devices/pc8080/rom/vt100/VT100.asm
@@ -6,60 +6,75 @@
 ;   work at https://github.com/phooky/VT100-Hax/blob/master/ROMs/haxrom.d80 and http://vt100romhax.tumblr.com
 ;
 ;   All other comments/annotations by Jeff Parsons (@jeffpar) <Jeff@pcjs.org>
+;
+
+;
+;   Data area definitions
+;
+stack_top	equ	204eh
+scratch_start	equ	204eh
+cursor_countdn	equ	212dh
+cursor_visible	equ	21bah
+
+;
+; Reset vector
 ;
 	org	0
-
-X0000:	di
-	lxi	sp,X204e
-	jmp	X003b
-
+	di
+	lxi	sp,stack_top		; SP = 0x204e
+	jmp	reset
+;
+; Interrupt vector 0x1 for Keyboard
+;
 	org	8
-;
-; Interrupt vector 0x1 for keyboard
-;
-X0008:	call	X00fd
+	call	X00fd
 	ei
 	ret
-
-X000d:	nop
-
+;
+; Interrupt vector 0x2 for PUSART
+;
 	org	10h
-
 	call	X03cc
 	ei
-X0014:	ret
-
-	nop
-
+	ret
+;
+; Interrupt vector 0x3 for Keyboard and PUSART
+;
 	org	18h
-
 	call	X03cc
 	call	X00fd
 	ei
 	ret
-
+;
+; Interrupt vector 0x4 for Video (vertical retrace)
+;
+	org	20h
 	call	X04cf
 	ret
-
-	nop
-
+;
+; Interrupt vector 0x5 for Keyboard and Video
+;
 	org	28h
-
 	call	X04cf
 	ret
-
-	nop
-
+;
+; Interrupt vector 0x6 for PUSART and Video
+;
 	org	30h
-
 X0030:	call	X03cc
 	call	X04cf
 	ei
 	ret
-
+;
+; Interrupt vector 0x7 for Keyboard and PUSART and Video
+;
+	org	38h
 	jmp	X0030
 
-X003b:	mvi	e,1
+;
+; Beginning of power-up (reset) code at 0x003b
+;
+reset:	mvi	e,1
 X003d:	di
 	mvi	a,0fh
 	out	62h		;; 0x0f to NVR latch
@@ -233,7 +248,7 @@ X00fd:	push	psw
 	sui	7ch		;; subtract 0x7c from a
 	jm	X011a		;; jump to 011a if a is a normal key
 	mov	h,a		;; otherwise h <- a
-X0109:	inr	h		;; h++
+	inr	h		;; h++
 	mvi	a,10h		;; a <- 0x10
 	rrc
 X010d:	rlc
@@ -370,7 +385,7 @@ X01ff:	lxi	h,X0812
 X020e:	sui	41h
 	mov	b,a
 X0211:	mov	a,m
-X0212:	jz	X0222
+	jz	X0222
 	dcr	b
 	jz	X0226
 	dcr	b
@@ -408,7 +423,7 @@ X0245:	mov	a,c
 	jmp	X0812
 
 X0251:	di
-	lxi	sp,X204e
+	lxi	sp,stack_top		; SP = 0x204e
 	lxi	h,2000h
 	push	h
 	mov	a,m
@@ -447,10 +462,10 @@ X0298:	call	X0bf2
 ;;
 ;;  Zero all scratch and screen RAM above stack
 ;;
-X02a4:	lxi	h,X204e		;; HL <- 0x204e (top of stack)
-	lxi	d,X0fb2		;; DE <- 0x0fb2
-	mvi	b,0		;; B  <- 0
-	call	X1083		;; memset(0x204e,0,0xfb2)
+X02a4:	lxi	h,scratch_start	;; HL = 0x204e (just above stack)
+	lxi	d,0fb2h		;; DE = 0x0fb2 (every byte from 0x204e up to 0x3000)
+	mvi	b,0		;; B = 0
+	call	memset		;; memset(0x1083): set 0x0fb2 bytes to 0 starting at 0x204e
 	cma			;; invert A
 	sta	X2104		;; store A in 0x2104
 	lxi	h,X2004		;; HL <- 0x2004
@@ -469,7 +484,7 @@ X02c0:	call	X0a15		;; 0x2140 = 0xe605
 	lxi	h,X3000		;; HL = 0x3000
 	lxi	d,X1000		;; DE = 0x1000
 	mvi	b,0ffh		;; B = 0xFF
-	jmp	X1083		;; Set all of attribute RAM to 0xFF and return
+	jmp	memset		;; invoke memset(0x1083) to set all of attribute RAM to 0xFF and return
 ;;
 ;;  0x02d9 through 0x02eb are the initial values for the screen RAM;
 ;;  it's copied into low RAM at 0x2000 during init.
@@ -484,8 +499,8 @@ X02d9:
 ;;
 ;;  Initialize several scratch values. We don't know what all of these are for yet.
 ;;
-X02eb:	lxi	h,X0212		;; HL = 0x0212
-	shld	X212d		;; Store 0x1202 at 0x212d
+X02eb:	lxi	h,212h		;; HL = 0x0212 (530.)
+	shld	cursor_countdn	;; Store 0x0212 at cursor_countdn [0x212d]
 	mvi	a,35h		;; A = 0x35
 	sta	X212c		;; 0x212c = 0x35
 	mvi	a,1		;; A = 1
@@ -504,7 +519,7 @@ X02eb:	lxi	h,X0212		;; HL = 0x0212
 	sta	X2079		;; else store 1 in 0x2079
 X031a:	mvi	a,0ffh		;; A = 0xff
 	sta	X210e		;; 0x210e = 0xff
-	sta	X21ba		;; 0x21ba = 0xff
+	sta	cursor_visible	;; set cursor_visible [0x21ba] to 0xff (initially visible)
 	mvi	h,80h		;; H = 0x80
 	mov	l,h		;; L = 0x80
 	shld	X20c0		;; Store 0x8080 at 0x20c0
@@ -1592,7 +1607,7 @@ X0a7b:	inx	sp
 
 	mvi	a,48h
 	sta	X207e
-	lxi	h,X0000
+	lxi	h,0
 	shld	X2130
 	pop	h
 X0aa2:	lxi	h,X0a15
@@ -2405,7 +2420,7 @@ X0fae:	cmp	m
 	rz
 	push	h
 	push	psw
-X0fb2:	lda	X207b
+	lda	X207b
 	ora	a
 	cz	X1488
 	pop	psw
@@ -2415,11 +2430,11 @@ X0fb2:	lda	X207b
 ; End of main loop?
 ;
 
-X0fbe:	lhld	X204e
+X0fbe:	lhld	scratch_start	; HL = [0x204e]
 	mov	a,h
 	ori	0f0h
 	mov	h,a
-	shld	X204e
+	shld	scratch_start	; update [0x204e]
 X0fc8:	lda	X2050
 X0fcb:	mov	b,a
 	mov	a,h
@@ -2525,15 +2540,14 @@ X1074:	call	X13e3
 	shld	X214e
 	ret
 ;;
-;; memset: Set memory from HL to HL+DE-1 to value B
+;; memset(0x1083): Set DE bytes at address HL to B
 ;;
-memset:
-X1083:	mov	m,b		;; M <- B
+memset:	mov	m,b		;; M <- B
 	inx	h		;; HL++
 	dcx	d		;; DE--
 	mov	a,d		;;
 	ora	e		;; A = D | E
-	jnz	X1083		;; repeat if A != 0
+	jnz	memset		;; repeat if A != 0
 	ret
 
 	mvi	c,0
@@ -2672,7 +2686,7 @@ X1159:	mov	m,e
 X117e:	mov	a,h
 	ori	0f0h
 	mov	h,a
-	shld	X204e
+	shld	scratch_start	; update [0x204e]
 	lxi	h,X2113
 	xra	a
 X1189:	mov	m,a
@@ -2727,7 +2741,7 @@ X11ce:	ora	a
 	mov	l,m
 	ori	0f0h
 	mov	h,a
-	shld	X204e
+	shld	scratch_start	; update [0x204e]
 	call	X1290
 	pop	h
 	mov	b,d
@@ -2747,7 +2761,7 @@ X11e8:	call	X127f
 	ori	0f0h
 	mov	h,a
 	mov	l,e
-	shld	X204e
+	shld	scratch_start	; update [0x204e]
 	pop	h
 	mov	a,h
 	ori	9fh
@@ -2810,12 +2824,12 @@ X1252:	call	X129d
 	mov	c,m
 	call	X13de
 	xchg
-	lhld	X204e
+	lhld	scratch_start	; load [0x204e]
 	xchg
 	mov	m,e
 	dcx	h
 	mov	m,d
-X1271:	lhld	X204e
+X1271:	lhld	scratch_start	; load [0x204e]
 	shld	X2056
 	call	X1299
 	mov	m,b
@@ -3175,25 +3189,29 @@ X14a2:	lxi	h,X21a5		;;
 	lda	X2077		;; load what's at 0x2077
 	ora	a		;; return if it's not zero
 	rnz			;;
-	lda	X2065		;; A =  0x2065
+	lda	X2065		;; A = [0x2065]
 	lxi	h,X2051		;;
 	ora	m		;; return if [0x2065] | [0x2051] != 0
 	rnz
-	lhld	X212d
+
+	lhld	cursor_countdn	; HL = cursor countdown from [0x212d]
 	dcx	h
 	mov	a,h
 	ora	l
 	jz	X14d4
-	shld	X212d
+	shld	cursor_countdn	; update cursor countdown with decremented value
 	ret
-
-X14d4:	lda	X21ba
-	xri	0ffh
-	sta	X21ba
-	lxi	h,X0212
-	jnz	X14e5
-	lxi	h,X0109
-X14e5:	shld	X212d
+;
+; Cursor countdown reached zero, time to invert the cursor;
+; note that the cursor is on (visible) twice as long as it's off
+;
+X14d4:	lda	cursor_visible	; A = 0xff (visible) or 0x00 (invisible)
+	xri	0ffh		; invert
+	sta	cursor_visible	;
+	lxi	h,212h		; new initial count; start with 0x0212
+	jnz	X14e5		; and stick with that if cursor still visible
+	lxi	h,109h		; otherwise, use half that value (0x0109) if invisible
+X14e5:	shld	cursor_countdn	; store new cursor countdown
 	lhld	X20f6
 	mov	b,m
 	lda	X2159
@@ -3394,10 +3412,10 @@ X162b:	inx	h
 	inx	h
 	jmp	X13db
 
-X1636:	lxi	h,X000d
-	shld	X212d
+X1636:	lxi	h,13
+	shld	cursor_countdn		; reset cursor countdown to 13 (0x000d)
 	xra	a
-	sta	X21ba
+	sta	cursor_visible		; reset cursor visibility
 	lhld	X20f6
 	lda	X20f4
 	mov	b,a
@@ -3679,7 +3697,7 @@ X1837:	cmp	d
 X1844:	mov	m,a
 	jmp	X1636
 
-X1848:	lxi	h,X0000
+X1848:	lxi	h,0
 	shld	X2130
 	mvi	a,0ffh
 	sta	X210e
@@ -3786,7 +3804,7 @@ X1900:	in	42h
 	out	62h
 	lxi	d,X21d3		;; DE = 0x21d3
 	mvi	b,0eh		;; B = 14
-	lxi	h,X0000		;; HL = 0
+	lxi	h,0		;; HL = 0
 X1916:	dad	h		;;
 	ldax	d		;; load next char
 	ani	20h		;; and with NVR data bit
@@ -3967,7 +3985,7 @@ X1a2b:	mvi	c,80h
 	shld	X2111
 	lxi	h,X19ee
 	shld	X2140
-	lxi	h,X0000
+	lxi	h,0
 	shld	X2143
 	shld	X2172
 X1a45:	lhld	X2004
@@ -4170,7 +4188,7 @@ X1bb0:	call	X0394
 	shld	X2140
 	ret
 
-X1bba:	lhld	X204e
+X1bba:	lhld	scratch_start	; load [0x204e]
 	jmp	X1bc3
 
 X1bc0:	lxi	h,X21cc
@@ -4374,7 +4392,7 @@ X1d17:	mvi	m,0
 	lda	X21ac
 	call	X1d61
 	call	X1c9f
-	lxi	d,X0008
+	lxi	d,8
 	mvi	c,4
 	pop	psw
 	jz	X1d3d
@@ -4600,8 +4618,8 @@ X1e9f:	call	X1edd
 	inx	h
 	shld	X21b4
 	mov	b,a
-	lxi	d,X0014
-	call	X1083
+	lxi	d,20		; DE = 20(0x0014)
+	call	memset		; call memset(0x1083)
 	lxi	h,X1eb8
 	shld	X2140
 	ret
@@ -4635,7 +4653,7 @@ X1ee5:	call	X05e3
 	ret
 
 X1eea:	push	h
-	lxi	h,X204e
+	lxi	h,scratch_start	; HL -> 0x204e
 	mov	c,a
 	lda	X21a2
 	ora	a
@@ -4804,7 +4822,6 @@ X1ccd	equ	1ccdh
 X2001	equ	2001h
 X2002	equ	2002h
 X2004	equ	2004h
-X204e	equ	204eh
 X2050	equ	2050h
 X2051	equ	2051h
 X2052	equ	2052h
@@ -4857,7 +4874,6 @@ X2111	equ	2111h
 X2113	equ	2113h
 X212b	equ	212bh
 X212c	equ	212ch
-X212d	equ	212dh
 X212f	equ	212fh
 X2130	equ	2130h
 X2131	equ	2131h
@@ -4912,7 +4928,6 @@ X21af	equ	21afh
 X21b4	equ	21b4h
 X21b8	equ	21b8h
 X21b9	equ	21b9h
-X21ba	equ	21bah
 X21bb	equ	21bbh
 X21bc	equ	21bch
 X21bd	equ	21bdh
diff --git a/devices/pc8080/rom/vt100/VT100.lst b/devices/pc8080/rom/vt100/VT100.lst
index d7c554b7d..3d77754f9 100644
--- a/devices/pc8080/rom/vt100/VT100.lst
+++ b/devices/pc8080/rom/vt100/VT100.lst
@@ -7,108 +7,123 @@
 			;
 			;   All other comments/annotations by Jeff Parsons (@jeffpar) <Jeff@pcjs.org>
 			;
+			
+			;
+			;   Data area definitions
+			;
+            20 4E	stack_top	equ	204eh
+            20 4E	scratch_start	equ	204eh
+            21 2D	cursor_countdn	equ	212dh
+            21 BA	cursor_visible	equ	21bah
+			
+			;
+			; Reset vector
+			;
             00 00		org	0
-			
-    12 0000 F3		X0000:	di
-    13 0001 31 4E 20		lxi	sp,X204e
-    14 0004 C3 3B 00		jmp	X003b
-			
+    23 0000 F3			di
+    24 0001 31 4E 20		lxi	sp,stack_top		; SP = 0x204e
+    25 0004 C3 3B 00		jmp	reset
+			;
+			; Interrupt vector 0x1 for Keyboard
+			;
             00 08		org	8
+    30 0008 CD FD 00		call	X00fd
+    31 000B FB			ei
+    32 000C C9			ret
 			;
-			; Interrupt vector 0x1 for keyboard
+			; Interrupt vector 0x2 for PUSART
 			;
-    20 0008 CD FD 00	X0008:	call	X00fd
-    21 000B FB			ei
-    22 000C C9			ret
-			
-    24 000D 00		X000d:	nop
-			
             00 10		org	10h
-			
-    28 0010 CD CC 03		call	X03cc
-    29 0013 FB			ei
-    30 0014 C9		X0014:	ret
-			
-    32 0015 00			nop
-			
+    37 0010 CD CC 03		call	X03cc
+    38 0013 FB			ei
+    39 0014 C9			ret
+			;
+			; Interrupt vector 0x3 for Keyboard and PUSART
+			;
             00 18		org	18h
-			
-    36 0018 CD CC 03		call	X03cc
-    37 001B CD FD 00		call	X00fd
-    38 001E FB			ei
-    39 001F C9			ret
-			
-    41 0020 CD CF 04		call	X04cf
-    42 0023 C9			ret
-			
-    44 0024 00			nop
-			
+    44 0018 CD CC 03		call	X03cc
+    45 001B CD FD 00		call	X00fd
+    46 001E FB			ei
+    47 001F C9			ret
+			;
+			; Interrupt vector 0x4 for Video (vertical retrace)
+			;
+            00 20		org	20h
+    52 0020 CD CF 04		call	X04cf
+    53 0023 C9			ret
+			;
+			; Interrupt vector 0x5 for Keyboard and Video
+			;
             00 28		org	28h
-			
-    48 0028 CD CF 04		call	X04cf
-    49 002B C9			ret
-			
-    51 002C 00			nop
-			
+    58 0028 CD CF 04		call	X04cf
+    59 002B C9			ret
+			;
+			; Interrupt vector 0x6 for PUSART and Video
+			;
             00 30		org	30h
+    64 0030 CD CC 03	X0030:	call	X03cc
+    65 0033 CD CF 04		call	X04cf
+    66 0036 FB			ei
+    67 0037 C9			ret
+			;
+			; Interrupt vector 0x7 for Keyboard and PUSART and Video
+			;
+            00 38		org	38h
+    72 0038 C3 30 00		jmp	X0030
 			
-    55 0030 CD CC 03	X0030:	call	X03cc
-    56 0033 CD CF 04		call	X04cf
-    57 0036 FB			ei
-    58 0037 C9			ret
-			
-    60 0038 C3 30 00		jmp	X0030
-			
-    62 003B 1E 01	X003b:	mvi	e,1
-    63 003D F3		X003d:	di
-    64 003E 3E 0F		mvi	a,0fh
-    65 0040 D3 62		out	62h		;; 0x0f to NVR latch
-    66 0042 2F			cma			;; invert A (0xf0)
-    67 0043 D3 42		out	42h		;; 0xf0 to brightness
+			;
+			; Beginning of power-up (reset) code at 0x003b
+			;
+    77 003B 1E 01	reset:	mvi	e,1
+    78 003D F3		X003d:	di
+    79 003E 3E 0F		mvi	a,0fh
+    80 0040 D3 62		out	62h		;; 0x0f to NVR latch
+    81 0042 2F			cma			;; invert A (0xf0)
+    82 0043 D3 42		out	42h		;; 0xf0 to brightness
 			;;
 			;;  Run checksum on each 2K ROM, indicating with
 			;;  the keyboard LEDs which is being scanned.
 			;;  The # of the chip being scanned is stored in B.
 			;;
-    73 0045 AF			xra	a		;; zero A
-    74 0046 57			mov	d,a		;; zero D, L, H
-    75 0047 6F			mov	l,a
-    76 0048 67			mov	h,a
-    77 0049 3C		X0049:	inr	a		;; next 2K ROM
-    78 004A 47			mov	b,a		;; store the current ROM # in B
-    79 004B D3 82		out	82h		;; show current ROM on LEDs
-    80 004D 0E 08		mvi	c,8		;; Checksum over 8 256B blocks
-    81 004F 07		X004f:	rlc			;;    Rotate A left
-    82 0050 AE			xra	m		;;    A <- A ^ memory
-    83 0051 2C			inr	l		;;    next memory address
-    84 0052 C2 4F 00		jnz	X004f		;;    ... repeat until end of block
-    85 0055 24			inr	h		;; next block
-    86 0056 0D			dcr	c		;; decrement block count
-    87 0057 C2 4F 00		jnz	X004f		;; ... repeat until end of chip
-    88 005A B7			ora	a		;; Check the value of the accumulator
-    89 005B C2 5B 00	X005b:	jnz	X005b		;; If it's not zero, hang forever
-    90 005E 78			mov	a,b		;; Put the ROM # back in the accumulator
-    91 005F FE 04		cpi	4		;; If it's not 4...
-    92 0061 C2 49 00		jnz	X0049		;; repeat for the next ROM
+    88 0045 AF			xra	a		;; zero A
+    89 0046 57			mov	d,a		;; zero D, L, H
+    90 0047 6F			mov	l,a
+    91 0048 67			mov	h,a
+    92 0049 3C		X0049:	inr	a		;; next 2K ROM
+    93 004A 47			mov	b,a		;; store the current ROM # in B
+    94 004B D3 82		out	82h		;; show current ROM on LEDs
+    95 004D 0E 08		mvi	c,8		;; Checksum over 8 256B blocks
+    96 004F 07		X004f:	rlc			;;    Rotate A left
+    97 0050 AE			xra	m		;;    A <- A ^ memory
+    98 0051 2C			inr	l		;;    next memory address
+    99 0052 C2 4F 00		jnz	X004f		;;    ... repeat until end of block
+   100 0055 24			inr	h		;; next block
+   101 0056 0D			dcr	c		;; decrement block count
+   102 0057 C2 4F 00		jnz	X004f		;; ... repeat until end of chip
+   103 005A B7			ora	a		;; Check the value of the accumulator
+   104 005B C2 5B 00	X005b:	jnz	X005b		;; If it's not zero, hang forever
+   105 005E 78			mov	a,b		;; Put the ROM # back in the accumulator
+   106 005F FE 04		cpi	4		;; If it's not 4...
+   107 0061 C2 49 00		jnz	X0049		;; repeat for the next ROM
 			
-    94 0064 3C			inr	a
-    95 0065 D3 82		out	82h		;; write 5 to LEDs (turns on L2 and L4)
+   109 0064 3C			inr	a
+   110 0065 D3 82		out	82h		;; write 5 to LEDs (turns on L2 and L4)
 			
-    97 0067 0E AA		mvi	c,0aah		;; Test pattern: 0xaa
-    98 0069 06 2C		mvi	b,2ch		;; 0x2c is the top of RAM on the basic board
-    99 006B DB 42		in	42h		;;
-   100 006D E6 02		ani	2		;; flags buffer &= 0x02 : is AVO installed?
-   101 006F C2 74 00		jnz	X0074		;; if bit 2 is not set, AVO is installed
-   102 0072 06 40		mvi	b,40h		;; 0x40 is the top of RAM on the AVO
-   103 0074 60		X0074:	mov	h,b		;; load HL with top of RAM
-   104 0075 2B			dcx	h		;; dec HL
-   105 0076 36 00	X0076:	mvi	m,0		;; M <- 0
-   106 0078 2B			dcx	h		;; dec HL
-   107 0079 7C			mov	a,h		;; a <- h
-   108 007A FE 1F		cpi	1fh		;; compare to 1f (top of ROM)
-   109 007C C2 76 00		jnz	X0076		;; continue to zero if not at ROM
+   112 0067 0E AA		mvi	c,0aah		;; Test pattern: 0xaa
+   113 0069 06 2C		mvi	b,2ch		;; 0x2c is the top of RAM on the basic board
+   114 006B DB 42		in	42h		;;
+   115 006D E6 02		ani	2		;; flags buffer &= 0x02 : is AVO installed?
+   116 006F C2 74 00		jnz	X0074		;; if bit 2 is not set, AVO is installed
+   117 0072 06 40		mvi	b,40h		;; 0x40 is the top of RAM on the AVO
+   118 0074 60		X0074:	mov	h,b		;; load HL with top of RAM
+   119 0075 2B			dcx	h		;; dec HL
+   120 0076 36 00	X0076:	mvi	m,0		;; M <- 0
+   121 0078 2B			dcx	h		;; dec HL
+   122 0079 7C			mov	a,h		;; a <- h
+   123 007A FE 1F		cpi	1fh		;; compare to 1f (top of ROM)
+   124 007C C2 76 00		jnz	X0076		;; continue to zero if not at ROM
 			
-   111 007F 23			inx	h
+   126 007F 23			inx	h
 			;;
 			;;  Zero all RAM. C gets the high byte of the address of the top of
 			;;  RAM, HL is loaded with it, and it zeros memory all the way down,
@@ -116,2289 +131,2326 @@
 			;;
 			;;  From start of RAM, test that it's all zero
 			;;
-   119 0080 7E		X0080:	mov	a,m		;; read a byte of memory
-   120 0081 B7			ora	a
-   121 0082 CA 90 00		jz	X0090		;; if it's zero, skip ahead
-   122 0085 E6 0F		ani	0fh
-   123 0087 7C			mov	a,h
-   124 0088 C2 A1 00		jnz	X00a1		;; err
-   125 008B FE 30		cpi	30h
-   126 008D DA A1 00		jc	X00a1		;; err
-   127 0090 71		X0090:	mov	m,c		;; run test pattern through ram
-   128 0091 7E			mov	a,m
-   129 0092 A9			xra	c
-   130 0093 CA A8 00		jz	X00a8		;; jump to 00a8 if ok
-   131 0096 E6 0F		ani	0fh
-   132 0098 7C			mov	a,h
-   133 0099 C2 A1 00		jnz	X00a1		;; err
-   134 009C FE 30		cpi	30h
-   135 009E D2 A8 00		jnc	X00a8		;; ok
-   136 00A1 16 01	X00a1:	mvi	d,1
-   137 00A3 FE 2C		cpi	2ch
-   138 00A5 DA A5 00	X00a5:	jc	X00a5		;; Hang if non-AVO memory
-   139 00A8 AF		X00a8:	xra	a
-   140 00A9 23			inx	h
-   141 00AA B5			ora	l
-   142 00AB C2 80 00		jnz	X0080
-   143 00AE B4			ora	h
-   144 00AF B8			cmp	b
-   145 00B0 C2 80 00		jnz	X0080
-   146 00B3 79			mov	a,c		;; Repeat mem test with pattern 0x55
-   147 00B4 07			rlc
-   148 00B5 4F			mov	c,a
-   149 00B6 DA 74 00		jc	X0074
+   134 0080 7E		X0080:	mov	a,m		;; read a byte of memory
+   135 0081 B7			ora	a
+   136 0082 CA 90 00		jz	X0090		;; if it's zero, skip ahead
+   137 0085 E6 0F		ani	0fh
+   138 0087 7C			mov	a,h
+   139 0088 C2 A1 00		jnz	X00a1		;; err
+   140 008B FE 30		cpi	30h
+   141 008D DA A1 00		jc	X00a1		;; err
+   142 0090 71		X0090:	mov	m,c		;; run test pattern through ram
+   143 0091 7E			mov	a,m
+   144 0092 A9			xra	c
+   145 0093 CA A8 00		jz	X00a8		;; jump to 00a8 if ok
+   146 0096 E6 0F		ani	0fh
+   147 0098 7C			mov	a,h
+   148 0099 C2 A1 00		jnz	X00a1		;; err
+   149 009C FE 30		cpi	30h
+   150 009E D2 A8 00		jnc	X00a8		;; ok
+   151 00A1 16 01	X00a1:	mvi	d,1
+   152 00A3 FE 2C		cpi	2ch
+   153 00A5 DA A5 00	X00a5:	jc	X00a5		;; Hang if non-AVO memory
+   154 00A8 AF		X00a8:	xra	a
+   155 00A9 23			inx	h
+   156 00AA B5			ora	l
+   157 00AB C2 80 00		jnz	X0080
+   158 00AE B4			ora	h
+   159 00AF B8			cmp	b
+   160 00B0 C2 80 00		jnz	X0080
+   161 00B3 79			mov	a,c		;; Repeat mem test with pattern 0x55
+   162 00B4 07			rlc
+   163 00B5 4F			mov	c,a
+   164 00B6 DA 74 00		jc	X0074
 			;;
 			;;  Memory test is done
 			;;
-   153 00B9 D5			push	d
-   154 00BA CD A4 02		call	X02a4		;; zero scratch and screen mem
-   155 00BD CD EB 02		call	X02eb		;; Set a number of scratch values to fixed values
-   156 00C0 CD 5B 17		call	X175b		;; .... more memory initialization
-   157 00C3 D1			pop	d
-   158 00C4 CA CB 00	X00c4:	jz	X00cb
-   159 00C7 7A			mov	a,d
-   160 00C8 F6 02		ori	2
-   161 00CA 57			mov	d,a
-   162 00CB 3E 2F	X00cb:	mvi	a,2fh
-   163 00CD 32 C9 21		sta	X21c9
-   164 00D0 D3 62		out	62h
-   165 00D2 01 FF 0F	X00d2:	lxi	b,X0fff
-   166 00D5 FB			ei
-   167 00D6 3E 08	X00d6:	mvi	a,8
-   168 00D8 A3			ana	e
-   169 00D9 3E 7F		mvi	a,7fh
-   170 00DB C2 E0 00		jnz	X00e0
-   171 00DE 3E FF		mvi	a,0ffh
-   172 00E0 D3 82	X00e0:	out	82h
-   173 00E2 0B			dcx	b
-   174 00E3 78			mov	a,b
-   175 00E4 B1			ora	c
-   176 00E5 C2 D6 00		jnz	X00d6
-   177 00E8 D3 82		out	82h
-   178 00EA 3A 68 20		lda	X2068
-   179 00ED B7			ora	a
-   180 00EE FA F5 00		jm	X00f5
-   181 00F1 7A			mov	a,d
-   182 00F2 F6 04		ori	4
-   183 00F4 57			mov	d,a
-   184 00F5 D5		X00f5:	push	d
-   185 00F6 CD A2 03		call	X03a2
-   186 00F9 D1			pop	d
-   187 00FA C3 75 08		jmp	X0875
-			;;
-			;;  Keyboard interrupt handler
-			;;
-   191 00FD F5		X00fd:	push	psw
-   192 00FE DB 82		in	82h		;; Read from keyboard port
-   193 0100 E5			push	h
-   194 0101 C5			push	b
-   195 0102 47			mov	b,a		;; copy b <- a
-   196 0103 D6 7C		sui	7ch		;; subtract 0x7c from a
-   197 0105 FA 1A 01		jm	X011a		;; jump to 011a if a is a normal key
-   198 0108 67			mov	h,a		;; otherwise h <- a
-   199 0109 24		X0109:	inr	h		;; h++
-   200 010A 3E 10		mvi	a,10h		;; a <- 0x10
-   201 010C 0F			rrc
-   202 010D 07		X010d:	rlc
-   203 010E 25			dcr	h
-   204 010F C2 0D 01		jnz	X010d
-   205 0112 21 68 20		lxi	h,X2068		;; load keys flag addresss
-   206 0115 B6			ora	m		;; or in control bit
-   207 0116 77			mov	m,a		;; store again
-   208 0117 C3 2D 01		jmp	X012d		;; jump to end to interrupt
+   168 00B9 D5			push	d
+   169 00BA CD A4 02		call	X02a4		;; zero scratch and screen mem
+   170 00BD CD EB 02		call	X02eb		;; Set a number of scratch values to fixed values
+   171 00C0 CD 5B 17		call	X175b		;; .... more memory initialization
+   172 00C3 D1			pop	d
+   173 00C4 CA CB 00	X00c4:	jz	X00cb
+   174 00C7 7A			mov	a,d
+   175 00C8 F6 02		ori	2
+   176 00CA 57			mov	d,a
+   177 00CB 3E 2F	X00cb:	mvi	a,2fh
+   178 00CD 32 C9 21		sta	X21c9
+   179 00D0 D3 62		out	62h
+			;
+			; Prepare to enter the "beep" loop
+			;
+   183 00D2 01 FF 0F	X00d2:	lxi	b,X0fff
+   184 00D5 FB			ei
+   185 00D6 3E 08	X00d6:	mvi	a,8
+   186 00D8 A3			ana	e
+   187 00D9 3E 7F		mvi	a,7fh
+   188 00DB C2 E0 00		jnz	X00e0
+   189 00DE 3E FF		mvi	a,0ffh
+   190 00E0 D3 82	X00e0:	out	82h
+   191 00E2 0B			dcx	b
+   192 00E3 78			mov	a,b
+   193 00E4 B1			ora	c
+   194 00E5 C2 D6 00		jnz	X00d6
+			;
+			; Done "beeping" now
+			;
+   198 00E8 D3 82	X00e8:	out	82h		; A = 0, so all LEDs off now
+   199 00EA 3A 68 20		lda	X2068
+   200 00ED B7			ora	a
+   201 00EE FA F5 00		jm	X00f5
+   202 00F1 7A			mov	a,d
+   203 00F2 F6 04		ori	4
+   204 00F4 57			mov	d,a
+   205 00F5 D5		X00f5:	push	d
 			
-   210 011A 21 68 20	X011a:	lxi	h,X2068		;; load keys flag address
-   211 011D 3E 07		mvi	a,7
-   212 011F A6			ana	m		;; load key counter
-   213 0120 FE 04		cpi	4		;; if overflow.. (>3 keys)
-   214 0122 F2 2D 01		jp	X012d		;; discard keypress and end interrupt
-   215 0125 34			inr	m		;; otherwise increment key counter
-   216 0126 21 6A 20		lxi	h,X206a		;; load key address buffer?
-   217 0129 CD DE 13		call	X13de		;; add key counter to address buffer
-   218 012C 70			mov	m,b		;; save key to address buffer
-   219 012D C1		X012d:	pop	b
-   220 012E E1			pop	h
-   221 012F F1			pop	psw
-   222 0130 C9			ret
+			;
+			; The next call issues the following:
+			;
+			;   03A2 CD8103     CALL    0381                        ;stack=204A
+			;   0B67 CDAD10     CALL    10AD                        ;stack=2048
+			;   chipset.outPort(0x00A2,DC012,0x00) at 10BD
+			;   chipset.outPort(0x00A2,DC012,0x04) at 10C1
+			;
+			; and then:
+			;
+			;   03A2 CD8103     CALL    0381                        ;stack=204A
+			;   0B67 CDAD10     CALL    10AD                        ;stack=2048
+			;   10C9 CDAA0F     CALL    0FAA                        ;stack=2046
+			;   0FB6 CC8814     CALLZ   1488                        ;stack=2040
+			;   1488 CD9314     CALL    1493                        ;stack=203E
+			;   chipset.inPort(0x0042,FLAGS.BUFFER): 0x60 at 1493
+			;
+			; Note that once we're inside 0FAA, that appears to be where we stay.
+			;
+   226 00F6 CD A2 03		call	X03a2
+			
+   228 00F9 D1			pop	d
+   229 00FA C3 75 08		jmp	X0875
+			;
+			;   Keyboard interrupt handler
+			;
+			;   The "Keys Flag Byte/Buffer" at 0x2068 contains the following bits:
+			;
+			;	0-1	Key counter
+			;	  2	Key counter overflow bit
+			;	  3	Setup
+			;	  4	Control
+			;	  5	Shift
+			;	  6	Caps Lock
+			;	  7	Last Key
+			;
+   243 00FD F5		X00fd:	push	psw
+   244 00FE DB 82		in	82h		;; Read from keyboard port
+   245 0100 E5			push	h
+   246 0101 C5			push	b
+   247 0102 47			mov	b,a		;; copy b <- a
+   248 0103 D6 7C		sui	7ch		;; subtract 0x7c from a
+   249 0105 FA 1A 01		jm	X011a		;; jump to 011a if a is a normal key
+   250 0108 67			mov	h,a		;; otherwise h <- a
+   251 0109 24			inr	h		;; h++
+   252 010A 3E 10		mvi	a,10h		;; a <- 0x10
+   253 010C 0F			rrc
+   254 010D 07		X010d:	rlc
+   255 010E 25			dcr	h
+   256 010F C2 0D 01		jnz	X010d
+   257 0112 21 68 20		lxi	h,X2068		;; load keys flag addresss
+   258 0115 B6			ora	m		;; or in control bit
+   259 0116 77			mov	m,a		;; store again
+   260 0117 C3 2D 01		jmp	X012d		;; jump to end to interrupt
+			
+   262 011A 21 68 20	X011a:	lxi	h,X2068		;; load keys flag address
+   263 011D 3E 07		mvi	a,7
+   264 011F A6			ana	m		;; load key counter
+   265 0120 FE 04		cpi	4		;; if overflow.. (>3 keys)
+   266 0122 F2 2D 01		jp	X012d		;; discard keypress and end interrupt
+   267 0125 34			inr	m		;; otherwise increment key counter
+   268 0126 21 6A 20		lxi	h,X206a		;; load key address buffer?
+   269 0129 CD DE 13		call	X13de		;; add key counter to address buffer
+   270 012C 70			mov	m,b		;; save key to address buffer
+   271 012D C1		X012d:	pop	b
+   272 012E E1			pop	h
+   273 012F F1			pop	psw
+   274 0130 C9			ret
 			;;
 			;;  End of keyboard interrupt handler
 			;;
-   226 0131 E6 7F	X0131:	ani	7fh
-   227 0133 4F			mov	c,a
-   228 0134 3A 7B 20		lda	X207b
-   229 0137 B7			ora	a
-   230 0138 C2 FF 01		jnz	X01ff
-   231 013B 79		X013b:	mov	a,c
-   232 013C FE 01		cpi	1
-   233 013E CA C3 01		jz	X01c3
-   234 0141 3A A7 21		lda	X21a7
-   235 0144 E6 20		ani	20h
-   236 0146 C2 75 01		jnz	X0175
-   237 0149 3A 78 21		lda	X2178
-   238 014C B7			ora	a
-   239 014D C2 5F 01		jnz	X015f
-   240 0150 79			mov	a,c
-   241 0151 FE 41		cpi	41h
-   242 0153 FA 5B 01		jm	X015b
-   243 0156 3E 1B		mvi	a,1bh
-   244 0158 CD 18 0F		call	X0f18
-   245 015B 79		X015b:	mov	a,c
-   246 015C C3 0D 08		jmp	X080d
+   278 0131 E6 7F	X0131:	ani	7fh
+   279 0133 4F			mov	c,a
+   280 0134 3A 7B 20		lda	X207b
+   281 0137 B7			ora	a
+   282 0138 C2 FF 01		jnz	X01ff
+   283 013B 79		X013b:	mov	a,c
+   284 013C FE 01		cpi	1
+   285 013E CA C3 01		jz	X01c3
+   286 0141 3A A7 21		lda	X21a7
+   287 0144 E6 20		ani	20h
+   288 0146 C2 75 01		jnz	X0175
+   289 0149 3A 78 21		lda	X2178
+   290 014C B7			ora	a
+   291 014D C2 5F 01		jnz	X015f
+   292 0150 79			mov	a,c
+   293 0151 FE 41		cpi	41h
+   294 0153 FA 5B 01		jm	X015b
+   295 0156 3E 1B		mvi	a,1bh
+   296 0158 CD 18 0F		call	X0f18
+   297 015B 79		X015b:	mov	a,c
+   298 015C C3 0D 08		jmp	X080d
 			
-   248 015F 3E 1B	X015f:	mvi	a,1bh
-   249 0161 CD 18 0F		call	X0f18
-   250 0164 79			mov	a,c
-   251 0165 FE 41		cpi	41h
-   252 0167 F2 5B 01		jp	X015b
-   253 016A 3E 3F		mvi	a,3fh
-   254 016C CD 18 0F	X016c:	call	X0f18
-   255 016F 79			mov	a,c
-   256 0170 C6 40		adi	40h
-   257 0172 C3 0D 08		jmp	X080d
+   300 015F 3E 1B	X015f:	mvi	a,1bh
+   301 0161 CD 18 0F		call	X0f18
+   302 0164 79			mov	a,c
+   303 0165 FE 41		cpi	41h
+   304 0167 F2 5B 01		jp	X015b
+   305 016A 3E 3F		mvi	a,3fh
+   306 016C CD 18 0F	X016c:	call	X0f18
+   307 016F 79			mov	a,c
+   308 0170 C6 40		adi	40h
+   309 0172 C3 0D 08		jmp	X080d
 			
-   259 0175 3A 78 21	X0175:	lda	X2178
-   260 0178 B7			ora	a
-   261 0179 C2 9E 01		jnz	X019e
-   262 017C 79			mov	a,c
-   263 017D FE 41		cpi	41h
-   264 017F FA 5B 01		jm	X015b
-   265 0182 FE 50		cpi	50h
-   266 0184 FA 9E 01		jm	X019e
-   267 0187 3E 1B	X0187:	mvi	a,1bh
-   268 0189 CD 18 0F		call	X0f18
-   269 018C 3E 4F		mvi	a,4fh
-   270 018E CD 18 0F	X018e:	call	X0f18
-   271 0191 C3 5B 01		jmp	X015b
+   311 0175 3A 78 21	X0175:	lda	X2178
+   312 0178 B7			ora	a
+   313 0179 C2 9E 01		jnz	X019e
+   314 017C 79			mov	a,c
+   315 017D FE 41		cpi	41h
+   316 017F FA 5B 01		jm	X015b
+   317 0182 FE 50		cpi	50h
+   318 0184 FA 9E 01		jm	X019e
+   319 0187 3E 1B	X0187:	mvi	a,1bh
+   320 0189 CD 18 0F		call	X0f18
+   321 018C 3E 4F		mvi	a,4fh
+   322 018E CD 18 0F	X018e:	call	X0f18
+   323 0191 C3 5B 01		jmp	X015b
 			
-   273 0194 3E 1B	X0194:	mvi	a,1bh
-   274 0196 CD 18 0F		call	X0f18
-   275 0199 3E 5B		mvi	a,5bh
-   276 019B C3 8E 01		jmp	X018e
+   325 0194 3E 1B	X0194:	mvi	a,1bh
+   326 0196 CD 18 0F		call	X0f18
+   327 0199 3E 5B		mvi	a,5bh
+   328 019B C3 8E 01		jmp	X018e
 			
-   278 019E 3A BC 21	X019e:	lda	X21bc
-   279 01A1 B7			ora	a
-   280 01A2 CA B5 01		jz	X01b5
-   281 01A5 79			mov	a,c
-   282 01A6 FE 41		cpi	41h
-   283 01A8 F2 87 01		jp	X0187
-   284 01AB 3E 1B	X01ab:	mvi	a,1bh
-   285 01AD CD 18 0F		call	X0f18
-   286 01B0 3E 4F		mvi	a,4fh
-   287 01B2 C3 6C 01		jmp	X016c
+   330 019E 3A BC 21	X019e:	lda	X21bc
+   331 01A1 B7			ora	a
+   332 01A2 CA B5 01		jz	X01b5
+   333 01A5 79			mov	a,c
+   334 01A6 FE 41		cpi	41h
+   335 01A8 F2 87 01		jp	X0187
+   336 01AB 3E 1B	X01ab:	mvi	a,1bh
+   337 01AD CD 18 0F		call	X0f18
+   338 01B0 3E 4F		mvi	a,4fh
+   339 01B2 C3 6C 01		jmp	X016c
 			
-   289 01B5 79		X01b5:	mov	a,c
-   290 01B6 FE 41		cpi	41h
-   291 01B8 FA AB 01		jm	X01ab
-   292 01BB FE 50		cpi	50h
-   293 01BD FA 94 01		jm	X0194
-   294 01C0 C3 87 01		jmp	X0187
+   341 01B5 79		X01b5:	mov	a,c
+   342 01B6 FE 41		cpi	41h
+   343 01B8 FA AB 01		jm	X01ab
+   344 01BB FE 50		cpi	50h
+   345 01BD FA 94 01		jm	X0194
+   346 01C0 C3 87 01		jmp	X0187
 			
-   296 01C3 21 15 08	X01c3:	lxi	h,X0815
-   297 01C6 E5			push	h
-   298 01C7 3A A5 21		lda	X21a5
-   299 01CA B7			ora	a
-   300 01CB C0			rnz
-   301 01CC CD 53 08		call	X0853
-   302 01CF 01 0E 02		lxi	b,X020e
-   303 01D2 21 68 20		lxi	h,X2068
-   304 01D5 7E			mov	a,m
-   305 01D6 E6 10		ani	10h
-   306 01D8 C2 00 09		jnz	X0900
-   307 01DB 7E			mov	a,m
-   308 01DC E6 20		ani	20h
-   309 01DE CA E4 01		jz	X01e4
-   310 01E1 01 D2 00		lxi	b,X00d2
-   311 01E4 3E 25	X01e4:	mvi	a,25h
-   312 01E6 F6 08		ori	8
-   313 01E8 B0			ora	b
-   314 01E9 D3 01		out	1
-   315 01EB 3A 7F 20		lda	X207f
-   316 01EE 81			add	c
-   317 01EF 4F			mov	c,a
-   318 01F0 C5		X01f0:	push	b
-   319 01F1 CD 93 14		call	X1493
-   320 01F4 C1			pop	b
-   321 01F5 3A 7F 20		lda	X207f
-   322 01F8 B9			cmp	c
-   323 01F9 C2 F0 01		jnz	X01f0
-   324 01FC C3 94 03		jmp	X0394
+   348 01C3 21 15 08	X01c3:	lxi	h,X0815
+   349 01C6 E5			push	h
+   350 01C7 3A A5 21		lda	X21a5
+   351 01CA B7			ora	a
+   352 01CB C0			rnz
+   353 01CC CD 53 08		call	X0853
+   354 01CF 01 0E 02		lxi	b,X020e
+   355 01D2 21 68 20		lxi	h,X2068
+   356 01D5 7E			mov	a,m
+   357 01D6 E6 10		ani	10h
+   358 01D8 C2 00 09		jnz	X0900
+   359 01DB 7E			mov	a,m
+   360 01DC E6 20		ani	20h
+   361 01DE CA E4 01		jz	X01e4
+   362 01E1 01 D2 00		lxi	b,X00d2
+   363 01E4 3E 25	X01e4:	mvi	a,25h
+   364 01E6 F6 08		ori	8
+   365 01E8 B0			ora	b
+   366 01E9 D3 01		out	1
+   367 01EB 3A 7F 20		lda	X207f
+   368 01EE 81			add	c
+   369 01EF 4F			mov	c,a
+   370 01F0 C5		X01f0:	push	b
+   371 01F1 CD 93 14		call	X1493
+   372 01F4 C1			pop	b
+   373 01F5 3A 7F 20		lda	X207f
+   374 01F8 B9			cmp	c
+   375 01F9 C2 F0 01		jnz	X01f0
+   376 01FC C3 94 03		jmp	X0394
 			
-   326 01FF 21 12 08	X01ff:	lxi	h,X0812
-   327 0202 E5			push	h
-   328 0203 AF			xra	a
-   329 0204 32 30 21		sta	X2130
-   330 0207 32 B8 21		sta	X21b8
-   331 020A 21 A3 21		lxi	h,X21a3
-   332 020D 79			mov	a,c
-   333 020E D6 41	X020e:	sui	41h
-   334 0210 47			mov	b,a
-   335 0211 7E		X0211:	mov	a,m
-   336 0212 CA 22 02	X0212:	jz	X0222
-   337 0215 05			dcr	b
-   338 0216 CA 26 02		jz	X0226
-   339 0219 05			dcr	b
-   340 021A CA 15 18		jz	X1815
-   341 021D 05			dcr	b
-   342 021E CA 1E 18		jz	X181e
-   343 0221 C9			ret
+   378 01FF 21 12 08	X01ff:	lxi	h,X0812
+   379 0202 E5			push	h
+   380 0203 AF			xra	a
+   381 0204 32 30 21		sta	X2130
+   382 0207 32 B8 21		sta	X21b8
+   383 020A 21 A3 21		lxi	h,X21a3
+   384 020D 79			mov	a,c
+   385 020E D6 41	X020e:	sui	41h
+   386 0210 47			mov	b,a
+   387 0211 7E		X0211:	mov	a,m
+   388 0212 CA 22 02		jz	X0222
+   389 0215 05			dcr	b
+   390 0216 CA 26 02		jz	X0226
+   391 0219 05			dcr	b
+   392 021A CA 15 18		jz	X1815
+   393 021D 05			dcr	b
+   394 021E CA 1E 18		jz	X181e
+   395 0221 C9			ret
 			
-   345 0222 3D		X0222:	dcr	a
-   346 0223 F8			rm
-   347 0224 77			mov	m,a
-   348 0225 C9			ret
+   397 0222 3D		X0222:	dcr	a
+   398 0223 F8			rm
+   399 0224 77			mov	m,a
+   400 0225 C9			ret
 			
-   350 0226 3C		X0226:	inr	a
-   351 0227 FE 20		cpi	20h
-   352 0229 C8			rz
-   353 022A 77			mov	m,a
-   354 022B C9			ret
+   402 0226 3C		X0226:	inr	a
+   403 0227 FE 20		cpi	20h
+   404 0229 C8			rz
+   405 022A 77			mov	m,a
+   406 022B C9			ret
 			
-   356 022C 3A A7 21	X022c:	lda	X21a7
-   357 022F 2F			cma
-   358 0230 E6 10		ani	10h
-   359 0232 21 A5 21		lxi	h,X21a5
-   360 0235 B6			ora	m
-   361 0236 C2 41 08		jnz	X0841
-   362 0239 3A BF 21		lda	X21bf
-   363 023C 01 11 02		lxi	b,X0211
-   364 023F A0			ana	b
-   365 0240 C2 45 02		jnz	X0245
-   366 0243 0E 13		mvi	c,13h
-   367 0245 79		X0245:	mov	a,c
-   368 0246 D6 11		sui	11h
-   369 0248 32 C4 21		sta	X21c4
-   370 024B CD 7E 0F		call	X0f7e
-   371 024E C3 12 08		jmp	X0812
+   408 022C 3A A7 21	X022c:	lda	X21a7
+   409 022F 2F			cma
+   410 0230 E6 10		ani	10h
+   411 0232 21 A5 21		lxi	h,X21a5
+   412 0235 B6			ora	m
+   413 0236 C2 41 08		jnz	X0841
+   414 0239 3A BF 21		lda	X21bf
+   415 023C 01 11 02		lxi	b,X0211
+   416 023F A0			ana	b
+   417 0240 C2 45 02		jnz	X0245
+   418 0243 0E 13		mvi	c,13h
+   419 0245 79		X0245:	mov	a,c
+   420 0246 D6 11		sui	11h
+   421 0248 32 C4 21		sta	X21c4
+   422 024B CD 7E 0F		call	X0f7e
+   423 024E C3 12 08		jmp	X0812
 			
-   373 0251 F3		X0251:	di
-   374 0252 31 4E 20		lxi	sp,X204e
-   375 0255 21 00 20		lxi	h,2000h
-   376 0258 E5			push	h
-   377 0259 7E			mov	a,m
-   378 025A 1F			rar
-   379 025B DA 65 02		jc	X0265
-   380 025E DB 42		in	42h
-   381 0260 E6 02		ani	2
-   382 0262 CA 69 02		jz	X0269
-   383 0265 3C		X0265:	inr	a
-   384 0266 32 C8 21		sta	X21c8
-   385 0269 CD A2 03	X0269:	call	X03a2
-   386 026C 3A 50 20		lda	X2050
-   387 026F 3D			dcr	a
-   388 0270 32 53 21		sta	X2153
-   389 0273 E1			pop	h
-   390 0274 7E			mov	a,m
-   391 0275 36 7F		mvi	m,7fh
-   392 0277 B7			ora	a
-   393 0278 CA 98 02		jz	X0298
-   394 027B F2 85 02		jp	X0285
-   395 027E 21 CB 21		lxi	h,X21cb
-   396 0281 36 0A		mvi	m,0ah
-   397 0283 E6 7F		ani	7fh
-   398 0285 32 BD 21	X0285:	sta	X21bd
-   399 0288 C6 30		adi	30h
-   400 028A 2A F6 20		lhld	X20f6
-   401 028D 77			mov	m,a
-   402 028E FE 34		cpi	34h
-   403 0290 CA 98 02		jz	X0298
-   404 0293 3E 20		mvi	a,20h
-   405 0295 32 A5 21		sta	X21a5
-   406 0298 CD F2 0B	X0298:	call	X0bf2
-   407 029B 01 11 00		lxi	b,X0011
-   408 029E CD 7E 0F		call	X0f7e
-   409 02A1 C3 AE 03		jmp	X03ae
+   425 0251 F3		X0251:	di
+   426 0252 31 4E 20		lxi	sp,stack_top		; SP = 0x204e
+   427 0255 21 00 20		lxi	h,2000h
+   428 0258 E5			push	h
+   429 0259 7E			mov	a,m
+   430 025A 1F			rar
+   431 025B DA 65 02		jc	X0265
+   432 025E DB 42		in	42h
+   433 0260 E6 02		ani	2
+   434 0262 CA 69 02		jz	X0269
+   435 0265 3C		X0265:	inr	a
+   436 0266 32 C8 21		sta	X21c8
+   437 0269 CD A2 03	X0269:	call	X03a2
+   438 026C 3A 50 20		lda	X2050
+   439 026F 3D			dcr	a
+   440 0270 32 53 21		sta	X2153
+   441 0273 E1			pop	h
+   442 0274 7E			mov	a,m
+   443 0275 36 7F		mvi	m,7fh
+   444 0277 B7			ora	a
+   445 0278 CA 98 02		jz	X0298
+   446 027B F2 85 02		jp	X0285
+   447 027E 21 CB 21		lxi	h,X21cb
+   448 0281 36 0A		mvi	m,0ah
+   449 0283 E6 7F		ani	7fh
+   450 0285 32 BD 21	X0285:	sta	X21bd
+   451 0288 C6 30		adi	30h
+   452 028A 2A F6 20		lhld	X20f6
+   453 028D 77			mov	m,a
+   454 028E FE 34		cpi	34h
+   455 0290 CA 98 02		jz	X0298
+   456 0293 3E 20		mvi	a,20h
+   457 0295 32 A5 21		sta	X21a5
+   458 0298 CD F2 0B	X0298:	call	X0bf2
+   459 029B 01 11 00		lxi	b,X0011
+   460 029E CD 7E 0F		call	X0f7e
+   461 02A1 C3 AE 03		jmp	X03ae
 			;;
 			;;  Zero all scratch and screen RAM above stack
 			;;
-   413 02A4 21 4E 20	X02a4:	lxi	h,X204e		;; HL <- 0x204e (top of stack)
-   414 02A7 11 B2 0F		lxi	d,X0fb2		;; DE <- 0x0fb2
-   415 02AA 06 00		mvi	b,0		;; B  <- 0
-   416 02AC CD 83 10		call	X1083		;; memset(0x204e,0,0xfb2)
-   417 02AF 2F			cma			;; invert A
-   418 02B0 32 04 21		sta	X2104		;; store A in 0x2104
-   419 02B3 21 04 20		lxi	h,X2004		;; HL <- 0x2004
-   420 02B6 22 52 20		shld	X2052		;; *(0x2052) = 0x2004
-   421 02B9 21 D0 22		lxi	h,X22d0		;; HL <- 0x22d0
-   422 02BC 22 F6 20		shld	X20f6		;; *(20f6) = 0x22d0
-   423 02BF C9			ret
+   465 02A4 21 4E 20	X02a4:	lxi	h,scratch_start	;; HL = 0x204e (just above stack)
+   466 02A7 11 B2 0F		lxi	d,0fb2h		;; DE = 0x0fb2 (every byte from 0x204e up to 0x3000)
+   467 02AA 06 00		mvi	b,0		;; B = 0
+   468 02AC CD 83 10		call	memset		;; memset(0x1083): set 0x0fb2 bytes to 0 starting at 0x204e
+   469 02AF 2F			cma			;; invert A
+   470 02B0 32 04 21		sta	X2104		;; store A in 0x2104
+   471 02B3 21 04 20		lxi	h,X2004		;; HL <- 0x2004
+   472 02B6 22 52 20		shld	X2052		;; *(0x2052) = 0x2004
+   473 02B9 21 D0 22		lxi	h,X22d0		;; HL <- 0x22d0
+   474 02BC 22 F6 20		shld	X20f6		;; *(20f6) = 0x22d0
+   475 02BF C9			ret
 			;;
 			;;  Initialize start of screen RAM and wipe attribute RAM to 0xff
 			;;
-   427 02C0 CD 15 0A	X02c0:	call	X0a15		;; 0x2140 = 0xe605
-   428 02C3 21 00 20		lxi	h,2000h		;; HL = 0x2000
-   429 02C6 11 D9 02		lxi	d,X02d9		;; DE = 0x02d9
-   430 02C9 06 12		mvi	b,12h		;; B = 18
-   431 02CB CD 8B 03		call	memmov		;; copy 18 bytes from 0x02d9 to 0x2000
-   432 02CE 21 00 30		lxi	h,X3000		;; HL = 0x3000
-   433 02D1 11 00 10		lxi	d,X1000		;; DE = 0x1000
-   434 02D4 06 FF		mvi	b,0ffh		;; B = 0xFF
-   435 02D6 C3 83 10		jmp	X1083		;; Set all of attribute RAM to 0xFF and return
+   479 02C0 CD 15 0A	X02c0:	call	X0a15		;; 0x2140 = 0xe605
+   480 02C3 21 00 20		lxi	h,2000h		;; HL = 0x2000
+   481 02C6 11 D9 02		lxi	d,X02d9		;; DE = 0x02d9
+   482 02C9 06 12		mvi	b,12h		;; B = 18
+   483 02CB CD 8B 03		call	memmov		;; copy 18 bytes from 0x02d9 to 0x2000
+   484 02CE 21 00 30		lxi	h,X3000		;; HL = 0x3000
+   485 02D1 11 00 10		lxi	d,X1000		;; DE = 0x1000
+   486 02D4 06 FF		mvi	b,0ffh		;; B = 0xFF
+   487 02D6 C3 83 10		jmp	memset		;; invoke memset(0x1083) to set all of attribute RAM to 0xFF and return
 			;;
 			;;  0x02d9 through 0x02eb are the initial values for the screen RAM;
 			;;  it's copied into low RAM at 0x2000 during init.
 			;;
 			X02d9:
-   441 02D9			db	07fh,070h,003h
+   493 02D9			db	07fh,070h,003h
             7F 70 03 
-   442 02DC			db	07fh,0f2h,0d0h
+   494 02DC			db	07fh,0f2h,0d0h
             7F F2 D0 
-   443 02DF			db	07fh,070h,006h
+   495 02DF			db	07fh,070h,006h
             7F 70 06 
-   444 02E2			db	07fh,070h,00ch
+   496 02E2			db	07fh,070h,00ch
             7F 70 0C 
-   445 02E5			db	07fh,070h,00fh
+   497 02E5			db	07fh,070h,00fh
             7F 70 0F 
-   446 02E8			db	07fh,070h,003h
+   498 02E8			db	07fh,070h,003h
             7F 70 03 
 			;;
 			;;  Initialize several scratch values. We don't know what all of these are for yet.
 			;;
-   450 02EB 21 12 02	X02eb:	lxi	h,X0212		;; HL = 0x0212
-   451 02EE 22 2D 21		shld	X212d		;; Store 0x1202 at 0x212d
-   452 02F1 3E 35		mvi	a,35h		;; A = 0x35
-   453 02F3 32 2C 21		sta	X212c		;; 0x212c = 0x35
-   454 02F6 3E 01		mvi	a,1		;; A = 1
-   455 02F8 32 5B 20		sta	X205b		;; 0x205b = 1
-   456 02FB 32 76 21		sta	X2176		;; 0x2176 = 1
-   457 02FE 21 FF 07		lxi	h,X07ff		;; HL = 0x07ff
-   458 0301 22 49 21		shld	X2149		;; store 0xff07 at 0x2149
-   459 0304 3E 02		mvi	a,2		;; A = 2
-   460 0306 32 73 20		sta	X2073		;; 0x2073 = 2
-   461 0309 3E F7		mvi	a,0f7h		;; A = 0xf7
-   462 030B 32 FA 20		sta	X20fa		;; 0x20fa = 0xf7
-   463 030E DB 42		in	42h		;; read flags buffer
-   464 0310 E6 04		ani	4		;; And it with 0x04 (check graphics flag)
-   465 0312 3E 01		mvi	a,1		;; A=1
-   466 0314 C2 1A 03		jnz	X031a		;; if no graphics skip
-   467 0317 32 79 20		sta	X2079		;; else store 1 in 0x2079
-   468 031A 3E FF	X031a:	mvi	a,0ffh		;; A = 0xff
-   469 031C 32 0E 21		sta	X210e		;; 0x210e = 0xff
-   470 031F 32 BA 21		sta	X21ba		;; 0x21ba = 0xff
-   471 0322 26 80		mvi	h,80h		;; H = 0x80
-   472 0324 6C			mov	l,h		;; L = 0x80
-   473 0325 22 C0 20		shld	X20c0		;; Store 0x8080 at 0x20c0
-   474 0328 C9			ret
+   502 02EB 21 12 02	X02eb:	lxi	h,212h		;; HL = 0x0212 (530.)
+   503 02EE 22 2D 21		shld	cursor_countdn	;; Store 0x0212 at cursor_countdn [0x212d]
+   504 02F1 3E 35		mvi	a,35h		;; A = 0x35
+   505 02F3 32 2C 21		sta	X212c		;; 0x212c = 0x35
+   506 02F6 3E 01		mvi	a,1		;; A = 1
+   507 02F8 32 5B 20		sta	X205b		;; 0x205b = 1
+   508 02FB 32 76 21		sta	X2176		;; 0x2176 = 1
+   509 02FE 21 FF 07		lxi	h,X07ff		;; HL = 0x07ff
+   510 0301 22 49 21		shld	X2149		;; store 0xff07 at 0x2149
+   511 0304 3E 02		mvi	a,2		;; A = 2
+   512 0306 32 73 20		sta	X2073		;; 0x2073 = 2
+   513 0309 3E F7		mvi	a,0f7h		;; A = 0xf7
+   514 030B 32 FA 20		sta	X20fa		;; 0x20fa = 0xf7
+   515 030E DB 42		in	42h		;; read flags buffer
+   516 0310 E6 04		ani	4		;; And it with 0x04 (check graphics flag)
+   517 0312 3E 01		mvi	a,1		;; A=1
+   518 0314 C2 1A 03		jnz	X031a		;; if no graphics skip
+   519 0317 32 79 20		sta	X2079		;; else store 1 in 0x2079
+   520 031A 3E FF	X031a:	mvi	a,0ffh		;; A = 0xff
+   521 031C 32 0E 21		sta	X210e		;; 0x210e = 0xff
+   522 031F 32 BA 21		sta	cursor_visible	;; set cursor_visible [0x21ba] to 0xff (initially visible)
+   523 0322 26 80		mvi	h,80h		;; H = 0x80
+   524 0324 6C			mov	l,h		;; L = 0x80
+   525 0325 22 C0 20		shld	X20c0		;; Store 0x8080 at 0x20c0
+   526 0328 C9			ret
 			
-   476 0329 3E 40	X0329:	mvi	a,40h
-   477 032B D3 01		out	1
-   478 032D 3A 58 21		lda	X2158
-   479 0330 D3 02		out	2
-   480 0332 3A A4 21		lda	X21a4
-   481 0335 D3 01		out	1
-   482 0337 CD 94 03		call	X0394
-   483 033A 3E 10		mvi	a,10h
-   484 033C 32 C9 21		sta	X21c9
-   485 033F D3 62		out	62h
-   486 0341 C9			ret
+   528 0329 3E 40	X0329:	mvi	a,40h
+   529 032B D3 01		out	1
+   530 032D 3A 58 21		lda	X2158
+   531 0330 D3 02		out	2
+   532 0332 3A A4 21		lda	X21a4
+   533 0335 D3 01		out	1
+   534 0337 CD 94 03		call	X0394
+   535 033A 3E 10		mvi	a,10h
+   536 033C 32 C9 21		sta	X21c9
+   537 033F D3 62		out	62h
+   538 0341 C9			ret
 			
-   488 0342 3A A2 21	X0342:	lda	X21a2
-   489 0345 B7			ora	a
-   490 0346 CA 4B 03		jz	X034b
-   491 0349 3E 10		mvi	a,10h
-   492 034B 47		X034b:	mov	b,a
-   493 034C D3 C2		out	0c2h
-   494 034E 3A 7C 20		lda	X207c
-   495 0351 D3 C2		out	0c2h
-   496 0353 FE 20		cpi	20h
-   497 0355 21 70 09		lxi	h,X0970
-   498 0358 C2 5E 03		jnz	X035e
-   499 035B 21 70 03		lxi	h,X0370
-   500 035E 22 01 20	X035e:	shld	X2001
-   501 0361 3A A8 21		lda	X21a8
-   502 0364 E6 10		ani	10h
-   503 0366 C8			rz
-   504 0367 78			mov	a,b
-   505 0368 D3 C2		out	0c2h
-   506 036A C9			ret
+   540 0342 3A A2 21	X0342:	lda	X21a2
+   541 0345 B7			ora	a
+   542 0346 CA 4B 03		jz	X034b
+   543 0349 3E 10		mvi	a,10h
+   544 034B 47		X034b:	mov	b,a
+   545 034C D3 C2		out	0c2h
+   546 034E 3A 7C 20		lda	X207c
+   547 0351 D3 C2		out	0c2h
+   548 0353 FE 20		cpi	20h
+   549 0355 21 70 09		lxi	h,X0970
+   550 0358 C2 5E 03		jnz	X035e
+   551 035B 21 70 03		lxi	h,X0370
+   552 035E 22 01 20	X035e:	shld	X2001
+   553 0361 3A A8 21		lda	X21a8
+   554 0364 E6 10		ani	10h
+   555 0366 C8			rz
+   556 0367 78			mov	a,b
+   557 0368 D3 C2		out	0c2h
+   558 036A C9			ret
 			
-   508 036B 3A A6 21	X036b:	lda	X21a6
-   509 036E E6 20		ani	20h
-   510 0370 C2 75 03	X0370:	jnz	X0375
-   511 0373 3E 01		mvi	a,1
-   512 0375 F6 0A	X0375:	ori	0ah
-   513 0377 D3 A2		out	0a2h
-   514 0379 3A 5B 21		lda	X215b
-   515 037C F6 0C		ori	0ch
-   516 037E D3 A2		out	0a2h
-   517 0380 C9			ret
+   560 036B 3A A6 21	X036b:	lda	X21a6
+   561 036E E6 20		ani	20h
+   562 0370 C2 75 03	X0370:	jnz	X0375
+   563 0373 3E 01		mvi	a,1
+   564 0375 F6 0A	X0375:	ori	0ah
+   565 0377 D3 A2		out	0a2h
+   566 0379 3A 5B 21		lda	X215b
+   567 037C F6 0C		ori	0ch
+   568 037E D3 A2		out	0a2h
+   569 0380 C9			ret
 			
-   519 0381 3A A2 21	X0381:	lda	X21a2
-   520 0384 B7			ora	a
-   521 0385 CA 63 0B		jz	X0b63
-   522 0388 C3 77 0B		jmp	X0b77
+   571 0381 3A A2 21	X0381:	lda	X21a2
+   572 0384 B7			ora	a
+   573 0385 CA 63 0B		jz	X0b63
+   574 0388 C3 77 0B		jmp	X0b77
 			;;
 			;;  Performs a memmove(HL,DE,B)
 			;;
 			memmov:
-   527 038B 1A		X038b:	ldax	d		;; Load memory at DE into accumulator
-   528 038C 77			mov	m,a		;; Store it at HL
-   529 038D 23			inx	h		;; HL++
-   530 038E 13			inx	d		;; DE++
-   531 038F 05			dcr	b		;; B--
-   532 0390 C2 8B 03		jnz	X038b		;; until B is zero
-   533 0393 C9			ret
+   579 038B 1A		X038b:	ldax	d		;; Load memory at DE into accumulator
+   580 038C 77			mov	m,a		;; Store it at HL
+   581 038D 23			inx	h		;; HL++
+   582 038E 13			inx	d		;; DE++
+   583 038F 05			dcr	b		;; B--
+   584 0390 C2 8B 03		jnz	X038b		;; until B is zero
+   585 0393 C9			ret
 			
-   535 0394 3A A5 21	X0394:	lda	X21a5
-   536 0397 B7			ora	a
-   537 0398 3E 01		mvi	a,1
-   538 039A C2 9F 03		jnz	X039f
-   539 039D 3E 05		mvi	a,5
-   540 039F C3 7B 1F	X039f:	jmp	X1f7b
+   587 0394 3A A5 21	X0394:	lda	X21a5
+   588 0397 B7			ora	a
+   589 0398 3E 01		mvi	a,1
+   590 039A C2 9F 03		jnz	X039f
+   591 039D 3E 05		mvi	a,5
+   592 039F C3 7B 1F	X039f:	jmp	X1f7b
 			
-   542 03A2 CD 81 03	X03a2:	call	X0381
-   543 03A5 CD DB 1D		call	X1ddb
-   544 03A8 CD 6B 03		call	X036b
-   545 03AB C3 42 03		jmp	X0342
+   594 03A2 CD 81 03	X03a2:	call	X0381
+   595 03A5 CD DB 1D		call	X1ddb
+   596 03A8 CD 6B 03		call	X036b
+   597 03AB C3 42 03		jmp	X0342
 			
-   547 03AE CD 88 14	X03ae:	call	X1488
-   548 03B1 CD 87 05		call	X0587
-   549 03B4 21 77 21		lxi	h,X2177
-   550 03B7 7E			mov	a,m
-   551 03B8 B7			ora	a
-   552 03B9 36 00		mvi	m,0
-   553 03BB C4 20 1A		cnz	X1a20
-   554 03BE 3A A5 21		lda	X21a5
-   555 03C1 B7			ora	a
-   556 03C2 CA AE 03		jz	X03ae
-   557 03C5 AF			xra	a
-   558 03C6 32 44 21		sta	X2144
-   559 03C9 C3 AE 03		jmp	X03ae
+   599 03AE CD 88 14	X03ae:	call	X1488
+   600 03B1 CD 87 05		call	X0587
+   601 03B4 21 77 21		lxi	h,X2177
+   602 03B7 7E			mov	a,m
+   603 03B8 B7			ora	a
+   604 03B9 36 00		mvi	m,0
+   605 03BB C4 20 1A		cnz	X1a20
+   606 03BE 3A A5 21		lda	X21a5
+   607 03C1 B7			ora	a
+   608 03C2 CA AE 03		jz	X03ae
+   609 03C5 AF			xra	a
+   610 03C6 32 44 21		sta	X2144
+   611 03C9 C3 AE 03		jmp	X03ae
 			;;
 			;;  Receiver interrupt handler
 			;;
-   563 03CC F5		X03cc:	push	psw
-   564 03CD C5			push	b
-   565 03CE E5			push	h
-   566 03CF DB 00		in	0		;; Read from PUSART data
-   567 03D1 E6 7F		ani	7fh
-   568 03D3 CA 3A 04		jz	X043a
-   569 03D6 4F			mov	c,a
-   570 03D7 3A A5 21		lda	X21a5
-   571 03DA B7			ora	a
-   572 03DB C2 3A 04		jnz	X043a
-   573 03DE DB 01		in	1		;; Read from PUSART ctrl
-   574 03E0 E6 38		ani	38h
-   575 03E2 CA ED 03		jz	X03ed
-   576 03E5 0E 1A		mvi	c,1ah
-   577 03E7 3E 27		mvi	a,27h
-   578 03E9 F6 10		ori	10h
-   579 03EB D3 01		out	1
-   580 03ED 79		X03ed:	mov	a,c
-   581 03EE FE 7F		cpi	7fh
-   582 03F0 CA 37 04		jz	X0437
-   583 03F3 3A A7 21		lda	X21a7
-   584 03F6 E6 10		ani	10h
-   585 03F8 79			mov	a,c
-   586 03F9 CA 09 04		jz	X0409
-   587 03FC 21 C2 21		lxi	h,X21c2
-   588 03FF FE 11		cpi	11h
-   589 0401 CA 3E 04		jz	X043e
-   590 0404 FE 13		cpi	13h
-   591 0406 CA 44 04		jz	X0444
-   592 0409 21 C0 20	X0409:	lxi	h,X20c0
-   593 040C 4E			mov	c,m
-   594 040D 44			mov	b,h
-   595 040E 02			stax	b
-   596 040F 79			mov	a,c
-   597 0410 3C			inr	a
-   598 0411 E6 BF		ani	0bfh
-   599 0413 77			mov	m,a
-   600 0414 47			mov	b,a
-   601 0415 3A C1 20		lda	X20c1
-   602 0418 90			sub	b
-   603 0419 C2 27 04		jnz	X0427
-   604 041C 71			mov	m,c
-   605 041D 78			mov	a,b
-   606 041E 3C			inr	a
-   607 041F E6 BF		ani	0bfh
-   608 0421 6F			mov	l,a
-   609 0422 36 1A		mvi	m,1ah
-   610 0424 C3 31 04		jmp	X0431
+   615 03CC F5		X03cc:	push	psw
+   616 03CD C5			push	b
+   617 03CE E5			push	h
+   618 03CF DB 00		in	0		;; Read from PUSART data
+   619 03D1 E6 7F		ani	7fh
+   620 03D3 CA 3A 04		jz	X043a
+   621 03D6 4F			mov	c,a
+   622 03D7 3A A5 21		lda	X21a5
+   623 03DA B7			ora	a
+   624 03DB C2 3A 04		jnz	X043a
+   625 03DE DB 01		in	1		;; Read from PUSART ctrl
+   626 03E0 E6 38		ani	38h
+   627 03E2 CA ED 03		jz	X03ed
+   628 03E5 0E 1A		mvi	c,1ah
+   629 03E7 3E 27		mvi	a,27h
+   630 03E9 F6 10		ori	10h
+   631 03EB D3 01		out	1
+   632 03ED 79		X03ed:	mov	a,c
+   633 03EE FE 7F		cpi	7fh
+   634 03F0 CA 37 04		jz	X0437
+   635 03F3 3A A7 21		lda	X21a7
+   636 03F6 E6 10		ani	10h
+   637 03F8 79			mov	a,c
+   638 03F9 CA 09 04		jz	X0409
+   639 03FC 21 C2 21		lxi	h,X21c2
+   640 03FF FE 11		cpi	11h
+   641 0401 CA 3E 04		jz	X043e
+   642 0404 FE 13		cpi	13h
+   643 0406 CA 44 04		jz	X0444
+   644 0409 21 C0 20	X0409:	lxi	h,X20c0
+   645 040C 4E			mov	c,m
+   646 040D 44			mov	b,h
+   647 040E 02			stax	b
+   648 040F 79			mov	a,c
+   649 0410 3C			inr	a
+   650 0411 E6 BF		ani	0bfh
+   651 0413 77			mov	m,a
+   652 0414 47			mov	b,a
+   653 0415 3A C1 20		lda	X20c1
+   654 0418 90			sub	b
+   655 0419 C2 27 04		jnz	X0427
+   656 041C 71			mov	m,c
+   657 041D 78			mov	a,b
+   658 041E 3C			inr	a
+   659 041F E6 BF		ani	0bfh
+   660 0421 6F			mov	l,a
+   661 0422 36 1A		mvi	m,1ah
+   662 0424 C3 31 04		jmp	X0431
 			
-   612 0427 F2 2C 04	X0427:	jp	X042c
-   613 042A C6 40		adi	40h
-   614 042C FE 20	X042c:	cpi	20h
-   615 042E C2 37 04		jnz	X0437
-   616 0431 01 13 01	X0431:	lxi	b,X0113
-   617 0434 CD 7E 0F		call	X0f7e
-   618 0437 CD 47 0E	X0437:	call	X0e47
-   619 043A E1		X043a:	pop	h
-   620 043B C1			pop	b
-   621 043C F1			pop	psw
-   622 043D C9			ret
+   664 0427 F2 2C 04	X0427:	jp	X042c
+   665 042A C6 40		adi	40h
+   666 042C FE 20	X042c:	cpi	20h
+   667 042E C2 37 04		jnz	X0437
+   668 0431 01 13 01	X0431:	lxi	b,X0113
+   669 0434 CD 7E 0F		call	X0f7e
+   670 0437 CD 47 0E	X0437:	call	X0e47
+   671 043A E1		X043a:	pop	h
+   672 043B C1			pop	b
+   673 043C F1			pop	psw
+   674 043D C9			ret
 			;;
 			;;  End of keyboard interrupt handler
 			;;
-   626 043E 3E FE	X043e:	mvi	a,0feh
-   627 0440 A6			ana	m
-   628 0441 C3 47 04		jmp	X0447
+   678 043E 3E FE	X043e:	mvi	a,0feh
+   679 0440 A6			ana	m
+   680 0441 C3 47 04		jmp	X0447
 			
-   630 0444 3E 01	X0444:	mvi	a,1
-   631 0446 B6			ora	m
-   632 0447 77		X0447:	mov	m,a
-   633 0448 C3 37 04		jmp	X0437
+   682 0444 3E 01	X0444:	mvi	a,1
+   683 0446 B6			ora	m
+   684 0447 77		X0447:	mov	m,a
+   685 0448 C3 37 04		jmp	X0437
 			
-   635 044B		X044b:	db	30h
+   687 044B		X044b:	db	30h
             30 
-   636 044C 29			dad	h
-   637 044D 31 21 32		lxi	sp,X3221
-   638 0450 40			mov	b,b
-   639 0451 33			inx	sp
-   640 0452 23			inx	h
-   641 0453 34			inr	m
-   642 0454 24			inr	h
-   643 0455 35			dcr	m
-   644 0456 25			dcr	h
-   645 0457 36 5E		mvi	m,5eh
-   646 0459 37			stc
-   647 045A 26 38		mvi	h,38h
-   648 045C 2A 39 28		lhld	X2839
-   649 045F 2D			dcr	l
-   650 0460 5F			mov	e,a
-   651 0461 3D			dcr	a
-   652 0462 2B			dcx	h
-   653 0463 60			mov	h,b
-   654 0464 7E			mov	a,m
-   655 0465 5B			mov	e,e
-   656 0466 7B			mov	a,e
-   657 0467 5D			mov	e,l
-   658 0468 7D			mov	a,l
-   659 0469 3B			dcx	sp
-   660 046A 3A 2F 3F		lda	X3f2f
-   661 046D 27			daa
-   662 046E 22 2C 3C		shld	X3c2c
-   663 0471 2E 3E		mvi	l,3eh
-   664 0473 5C			mov	e,h
-   665 0474 7C			mov	a,h
-   666 0475			db	20h
+   688 044C 29			dad	h
+   689 044D 31 21 32		lxi	sp,X3221
+   690 0450 40			mov	b,b
+   691 0451 33			inx	sp
+   692 0452 23			inx	h
+   693 0453 34			inr	m
+   694 0454 24			inr	h
+   695 0455 35			dcr	m
+   696 0456 25			dcr	h
+   697 0457 36 5E		mvi	m,5eh
+   698 0459 37			stc
+   699 045A 26 38		mvi	h,38h
+   700 045C 2A 39 28		lhld	X2839
+   701 045F 2D			dcr	l
+   702 0460 5F			mov	e,a
+   703 0461 3D			dcr	a
+   704 0462 2B			dcx	h
+   705 0463 60			mov	h,b
+   706 0464 7E			mov	a,m
+   707 0465 5B			mov	e,e
+   708 0466 7B			mov	a,e
+   709 0467 5D			mov	e,l
+   710 0468 7D			mov	a,l
+   711 0469 3B			dcx	sp
+   712 046A 3A 2F 3F		lda	X3f2f
+   713 046D 27			daa
+   714 046E 22 2C 3C		shld	X3c2c
+   715 0471 2E 3E		mvi	l,3eh
+   716 0473 5C			mov	e,h
+   717 0474 7C			mov	a,h
+   718 0475			db	20h
             20 
 			X0476:
-   668 0476		KBTab:	db	 20h,  7fh,  7fh,  7fh, 00h, 'p', 'o', 'y', 't', 'w', 'q'
+   720 0476		KBTab:	db	 20h,  7fh,  7fh,  7fh, 00h, 'p', 'o', 'y', 't', 'w', 'q'
             20 7F 7F 7F 
             00 70 6F 79 
             74 77 71 
-   669 0481			db	0c3h,  00h,  00h,  00h, ']', '[', 'i', 'u', 'r', 'e', '1'
+   721 0481			db	0c3h,  00h,  00h,  00h, ']', '[', 'i', 'u', 'r', 'e', '1'
             C3 00 00 00 
             5D 5B 69 75 
             72 65 31 
-   670 048C			db	0c4h,  00h, 0c2h, 081h, '`', '-', '9', '7', '4', '3', 1bh
+   722 048C			db	0c4h,  00h, 0c2h, 081h, '`', '-', '9', '7', '4', '3', 1bh
             C4 00 C2 81 
             60 2D 39 37 
             34 33 1B 
-   671 0497			db	0c1h, 0d2h, 0d0h,  08h, '=', '0', '8', '6', '5', '2', 09h
+   723 0497			db	0c1h, 0d2h, 0d0h,  08h, '=', '0', '8', '6', '5', '2', 09h
             C1 D2 D0 08 
             3D 30 38 36 
             35 32 09 
-   672 04A2			db	0b7h, 0d3h, 0d1h, 0b0h, 0ah, '\', 'l', 'k', 'g', 'f', 'a'
+   724 04A2			db	0b7h, 0d3h, 0d1h, 0b0h, 0ah, '\', 'l', 'k', 'g', 'f', 'a'
             B7 D3 D1 B0 
             0A 5C 6C 6B 
             67 66 61 
-   673 04AD			db	0b8h,  8dh, 0b2h, 0b1h, 00h, 27h, 3bh, 'j', 'h', 'd', 's'
+   725 04AD			db	0b8h,  8dh, 0b2h, 0b1h, 00h, 27h, 3bh, 'j', 'h', 'd', 's'
             B8 8D B2 B1 
             00 27 3B 6A 
             68 64 73 
-   674 04B8			db	0aeh, 0ach, 0b5h, 0b4h, 0dh, '.', ',', 'n', 'b', 'x', 82h
+   726 04B8			db	0aeh, 0ach, 0b5h, 0b4h, 0dh, '.', ',', 'n', 'b', 'x', 82h
             AE AC B5 B4 
             0D 2E 2C 6E 
             62 78 82 
-   675 04C3			db	0b9h, 0b3h, 0b6h, 0adh, 00h, '/', 'm', ' ', 'v', 'c', 'z'
+   727 04C3			db	0b9h, 0b3h, 0b6h, 0adh, 00h, '/', 'm', ' ', 'v', 'c', 'z'
             B9 B3 B6 AD 
             00 2F 6D 20 
             76 63 7A 
-   676 04CE FF			rst	7
+   728 04CE FF			rst	7
 			;;
 			;; Vertical interrupt handler
 			;;
-   680 04CF F5		X04cf:	push	psw
-   681 04D0 E5			push	h
-   682 04D1 D5			push	d
-   683 04D2 CD 4E 10		call	X104e
-   684 04D5 C5			push	b
-   685 04D6 3E 09		mvi	a,9
-   686 04D8 D3 A2		out	0a2h
-   687 04DA FB			ei
-   688 04DB 3A 65 20		lda	X2065
-   689 04DE B7			ora	a
-   690 04DF C2 0B 05		jnz	X050b
-   691 04E2 21 51 20		lxi	h,X2051
-   692 04E5 B6			ora	m
-   693 04E6 CA 3E 05		jz	X053e
-   694 04E9 3E 01		mvi	a,1
-   695 04EB 32 65 20		sta	X2065
-   696 04EE B6			ora	m
-   697 04EF 36 00		mvi	m,0
-   698 04F1 3E 01		mvi	a,1
-   699 04F3 32 5B 20		sta	X205b
-   700 04F6 3A 56 21		lda	X2156
-   701 04F9 F2 05 05		jp	X0505
-   702 04FC 3E 99		mvi	a,99h
-   703 04FE 32 5B 20		sta	X205b
-   704 0501 3A 55 21		lda	X2155
-   705 0504 3D			dcr	a
-   706 0505 CD 2F 12	X0505:	call	X122f
-   707 0508 32 7A 20		sta	X207a
-   708 050B 01 5B 20	X050b:	lxi	b,X205b
-   709 050E 0A			ldax	b
-   710 050F 21 5A 20		lxi	h,X205a
-   711 0512 86			add	m
-   712 0513 27			daa
-   713 0514 E6 0F		ani	0fh
-   714 0516 77			mov	m,a
-   715 0517 57			mov	d,a
-   716 0518 E6 03		ani	3
-   717 051A D3 A2		out	0a2h
-   718 051C 7A			mov	a,d
-   719 051D 1F			rar
-   720 051E A7			ana	a
-   721 051F 1F			rar
-   722 0520 F6 04		ori	4
-   723 0522 D3 A2		out	0a2h
-   724 0524 7A			mov	a,d
-   725 0525 B7			ora	a
-   726 0526 C2 3E 05		jnz	X053e
-   727 0529 32 65 20		sta	X2065
-   728 052C 0A			ldax	b
-   729 052D B7			ora	a
-   730 052E 3A 56 21		lda	X2156
-   731 0531 FA 38 05		jm	X0538
-   732 0534 3A 55 21		lda	X2155
-   733 0537 3D			dcr	a
-   734 0538 CD CE 11	X0538:	call	X11ce
-   735 053B 32 7A 20		sta	X207a
-   736 053E 21 78 20	X053e:	lxi	h,X2078
-   737 0541 7E			mov	a,m
-   738 0542 B7			ora	a
-   739 0543 CA 4F 05		jz	X054f
-   740 0546 35			dcr	m
-   741 0547 E6 04		ani	4
-   742 0549 0F			rrc
-   743 054A 0F			rrc
-   744 054B 0F			rrc
-   745 054C 32 46 21		sta	X2146
-   746 054F 21 2C 21	X054f:	lxi	h,X212c
-   747 0552 7E			mov	a,m
-   748 0553 3D			dcr	a
-   749 0554 C2 69 05		jnz	X0569
-   750 0557 36 35		mvi	m,35h
-   751 0559 3E 08		mvi	a,8
-   752 055B D3 A2		out	0a2h
-   753 055D 21 CB 21		lxi	h,X21cb
-   754 0560 7E			mov	a,m
-   755 0561 B7			ora	a
-   756 0562 CA 6A 05		jz	X056a
-   757 0565 D3 A2		out	0a2h
-   758 0567 EE 01		xri	1
-   759 0569 77		X0569:	mov	m,a
-   760 056A 3E 40	X056a:	mvi	a,40h
-   761 056C 32 48 21		sta	X2148
-   762 056F 21 7F 20		lxi	h,X207f
-   763 0572 34			inr	m
-   764 0573 3A A3 21		lda	X21a3
-   765 0576 D3 42		out	42h
-   766 0578 3A 58 21		lda	X2158
-   767 057B D3 02		out	2
-   768 057D 3A C9 21		lda	X21c9
-   769 0580 D3 62		out	62h
-   770 0582 C1			pop	b
-   771 0583 D1			pop	d
-   772 0584 E1			pop	h
-   773 0585 F1			pop	psw
-   774 0586 C9			ret
+   732 04CF F5		X04cf:	push	psw
+   733 04D0 E5			push	h
+   734 04D1 D5			push	d
+   735 04D2 CD 4E 10		call	X104e
+   736 04D5 C5			push	b
+   737 04D6 3E 09		mvi	a,9
+   738 04D8 D3 A2		out	0a2h
+   739 04DA FB			ei
+   740 04DB 3A 65 20		lda	X2065
+   741 04DE B7			ora	a
+   742 04DF C2 0B 05		jnz	X050b
+   743 04E2 21 51 20		lxi	h,X2051
+   744 04E5 B6			ora	m
+   745 04E6 CA 3E 05		jz	X053e
+   746 04E9 3E 01		mvi	a,1
+   747 04EB 32 65 20		sta	X2065
+   748 04EE B6			ora	m
+   749 04EF 36 00		mvi	m,0
+   750 04F1 3E 01		mvi	a,1
+   751 04F3 32 5B 20		sta	X205b
+   752 04F6 3A 56 21		lda	X2156
+   753 04F9 F2 05 05		jp	X0505
+   754 04FC 3E 99		mvi	a,99h
+   755 04FE 32 5B 20		sta	X205b
+   756 0501 3A 55 21		lda	X2155
+   757 0504 3D			dcr	a
+   758 0505 CD 2F 12	X0505:	call	X122f
+   759 0508 32 7A 20		sta	X207a
+   760 050B 01 5B 20	X050b:	lxi	b,X205b
+   761 050E 0A			ldax	b
+   762 050F 21 5A 20		lxi	h,X205a
+   763 0512 86			add	m
+   764 0513 27			daa
+   765 0514 E6 0F		ani	0fh
+   766 0516 77			mov	m,a
+   767 0517 57			mov	d,a
+   768 0518 E6 03		ani	3
+   769 051A D3 A2		out	0a2h
+   770 051C 7A			mov	a,d
+   771 051D 1F			rar
+   772 051E A7			ana	a
+   773 051F 1F			rar
+   774 0520 F6 04		ori	4
+   775 0522 D3 A2		out	0a2h
+   776 0524 7A			mov	a,d
+   777 0525 B7			ora	a
+   778 0526 C2 3E 05		jnz	X053e
+   779 0529 32 65 20		sta	X2065
+   780 052C 0A			ldax	b
+   781 052D B7			ora	a
+   782 052E 3A 56 21		lda	X2156
+   783 0531 FA 38 05		jm	X0538
+   784 0534 3A 55 21		lda	X2155
+   785 0537 3D			dcr	a
+   786 0538 CD CE 11	X0538:	call	X11ce
+   787 053B 32 7A 20		sta	X207a
+   788 053E 21 78 20	X053e:	lxi	h,X2078
+   789 0541 7E			mov	a,m
+   790 0542 B7			ora	a
+   791 0543 CA 4F 05		jz	X054f
+   792 0546 35			dcr	m
+   793 0547 E6 04		ani	4
+   794 0549 0F			rrc
+   795 054A 0F			rrc
+   796 054B 0F			rrc
+   797 054C 32 46 21		sta	X2146
+   798 054F 21 2C 21	X054f:	lxi	h,X212c
+   799 0552 7E			mov	a,m
+   800 0553 3D			dcr	a
+   801 0554 C2 69 05		jnz	X0569
+   802 0557 36 35		mvi	m,35h
+   803 0559 3E 08		mvi	a,8
+   804 055B D3 A2		out	0a2h
+   805 055D 21 CB 21		lxi	h,X21cb
+   806 0560 7E			mov	a,m
+   807 0561 B7			ora	a
+   808 0562 CA 6A 05		jz	X056a
+   809 0565 D3 A2		out	0a2h
+   810 0567 EE 01		xri	1
+   811 0569 77		X0569:	mov	m,a
+   812 056A 3E 40	X056a:	mvi	a,40h
+   813 056C 32 48 21		sta	X2148
+   814 056F 21 7F 20		lxi	h,X207f
+   815 0572 34			inr	m
+   816 0573 3A A3 21		lda	X21a3
+   817 0576 D3 42		out	42h
+   818 0578 3A 58 21		lda	X2158
+   819 057B D3 02		out	2
+   820 057D 3A C9 21		lda	X21c9
+   821 0580 D3 62		out	62h
+   822 0582 C1			pop	b
+   823 0583 D1			pop	d
+   824 0584 E1			pop	h
+   825 0585 F1			pop	psw
+   826 0586 C9			ret
 			
-   776 0587 3A A5 21	X0587:	lda	X21a5
-   777 058A 21 7B 20		lxi	h,X207b
-   778 058D B6			ora	m
-   779 058E C0			rnz
-   780 058F CD 75 06		call	X0675
-   781 0592 C8			rz
-   782 0593 47		X0593:	mov	b,a
-   783 0594 3A 7B 20		lda	X207b
-   784 0597 B7			ora	a
-   785 0598 78			mov	a,b
-   786 0599 C2 A9 05		jnz	X05a9
-   787 059C 3A 79 20		lda	X2079
-   788 059F 07			rlc
-   789 05A0 78			mov	a,b
-   790 05A1 DA A9 05		jc	X05a9
-   791 05A4 FE 20		cpi	20h
-   792 05A6 DA B2 08		jc	X08b2
-   793 05A9 2A 40 21	X05a9:	lhld	X2140
-   794 05AC E9			pchl
+   828 0587 3A A5 21	X0587:	lda	X21a5
+   829 058A 21 7B 20		lxi	h,X207b
+   830 058D B6			ora	m
+   831 058E C0			rnz
+   832 058F CD 75 06		call	X0675
+   833 0592 C8			rz
+   834 0593 47		X0593:	mov	b,a
+   835 0594 3A 7B 20		lda	X207b
+   836 0597 B7			ora	a
+   837 0598 78			mov	a,b
+   838 0599 C2 A9 05		jnz	X05a9
+   839 059C 3A 79 20		lda	X2079
+   840 059F 07			rlc
+   841 05A0 78			mov	a,b
+   842 05A1 DA A9 05		jc	X05a9
+   843 05A4 FE 20		cpi	20h
+   844 05A6 DA B2 08		jc	X08b2
+   845 05A9 2A 40 21	X05a9:	lhld	X2140
+   846 05AC E9			pchl
 			
-   796 05AD FE 1B	X05ad:	cpi	1bh
-   797 05AF C2 CC 05		jnz	X05cc
-   798 05B2 21 B8 05		lxi	h,X05b8
-   799 05B5 C3 18 0A		jmp	X0a18
+   848 05AD FE 1B	X05ad:	cpi	1bh
+   849 05AF C2 CC 05		jnz	X05cc
+   850 05B2 21 B8 05		lxi	h,X05b8
+   851 05B5 C3 18 0A		jmp	X0a18
 			
-   801 05B8 FE 32	X05b8:	cpi	32h
-   802 05BA C2 C5 05		jnz	X05c5
-   803 05BD 3E 01		mvi	a,1
-   804 05BF 32 79 20		sta	X2079
-   805 05C2 C3 15 0A		jmp	X0a15
+   853 05B8 FE 32	X05b8:	cpi	32h
+   854 05BA C2 C5 05		jnz	X05c5
+   855 05BD 3E 01		mvi	a,1
+   856 05BF 32 79 20		sta	X2079
+   857 05C2 C3 15 0A		jmp	X0a15
 			
-   807 05C5 47		X05c5:	mov	b,a
-   808 05C6 3E 1B		mvi	a,1bh
-   809 05C8 CD D2 05		call	X05d2
-   810 05CB 78			mov	a,b
-   811 05CC CD D2 05	X05cc:	call	X05d2
-   812 05CF C3 62 0C		jmp	X0c62
+   859 05C5 47		X05c5:	mov	b,a
+   860 05C6 3E 1B		mvi	a,1bh
+   861 05C8 CD D2 05		call	X05d2
+   862 05CB 78			mov	a,b
+   863 05CC CD D2 05	X05cc:	call	X05d2
+   864 05CF C3 62 0C		jmp	X0c62
 			
-   814 05D2 4F		X05d2:	mov	c,a
-   815 05D3 C5		X05d3:	push	b
-   816 05D4 CD 88 14		call	X1488
-   817 05D7 C1			pop	b
-   818 05D8 DB 42		in	42h
-   819 05DA E6 04		ani	4
-   820 05DC C2 D3 05		jnz	X05d3
-   821 05DF 79			mov	a,c
-   822 05E0 D3 E2		out	0e2h
-   823 05E2 C9			ret
+   866 05D2 4F		X05d2:	mov	c,a
+   867 05D3 C5		X05d3:	push	b
+   868 05D4 CD 88 14		call	X1488
+   869 05D7 C1			pop	b
+   870 05D8 DB 42		in	42h
+   871 05DA E6 04		ani	4
+   872 05DC C2 D3 05		jnz	X05d3
+   873 05DF 79			mov	a,c
+   874 05E0 D3 E2		out	0e2h
+   875 05E2 C9			ret
 			
-   825 05E3 CD 46 0C	X05e3:	call	X0c46
-   826 05E6 F5		X05e6:	push	psw
-   827 05E7 FE 7F		cpi	7fh
-   828 05E9 CA 73 06		jz	X0673
-   829 05EC E5			push	h
-   830 05ED D5			push	d
-   831 05EE C5			push	b
-   832 05EF 4F			mov	c,a
-   833 05F0 21 FC 20		lxi	h,X20fc
-   834 05F3 56			mov	d,m
-   835 05F4 23			inx	h
-   836 05F5 7A			mov	a,d
-   837 05F6 85			add	l
-   838 05F7 6F			mov	l,a
-   839 05F8 7A			mov	a,d
-   840 05F9 D6 02		sui	2
-   841 05FB F2 FF 05		jp	X05ff
-   842 05FE 7A			mov	a,d
-   843 05FF 32 FC 20	X05ff:	sta	X20fc
-   844 0602 56			mov	d,m
-   845 0603 3A FA 20		lda	X20fa
-   846 0606 B2			ora	d
-   847 0607 47			mov	b,a
-   848 0608 7A			mov	a,d
-   849 0609 07			rlc
-   850 060A 79			mov	a,c
-   851 060B D2 16 06		jnc	X0616
-   852 060E D6 5F		sui	5fh
-   853 0610 FE 20		cpi	20h
-   854 0612 D2 16 06		jnc	X0616
-   855 0615 4F			mov	c,a
-   856 0616 7A		X0616:	mov	a,d
-   857 0617 E6 40		ani	40h
-   858 0619 79			mov	a,c
-   859 061A CA 24 06		jz	X0624
-   860 061D FE 23		cpi	23h
-   861 061F C2 24 06		jnz	X0624
-   862 0622 0E 1E		mvi	c,1eh
-   863 0624 3A FB 20	X0624:	lda	X20fb
-   864 0627 B1			ora	c
-   865 0628 4F			mov	c,a
-   866 0629 3A 42 21		lda	X2142
-   867 062C B7			ora	a
-   868 062D CA 41 06		jz	X0641
-   869 0630 21 F8 20		lxi	h,X20f8
-   870 0633 3A 53 21		lda	X2153
-   871 0636 BE			cmp	m
-   872 0637 C2 41 06		jnz	X0641
-   873 063A 36 00		mvi	m,0
-   874 063C C5			push	b
-   875 063D CD 55 09		call	X0955
-   876 0640 C1			pop	b
-   877 0641 2A F6 20	X0641:	lhld	X20f6
-   878 0644 71			mov	m,c
-   879 0645 7C			mov	a,h
-   880 0646 C6 10		adi	10h
-   881 0648 67			mov	h,a
-   882 0649 70			mov	m,b
-   883 064A 78			mov	a,b
-   884 064B 32 F5 20		sta	X20f5
-   885 064E 21 F4 20		lxi	h,X20f4
-   886 0651 71			mov	m,c
-   887 0652 21 F8 20		lxi	h,X20f8
-   888 0655 3A 53 21		lda	X2153
-   889 0658 BE			cmp	m
-   890 0659 C2 68 06		jnz	X0668
-   891 065C 79			mov	a,c
-   892 065D 32 F4 20		sta	X20f4
-   893 0660 3A A8 21		lda	X21a8
-   894 0663 E6 40		ani	40h
-   895 0665 C3 6D 06		jmp	X066d
+   877 05E3 CD 46 0C	X05e3:	call	X0c46
+   878 05E6 F5		X05e6:	push	psw
+   879 05E7 FE 7F		cpi	7fh
+   880 05E9 CA 73 06		jz	X0673
+   881 05EC E5			push	h
+   882 05ED D5			push	d
+   883 05EE C5			push	b
+   884 05EF 4F			mov	c,a
+   885 05F0 21 FC 20		lxi	h,X20fc
+   886 05F3 56			mov	d,m
+   887 05F4 23			inx	h
+   888 05F5 7A			mov	a,d
+   889 05F6 85			add	l
+   890 05F7 6F			mov	l,a
+   891 05F8 7A			mov	a,d
+   892 05F9 D6 02		sui	2
+   893 05FB F2 FF 05		jp	X05ff
+   894 05FE 7A			mov	a,d
+   895 05FF 32 FC 20	X05ff:	sta	X20fc
+   896 0602 56			mov	d,m
+   897 0603 3A FA 20		lda	X20fa
+   898 0606 B2			ora	d
+   899 0607 47			mov	b,a
+   900 0608 7A			mov	a,d
+   901 0609 07			rlc
+   902 060A 79			mov	a,c
+   903 060B D2 16 06		jnc	X0616
+   904 060E D6 5F		sui	5fh
+   905 0610 FE 20		cpi	20h
+   906 0612 D2 16 06		jnc	X0616
+   907 0615 4F			mov	c,a
+   908 0616 7A		X0616:	mov	a,d
+   909 0617 E6 40		ani	40h
+   910 0619 79			mov	a,c
+   911 061A CA 24 06		jz	X0624
+   912 061D FE 23		cpi	23h
+   913 061F C2 24 06		jnz	X0624
+   914 0622 0E 1E		mvi	c,1eh
+   915 0624 3A FB 20	X0624:	lda	X20fb
+   916 0627 B1			ora	c
+   917 0628 4F			mov	c,a
+   918 0629 3A 42 21		lda	X2142
+   919 062C B7			ora	a
+   920 062D CA 41 06		jz	X0641
+   921 0630 21 F8 20		lxi	h,X20f8
+   922 0633 3A 53 21		lda	X2153
+   923 0636 BE			cmp	m
+   924 0637 C2 41 06		jnz	X0641
+   925 063A 36 00		mvi	m,0
+   926 063C C5			push	b
+   927 063D CD 55 09		call	X0955
+   928 0640 C1			pop	b
+   929 0641 2A F6 20	X0641:	lhld	X20f6
+   930 0644 71			mov	m,c
+   931 0645 7C			mov	a,h
+   932 0646 C6 10		adi	10h
+   933 0648 67			mov	h,a
+   934 0649 70			mov	m,b
+   935 064A 78			mov	a,b
+   936 064B 32 F5 20		sta	X20f5
+   937 064E 21 F4 20		lxi	h,X20f4
+   938 0651 71			mov	m,c
+   939 0652 21 F8 20		lxi	h,X20f8
+   940 0655 3A 53 21		lda	X2153
+   941 0658 BE			cmp	m
+   942 0659 C2 68 06		jnz	X0668
+   943 065C 79			mov	a,c
+   944 065D 32 F4 20		sta	X20f4
+   945 0660 3A A8 21		lda	X21a8
+   946 0663 E6 40		ani	40h
+   947 0665 C3 6D 06		jmp	X066d
 			
-   897 0668 34		X0668:	inr	m
-   898 0669 CD 36 16		call	X1636
-   899 066C AF			xra	a
-   900 066D 32 42 21	X066d:	sta	X2142
-   901 0670 C1		X0670:	pop	b
-   902 0671 D1			pop	d
-   903 0672 E1			pop	h
-   904 0673 F1		X0673:	pop	psw
-   905 0674 C9			ret
+   949 0668 34		X0668:	inr	m
+   950 0669 CD 36 16		call	X1636
+   951 066C AF			xra	a
+   952 066D 32 42 21	X066d:	sta	X2142
+   953 0670 C1		X0670:	pop	b
+   954 0671 D1			pop	d
+   955 0672 E1			pop	h
+   956 0673 F1		X0673:	pop	psw
+   957 0674 C9			ret
 			
-   907 0675 3A C4 21	X0675:	lda	X21c4
-   908 0678 B7			ora	a
-   909 0679 C2 85 06		jnz	X0685
-   910 067C 21 C0 20		lxi	h,X20c0
-   911 067F 7E			mov	a,m
-   912 0680 23			inx	h
-   913 0681 96			sub	m
-   914 0682 C2 87 06		jnz	X0687
-   915 0685 AF		X0685:	xra	a
-   916 0686 C9			ret
+   959 0675 3A C4 21	X0675:	lda	X21c4
+   960 0678 B7			ora	a
+   961 0679 C2 85 06		jnz	X0685
+   962 067C 21 C0 20		lxi	h,X20c0
+   963 067F 7E			mov	a,m
+   964 0680 23			inx	h
+   965 0681 96			sub	m
+   966 0682 C2 87 06		jnz	X0687
+   967 0685 AF		X0685:	xra	a
+   968 0686 C9			ret
 			
-   918 0687 6E		X0687:	mov	l,m
-   919 0688 26 20		mvi	h,20h
-   920 068A 56			mov	d,m
-   921 068B 21 C1 20		lxi	h,X20c1
-   922 068E 7E			mov	a,m
-   923 068F 3C			inr	a
-   924 0690 E6 BF		ani	0bfh
-   925 0692 F6 80		ori	80h
-   926 0694 77			mov	m,a
-   927 0695 2B			dcx	h
-   928 0696 96			sub	m
-   929 0697 F2 9C 06		jp	X069c
-   930 069A C6 40		adi	40h
-   931 069C FE 30	X069c:	cpi	30h
-   932 069E C2 A7 06		jnz	X06a7
-   933 06A1 01 11 01		lxi	b,X0111
-   934 06A4 CD 7E 0F		call	X0f7e
-   935 06A7 7A		X06a7:	mov	a,d
-   936 06A8 B7			ora	a
-   937 06A9 C9			ret
+   970 0687 6E		X0687:	mov	l,m
+   971 0688 26 20		mvi	h,20h
+   972 068A 56			mov	d,m
+   973 068B 21 C1 20		lxi	h,X20c1
+   974 068E 7E			mov	a,m
+   975 068F 3C			inr	a
+   976 0690 E6 BF		ani	0bfh
+   977 0692 F6 80		ori	80h
+   978 0694 77			mov	m,a
+   979 0695 2B			dcx	h
+   980 0696 96			sub	m
+   981 0697 F2 9C 06		jp	X069c
+   982 069A C6 40		adi	40h
+   983 069C FE 30	X069c:	cpi	30h
+   984 069E C2 A7 06		jnz	X06a7
+   985 06A1 01 11 01		lxi	b,X0111
+   986 06A4 CD 7E 0F		call	X0f7e
+   987 06A7 7A		X06a7:	mov	a,d
+   988 06A8 B7			ora	a
+   989 06A9 C9			ret
 			
-   939 06AA 3A 68 20	X06aa:	lda	X2068		; A <- [Keys flag buffer]
-   940 06AD 5F			mov	e,a
-   941 06AE E6 80		ani	80h		; bit 7 set?
-   942 06B0 C8			rz			; return if not
-   943 06B1 21 41 08		lxi	h,X0841
-   944 06B4 E5			push	h
-   945 06B5 7B			mov	a,e
-   946 06B6 E6 07		ani	7
-   947 06B8 FE 04		cpi	4
-   948 06BA FA C2 06		jm	X06c2
-   949 06BD AF			xra	a
-   950 06BE 32 67 20		sta	X2067
-   951 06C1 C9			ret
+   991 06AA 3A 68 20	X06aa:	lda	X2068		; A <- [Keys flag buffer]
+   992 06AD 5F			mov	e,a
+   993 06AE E6 80		ani	80h		; bit 7 set?
+   994 06B0 C8			rz			; return if not
+   995 06B1 21 41 08		lxi	h,X0841
+   996 06B4 E5			push	h
+   997 06B5 7B			mov	a,e
+   998 06B6 E6 07		ani	7
+   999 06B8 FE 04		cpi	4
+  1000 06BA FA C2 06		jm	X06c2
+  1001 06BD AF			xra	a
+  1002 06BE 32 67 20		sta	X2067
+  1003 06C1 C9			ret
 			
-   953 06C2 57		X06c2:	mov	d,a
-   954 06C3 0E 00		mvi	c,0
-   955 06C5 06 04		mvi	b,4
-   956 06C7 21 6E 20		lxi	h,X206e
-   957 06CA 7E		X06ca:	mov	a,m
-   958 06CB B7			ora	a
-   959 06CC CA E8 06		jz	X06e8
-   960 06CF E5			push	h
-   961 06D0 C5			push	b
-   962 06D1 06 03		mvi	b,3
-   963 06D3 21 6A 20		lxi	h,X206a
-   964 06D6 BE		X06d6:	cmp	m
-   965 06D7 CA DF 06		jz	X06df
-   966 06DA 23			inx	h
-   967 06DB 05			dcr	b
-   968 06DC F2 D6 06		jp	X06d6
-   969 06DF C1		X06df:	pop	b
-   970 06E0 E1			pop	h
-   971 06E1 CA E7 06		jz	X06e7
-   972 06E4 36 00		mvi	m,0
-   973 06E6 0D			dcr	c
-   974 06E7 0C		X06e7:	inr	c
-   975 06E8 23		X06e8:	inx	h
-   976 06E9 05			dcr	b
-   977 06EA C2 CA 06		jnz	X06ca
-   978 06ED 7B			mov	a,e
-   979 06EE E6 08		ani	8
-   980 06F0 C0			rnz
-   981 06F1 B2			ora	d
-   982 06F2 C2 FB 06		jnz	X06fb
-   983 06F5 3E E1		mvi	a,0e1h
-   984 06F7 32 72 20		sta	X2072
-   985 06FA C9			ret
+  1005 06C2 57		X06c2:	mov	d,a
+  1006 06C3 0E 00		mvi	c,0
+  1007 06C5 06 04		mvi	b,4
+  1008 06C7 21 6E 20		lxi	h,X206e
+  1009 06CA 7E		X06ca:	mov	a,m
+  1010 06CB B7			ora	a
+  1011 06CC CA E8 06		jz	X06e8
+  1012 06CF E5			push	h
+  1013 06D0 C5			push	b
+  1014 06D1 06 03		mvi	b,3
+  1015 06D3 21 6A 20		lxi	h,X206a
+  1016 06D6 BE		X06d6:	cmp	m
+  1017 06D7 CA DF 06		jz	X06df
+  1018 06DA 23			inx	h
+  1019 06DB 05			dcr	b
+  1020 06DC F2 D6 06		jp	X06d6
+  1021 06DF C1		X06df:	pop	b
+  1022 06E0 E1			pop	h
+  1023 06E1 CA E7 06		jz	X06e7
+  1024 06E4 36 00		mvi	m,0
+  1025 06E6 0D			dcr	c
+  1026 06E7 0C		X06e7:	inr	c
+  1027 06E8 23		X06e8:	inx	h
+  1028 06E9 05			dcr	b
+  1029 06EA C2 CA 06		jnz	X06ca
+  1030 06ED 7B			mov	a,e
+  1031 06EE E6 08		ani	8
+  1032 06F0 C0			rnz
+  1033 06F1 B2			ora	d
+  1034 06F2 C2 FB 06		jnz	X06fb
+  1035 06F5 3E E1		mvi	a,0e1h
+  1036 06F7 32 72 20		sta	X2072
+  1037 06FA C9			ret
 			
-   987 06FB 21 47 07	X06fb:	lxi	h,X0747
-   988 06FE E5			push	h
-   989 06FF 3A 72 20		lda	X2072
-   990 0702 3C			inr	a
-   991 0703 CA 09 07		jz	X0709
-   992 0706 32 72 20		sta	X2072
-   993 0709 3A A6 21	X0709:	lda	X21a6
-   994 070C E6 40		ani	40h
-   995 070E C8			rz
-   996 070F 7B			mov	a,e
-   997 0710 E6 10		ani	10h
-   998 0712 C0			rnz
-   999 0713 3A 50 21		lda	X2150
-  1000 0716 21 5F 08		lxi	h,X085f
-  1001 0719 06 05		mvi	b,5
-  1002 071B BE		X071b:	cmp	m
-  1003 071C C8			rz
-  1004 071D 23			inx	h
-  1005 071E 05			dcr	b
-  1006 071F C2 1B 07		jnz	X071b
-  1007 0722 21 73 20		lxi	h,X2073
-  1008 0725 35			dcr	m
-  1009 0726 C0			rnz
-  1010 0727 36 02		mvi	m,2
-  1011 0729 3A 72 20		lda	X2072
-  1012 072C FE FF		cpi	0ffh
-  1013 072E C0			rnz
-  1014 072F 79			mov	a,c
-  1015 0730 FE 01		cpi	1
-  1016 0732 C0			rnz
-  1017 0733 06 04		mvi	b,4
-  1018 0735 21 6E 20		lxi	h,X206e
-  1019 0738 7E		X0738:	mov	a,m
-  1020 0739 B7			ora	a
-  1021 073A C2 43 07		jnz	X0743
-  1022 073D 23			inx	h
-  1023 073E 05			dcr	b
-  1024 073F C2 38 07		jnz	X0738
-  1025 0742 C9			ret
+  1039 06FB 21 47 07	X06fb:	lxi	h,X0747
+  1040 06FE E5			push	h
+  1041 06FF 3A 72 20		lda	X2072
+  1042 0702 3C			inr	a
+  1043 0703 CA 09 07		jz	X0709
+  1044 0706 32 72 20		sta	X2072
+  1045 0709 3A A6 21	X0709:	lda	X21a6
+  1046 070C E6 40		ani	40h
+  1047 070E C8			rz
+  1048 070F 7B			mov	a,e
+  1049 0710 E6 10		ani	10h
+  1050 0712 C0			rnz
+  1051 0713 3A 50 21		lda	X2150
+  1052 0716 21 5F 08		lxi	h,X085f
+  1053 0719 06 05		mvi	b,5
+  1054 071B BE		X071b:	cmp	m
+  1055 071C C8			rz
+  1056 071D 23			inx	h
+  1057 071E 05			dcr	b
+  1058 071F C2 1B 07		jnz	X071b
+  1059 0722 21 73 20		lxi	h,X2073
+  1060 0725 35			dcr	m
+  1061 0726 C0			rnz
+  1062 0727 36 02		mvi	m,2
+  1063 0729 3A 72 20		lda	X2072
+  1064 072C FE FF		cpi	0ffh
+  1065 072E C0			rnz
+  1066 072F 79			mov	a,c
+  1067 0730 FE 01		cpi	1
+  1068 0732 C0			rnz
+  1069 0733 06 04		mvi	b,4
+  1070 0735 21 6E 20		lxi	h,X206e
+  1071 0738 7E		X0738:	mov	a,m
+  1072 0739 B7			ora	a
+  1073 073A C2 43 07		jnz	X0743
+  1074 073D 23			inx	h
+  1075 073E 05			dcr	b
+  1076 073F C2 38 07		jnz	X0738
+  1077 0742 C9			ret
 			
-  1027 0743 E1		X0743:	pop	h
-  1028 0744 C3 76 07		jmp	X0776
+  1079 0743 E1		X0743:	pop	h
+  1080 0744 C3 76 07		jmp	X0776
 			
-  1030 0747 79		X0747:	mov	a,c
-  1031 0748 FE 04		cpi	4
-  1032 074A F0			rp
-  1033 074B 01 6A 20		lxi	b,X206a
-  1034 074E 21 6E 20	X074e:	lxi	h,X206e
-  1035 0751 7E		X0751:	mov	a,m
-  1036 0752 B7			ora	a
-  1037 0753 CA 5B 07		jz	X075b
-  1038 0756 0A			ldax	b
-  1039 0757 BE			cmp	m
-  1040 0758 CA 66 07		jz	X0766
-  1041 075B 23		X075b:	inx	h
-  1042 075C 7D			mov	a,l
-  1043 075D FE 72		cpi	72h
-  1044 075F C2 51 07		jnz	X0751
-  1045 0762 0A			ldax	b
-  1046 0763 C3 6C 07		jmp	X076c
+  1082 0747 79		X0747:	mov	a,c
+  1083 0748 FE 04		cpi	4
+  1084 074A F0			rp
+  1085 074B 01 6A 20		lxi	b,X206a
+  1086 074E 21 6E 20	X074e:	lxi	h,X206e
+  1087 0751 7E		X0751:	mov	a,m
+  1088 0752 B7			ora	a
+  1089 0753 CA 5B 07		jz	X075b
+  1090 0756 0A			ldax	b
+  1091 0757 BE			cmp	m
+  1092 0758 CA 66 07		jz	X0766
+  1093 075B 23		X075b:	inx	h
+  1094 075C 7D			mov	a,l
+  1095 075D FE 72		cpi	72h
+  1096 075F C2 51 07		jnz	X0751
+  1097 0762 0A			ldax	b
+  1098 0763 C3 6C 07		jmp	X076c
 			
-  1048 0766 03		X0766:	inx	b
-  1049 0767 15			dcr	d
-  1050 0768 C2 4E 07		jnz	X074e
-  1051 076B C9			ret
+  1100 0766 03		X0766:	inx	b
+  1101 0767 15			dcr	d
+  1102 0768 C2 4E 07		jnz	X074e
+  1103 076B C9			ret
 			
-  1053 076C 47		X076c:	mov	b,a
-  1054 076D 3A 67 20		lda	X2067
-  1055 0770 B8			cmp	b
-  1056 0771 78			mov	a,b
-  1057 0772 32 67 20		sta	X2067
-  1058 0775 C0			rnz
-  1059 0776 E1		X0776:	pop	h
-  1060 0777 32 50 21		sta	X2150
-  1061 077A FE 7B		cpi	7bh
-  1062 077C CA 1A 1A		jz	X1a1a
-  1063 077F FE 6A		cpi	6ah
-  1064 0781 CA 2C 02		jz	X022c
-  1065 0784 43			mov	b,e
-  1066 0785 5F			mov	e,a
-  1067 0786 3A 44 21		lda	X2144
-  1068 0789 B7			ora	a
-  1069 078A C2 41 08		jnz	X0841
-  1070 078D 7B			mov	a,e
-  1071 078E E6 F0		ani	0f0h
-  1072 0790 0F			rrc
-  1073 0791 0F			rrc
-  1074 0792 57			mov	d,a
-  1075 0793 0F			rrc
-  1076 0794 0F			rrc
-  1077 0795 82			add	d
-  1078 0796 57			mov	d,a
-  1079 0797 7B			mov	a,e
-  1080 0798 92			sub	d
-  1081 0799 21 76 04		lxi	h,X0476
-  1082 079C 5F			mov	e,a
-  1083 079D 16 00		mvi	d,0
-  1084 079F 19			dad	d
-  1085 07A0 4E			mov	c,m
-  1086 07A1 79			mov	a,c
-  1087 07A2 B7			ora	a
-  1088 07A3 FA 31 01		jm	X0131
-  1089 07A6 FE 20		cpi	20h
-  1090 07A8 DA FF 07		jc	X07ff
-  1091 07AB 78			mov	a,b
-  1092 07AC E6 70		ani	70h
-  1093 07AE CA FF 07		jz	X07ff
-  1094 07B1 79			mov	a,c
-  1095 07B2 FE 7B		cpi	7bh
-  1096 07B4 D2 C2 07		jnc	X07c2
-  1097 07B7 FE 61		cpi	61h
-  1098 07B9 DA C2 07		jc	X07c2
-  1099 07BC E6 DF		ani	0dfh
-  1100 07BE 4F			mov	c,a
-  1101 07BF C3 D7 07		jmp	X07d7
+  1105 076C 47		X076c:	mov	b,a
+  1106 076D 3A 67 20		lda	X2067
+  1107 0770 B8			cmp	b
+  1108 0771 78			mov	a,b
+  1109 0772 32 67 20		sta	X2067
+  1110 0775 C0			rnz
+  1111 0776 E1		X0776:	pop	h
+  1112 0777 32 50 21		sta	X2150
+  1113 077A FE 7B		cpi	7bh
+  1114 077C CA 1A 1A		jz	X1a1a
+  1115 077F FE 6A		cpi	6ah
+  1116 0781 CA 2C 02		jz	X022c
+  1117 0784 43			mov	b,e
+  1118 0785 5F			mov	e,a
+  1119 0786 3A 44 21		lda	X2144
+  1120 0789 B7			ora	a
+  1121 078A C2 41 08		jnz	X0841
+  1122 078D 7B			mov	a,e
+  1123 078E E6 F0		ani	0f0h
+  1124 0790 0F			rrc
+  1125 0791 0F			rrc
+  1126 0792 57			mov	d,a
+  1127 0793 0F			rrc
+  1128 0794 0F			rrc
+  1129 0795 82			add	d
+  1130 0796 57			mov	d,a
+  1131 0797 7B			mov	a,e
+  1132 0798 92			sub	d
+  1133 0799 21 76 04		lxi	h,X0476
+  1134 079C 5F			mov	e,a
+  1135 079D 16 00		mvi	d,0
+  1136 079F 19			dad	d
+  1137 07A0 4E			mov	c,m
+  1138 07A1 79			mov	a,c
+  1139 07A2 B7			ora	a
+  1140 07A3 FA 31 01		jm	X0131
+  1141 07A6 FE 20		cpi	20h
+  1142 07A8 DA FF 07		jc	X07ff
+  1143 07AB 78			mov	a,b
+  1144 07AC E6 70		ani	70h
+  1145 07AE CA FF 07		jz	X07ff
+  1146 07B1 79			mov	a,c
+  1147 07B2 FE 7B		cpi	7bh
+  1148 07B4 D2 C2 07		jnc	X07c2
+  1149 07B7 FE 61		cpi	61h
+  1150 07B9 DA C2 07		jc	X07c2
+  1151 07BC E6 DF		ani	0dfh
+  1152 07BE 4F			mov	c,a
+  1153 07BF C3 D7 07		jmp	X07d7
 			
-  1103 07C2 78		X07c2:	mov	a,b
-  1104 07C3 E6 30		ani	30h
-  1105 07C5 CA D7 07		jz	X07d7
-  1106 07C8 21 4B 04		lxi	h,X044b
-  1107 07CB 7E		X07cb:	mov	a,m
-  1108 07CC B9			cmp	c
-  1109 07CD CA D5 07		jz	X07d5
-  1110 07D0 23			inx	h
-  1111 07D1 23			inx	h
-  1112 07D2 C3 CB 07		jmp	X07cb
+  1155 07C2 78		X07c2:	mov	a,b
+  1156 07C3 E6 30		ani	30h
+  1157 07C5 CA D7 07		jz	X07d7
+  1158 07C8 21 4B 04		lxi	h,X044b
+  1159 07CB 7E		X07cb:	mov	a,m
+  1160 07CC B9			cmp	c
+  1161 07CD CA D5 07		jz	X07d5
+  1162 07D0 23			inx	h
+  1163 07D1 23			inx	h
+  1164 07D2 C3 CB 07		jmp	X07cb
 			
-  1114 07D5 23		X07d5:	inx	h
-  1115 07D6 4E			mov	c,m
-  1116 07D7 78		X07d7:	mov	a,b
-  1117 07D8 E6 10		ani	10h
-  1118 07DA CA FF 07		jz	X07ff
-  1119 07DD 79			mov	a,c
-  1120 07DE FE 41		cpi	41h
-  1121 07E0 DA E8 07		jc	X07e8
-  1122 07E3 FE 5B		cpi	5bh
-  1123 07E5 DA FC 07		jc	X07fc
-  1124 07E8 FE 3F	X07e8:	cpi	3fh
-  1125 07EA CA FC 07		jz	X07fc
-  1126 07ED FE 20		cpi	20h
-  1127 07EF CA FC 07		jz	X07fc
-  1128 07F2 FE 7B		cpi	7bh
-  1129 07F4 DA 41 08		jc	X0841
-  1130 07F7 FE 7F		cpi	7fh
-  1131 07F9 D2 41 08		jnc	X0841
-  1132 07FC E6 9F	X07fc:	ani	9fh
-  1133 07FE 4F			mov	c,a
-  1134 07FF B1		X07ff:	ora	c
-  1135 0800 F5			push	psw
-  1136 0801 3A A7 21		lda	X21a7
-  1137 0804 E6 80		ani	80h
-  1138 0806 CA 0C 08		jz	X080c
-  1139 0809 32 54 21		sta	X2154
-  1140 080C F1		X080c:	pop	psw
-  1141 080D F6 80	X080d:	ori	80h
-  1142 080F CD 18 0F		call	X0f18
-  1143 0812 CD 53 08	X0812:	call	X0853
-  1144 0815 3A 50 21	X0815:	lda	X2150
-  1145 0818 16 04		mvi	d,4
-  1146 081A 21 6E 20		lxi	h,X206e
-  1147 081D BE		X081d:	cmp	m
-  1148 081E CA 41 08		jz	X0841
-  1149 0821 23			inx	h
-  1150 0822 15			dcr	d
-  1151 0823 C2 1D 08		jnz	X081d
-  1152 0826 16 04		mvi	d,4
-  1153 0828 21 6E 20		lxi	h,X206e
-  1154 082B 7E		X082b:	mov	a,m
-  1155 082C B7			ora	a
-  1156 082D CA 38 08		jz	X0838
-  1157 0830 23			inx	h
-  1158 0831 15			dcr	d
-  1159 0832 C2 2B 08		jnz	X082b
-  1160 0835 C3 41 08		jmp	X0841
+  1166 07D5 23		X07d5:	inx	h
+  1167 07D6 4E			mov	c,m
+  1168 07D7 78		X07d7:	mov	a,b
+  1169 07D8 E6 10		ani	10h
+  1170 07DA CA FF 07		jz	X07ff
+  1171 07DD 79			mov	a,c
+  1172 07DE FE 41		cpi	41h
+  1173 07E0 DA E8 07		jc	X07e8
+  1174 07E3 FE 5B		cpi	5bh
+  1175 07E5 DA FC 07		jc	X07fc
+  1176 07E8 FE 3F	X07e8:	cpi	3fh
+  1177 07EA CA FC 07		jz	X07fc
+  1178 07ED FE 20		cpi	20h
+  1179 07EF CA FC 07		jz	X07fc
+  1180 07F2 FE 7B		cpi	7bh
+  1181 07F4 DA 41 08		jc	X0841
+  1182 07F7 FE 7F		cpi	7fh
+  1183 07F9 D2 41 08		jnc	X0841
+  1184 07FC E6 9F	X07fc:	ani	9fh
+  1185 07FE 4F			mov	c,a
+  1186 07FF B1		X07ff:	ora	c
+  1187 0800 F5			push	psw
+  1188 0801 3A A7 21		lda	X21a7
+  1189 0804 E6 80		ani	80h
+  1190 0806 CA 0C 08		jz	X080c
+  1191 0809 32 54 21		sta	X2154
+  1192 080C F1		X080c:	pop	psw
+  1193 080D F6 80	X080d:	ori	80h
+  1194 080F CD 18 0F		call	X0f18
+  1195 0812 CD 53 08	X0812:	call	X0853
+  1196 0815 3A 50 21	X0815:	lda	X2150
+  1197 0818 16 04		mvi	d,4
+  1198 081A 21 6E 20		lxi	h,X206e
+  1199 081D BE		X081d:	cmp	m
+  1200 081E CA 41 08		jz	X0841
+  1201 0821 23			inx	h
+  1202 0822 15			dcr	d
+  1203 0823 C2 1D 08		jnz	X081d
+  1204 0826 16 04		mvi	d,4
+  1205 0828 21 6E 20		lxi	h,X206e
+  1206 082B 7E		X082b:	mov	a,m
+  1207 082C B7			ora	a
+  1208 082D CA 38 08		jz	X0838
+  1209 0830 23			inx	h
+  1210 0831 15			dcr	d
+  1211 0832 C2 2B 08		jnz	X082b
+  1212 0835 C3 41 08		jmp	X0841
 			
-  1162 0838 3A 50 21	X0838:	lda	X2150
-  1163 083B 77			mov	m,a
-  1164 083C 3E E1		mvi	a,0e1h
-  1165 083E 32 72 20		sta	X2072
-  1166 0841 AF		X0841:	xra	a
-  1167 0842 21 68 20		lxi	h,X2068
-  1168 0845 56			mov	d,m
-  1169 0846 77			mov	m,a
-  1170 0847 23			inx	h
-  1171 0848 72			mov	m,d
-  1172 0849 23			inx	h
-  1173 084A 16 04		mvi	d,4
-  1174 084C 77		X084c:	mov	m,a
-  1175 084D 23			inx	h
-  1176 084E 15			dcr	d
-  1177 084F C2 4C 08		jnz	X084c
-  1178 0852 C9			ret
+  1214 0838 3A 50 21	X0838:	lda	X2150
+  1215 083B 77			mov	m,a
+  1216 083C 3E E1		mvi	a,0e1h
+  1217 083E 32 72 20		sta	X2072
+  1218 0841 AF		X0841:	xra	a
+  1219 0842 21 68 20		lxi	h,X2068
+  1220 0845 56			mov	d,m
+  1221 0846 77			mov	m,a
+  1222 0847 23			inx	h
+  1223 0848 72			mov	m,d
+  1224 0849 23			inx	h
+  1225 084A 16 04		mvi	d,4
+  1226 084C 77		X084c:	mov	m,a
+  1227 084D 23			inx	h
+  1228 084E 15			dcr	d
+  1229 084F C2 4C 08		jnz	X084c
+  1230 0852 C9			ret
 			
-  1180 0853 3A A7 21	X0853:	lda	X21a7
-  1181 0856 E6 40		ani	40h
-  1182 0858 C8			rz
-  1183 0859 3E 80		mvi	a,80h
-  1184 085B 32 47 21		sta	X2147
-  1185 085E C9			ret
+  1232 0853 3A A7 21	X0853:	lda	X21a7
+  1233 0856 E6 40		ani	40h
+  1234 0858 C8			rz
+  1235 0859 3E 80		mvi	a,80h
+  1236 085B 32 47 21		sta	X2147
+  1237 085E C9			ret
 			
-  1187 085F 7B		X085f:	mov	a,e
-  1188 0860 2A 6A 3A		lhld	X3a6a
-  1189 0863 64			mov	h,h
-  1190 0864 3A 30 21		lda	X2130
-  1191 0867 D6 02		sui	2
-  1192 0869 C0			rnz
-  1193 086A 57			mov	d,a
-  1194 086B 3A 31 21		lda	X2131
-  1195 086E 5F			mov	e,a
-  1196 086F 3E 01	X086f:	mvi	a,1
-  1197 0871 A3			ana	e
-  1198 0872 C2 3D 00		jnz	X003d
-  1199 0875 7A		X0875:	mov	a,d
-  1200 0876 B7			ora	a
-  1201 0877 C4 A7 08		cnz	X08a7
-  1202 087A D5			push	d
-  1203 087B CD BE 17		call	X17be
-  1204 087E D1			pop	d
-  1205 087F 3E 02		mvi	a,2
-  1206 0881 A3			ana	e
-  1207 0882 C4 11 1F		cnz	X1f11
-  1208 0885 3E 08		mvi	a,8
-  1209 0887 DC A7 08		cc	X08a7
-  1210 088A 3E 04		mvi	a,4
-  1211 088C A3			ana	e
-  1212 088D C4 62 1F		cnz	X1f62
-  1213 0890 3E 10		mvi	a,10h
-  1214 0892 DC A7 08		cc	X08a7
-  1215 0895 7A			mov	a,d
-  1216 0896 B7			ora	a
-  1217 0897 C2 A0 08		jnz	X08a0
-  1218 089A 3E 08		mvi	a,8
-  1219 089C A3			ana	e
-  1220 089D C2 6F 08		jnz	X086f
-  1221 08A0 7A		X08a0:	mov	a,d
-  1222 08A1 32 00 20		sta	2000h
-  1223 08A4 C3 51 02		jmp	X0251
+  1239 085F 7B		X085f:	mov	a,e
+  1240 0860 2A 6A 3A		lhld	X3a6a
+  1241 0863 64			mov	h,h
+  1242 0864 3A 30 21		lda	X2130
+  1243 0867 D6 02		sui	2
+  1244 0869 C0			rnz
+  1245 086A 57			mov	d,a
+  1246 086B 3A 31 21		lda	X2131
+  1247 086E 5F			mov	e,a
+  1248 086F 3E 01	X086f:	mvi	a,1
+  1249 0871 A3			ana	e
+  1250 0872 C2 3D 00		jnz	X003d
+  1251 0875 7A		X0875:	mov	a,d
+  1252 0876 B7			ora	a
+  1253 0877 C4 A7 08		cnz	X08a7
+  1254 087A D5			push	d
+  1255 087B CD BE 17		call	X17be
+  1256 087E D1			pop	d
+  1257 087F 3E 02		mvi	a,2
+  1258 0881 A3			ana	e
+  1259 0882 C4 11 1F		cnz	X1f11
+  1260 0885 3E 08		mvi	a,8
+  1261 0887 DC A7 08		cc	X08a7
+  1262 088A 3E 04		mvi	a,4
+  1263 088C A3			ana	e
+  1264 088D C4 62 1F		cnz	X1f62
+  1265 0890 3E 10		mvi	a,10h
+  1266 0892 DC A7 08		cc	X08a7
+  1267 0895 7A			mov	a,d
+  1268 0896 B7			ora	a
+  1269 0897 C2 A0 08		jnz	X08a0
+  1270 089A 3E 08		mvi	a,8
+  1271 089C A3			ana	e
+  1272 089D C2 6F 08		jnz	X086f
+  1273 08A0 7A		X08a0:	mov	a,d
+  1274 08A1 32 00 20		sta	2000h
+  1275 08A4 C3 51 02		jmp	X0251
 			
-  1225 08A7 B2		X08a7:	ora	d
-  1226 08A8 57			mov	d,a
-  1227 08A9 3E 08		mvi	a,8
-  1228 08AB A3			ana	e
-  1229 08AC C8			rz
-  1230 08AD 3E 80		mvi	a,80h
-  1231 08AF B2			ora	d
-  1232 08B0 57			mov	d,a
-  1233 08B1 C9			ret
+  1277 08A7 B2		X08a7:	ora	d
+  1278 08A8 57			mov	d,a
+  1279 08A9 3E 08		mvi	a,8
+  1280 08AB A3			ana	e
+  1281 08AC C8			rz
+  1282 08AD 3E 80		mvi	a,80h
+  1283 08AF B2			ora	d
+  1284 08B0 57			mov	d,a
+  1285 08B1 C9			ret
 			
-  1235 08B2 FE 1B	X08b2:	cpi	1bh
-  1236 08B4 CA 9E 09		jz	X099e
-  1237 08B7 FE 10		cpi	10h
-  1238 08B9 DA D4 08		jc	X08d4
-  1239 08BC 5F			mov	e,a
-  1240 08BD D6 18		sui	18h
-  1241 08BF E6 FD		ani	0fdh
-  1242 08C1 C0			rnz
-  1243 08C2 7B			mov	a,e
-  1244 08C3 FE 1A		cpi	1ah
-  1245 08C5 CA CB 08		jz	X08cb
-  1246 08C8 FE 18		cpi	18h
-  1247 08CA C0			rnz
-  1248 08CB CD 15 0A	X08cb:	call	X0a15
-  1249 08CE 3E 02		mvi	a,2
-  1250 08D0 C3 E6 05	X08d0:	jmp	X05e6
+  1287 08B2 FE 1B	X08b2:	cpi	1bh
+  1288 08B4 CA 9E 09		jz	X099e
+  1289 08B7 FE 10		cpi	10h
+  1290 08B9 DA D4 08		jc	X08d4
+  1291 08BC 5F			mov	e,a
+  1292 08BD D6 18		sui	18h
+  1293 08BF E6 FD		ani	0fdh
+  1294 08C1 C0			rnz
+  1295 08C2 7B			mov	a,e
+  1296 08C3 FE 1A		cpi	1ah
+  1297 08C5 CA CB 08		jz	X08cb
+  1298 08C8 FE 18		cpi	18h
+  1299 08CA C0			rnz
+  1300 08CB CD 15 0A	X08cb:	call	X0a15
+  1301 08CE 3E 02		mvi	a,2
+  1302 08D0 C3 E6 05	X08d0:	jmp	X05e6
 			
-  1252 08D3 C9			ret
+  1304 08D3 C9			ret
 			
-  1254 08D4 D6 05	X08d4:	sui	5		;; subtract 5 from A and return if negative
-  1255 08D6 F8			rm
-  1256 08D7 21 E5 08		lxi	h,X08e5		;; load jump table at 8e5
-  1257 08DA 87			add	a		;; double a
-  1258 08DB 5F			mov	e,a
-  1259 08DC 16 00		mvi	d,0
-  1260 08DE 19			dad	d		;; hl = X08e5 + 2A
-  1261 08DF 5E			mov	e,m		;; load DE from (HL) little-endian
-  1262 08E0 23			inx	h
-  1263 08E1 56			mov	d,m
-  1264 08E2 EB			xchg
-  1265 08E3 AF			xra	a		;; zero A
-  1266 08E4 E9			pchl			;; jump to address
+  1306 08D4 D6 05	X08d4:	sui	5		;; subtract 5 from A and return if negative
+  1307 08D6 F8			rm
+  1308 08D7 21 E5 08		lxi	h,X08e5		;; load jump table at 8e5
+  1309 08DA 87			add	a		;; double a
+  1310 08DB 5F			mov	e,a
+  1311 08DC 16 00		mvi	d,0
+  1312 08DE 19			dad	d		;; hl = X08e5 + 2A
+  1313 08DF 5E			mov	e,m		;; load DE from (HL) little-endian
+  1314 08E0 23			inx	h
+  1315 08E1 56			mov	d,m
+  1316 08E2 EB			xchg
+  1317 08E3 AF			xra	a		;; zero A
+  1318 08E4 E9			pchl			;; jump to address
 			
-  1268 08E5		X08e5:	dw	X0900
+  1320 08E5		X08e5:	dw	X0900
             0009 
-  1269 08E7			dw	X0997		;; immediate return
+  1321 08E7			dw	X0997		;; immediate return
             9709 
-  1270 08E9			dw	X0938
+  1322 08E9			dw	X0938
             3809 
-  1271 08EB			dw	X0941
+  1323 08EB			dw	X0941
             4109 
-  1272 08ED			dw	0df9h		;; MYSTERY ADDRESS: this isn't even in AVO!!!
+  1324 08ED			dw	0df9h		;; MYSTERY ADDRESS: this isn't even in AVO!!!
             F90D 
-  1273 08EF			dw	X0955
+  1325 08EF			dw	X0955
             5509 
-  1274 08F1			dw	X0955
+  1326 08F1			dw	X0955
             5509 
-  1275 08F3			dw	X0955
+  1327 08F3			dw	X0955
             5509 
-  1276 08F5			dw	094bh
+  1328 08F5			dw	094bh
             4B09 
-  1277 08F7			dw	X08fb
+  1329 08F7			dw	X08fb
             FB08 
-  1278 08F9			dw	X08fc
+  1330 08F9			dw	X08fc
             FC08 
 			
-  1280 08FB 3C		X08fb:	inr	a
-  1281 08FC 32 FC 20	X08fc:	sta	X20fc
-  1282 08FF C9			ret
+  1332 08FB 3C		X08fb:	inr	a
+  1333 08FC 32 FC 20	X08fc:	sta	X20fc
+  1334 08FF C9			ret
 			
-  1284 0900 3A A5 21	X0900:	lda	X21a5
-  1285 0903 B7			ora	a
-  1286 0904 C0			rnz
-  1287 0905 2A 7B 21		lhld	X217b
-  1288 0908 7C			mov	a,h
-  1289 0909 BD			cmp	l
-  1290 090A C8			rz
-  1291 090B 21 72 21		lxi	h,X2172
-  1292 090E 3E 10		mvi	a,10h
-  1293 0910 B6			ora	m
-  1294 0911 77			mov	m,a
-  1295 0912 C9			ret
+  1336 0900 3A A5 21	X0900:	lda	X21a5
+  1337 0903 B7			ora	a
+  1338 0904 C0			rnz
+  1339 0905 2A 7B 21		lhld	X217b
+  1340 0908 7C			mov	a,h
+  1341 0909 BD			cmp	l
+  1342 090A C8			rz
+  1343 090B 21 72 21		lxi	h,X2172
+  1344 090E 3E 10		mvi	a,10h
+  1345 0910 B6			ora	m
+  1346 0911 77			mov	m,a
+  1347 0912 C9			ret
 			
-  1297 0913 21 72 21		lxi	h,X2172
-  1298 0916 7E			mov	a,m
-  1299 0917 E6 EF		ani	0efh
-  1300 0919 77			mov	m,a
-  1301 091A 21 7B 21		lxi	h,X217b
-  1302 091D 46			mov	b,m
-  1303 091E 23			inx	h
-  1304 091F 0E 14		mvi	c,14h
-  1305 0921 11 5C 21		lxi	d,X215c
-  1306 0924 7E		X0924:	mov	a,m
-  1307 0925 B8			cmp	b
-  1308 0926 CA 30 09		jz	X0930
-  1309 0929 12			stax	d
-  1310 092A 13			inx	d
-  1311 092B 23			inx	h
-  1312 092C 0D			dcr	c
-  1313 092D C2 24 09		jnz	X0924
-  1314 0930 1B		X0930:	dcx	d
-  1315 0931 1A			ldax	d
-  1316 0932 F6 80		ori	80h
-  1317 0934 12			stax	d
-  1318 0935 C3 F3 0E		jmp	X0ef3
+  1349 0913 21 72 21		lxi	h,X2172
+  1350 0916 7E			mov	a,m
+  1351 0917 E6 EF		ani	0efh
+  1352 0919 77			mov	m,a
+  1353 091A 21 7B 21		lxi	h,X217b
+  1354 091D 46			mov	b,m
+  1355 091E 23			inx	h
+  1356 091F 0E 14		mvi	c,14h
+  1357 0921 11 5C 21		lxi	d,X215c
+  1358 0924 7E		X0924:	mov	a,m
+  1359 0925 B8			cmp	b
+  1360 0926 CA 30 09		jz	X0930
+  1361 0929 12			stax	d
+  1362 092A 13			inx	d
+  1363 092B 23			inx	h
+  1364 092C 0D			dcr	c
+  1365 092D C2 24 09		jnz	X0924
+  1366 0930 1B		X0930:	dcx	d
+  1367 0931 1A			ldax	d
+  1368 0932 F6 80		ori	80h
+  1369 0934 12			stax	d
+  1370 0935 C3 F3 0E		jmp	X0ef3
 			
-  1320 0938 21 78 20	X0938:	lxi	h,X2078
-  1321 093B 7E			mov	a,m
-  1322 093C C6 08		adi	8
-  1323 093E D8			rc
-  1324 093F 77			mov	m,a
-  1325 0940 C9			ret
+  1372 0938 21 78 20	X0938:	lxi	h,X2078
+  1373 093B 7E			mov	a,m
+  1374 093C C6 08		adi	8
+  1375 093E D8			rc
+  1376 093F 77			mov	m,a
+  1377 0940 C9			ret
 			
-  1327 0941 21 F8 20	X0941:	lxi	h,X20f8
-  1328 0944 7E			mov	a,m
-  1329 0945 B7			ora	a
-  1330 0946 C8			rz
-  1331 0947 35			dcr	m
-  1332 0948 C3 36 16		jmp	X1636
+  1379 0941 21 F8 20	X0941:	lxi	h,X20f8
+  1380 0944 7E			mov	a,m
+  1381 0945 B7			ora	a
+  1382 0946 C8			rz
+  1383 0947 35			dcr	m
+  1384 0948 C3 36 16		jmp	X1636
 			
-  1334 094B AF		X094b:	xra	a
-  1335 094C 32 F8 20		sta	X20f8
-  1336 094F C3 36 16		jmp	X1636
+  1386 094B AF		X094b:	xra	a
+  1387 094C 32 F8 20		sta	X20f8
+  1388 094F C3 36 16		jmp	X1636
 			
-  1338 0952 CD 4B 09		call	X094b
-  1339 0955 3A A8 21	X0955:	lda	X21a8
-  1340 0958 E6 20		ani	20h
-  1341 095A C4 4B 09		cnz	X094b
-  1342 095D 21 F9 20		lxi	h,X20f9
-  1343 0960 56			mov	d,m
-  1344 0961 3A 56 21		lda	X2156
-  1345 0964 BA			cmp	d
-  1346 0965 CA 73 09		jz	X0973
-  1347 0968 CD BF 11		call	X11bf
-  1348 096B 78			mov	a,b
-  1349 096C BA			cmp	d
-  1350 096D C8			rz
-  1351 096E 14			inr	d
-  1352 096F 72			mov	m,d
-  1353 0970 C3 36 16	X0970:	jmp	X1636
+  1390 0952 CD 4B 09		call	X094b
+  1391 0955 3A A8 21	X0955:	lda	X21a8
+  1392 0958 E6 20		ani	20h
+  1393 095A C4 4B 09		cnz	X094b
+  1394 095D 21 F9 20		lxi	h,X20f9
+  1395 0960 56			mov	d,m
+  1396 0961 3A 56 21		lda	X2156
+  1397 0964 BA			cmp	d
+  1398 0965 CA 73 09		jz	X0973
+  1399 0968 CD BF 11		call	X11bf
+  1400 096B 78			mov	a,b
+  1401 096C BA			cmp	d
+  1402 096D C8			rz
+  1403 096E 14			inr	d
+  1404 096F 72			mov	m,d
+  1405 0970 C3 36 16	X0970:	jmp	X1636
 			
-  1355 0973 3A A6 21	X0973:	lda	X21a6
-  1356 0976 E6 80		ani	80h
-  1357 0978 CA 98 09		jz	X0998
-  1358 097B 0E 01		mvi	c,1
-  1359 097D CD 8E 10		call	X108e
-  1360 0980 3E FF		mvi	a,0ffh
-  1361 0982 32 C3 21		sta	X21c3
-  1362 0985 34			inr	m
-  1363 0986 CD E6 0F		call	X0fe6
-  1364 0989 3A C3 21	X0989:	lda	X21c3
-  1365 098C B7			ora	a
-  1366 098D C2 89 09		jnz	X0989
-  1367 0990 32 F4 20		sta	X20f4
-  1368 0993 3D			dcr	a
-  1369 0994 32 F5 20		sta	X20f5
-  1370 0997 C9		X0997:	ret
+  1407 0973 3A A6 21	X0973:	lda	X21a6
+  1408 0976 E6 80		ani	80h
+  1409 0978 CA 98 09		jz	X0998
+  1410 097B 0E 01		mvi	c,1
+  1411 097D CD 8E 10		call	X108e
+  1412 0980 3E FF		mvi	a,0ffh
+  1413 0982 32 C3 21		sta	X21c3
+  1414 0985 34			inr	m
+  1415 0986 CD E6 0F		call	X0fe6
+  1416 0989 3A C3 21	X0989:	lda	X21c3
+  1417 098C B7			ora	a
+  1418 098D C2 89 09		jnz	X0989
+  1419 0990 32 F4 20		sta	X20f4
+  1420 0993 3D			dcr	a
+  1421 0994 32 F5 20		sta	X20f5
+  1422 0997 C9		X0997:	ret
 			
-  1372 0998 CD 1A 10	X0998:	call	X101a
-  1373 099B C3 12 10		jmp	X1012
+  1424 0998 CD 1A 10	X0998:	call	X101a
+  1425 099B C3 12 10		jmp	X1012
 			
-  1375 099E AF		X099e:	xra	a
-  1376 099F 32 7D 20		sta	X207d
-  1377 09A2 32 B8 21		sta	X21b8
-  1378 09A5 21 AB 09		lxi	h,X09ab
-  1379 09A8 C3 18 0A		jmp	X0a18
+  1427 099E AF		X099e:	xra	a
+  1428 099F 32 7D 20		sta	X207d
+  1429 09A2 32 B8 21		sta	X21b8
+  1430 09A5 21 AB 09		lxi	h,X09ab
+  1431 09A8 C3 18 0A		jmp	X0a18
 			
-  1381 09AB FE 30	X09ab:	cpi	30h
-  1382 09AD D2 BD 09		jnc	X09bd
-  1383 09B0 21 7D 20		lxi	h,X207d
-  1384 09B3 4F			mov	c,a
-  1385 09B4 7E			mov	a,m
-  1386 09B5 B7			ora	a
-  1387 09B6 CA BB 09		jz	X09bb
-  1388 09B9 0E FF		mvi	c,0ffh
-  1389 09BB 71		X09bb:	mov	m,c
-  1390 09BC C9			ret
+  1433 09AB FE 30	X09ab:	cpi	30h
+  1434 09AD D2 BD 09		jnc	X09bd
+  1435 09B0 21 7D 20		lxi	h,X207d
+  1436 09B3 4F			mov	c,a
+  1437 09B4 7E			mov	a,m
+  1438 09B5 B7			ora	a
+  1439 09B6 CA BB 09		jz	X09bb
+  1440 09B9 0E FF		mvi	c,0ffh
+  1441 09BB 71		X09bb:	mov	m,c
+  1442 09BC C9			ret
 			
-  1392 09BD 32 7E 20	X09bd:	sta	X207e
-  1393 09C0 21 15 0A		lxi	h,X0a15
-  1394 09C3 E5			push	h
-  1395 09C4 3A 7D 20		lda	X207d
-  1396 09C7 B7			ora	a
-  1397 09C8 C2 DC 09		jnz	X09dc
-  1398 09CB 3A A7 21		lda	X21a7
-  1399 09CE E6 20		ani	20h
-  1400 09D0 21 50 0A		lxi	h,X0a50
-  1401 09D3 C2 D9 09		jnz	X09d9
-  1402 09D6 21 1C 0A		lxi	h,X0a1c
-  1403 09D9 C3 F7 09	X09d9:	jmp	X09f7
+  1444 09BD 32 7E 20	X09bd:	sta	X207e
+  1445 09C0 21 15 0A		lxi	h,X0a15
+  1446 09C3 E5			push	h
+  1447 09C4 3A 7D 20		lda	X207d
+  1448 09C7 B7			ora	a
+  1449 09C8 C2 DC 09		jnz	X09dc
+  1450 09CB 3A A7 21		lda	X21a7
+  1451 09CE E6 20		ani	20h
+  1452 09D0 21 50 0A		lxi	h,X0a50
+  1453 09D3 C2 D9 09		jnz	X09d9
+  1454 09D6 21 1C 0A		lxi	h,X0a1c
+  1455 09D9 C3 F7 09	X09d9:	jmp	X09f7
 			
-  1405 09DC 47		X09dc:	mov	b,a
-  1406 09DD 3A A7 21		lda	X21a7
-  1407 09E0 E6 20		ani	20h
-  1408 09E2 78			mov	a,b
-  1409 09E3 C8			rz
-  1410 09E4 FE 28		cpi	28h
-  1411 09E6 11 FD 20		lxi	d,X20fd
-  1412 09E9 CA 32 0C		jz	X0c32
-  1413 09EC FE 29		cpi	29h
-  1414 09EE CA 31 0C		jz	X0c31
-  1415 09F1 FE 23		cpi	23h
-  1416 09F3 21 7B 0A		lxi	h,X0a7b
-  1417 09F6 C0			rnz
-  1418 09F7 11 B9 21	X09f7:	lxi	d,X21b9
-  1419 09FA AF			xra	a
-  1420 09FB 12			stax	d
-  1421 09FC 3A 7E 20		lda	X207e
-  1422 09FF 4F		X09ff:	mov	c,a
-  1423 0A00 AF		X0a00:	xra	a
-  1424 0A01 86			add	m
-  1425 0A02 C8			rz
-  1426 0A03 23			inx	h
-  1427 0A04 B9			cmp	c
-  1428 0A05 CA 0D 0A		jz	X0a0d
-  1429 0A08 23			inx	h
-  1430 0A09 23			inx	h
-  1431 0A0A C3 00 0A		jmp	X0a00
+  1457 09DC 47		X09dc:	mov	b,a
+  1458 09DD 3A A7 21		lda	X21a7
+  1459 09E0 E6 20		ani	20h
+  1460 09E2 78			mov	a,b
+  1461 09E3 C8			rz
+  1462 09E4 FE 28		cpi	28h
+  1463 09E6 11 FD 20		lxi	d,X20fd
+  1464 09E9 CA 32 0C		jz	X0c32
+  1465 09EC FE 29		cpi	29h
+  1466 09EE CA 31 0C		jz	X0c31
+  1467 09F1 FE 23		cpi	23h
+  1468 09F3 21 7B 0A		lxi	h,X0a7b
+  1469 09F6 C0			rnz
+  1470 09F7 11 B9 21	X09f7:	lxi	d,X21b9
+  1471 09FA AF			xra	a
+  1472 09FB 12			stax	d
+  1473 09FC 3A 7E 20		lda	X207e
+  1474 09FF 4F		X09ff:	mov	c,a
+  1475 0A00 AF		X0a00:	xra	a
+  1476 0A01 86			add	m
+  1477 0A02 C8			rz
+  1478 0A03 23			inx	h
+  1479 0A04 B9			cmp	c
+  1480 0A05 CA 0D 0A		jz	X0a0d
+  1481 0A08 23			inx	h
+  1482 0A09 23			inx	h
+  1483 0A0A C3 00 0A		jmp	X0a00
 			
-  1433 0A0D 12		X0a0d:	stax	d
-  1434 0A0E 7E			mov	a,m
-  1435 0A0F 23			inx	h
-  1436 0A10 66			mov	h,m
-  1437 0A11 6F			mov	l,a
-  1438 0A12 AF			xra	a
-  1439 0A13 E9			pchl
+  1485 0A0D 12		X0a0d:	stax	d
+  1486 0A0E 7E			mov	a,m
+  1487 0A0F 23			inx	h
+  1488 0A10 66			mov	h,m
+  1489 0A11 6F			mov	l,a
+  1490 0A12 AF			xra	a
+  1491 0A13 E9			pchl
 			
-  1441 0A14 E1		X0a14:	pop	h
-  1442 0A15 21 E6 05	X0a15:	lxi	h,X05e6		;; HL = 0x05e6
-  1443 0A18 22 40 21	X0a18:	shld	X2140		;; 0x2140 = 0xe605
-  1444 0A1B C9			ret
+  1493 0A14 E1		X0a14:	pop	h
+  1494 0A15 21 E6 05	X0a15:	lxi	h,X05e6		;; HL = 0x05e6
+  1495 0A18 22 40 21	X0a18:	shld	X2140		;; 0x2140 = 0xe605
+  1496 0A1B C9			ret
 			;;
 			;;  This is a table of some sort.
 			;;
-  1448 0A1C 41		X0a1c:	mov	b,c
-  1449 0A1D 9B			sbb	e
-  1450 0A1E 0A			ldax	b
-  1451 0A1F 42			mov	b,d
-  1452 0A20 9B			sbb	e
-  1453 0A21 0A			ldax	b
-  1454 0A22 43			mov	b,e
-  1455 0A23 9B			sbb	e
-  1456 0A24 0A			ldax	b
-  1457 0A25 44			mov	b,h
-  1458 0A26 9B			sbb	e
-  1459 0A27 0A			ldax	b
-  1460 0A28 46			mov	b,m
-  1461 0A29 0A			ldax	b
-  1462 0A2A 0C			inr	c
-  1463 0A2B 47			mov	b,a
-  1464 0A2C 0F			rrc
-  1465 0A2D 0C			inr	c
-  1466 0A2E 48			mov	c,b
-  1467 0A2F 96			sub	m
-  1468 0A30 0A			ldax	b
-  1469 0A31 49			mov	c,c
-  1470 0A32 A3			ana	e
-  1471 0A33 0B			dcx	b
-  1472 0A34 4A			mov	c,d
-  1473 0A35 9B			sbb	e
-  1474 0A36 0A			ldax	b
-  1475 0A37 4B			mov	c,e
-  1476 0A38 9B			sbb	e
-  1477 0A39 0A			ldax	b
-  1478 0A3A 59			mov	e,c
-  1479 0A3B 11 0B 5A		lxi	d,X5a0b
-  1480 0A3E C6 0C		adi	0ch
-  1481 0A40 3D			dcr	a
-  1482 0A41 DF			rst	3
-  1483 0A42 0B			dcx	b
-  1484 0A43 3E E5		mvi	a,0e5h
-  1485 0A45 0B			dcx	b
-  1486 0A46 31 57 0C		lxi	sp,X0c57
-  1487 0A49 3C			inr	a
-  1488 0A4A EB			xchg
-  1489 0A4B 0B			dcx	b
-  1490 0A4C 5D			mov	e,l
-  1491 0A4D 60			mov	h,b
-  1492 0A4E 0D			dcr	c
-  1493 0A4F 00			nop
-  1494 0A50 63		X0a50:	mov	h,e
-  1495 0A51 00			nop
-  1496 0A52 00			nop
-  1497 0A53 45			mov	b,l
-  1498 0A54 52			mov	d,d
-  1499 0A55 09			dad	b
-  1500 0A56 4D			mov	c,l
-  1501 0A57 A3			ana	e
-  1502 0A58 0B			dcx	b
-  1503 0A59 31 57 0C		lxi	sp,X0c57
-  1504 0A5C 5B			mov	e,e
-  1505 0A5D 8E			adc	m
-  1506 0A5E 0A			ldax	b
-  1507 0A5F 48			mov	c,b
-  1508 0A60 DF			rst	3
-  1509 0A61 0D			dcr	c
-  1510 0A62 44			mov	b,h
-  1511 0A63 55			mov	d,l
-  1512 0A64 09			dad	b
-  1513 0A65 37			stc
-  1514 0A66 68			mov	l,b
-  1515 0A67 0C			inr	c
-  1516 0A68			db	38h
+  1500 0A1C 41		X0a1c:	mov	b,c
+  1501 0A1D 9B			sbb	e
+  1502 0A1E 0A			ldax	b
+  1503 0A1F 42			mov	b,d
+  1504 0A20 9B			sbb	e
+  1505 0A21 0A			ldax	b
+  1506 0A22 43			mov	b,e
+  1507 0A23 9B			sbb	e
+  1508 0A24 0A			ldax	b
+  1509 0A25 44			mov	b,h
+  1510 0A26 9B			sbb	e
+  1511 0A27 0A			ldax	b
+  1512 0A28 46			mov	b,m
+  1513 0A29 0A			ldax	b
+  1514 0A2A 0C			inr	c
+  1515 0A2B 47			mov	b,a
+  1516 0A2C 0F			rrc
+  1517 0A2D 0C			inr	c
+  1518 0A2E 48			mov	c,b
+  1519 0A2F 96			sub	m
+  1520 0A30 0A			ldax	b
+  1521 0A31 49			mov	c,c
+  1522 0A32 A3			ana	e
+  1523 0A33 0B			dcx	b
+  1524 0A34 4A			mov	c,d
+  1525 0A35 9B			sbb	e
+  1526 0A36 0A			ldax	b
+  1527 0A37 4B			mov	c,e
+  1528 0A38 9B			sbb	e
+  1529 0A39 0A			ldax	b
+  1530 0A3A 59			mov	e,c
+  1531 0A3B 11 0B 5A		lxi	d,X5a0b
+  1532 0A3E C6 0C		adi	0ch
+  1533 0A40 3D			dcr	a
+  1534 0A41 DF			rst	3
+  1535 0A42 0B			dcx	b
+  1536 0A43 3E E5		mvi	a,0e5h
+  1537 0A45 0B			dcx	b
+  1538 0A46 31 57 0C		lxi	sp,X0c57
+  1539 0A49 3C			inr	a
+  1540 0A4A EB			xchg
+  1541 0A4B 0B			dcx	b
+  1542 0A4C 5D			mov	e,l
+  1543 0A4D 60			mov	h,b
+  1544 0A4E 0D			dcr	c
+  1545 0A4F 00			nop
+  1546 0A50 63		X0a50:	mov	h,e
+  1547 0A51 00			nop
+  1548 0A52 00			nop
+  1549 0A53 45			mov	b,l
+  1550 0A54 52			mov	d,d
+  1551 0A55 09			dad	b
+  1552 0A56 4D			mov	c,l
+  1553 0A57 A3			ana	e
+  1554 0A58 0B			dcx	b
+  1555 0A59 31 57 0C		lxi	sp,X0c57
+  1556 0A5C 5B			mov	e,e
+  1557 0A5D 8E			adc	m
+  1558 0A5E 0A			ldax	b
+  1559 0A5F 48			mov	c,b
+  1560 0A60 DF			rst	3
+  1561 0A61 0D			dcr	c
+  1562 0A62 44			mov	b,h
+  1563 0A63 55			mov	d,l
+  1564 0A64 09			dad	b
+  1565 0A65 37			stc
+  1566 0A66 68			mov	l,b
+  1567 0A67 0C			inr	c
+  1568 0A68			db	38h
             38 
-  1517 0A69 71			mov	m,c
-  1518 0A6A 0C			inr	c
-  1519 0A6B 3D			dcr	a
-  1520 0A6C DF			rst	3
-  1521 0A6D 0B			dcx	b
-  1522 0A6E 3E E5		mvi	a,0e5h
-  1523 0A70 0B			dcx	b
-  1524 0A71 5A			mov	e,d
-  1525 0A72 C6 0C		adi	0ch
-  1526 0A74 4E			mov	c,m
-  1527 0A75 46			mov	b,m
-  1528 0A76 0C			inr	c
-  1529 0A77 4F			mov	c,a
-  1530 0A78 46			mov	b,m
-  1531 0A79 0C			inr	c
-  1532 0A7A 00			nop
-  1533 0A7B 33		X0a7b:	inx	sp
-  1534 0A7C A8			xra	b
-  1535 0A7D 12			stax	d
-  1536 0A7E 34			inr	m
-  1537 0A7F AC			xra	h
-  1538 0A80 12			stax	d
-  1539 0A81 35			dcr	m
-  1540 0A82 4A			mov	c,d
-  1541 0A83 13			inx	d
-  1542 0A84 36 A4		mvi	m,0a4h
-  1543 0A86 12			stax	d
-  1544 0A87 37			stc
-  1545 0A88 60			mov	h,b
-  1546 0A89 0D			dcr	c
-  1547 0A8A			db	38h
+  1569 0A69 71			mov	m,c
+  1570 0A6A 0C			inr	c
+  1571 0A6B 3D			dcr	a
+  1572 0A6C DF			rst	3
+  1573 0A6D 0B			dcx	b
+  1574 0A6E 3E E5		mvi	a,0e5h
+  1575 0A70 0B			dcx	b
+  1576 0A71 5A			mov	e,d
+  1577 0A72 C6 0C		adi	0ch
+  1578 0A74 4E			mov	c,m
+  1579 0A75 46			mov	b,m
+  1580 0A76 0C			inr	c
+  1581 0A77 4F			mov	c,a
+  1582 0A78 46			mov	b,m
+  1583 0A79 0C			inr	c
+  1584 0A7A 00			nop
+  1585 0A7B 33		X0a7b:	inx	sp
+  1586 0A7C A8			xra	b
+  1587 0A7D 12			stax	d
+  1588 0A7E 34			inr	m
+  1589 0A7F AC			xra	h
+  1590 0A80 12			stax	d
+  1591 0A81 35			dcr	m
+  1592 0A82 4A			mov	c,d
+  1593 0A83 13			inx	d
+  1594 0A84 36 A4		mvi	m,0a4h
+  1595 0A86 12			stax	d
+  1596 0A87 37			stc
+  1597 0A88 60			mov	h,b
+  1598 0A89 0D			dcr	c
+  1599 0A8A			db	38h
             38 
-  1548 0A8B A7			ana	a
-  1549 0A8C 0D			dcr	c
-  1550 0A8D 00			nop
-  1551 0A8E 21 C2 16		lxi	h,X16c2
-  1552 0A91 22 40 21		shld	X2140
-  1553 0A94 E1			pop	h
-  1554 0A95 C9			ret
+  1600 0A8B A7			ana	a
+  1601 0A8C 0D			dcr	c
+  1602 0A8D 00			nop
+  1603 0A8E 21 C2 16		lxi	h,X16c2
+  1604 0A91 22 40 21		shld	X2140
+  1605 0A94 E1			pop	h
+  1606 0A95 C9			ret
 			
-  1556 0A96 3E 48		mvi	a,48h
-  1557 0A98 32 7E 20		sta	X207e
-  1558 0A9B 21 00 00		lxi	h,X0000
-  1559 0A9E 22 30 21		shld	X2130
-  1560 0AA1 E1			pop	h
-  1561 0AA2 21 15 0A	X0aa2:	lxi	h,X0a15
-  1562 0AA5 E5			push	h
-  1563 0AA6 3A 7D 20		lda	X207d
-  1564 0AA9 B7			ora	a
-  1565 0AAA C0			rnz
-  1566 0AAB 21 D9 0A		lxi	h,X0ad9
-  1567 0AAE CD F7 09		call	X09f7
-  1568 0AB1 3A B9 21		lda	X21b9
-  1569 0AB4 B7			ora	a
-  1570 0AB5 C0			rnz
-  1571 0AB6 21 30 21		lxi	h,X2130
-  1572 0AB9 3A 4B 21		lda	X214b
-  1573 0ABC B7			ora	a
-  1574 0ABD 5F			mov	e,a
-  1575 0ABE C2 C2 0A		jnz	X0ac2
-  1576 0AC1 1C			inr	e
-  1577 0AC2 7E		X0ac2:	mov	a,m
-  1578 0AC3 E5			push	h
-  1579 0AC4 D5			push	d
-  1580 0AC5 21 F5 0A		lxi	h,X0af5
-  1581 0AC8 47			mov	b,a
-  1582 0AC9 CD F7 09		call	X09f7
-  1583 0ACC D1			pop	d
-  1584 0ACD E1			pop	h
-  1585 0ACE 3A B9 21		lda	X21b9
-  1586 0AD1 B7			ora	a
-  1587 0AD2 C8			rz
-  1588 0AD3 23			inx	h
-  1589 0AD4 1D			dcr	e
-  1590 0AD5 C2 C2 0A		jnz	X0ac2
-  1591 0AD8 C9			ret
+  1608 0A96 3E 48		mvi	a,48h
+  1609 0A98 32 7E 20		sta	X207e
+  1610 0A9B 21 00 00		lxi	h,0
+  1611 0A9E 22 30 21		shld	X2130
+  1612 0AA1 E1			pop	h
+  1613 0AA2 21 15 0A	X0aa2:	lxi	h,X0a15
+  1614 0AA5 E5			push	h
+  1615 0AA6 3A 7D 20		lda	X207d
+  1616 0AA9 B7			ora	a
+  1617 0AAA C0			rnz
+  1618 0AAB 21 D9 0A		lxi	h,X0ad9
+  1619 0AAE CD F7 09		call	X09f7
+  1620 0AB1 3A B9 21		lda	X21b9
+  1621 0AB4 B7			ora	a
+  1622 0AB5 C0			rnz
+  1623 0AB6 21 30 21		lxi	h,X2130
+  1624 0AB9 3A 4B 21		lda	X214b
+  1625 0ABC B7			ora	a
+  1626 0ABD 5F			mov	e,a
+  1627 0ABE C2 C2 0A		jnz	X0ac2
+  1628 0AC1 1C			inr	e
+  1629 0AC2 7E		X0ac2:	mov	a,m
+  1630 0AC3 E5			push	h
+  1631 0AC4 D5			push	d
+  1632 0AC5 21 F5 0A		lxi	h,X0af5
+  1633 0AC8 47			mov	b,a
+  1634 0AC9 CD F7 09		call	X09f7
+  1635 0ACC D1			pop	d
+  1636 0ACD E1			pop	h
+  1637 0ACE 3A B9 21		lda	X21b9
+  1638 0AD1 B7			ora	a
+  1639 0AD2 C8			rz
+  1640 0AD3 23			inx	h
+  1641 0AD4 1D			dcr	e
+  1642 0AD5 C2 C2 0A		jnz	X0ac2
+  1643 0AD8 C9			ret
 			
-  1593 0AD9 44		X0ad9:	mov	b,h
-  1594 0ADA 1E 18		mvi	e,18h
-  1595 0ADC 42			mov	b,d
-  1596 0ADD 07			rlc
-  1597 0ADE			db	18h
+  1645 0AD9 44		X0ad9:	mov	b,h
+  1646 0ADA 1E 18		mvi	e,18h
+  1647 0ADC 42			mov	b,d
+  1648 0ADD 07			rlc
+  1649 0ADE			db	18h
             18 
-  1598 0ADF 43			mov	b,e
-  1599 0AE0 15			dcr	d
-  1600 0AE1			db	18h
+  1650 0ADF 43			mov	b,e
+  1651 0AE0 15			dcr	d
+  1652 0AE1			db	18h
             18 
-  1601 0AE2 48			mov	c,b
-  1602 0AE3 53			mov	d,e
-  1603 0AE4			db	18h
+  1653 0AE2 48			mov	c,b
+  1654 0AE3 53			mov	d,e
+  1655 0AE4			db	18h
             18 
-  1604 0AE5 41			mov	b,c
-  1605 0AE6 FE 17		cpi	17h
-  1606 0AE8 72			mov	m,d
-  1607 0AE9 A6			ana	m
-  1608 0AEA 15			dcr	d
-  1609 0AEB 66			mov	h,m
-  1610 0AEC 53			mov	d,e
-  1611 0AED			db	18h
+  1656 0AE5 41			mov	b,c
+  1657 0AE6 FE 17		cpi	17h
+  1658 0AE8 72			mov	m,d
+  1659 0AE9 A6			ana	m
+  1660 0AEA 15			dcr	d
+  1661 0AEB 66			mov	h,m
+  1662 0AEC 53			mov	d,e
+  1663 0AED			db	18h
             18 
-  1612 0AEE 78			mov	a,b
-  1613 0AEF DF			rst	3
-  1614 0AF0 12			stax	d
-  1615 0AF1 79			mov	a,c
-  1616 0AF2 64			mov	h,h
-  1617 0AF3			db	8
+  1664 0AEE 78			mov	a,b
+  1665 0AEF DF			rst	3
+  1666 0AF0 12			stax	d
+  1667 0AF1 79			mov	a,c
+  1668 0AF2 64			mov	h,h
+  1669 0AF3			db	8
             08 
-  1618 0AF4 00			nop
-  1619 0AF5 63		X0af5:	mov	h,e
-  1620 0AF6 C1			pop	b
-  1621 0AF7 0C			inr	c
-  1622 0AF8 71			mov	m,c
-  1623 0AF9 16 0C		mvi	d,0ch
-  1624 0AFB 6E			mov	l,m
-  1625 0AFC 03			inx	b
-  1626 0AFD 0D			dcr	c
-  1627 0AFE 4A			mov	c,d
-  1628 0AFF 41			mov	b,c
-  1629 0B00 15			dcr	d
-  1630 0B01 4B			mov	c,e
-  1631 0B02 FC 14 6C		cm	X6c14
-  1632 0B05			db	0edh
+  1670 0AF4 00			nop
+  1671 0AF5 63		X0af5:	mov	h,e
+  1672 0AF6 C1			pop	b
+  1673 0AF7 0C			inr	c
+  1674 0AF8 71			mov	m,c
+  1675 0AF9 16 0C		mvi	d,0ch
+  1676 0AFB 6E			mov	l,m
+  1677 0AFC 03			inx	b
+  1678 0AFD 0D			dcr	c
+  1679 0AFE 4A			mov	c,d
+  1680 0AFF 41			mov	b,c
+  1681 0B00 15			dcr	d
+  1682 0B01 4B			mov	c,e
+  1683 0B02 FC 14 6C		cm	X6c14
+  1684 0B05			db	0edh
             ED 
-  1633 0B06 13			inx	d
-  1634 0B07 6D			mov	l,l
-  1635 0B08 7F			mov	a,a
-  1636 0B09 0C			inr	c
-  1637 0B0A 68			mov	l,b
-  1638 0B0B F2 13 67		jp	X6713
-  1639 0B0E CF			rst	1
-  1640 0B0F 0D			dcr	c
-  1641 0B10 00			nop
-  1642 0B11 21 19 0B		lxi	h,X0b19
-  1643 0B14 22 40 21		shld	X2140
-  1644 0B17 E1			pop	h
-  1645 0B18 C9			ret
+  1685 0B06 13			inx	d
+  1686 0B07 6D			mov	l,l
+  1687 0B08 7F			mov	a,a
+  1688 0B09 0C			inr	c
+  1689 0B0A 68			mov	l,b
+  1690 0B0B F2 13 67		jp	X6713
+  1691 0B0E CF			rst	1
+  1692 0B0F 0D			dcr	c
+  1693 0B10 00			nop
+  1694 0B11 21 19 0B		lxi	h,X0b19
+  1695 0B14 22 40 21		shld	X2140
+  1696 0B17 E1			pop	h
+  1697 0B18 C9			ret
 			
-  1647 0B19 47		X0b19:	mov	b,a
-  1648 0B1A FE 20		cpi	20h
-  1649 0B1C DA B2 08		jc	X08b2
-  1650 0B1F FE 1B		cpi	1bh
-  1651 0B21 21 51 21		lxi	h,X2151
-  1652 0B24 C2 2E 0B		jnz	X0b2e
-  1653 0B27 21 AB 09		lxi	h,X09ab
-  1654 0B2A 22 40 21		shld	X2140
-  1655 0B2D C9			ret
+  1699 0B19 47		X0b19:	mov	b,a
+  1700 0B1A FE 20		cpi	20h
+  1701 0B1C DA B2 08		jc	X08b2
+  1702 0B1F FE 1B		cpi	1bh
+  1703 0B21 21 51 21		lxi	h,X2151
+  1704 0B24 C2 2E 0B		jnz	X0b2e
+  1705 0B27 21 AB 09		lxi	h,X09ab
+  1706 0B2A 22 40 21		shld	X2140
+  1707 0B2D C9			ret
 			
-  1657 0B2E 7E		X0b2e:	mov	a,m
-  1658 0B2F B7			ora	a
-  1659 0B30 C2 42 0B		jnz	X0b42
-  1660 0B33 36 01		mvi	m,1
-  1661 0B35 78			mov	a,b
-  1662 0B36 D6 20		sui	20h
-  1663 0B38 32 52 21		sta	X2152
-  1664 0B3B 21 19 0B		lxi	h,X0b19
-  1665 0B3E 22 40 21		shld	X2140
-  1666 0B41 C9			ret
+  1709 0B2E 7E		X0b2e:	mov	a,m
+  1710 0B2F B7			ora	a
+  1711 0B30 C2 42 0B		jnz	X0b42
+  1712 0B33 36 01		mvi	m,1
+  1713 0B35 78			mov	a,b
+  1714 0B36 D6 20		sui	20h
+  1715 0B38 32 52 21		sta	X2152
+  1716 0B3B 21 19 0B		lxi	h,X0b19
+  1717 0B3E 22 40 21		shld	X2140
+  1718 0B41 C9			ret
 			
-  1668 0B42 36 00	X0b42:	mvi	m,0
-  1669 0B44 78			mov	a,b
-  1670 0B45 D6 20		sui	20h
-  1671 0B47 FE 50		cpi	50h
-  1672 0B49 D2 4F 0B		jnc	X0b4f
-  1673 0B4C 32 F8 20		sta	X20f8
-  1674 0B4F CD BF 11	X0b4f:	call	X11bf
-  1675 0B52 3A 52 21		lda	X2152
-  1676 0B55 04			inr	b
-  1677 0B56 B8			cmp	b
-  1678 0B57 D2 5D 0B		jnc	X0b5d
-  1679 0B5A 32 F9 20		sta	X20f9
-  1680 0B5D CD 15 0A	X0b5d:	call	X0a15
-  1681 0B60 C3 36 16		jmp	X1636
+  1720 0B42 36 00	X0b42:	mvi	m,0
+  1721 0B44 78			mov	a,b
+  1722 0B45 D6 20		sui	20h
+  1723 0B47 FE 50		cpi	50h
+  1724 0B49 D2 4F 0B		jnc	X0b4f
+  1725 0B4C 32 F8 20		sta	X20f8
+  1726 0B4F CD BF 11	X0b4f:	call	X11bf
+  1727 0B52 3A 52 21		lda	X2152
+  1728 0B55 04			inr	b
+  1729 0B56 B8			cmp	b
+  1730 0B57 D2 5D 0B		jnc	X0b5d
+  1731 0B5A 32 F9 20		sta	X20f9
+  1732 0B5D CD 15 0A	X0b5d:	call	X0a15
+  1733 0B60 C3 36 16		jmp	X1636
 			
-  1683 0B63 AF		X0b63:	xra	a
-  1684 0B64 32 A2 21		sta	X21a2
-  1685 0B67 CD AD 10		call	X10ad
-  1686 0B6A 0E 50		mvi	c,50h
-  1687 0B6C CD F9 10		call	X10f9
-  1688 0B6F CD 4C 11		call	X114c
-  1689 0B72 0E 50		mvi	c,50h
-  1690 0B74 C3 89 0B		jmp	X0b89
+  1735 0B63 AF		X0b63:	xra	a
+  1736 0B64 32 A2 21		sta	X21a2
+  1737 0B67 CD AD 10		call	X10ad
+  1738 0B6A 0E 50		mvi	c,50h
+  1739 0B6C CD F9 10		call	X10f9
+  1740 0B6F CD 4C 11		call	X114c
+  1741 0B72 0E 50		mvi	c,50h
+  1742 0B74 C3 89 0B		jmp	X0b89
 			
-  1692 0B77 3E 01	X0b77:	mvi	a,1
-  1693 0B79 32 A2 21		sta	X21a2
-  1694 0B7C CD AD 10		call	X10ad
-  1695 0B7F 0E 84		mvi	c,84h
-  1696 0B81 CD F9 10		call	X10f9
-  1697 0B84 CD 4C 11		call	X114c
-  1698 0B87 0E 84		mvi	c,84h
-  1699 0B89 AF		X0b89:	xra	a
-  1700 0B8A 32 55 21		sta	X2155
-  1701 0B8D CD BF 11		call	X11bf
-  1702 0B90 78			mov	a,b
-  1703 0B91 32 56 21		sta	X2156
-  1704 0B94 79			mov	a,c
-  1705 0B95 32 50 20		sta	X2050
-  1706 0B98 CD 42 03		call	X0342
-  1707 0B9B CD 48 18		call	X1848
-  1708 0B9E 3E 01		mvi	a,1
-  1709 0BA0 C3 AA 0F		jmp	X0faa
+  1744 0B77 3E 01	X0b77:	mvi	a,1
+  1745 0B79 32 A2 21		sta	X21a2
+  1746 0B7C CD AD 10		call	X10ad
+  1747 0B7F 0E 84		mvi	c,84h
+  1748 0B81 CD F9 10		call	X10f9
+  1749 0B84 CD 4C 11		call	X114c
+  1750 0B87 0E 84		mvi	c,84h
+  1751 0B89 AF		X0b89:	xra	a
+  1752 0B8A 32 55 21		sta	X2155
+  1753 0B8D CD BF 11		call	X11bf
+  1754 0B90 78			mov	a,b
+  1755 0B91 32 56 21		sta	X2156
+  1756 0B94 79			mov	a,c
+  1757 0B95 32 50 20		sta	X2050
+  1758 0B98 CD 42 03		call	X0342
+  1759 0B9B CD 48 18		call	X1848
+  1760 0B9E 3E 01		mvi	a,1
+  1761 0BA0 C3 AA 0F		jmp	X0faa
 			
-  1711 0BA3 21 F9 20		lxi	h,X20f9
-  1712 0BA6 3A 55 21		lda	X2155
-  1713 0BA9 47			mov	b,a
-  1714 0BAA 7E			mov	a,m
-  1715 0BAB B8			cmp	b
-  1716 0BAC CA B8 0B		jz	X0bb8
-  1717 0BAF B7			ora	a
-  1718 0BB0 C8			rz
-  1719 0BB1 21 F9 20		lxi	h,X20f9
-  1720 0BB4 35			dcr	m
-  1721 0BB5 C3 36 16		jmp	X1636
+  1763 0BA3 21 F9 20		lxi	h,X20f9
+  1764 0BA6 3A 55 21		lda	X2155
+  1765 0BA9 47			mov	b,a
+  1766 0BAA 7E			mov	a,m
+  1767 0BAB B8			cmp	b
+  1768 0BAC CA B8 0B		jz	X0bb8
+  1769 0BAF B7			ora	a
+  1770 0BB0 C8			rz
+  1771 0BB1 21 F9 20		lxi	h,X20f9
+  1772 0BB4 35			dcr	m
+  1773 0BB5 C3 36 16		jmp	X1636
 			
-  1723 0BB8 3A A6 21	X0bb8:	lda	X21a6
-  1724 0BBB E6 80		ani	80h
-  1725 0BBD CA D9 0B		jz	X0bd9
-  1726 0BC0 0E 01		mvi	c,1
-  1727 0BC2 CD 8E 10		call	X108e
-  1728 0BC5 3E FF		mvi	a,0ffh
-  1729 0BC7 32 C3 21		sta	X21c3
-  1730 0BCA 35			dcr	m
-  1731 0BCB CD EB 0F		call	X0feb
-  1732 0BCE 3A C3 21	X0bce:	lda	X21c3
-  1733 0BD1 B7			ora	a
-  1734 0BD2 C2 CE 0B		jnz	X0bce
-  1735 0BD5 32 F4 20		sta	X20f4
-  1736 0BD8 C9			ret
+  1775 0BB8 3A A6 21	X0bb8:	lda	X21a6
+  1776 0BBB E6 80		ani	80h
+  1777 0BBD CA D9 0B		jz	X0bd9
+  1778 0BC0 0E 01		mvi	c,1
+  1779 0BC2 CD 8E 10		call	X108e
+  1780 0BC5 3E FF		mvi	a,0ffh
+  1781 0BC7 32 C3 21		sta	X21c3
+  1782 0BCA 35			dcr	m
+  1783 0BCB CD EB 0F		call	X0feb
+  1784 0BCE 3A C3 21	X0bce:	lda	X21c3
+  1785 0BD1 B7			ora	a
+  1786 0BD2 C2 CE 0B		jnz	X0bce
+  1787 0BD5 32 F4 20		sta	X20f4
+  1788 0BD8 C9			ret
 			
-  1738 0BD9 CD 2D 10	X0bd9:	call	X102d
-  1739 0BDC C3 12 10		jmp	X1012
+  1790 0BD9 CD 2D 10	X0bd9:	call	X102d
+  1791 0BDC C3 12 10		jmp	X1012
 			
-  1741 0BDF 21 78 21		lxi	h,X2178
-  1742 0BE2 36 01		mvi	m,1
-  1743 0BE4 C9			ret
+  1793 0BDF 21 78 21		lxi	h,X2178
+  1794 0BE2 36 01		mvi	m,1
+  1795 0BE4 C9			ret
 			
-  1745 0BE5 21 78 21		lxi	h,X2178
-  1746 0BE8 36 00		mvi	m,0
-  1747 0BEA C9			ret
+  1797 0BE5 21 78 21		lxi	h,X2178
+  1798 0BE8 36 00		mvi	m,0
+  1799 0BEA C9			ret
 			
-  1749 0BEB 21 A7 21		lxi	h,X21a7
-  1750 0BEE 7E			mov	a,m
-  1751 0BEF F6 20		ori	20h
-  1752 0BF1 77			mov	m,a
-  1753 0BF2 3A A8 21	X0bf2:	lda	X21a8
-  1754 0BF5 E6 80		ani	80h
-  1755 0BF7 26 08		mvi	h,8
-  1756 0BF9 CA FE 0B		jz	X0bfe
-  1757 0BFC 26 48		mvi	h,48h
-  1758 0BFE 6C		X0bfe:	mov	l,h
-  1759 0BFF 22 FD 20		shld	X20fd
-  1760 0C02 22 FF 20		shld	X20ff
-  1761 0C05 AF			xra	a
-  1762 0C06 32 FC 20		sta	X20fc
-  1763 0C09 C9			ret
+  1801 0BEB 21 A7 21		lxi	h,X21a7
+  1802 0BEE 7E			mov	a,m
+  1803 0BEF F6 20		ori	20h
+  1804 0BF1 77			mov	m,a
+  1805 0BF2 3A A8 21	X0bf2:	lda	X21a8
+  1806 0BF5 E6 80		ani	80h
+  1807 0BF7 26 08		mvi	h,8
+  1808 0BF9 CA FE 0B		jz	X0bfe
+  1809 0BFC 26 48		mvi	h,48h
+  1810 0BFE 6C		X0bfe:	mov	l,h
+  1811 0BFF 22 FD 20		shld	X20fd
+  1812 0C02 22 FF 20		shld	X20ff
+  1813 0C05 AF			xra	a
+  1814 0C06 32 FC 20		sta	X20fc
+  1815 0C09 C9			ret
 			
-  1765 0C0A 26 88		mvi	h,88h
-  1766 0C0C C3 11 0C		jmp	X0c11
+  1817 0C0A 26 88		mvi	h,88h
+  1818 0C0C C3 11 0C		jmp	X0c11
 			
-  1768 0C0F 26 08		mvi	h,8
-  1769 0C11 6C		X0c11:	mov	l,h
-  1770 0C12 22 FD 20		shld	X20fd
-  1771 0C15 C9			ret
+  1820 0C0F 26 08		mvi	h,8
+  1821 0C11 6C		X0c11:	mov	l,h
+  1822 0C12 22 FD 20		shld	X20fd
+  1823 0C15 C9			ret
 			
-  1773 0C16 21 45 21		lxi	h,X2145
-  1774 0C19 78			mov	a,b
-  1775 0C1A B7			ora	a
-  1776 0C1B C2 23 0C		jnz	X0c23
-  1777 0C1E 7E			mov	a,m
-  1778 0C1F E6 F0		ani	0f0h
-  1779 0C21 77			mov	m,a
-  1780 0C22 C9			ret
+  1825 0C16 21 45 21		lxi	h,X2145
+  1826 0C19 78			mov	a,b
+  1827 0C1A B7			ora	a
+  1828 0C1B C2 23 0C		jnz	X0c23
+  1829 0C1E 7E			mov	a,m
+  1830 0C1F E6 F0		ani	0f0h
+  1831 0C21 77			mov	m,a
+  1832 0C22 C9			ret
 			
-  1782 0C23 D6 05	X0c23:	sui	5
-  1783 0C25 F0			rp
-  1784 0C26 47			mov	b,a
-  1785 0C27 AF			xra	a
-  1786 0C28 37			stc
-  1787 0C29 17		X0c29:	ral
-  1788 0C2A 04			inr	b
-  1789 0C2B C2 29 0C		jnz	X0c29
-  1790 0C2E B6			ora	m
-  1791 0C2F 77			mov	m,a
-  1792 0C30 C9			ret
+  1834 0C23 D6 05	X0c23:	sui	5
+  1835 0C25 F0			rp
+  1836 0C26 47			mov	b,a
+  1837 0C27 AF			xra	a
+  1838 0C28 37			stc
+  1839 0C29 17		X0c29:	ral
+  1840 0C2A 04			inr	b
+  1841 0C2B C2 29 0C		jnz	X0c29
+  1842 0C2E B6			ora	m
+  1843 0C2F 77			mov	m,a
+  1844 0C30 C9			ret
 			
-  1794 0C31 13		X0c31:	inx	d
-  1795 0C32 3A 7E 20	X0c32:	lda	X207e
-  1796 0C35 47			mov	b,a
-  1797 0C36 21 4A 0C		lxi	h,X0c4a
-  1798 0C39 23		X0c39:	inx	h
-  1799 0C3A 23			inx	h
-  1800 0C3B 7E			mov	a,m
-  1801 0C3C B7			ora	a
-  1802 0C3D C8			rz
-  1803 0C3E B8			cmp	b
-  1804 0C3F C2 39 0C		jnz	X0c39
-  1805 0C42 23			inx	h
-  1806 0C43 7E			mov	a,m
-  1807 0C44 12			stax	d
-  1808 0C45 C9			ret
+  1846 0C31 13		X0c31:	inx	d
+  1847 0C32 3A 7E 20	X0c32:	lda	X207e
+  1848 0C35 47			mov	b,a
+  1849 0C36 21 4A 0C		lxi	h,X0c4a
+  1850 0C39 23		X0c39:	inx	h
+  1851 0C3A 23			inx	h
+  1852 0C3B 7E			mov	a,m
+  1853 0C3C B7			ora	a
+  1854 0C3D C8			rz
+  1855 0C3E B8			cmp	b
+  1856 0C3F C2 39 0C		jnz	X0c39
+  1857 0C42 23			inx	h
+  1858 0C43 7E			mov	a,m
+  1859 0C44 12			stax	d
+  1860 0C45 C9			ret
 			
-  1810 0C46 21 FC 20	X0c46:	lxi	h,X20fc
-  1811 0C49 34			inr	m
-  1812 0C4A 34		X0c4a:	inr	m
-  1813 0C4B C9			ret
+  1862 0C46 21 FC 20	X0c46:	lxi	h,X20fc
+  1863 0C49 34			inr	m
+  1864 0C4A 34		X0c4a:	inr	m
+  1865 0C4B C9			ret
 			
-  1815 0C4C 41			mov	b,c
-  1816 0C4D 48			mov	c,b
-  1817 0C4E 42			mov	b,d
-  1818 0C4F			db	8
+  1867 0C4C 41			mov	b,c
+  1868 0C4D 48			mov	c,b
+  1869 0C4E 42			mov	b,d
+  1870 0C4F			db	8
             08 
-  1819 0C50			db	30h
+  1871 0C50			db	30h
             30 
-  1820 0C51 88			adc	b
-  1821 0C52 31 00 32		lxi	sp,X3200
-  1822 0C55 80			add	b
-  1823 0C56 00			nop
-  1824 0C57 21 79 20	X0c57:	lxi	h,X2079
-  1825 0C5A 7E			mov	a,m
-  1826 0C5B B7			ora	a
-  1827 0C5C CA 14 0A		jz	X0a14
-  1828 0C5F 36 81		mvi	m,81h
-  1829 0C61 E1			pop	h
-  1830 0C62 21 AD 05	X0c62:	lxi	h,X05ad
-  1831 0C65 C3 18 0A		jmp	X0a18
+  1872 0C51 88			adc	b
+  1873 0C52 31 00 32		lxi	sp,X3200
+  1874 0C55 80			add	b
+  1875 0C56 00			nop
+  1876 0C57 21 79 20	X0c57:	lxi	h,X2079
+  1877 0C5A 7E			mov	a,m
+  1878 0C5B B7			ora	a
+  1879 0C5C CA 14 0A		jz	X0a14
+  1880 0C5F 36 81		mvi	m,81h
+  1881 0C61 E1			pop	h
+  1882 0C62 21 AD 05	X0c62:	lxi	h,X05ad
+  1883 0C65 C3 18 0A		jmp	X0a18
 			
-  1833 0C68 21 02 21		lxi	h,X2102
-  1834 0C6B 11 F8 20		lxi	d,X20f8
-  1835 0C6E C3 77 0C		jmp	X0c77
+  1885 0C68 21 02 21		lxi	h,X2102
+  1886 0C6B 11 F8 20		lxi	d,X20f8
+  1887 0C6E C3 77 0C		jmp	X0c77
 			
-  1837 0C71 21 F8 20		lxi	h,X20f8
-  1838 0C74 11 02 21		lxi	d,X2102
-  1839 0C77 06 0B	X0c77:	mvi	b,0bh
-  1840 0C79 CD 8B 03		call	memmov
-  1841 0C7C C3 36 16		jmp	X1636
+  1889 0C71 21 F8 20		lxi	h,X20f8
+  1890 0C74 11 02 21		lxi	d,X2102
+  1891 0C77 06 0B	X0c77:	mvi	b,0bh
+  1892 0C79 CD 8B 03		call	memmov
+  1893 0C7C C3 36 16		jmp	X1636
 			
-  1843 0C7F 21 8A 0C		lxi	h,X0c8a
-  1844 0C82 78			mov	a,b
-  1845 0C83 B7			ora	a
-  1846 0C84 CA 97 0C		jz	X0c97
-  1847 0C87 C3 FF 09		jmp	X09ff
+  1895 0C7F 21 8A 0C		lxi	h,X0c8a
+  1896 0C82 78			mov	a,b
+  1897 0C83 B7			ora	a
+  1898 0C84 CA 97 0C		jz	X0c97
+  1899 0C87 C3 FF 09		jmp	X09ff
 			
-  1849 0C8A 01 A2 0C	X0c8a:	lxi	b,X0ca2
-  1850 0C8D 04			inr	b
-  1851 0C8E A7			ana	a
-  1852 0C8F 0C			inr	c
-  1853 0C90 05			dcr	b
-  1854 0C91 B3			ora	e
-  1855 0C92 0C			inr	c
-  1856 0C93 07			rlc
-  1857 0C94 BB			cmp	e
-  1858 0C95 0C			inr	c
-  1859 0C96 00			nop
-  1860 0C97 32 FB 20	X0c97:	sta	X20fb
-  1861 0C9A 21 FA 20		lxi	h,X20fa
-  1862 0C9D 7E			mov	a,m
-  1863 0C9E F6 F7		ori	0f7h
-  1864 0CA0 77			mov	m,a
-  1865 0CA1 C9			ret
+  1901 0C8A 01 A2 0C	X0c8a:	lxi	b,X0ca2
+  1902 0C8D 04			inr	b
+  1903 0C8E A7			ana	a
+  1904 0C8F 0C			inr	c
+  1905 0C90 05			dcr	b
+  1906 0C91 B3			ora	e
+  1907 0C92 0C			inr	c
+  1908 0C93 07			rlc
+  1909 0C94 BB			cmp	e
+  1910 0C95 0C			inr	c
+  1911 0C96 00			nop
+  1912 0C97 32 FB 20	X0c97:	sta	X20fb
+  1913 0C9A 21 FA 20		lxi	h,X20fa
+  1914 0C9D 7E			mov	a,m
+  1915 0C9E F6 F7		ori	0f7h
+  1916 0CA0 77			mov	m,a
+  1917 0CA1 C9			ret
 			
-  1867 0CA2 3E FB	X0ca2:	mvi	a,0fbh
-  1868 0CA4 C3 B5 0C		jmp	X0cb5
+  1919 0CA2 3E FB	X0ca2:	mvi	a,0fbh
+  1920 0CA4 C3 B5 0C		jmp	X0cb5
 			
-  1870 0CA7 3A C8 21		lda	X21c8
-  1871 0CAA B7			ora	a
-  1872 0CAB C2 BB 0C		jnz	X0cbb
-  1873 0CAE 3E FD		mvi	a,0fdh
-  1874 0CB0 C3 B5 0C		jmp	X0cb5
+  1922 0CA7 3A C8 21		lda	X21c8
+  1923 0CAA B7			ora	a
+  1924 0CAB C2 BB 0C		jnz	X0cbb
+  1925 0CAE 3E FD		mvi	a,0fdh
+  1926 0CB0 C3 B5 0C		jmp	X0cb5
 			
-  1876 0CB3 3E FE		mvi	a,0feh
-  1877 0CB5 21 FA 20	X0cb5:	lxi	h,X20fa
-  1878 0CB8 A6			ana	m
-  1879 0CB9 77			mov	m,a
-  1880 0CBA C9			ret
+  1928 0CB3 3E FE		mvi	a,0feh
+  1929 0CB5 21 FA 20	X0cb5:	lxi	h,X20fa
+  1930 0CB8 A6			ana	m
+  1931 0CB9 77			mov	m,a
+  1932 0CBA C9			ret
 			
-  1882 0CBB 3E 80	X0cbb:	mvi	a,80h
-  1883 0CBD 32 FB 20		sta	X20fb
-  1884 0CC0 C9			ret
+  1934 0CBB 3E 80	X0cbb:	mvi	a,80h
+  1935 0CBD 32 FB 20		sta	X20fb
+  1936 0CC0 C9			ret
 			
-  1886 0CC1 3A 30 21		lda	X2130
-  1887 0CC4 B7			ora	a
-  1888 0CC5 C0			rnz
-  1889 0CC6 21 72 21		lxi	h,X2172
-  1890 0CC9 7E			mov	a,m
-  1891 0CCA F6 04		ori	4
-  1892 0CCC 77			mov	m,a
-  1893 0CCD C9			ret
+  1938 0CC1 3A 30 21		lda	X2130
+  1939 0CC4 B7			ora	a
+  1940 0CC5 C0			rnz
+  1941 0CC6 21 72 21		lxi	h,X2172
+  1942 0CC9 7E			mov	a,m
+  1943 0CCA F6 04		ori	4
+  1944 0CCC 77			mov	m,a
+  1945 0CCD C9			ret
 			
-  1895 0CCE 3E FB		mvi	a,0fbh
-  1896 0CD0 CD BF 0D		call	X0dbf
-  1897 0CD3 3A A7 21		lda	X21a7
-  1898 0CD6 E6 20		ani	20h
-  1899 0CD8 C2 E3 0C		jnz	X0ce3
-  1900 0CDB 36 DA		mvi	m,0dah
-  1901 0CDD 2B			dcx	h
-  1902 0CDE 36 2F		mvi	m,2fh
-  1903 0CE0 C3 F3 0E		jmp	X0ef3
+  1947 0CCE 3E FB		mvi	a,0fbh
+  1948 0CD0 CD BF 0D		call	X0dbf
+  1949 0CD3 3A A7 21		lda	X21a7
+  1950 0CD6 E6 20		ani	20h
+  1951 0CD8 C2 E3 0C		jnz	X0ce3
+  1952 0CDB 36 DA		mvi	m,0dah
+  1953 0CDD 2B			dcx	h
+  1954 0CDE 36 2F		mvi	m,2fh
+  1955 0CE0 C3 F3 0E		jmp	X0ef3
 			
-  1905 0CE3 36 3F	X0ce3:	mvi	m,3fh
-  1906 0CE5 23			inx	h
-  1907 0CE6 3E 31		mvi	a,31h
-  1908 0CE8 CD B9 0D		call	X0db9
-  1909 0CEB DB 42		in	42h
-  1910 0CED 47			mov	b,a
-  1911 0CEE 2F			cma
-  1912 0CEF E6 06		ani	6
-  1913 0CF1 4F			mov	c,a
-  1914 0CF2 78			mov	a,b
-  1915 0CF3 E6 08		ani	8
-  1916 0CF5 CA F9 0C		jz	X0cf9
-  1917 0CF8 0C			inr	c
-  1918 0CF9 79		X0cf9:	mov	a,c
-  1919 0CFA F6 30		ori	30h
-  1920 0CFC 77			mov	m,a
-  1921 0CFD 23			inx	h
-  1922 0CFE 36 E3		mvi	m,0e3h
-  1923 0D00 C3 F3 0E		jmp	X0ef3
+  1957 0CE3 36 3F	X0ce3:	mvi	m,3fh
+  1958 0CE5 23			inx	h
+  1959 0CE6 3E 31		mvi	a,31h
+  1960 0CE8 CD B9 0D		call	X0db9
+  1961 0CEB DB 42		in	42h
+  1962 0CED 47			mov	b,a
+  1963 0CEE 2F			cma
+  1964 0CEF E6 06		ani	6
+  1965 0CF1 4F			mov	c,a
+  1966 0CF2 78			mov	a,b
+  1967 0CF3 E6 08		ani	8
+  1968 0CF5 CA F9 0C		jz	X0cf9
+  1969 0CF8 0C			inr	c
+  1970 0CF9 79		X0cf9:	mov	a,c
+  1971 0CFA F6 30		ori	30h
+  1972 0CFC 77			mov	m,a
+  1973 0CFD 23			inx	h
+  1974 0CFE 36 E3		mvi	m,0e3h
+  1975 0D00 C3 F3 0E		jmp	X0ef3
 			
-  1925 0D03 3A B8 21		lda	X21b8
-  1926 0D06 B7			ora	a
-  1927 0D07 C0			rnz
-  1928 0D08 78			mov	a,b
-  1929 0D09 21 72 21		lxi	h,X2172
-  1930 0D0C FE 06		cpi	6
-  1931 0D0E CA 32 0D		jz	X0d32
-  1932 0D11 FE 05		cpi	5
-  1933 0D13 C0			rnz
-  1934 0D14 7E			mov	a,m
-  1935 0D15 F6 08		ori	8
-  1936 0D17 77			mov	m,a
-  1937 0D18 C9			ret
+  1977 0D03 3A B8 21		lda	X21b8
+  1978 0D06 B7			ora	a
+  1979 0D07 C0			rnz
+  1980 0D08 78			mov	a,b
+  1981 0D09 21 72 21		lxi	h,X2172
+  1982 0D0C FE 06		cpi	6
+  1983 0D0E CA 32 0D		jz	X0d32
+  1984 0D11 FE 05		cpi	5
+  1985 0D13 C0			rnz
+  1986 0D14 7E			mov	a,m
+  1987 0D15 F6 08		ori	8
+  1988 0D17 77			mov	m,a
+  1989 0D18 C9			ret
 			
-  1939 0D19 3E F7		mvi	a,0f7h
-  1940 0D1B CD BF 0D		call	X0dbf
-  1941 0D1E 06 03		mvi	b,3
-  1942 0D20 3A BD 21		lda	X21bd
-  1943 0D23 B7			ora	a
-  1944 0D24 78			mov	a,b
-  1945 0D25 C2 29 0D		jnz	X0d29
-  1946 0D28 AF			xra	a
-  1947 0D29 F6 30	X0d29:	ori	30h
-  1948 0D2B 77			mov	m,a
-  1949 0D2C 23			inx	h
-  1950 0D2D 36 EE		mvi	m,0eeh
-  1951 0D2F C3 F3 0E	X0d2f:	jmp	X0ef3
+  1991 0D19 3E F7		mvi	a,0f7h
+  1992 0D1B CD BF 0D		call	X0dbf
+  1993 0D1E 06 03		mvi	b,3
+  1994 0D20 3A BD 21		lda	X21bd
+  1995 0D23 B7			ora	a
+  1996 0D24 78			mov	a,b
+  1997 0D25 C2 29 0D		jnz	X0d29
+  1998 0D28 AF			xra	a
+  1999 0D29 F6 30	X0d29:	ori	30h
+  2000 0D2B 77			mov	m,a
+  2001 0D2C 23			inx	h
+  2002 0D2D 36 EE		mvi	m,0eeh
+  2003 0D2F C3 F3 0E	X0d2f:	jmp	X0ef3
 			
-  1953 0D32 7E		X0d32:	mov	a,m
-  1954 0D33 F6 01		ori	1
-  1955 0D35 77			mov	m,a
-  1956 0D36 C9			ret
+  2005 0D32 7E		X0d32:	mov	a,m
+  2006 0D33 F6 01		ori	1
+  2007 0D35 77			mov	m,a
+  2008 0D36 C9			ret
 			
-  1958 0D37 3E FE		mvi	a,0feh
-  1959 0D39 CD BF 0D		call	X0dbf
-  1960 0D3C 3A F9 20		lda	X20f9
-  1961 0D3F 47			mov	b,a
-  1962 0D40 3A 01 21		lda	X2101
-  1963 0D43 B7			ora	a
-  1964 0D44 CA 4A 0D		jz	X0d4a
-  1965 0D47 3A 55 21		lda	X2155
-  1966 0D4A 4F		X0d4a:	mov	c,a
-  1967 0D4B 78			mov	a,b
-  1968 0D4C 91			sub	c
-  1969 0D4D 3C			inr	a
-  1970 0D4E CD 7A 0D		call	X0d7a
-  1971 0D51 CD BB 0D		call	X0dbb
-  1972 0D54 3A F8 20		lda	X20f8
-  1973 0D57 3C			inr	a
-  1974 0D58 CD 7A 0D		call	X0d7a
-  1975 0D5B 36 D2		mvi	m,0d2h
-  1976 0D5D C3 F3 0E		jmp	X0ef3
+  2010 0D37 3E FE		mvi	a,0feh
+  2011 0D39 CD BF 0D		call	X0dbf
+  2012 0D3C 3A F9 20		lda	X20f9
+  2013 0D3F 47			mov	b,a
+  2014 0D40 3A 01 21		lda	X2101
+  2015 0D43 B7			ora	a
+  2016 0D44 CA 4A 0D		jz	X0d4a
+  2017 0D47 3A 55 21		lda	X2155
+  2018 0D4A 4F		X0d4a:	mov	c,a
+  2019 0D4B 78			mov	a,b
+  2020 0D4C 91			sub	c
+  2021 0D4D 3C			inr	a
+  2022 0D4E CD 7A 0D		call	X0d7a
+  2023 0D51 CD BB 0D		call	X0dbb
+  2024 0D54 3A F8 20		lda	X20f8
+  2025 0D57 3C			inr	a
+  2026 0D58 CD 7A 0D		call	X0d7a
+  2027 0D5B 36 D2		mvi	m,0d2h
+  2028 0D5D C3 F3 0E		jmp	X0ef3
 			
-  1978 0D60 DB 42		in	42h
-  1979 0D62 E6 04		ani	4
-  1980 0D64 C0			rnz
-  1981 0D65 0E 81		mvi	c,81h
-  1982 0D67 CD 8E 10		call	X108e
-  1983 0D6A 3E FF		mvi	a,0ffh
-  1984 0D6C D3 E2		out	0e2h
-  1985 0D6E 00			nop
-  1986 0D6F CD 88 14	X0d6f:	call	X1488
-  1987 0D72 DB 42		in	42h
-  1988 0D74 E6 04		ani	4
-  1989 0D76 C2 6F 0D		jnz	X0d6f
-  1990 0D79 C9			ret
+  2030 0D60 DB 42		in	42h
+  2031 0D62 E6 04		ani	4
+  2032 0D64 C0			rnz
+  2033 0D65 0E 81		mvi	c,81h
+  2034 0D67 CD 8E 10		call	X108e
+  2035 0D6A 3E FF		mvi	a,0ffh
+  2036 0D6C D3 E2		out	0e2h
+  2037 0D6E 00			nop
+  2038 0D6F CD 88 14	X0d6f:	call	X1488
+  2039 0D72 DB 42		in	42h
+  2040 0D74 E6 04		ani	4
+  2041 0D76 C2 6F 0D		jnz	X0d6f
+  2042 0D79 C9			ret
 			
-  1992 0D7A 5F		X0d7a:	mov	e,a
-  1993 0D7B 16 30		mvi	d,30h
-  1994 0D7D 0E 64		mvi	c,64h
-  1995 0D7F CD 99 0D		call	X0d99
-  1996 0D82 CA 88 0D		jz	X0d88
-  1997 0D85 77			mov	m,a
-  1998 0D86 23			inx	h
-  1999 0D87 15			dcr	d
-  2000 0D88 0E 0A	X0d88:	mvi	c,0ah
-  2001 0D8A CD 99 0D		call	X0d99
-  2002 0D8D CA 93 0D		jz	X0d93
-  2003 0D90 15			dcr	d
-  2004 0D91 77			mov	m,a
-  2005 0D92 23			inx	h
-  2006 0D93 7B		X0d93:	mov	a,e
-  2007 0D94 F6 30		ori	30h
-  2008 0D96 77			mov	m,a
-  2009 0D97 23			inx	h
-  2010 0D98 C9			ret
+  2044 0D7A 5F		X0d7a:	mov	e,a
+  2045 0D7B 16 30		mvi	d,30h
+  2046 0D7D 0E 64		mvi	c,64h
+  2047 0D7F CD 99 0D		call	X0d99
+  2048 0D82 CA 88 0D		jz	X0d88
+  2049 0D85 77			mov	m,a
+  2050 0D86 23			inx	h
+  2051 0D87 15			dcr	d
+  2052 0D88 0E 0A	X0d88:	mvi	c,0ah
+  2053 0D8A CD 99 0D		call	X0d99
+  2054 0D8D CA 93 0D		jz	X0d93
+  2055 0D90 15			dcr	d
+  2056 0D91 77			mov	m,a
+  2057 0D92 23			inx	h
+  2058 0D93 7B		X0d93:	mov	a,e
+  2059 0D94 F6 30		ori	30h
+  2060 0D96 77			mov	m,a
+  2061 0D97 23			inx	h
+  2062 0D98 C9			ret
 			
-  2012 0D99 7B		X0d99:	mov	a,e
-  2013 0D9A 06 30		mvi	b,30h
-  2014 0D9C 04		X0d9c:	inr	b
-  2015 0D9D 91			sub	c
-  2016 0D9E F2 9C 0D		jp	X0d9c
-  2017 0DA1 81			add	c
-  2018 0DA2 05			dcr	b
-  2019 0DA3 5F			mov	e,a
-  2020 0DA4 78			mov	a,b
-  2021 0DA5 BA			cmp	d
-  2022 0DA6 C9			ret
+  2064 0D99 7B		X0d99:	mov	a,e
+  2065 0D9A 06 30		mvi	b,30h
+  2066 0D9C 04		X0d9c:	inr	b
+  2067 0D9D 91			sub	c
+  2068 0D9E F2 9C 0D		jp	X0d9c
+  2069 0DA1 81			add	c
+  2070 0DA2 05			dcr	b
+  2071 0DA3 5F			mov	e,a
+  2072 0DA4 78			mov	a,b
+  2073 0DA5 BA			cmp	d
+  2074 0DA6 C9			ret
 			
-  2024 0DA7 3E 45		mvi	a,45h
-  2025 0DA9 32 C7 21		sta	X21c7
-  2026 0DAC CD 81 03		call	X0381
-  2027 0DAF 3E 45		mvi	a,45h
-  2028 0DB1 32 F4 20		sta	X20f4
-  2029 0DB4 AF			xra	a
-  2030 0DB5 32 C7 21		sta	X21c7
-  2031 0DB8 C9			ret
+  2076 0DA7 3E 45		mvi	a,45h
+  2077 0DA9 32 C7 21		sta	X21c7
+  2078 0DAC CD 81 03		call	X0381
+  2079 0DAF 3E 45		mvi	a,45h
+  2080 0DB1 32 F4 20		sta	X20f4
+  2081 0DB4 AF			xra	a
+  2082 0DB5 32 C7 21		sta	X21c7
+  2083 0DB8 C9			ret
 			
-  2033 0DB9 77		X0db9:	mov	m,a
-  2034 0DBA 23			inx	h
-  2035 0DBB 36 3B	X0dbb:	mvi	m,3bh
-  2036 0DBD 23			inx	h
-  2037 0DBE C9			ret
+  2085 0DB9 77		X0db9:	mov	m,a
+  2086 0DBA 23			inx	h
+  2087 0DBB 36 3B	X0dbb:	mvi	m,3bh
+  2088 0DBD 23			inx	h
+  2089 0DBE C9			ret
 			
-  2039 0DBF 21 72 21	X0dbf:	lxi	h,X2172
-  2040 0DC2 A6			ana	m
-  2041 0DC3 77			mov	m,a
-  2042 0DC4 21 5C 21		lxi	h,X215c
-  2043 0DC7 36 1B		mvi	m,1bh
-  2044 0DC9 23			inx	h
-  2045 0DCA 36 5B		mvi	m,5bh
-  2046 0DCC 23			inx	h
-  2047 0DCD C9			ret
+  2091 0DBF 21 72 21	X0dbf:	lxi	h,X2172
+  2092 0DC2 A6			ana	m
+  2093 0DC3 77			mov	m,a
+  2094 0DC4 21 5C 21		lxi	h,X215c
+  2095 0DC7 36 1B		mvi	m,1bh
+  2096 0DC9 23			inx	h
+  2097 0DCA 36 5B		mvi	m,5bh
+  2098 0DCC 23			inx	h
+  2099 0DCD C9			ret
 			
-  2049 0DCE 42			mov	b,d
-  2050 0DCF 78			mov	a,b
-  2051 0DD0 B7			ora	a
-  2052 0DD1 C2 D8 0D		jnz	X0dd8
-  2053 0DD4 CD E5 0D		call	X0de5
-  2054 0DD7 C9			ret
+  2101 0DCE 42			mov	b,d
+  2102 0DCF 78			mov	a,b
+  2103 0DD0 B7			ora	a
+  2104 0DD1 C2 D8 0D		jnz	X0dd8
+  2105 0DD4 CD E5 0D		call	X0de5
+  2106 0DD7 C9			ret
 			
-  2056 0DD8 FE 03	X0dd8:	cpi	3
-  2057 0DDA C0			rnz
-  2058 0DDB CD EC 0D		call	X0dec
-  2059 0DDE C9			ret
+  2108 0DD8 FE 03	X0dd8:	cpi	3
+  2109 0DDA C0			rnz
+  2110 0DDB CD EC 0D		call	X0dec
+  2111 0DDE C9			ret
 			
-  2061 0DDF CD 23 0E		call	X0e23
-  2062 0DE2 B6			ora	m
-  2063 0DE3 77			mov	m,a
-  2064 0DE4 C9			ret
+  2113 0DDF CD 23 0E		call	X0e23
+  2114 0DE2 B6			ora	m
+  2115 0DE3 77			mov	m,a
+  2116 0DE4 C9			ret
 			
-  2066 0DE5 CD 23 0E	X0de5:	call	X0e23
-  2067 0DE8 2F			cma
-  2068 0DE9 A6			ana	m
-  2069 0DEA 77			mov	m,a
-  2070 0DEB C9			ret
+  2118 0DE5 CD 23 0E	X0de5:	call	X0e23
+  2119 0DE8 2F			cma
+  2120 0DE9 A6			ana	m
+  2121 0DEA 77			mov	m,a
+  2122 0DEB C9			ret
 			
-  2072 0DEC 21 91 21	X0dec:	lxi	h,X2191
-  2073 0DEF AF		X0def:	xra	a
-  2074 0DF0 77			mov	m,a
-  2075 0DF1 23			inx	h
-  2076 0DF2 7D			mov	a,l
-  2077 0DF3 FE A2		cpi	0a2h
-  2078 0DF5 C2 EF 0D		jnz	X0def
-  2079 0DF8 C9			ret
+  2124 0DEC 21 91 21	X0dec:	lxi	h,X2191
+  2125 0DEF AF		X0def:	xra	a
+  2126 0DF0 77			mov	m,a
+  2127 0DF1 23			inx	h
+  2128 0DF2 7D			mov	a,l
+  2129 0DF3 FE A2		cpi	0a2h
+  2130 0DF5 C2 EF 0D		jnz	X0def
+  2131 0DF8 C9			ret
 			
-  2081 0DF9 CD 23 0E	X0df9:	call	X0e23
-  2082 0DFC 0C		X0dfc:	inr	c
-  2083 0DFD B7			ora	a
-  2084 0DFE 1F			rar
-  2085 0DFF DA 0B 0E		jc	X0e0b
-  2086 0E02 57		X0e02:	mov	d,a
-  2087 0E03 A6			ana	m
-  2088 0E04 7A			mov	a,d
-  2089 0E05 CA FC 0D		jz	X0dfc
-  2090 0E08 C3 15 0E		jmp	X0e15
+  2133 0DF9 CD 23 0E	X0df9:	call	X0e23
+  2134 0DFC 0C		X0dfc:	inr	c
+  2135 0DFD B7			ora	a
+  2136 0DFE 1F			rar
+  2137 0DFF DA 0B 0E		jc	X0e0b
+  2138 0E02 57		X0e02:	mov	d,a
+  2139 0E03 A6			ana	m
+  2140 0E04 7A			mov	a,d
+  2141 0E05 CA FC 0D		jz	X0dfc
+  2142 0E08 C3 15 0E		jmp	X0e15
 			
-  2092 0E0B 23		X0e0b:	inx	h
-  2093 0E0C 7D			mov	a,l
-  2094 0E0D FE A2		cpi	0a2h
-  2095 0E0F 3E 80		mvi	a,80h
-  2096 0E11 C2 02 0E		jnz	X0e02
-  2097 0E14 0D			dcr	c
-  2098 0E15 3A 53 21	X0e15:	lda	X2153
-  2099 0E18 B9			cmp	c
-  2100 0E19 DA 1D 0E		jc	X0e1d
-  2101 0E1C 79			mov	a,c
-  2102 0E1D 32 F8 20	X0e1d:	sta	X20f8
-  2103 0E20 C3 36 16		jmp	X1636
+  2144 0E0B 23		X0e0b:	inx	h
+  2145 0E0C 7D			mov	a,l
+  2146 0E0D FE A2		cpi	0a2h
+  2147 0E0F 3E 80		mvi	a,80h
+  2148 0E11 C2 02 0E		jnz	X0e02
+  2149 0E14 0D			dcr	c
+  2150 0E15 3A 53 21	X0e15:	lda	X2153
+  2151 0E18 B9			cmp	c
+  2152 0E19 DA 1D 0E		jc	X0e1d
+  2153 0E1C 79			mov	a,c
+  2154 0E1D 32 F8 20	X0e1d:	sta	X20f8
+  2155 0E20 C3 36 16		jmp	X1636
 			
-  2105 0E23 3A F8 20	X0e23:	lda	X20f8
-  2106 0E26 4F			mov	c,a
-  2107 0E27 57		X0e27:	mov	d,a
-  2108 0E28 21 91 21		lxi	h,X2191
-  2109 0E2B 0F		X0e2b:	rrc
-  2110 0E2C 0F			rrc
-  2111 0E2D 0F			rrc
-  2112 0E2E E6 1F		ani	1fh
-  2113 0E30 85			add	l
-  2114 0E31 6F			mov	l,a
-  2115 0E32 7A			mov	a,d
-  2116 0E33 E6 07		ani	7
-  2117 0E35 57			mov	d,a
-  2118 0E36 3E 80		mvi	a,80h
-  2119 0E38 15		X0e38:	dcr	d
-  2120 0E39 F8			rm
-  2121 0E3A 0F			rrc
-  2122 0E3B C3 38 0E		jmp	X0e38
+  2157 0E23 3A F8 20	X0e23:	lda	X20f8
+  2158 0E26 4F			mov	c,a
+  2159 0E27 57		X0e27:	mov	d,a
+  2160 0E28 21 91 21		lxi	h,X2191
+  2161 0E2B 0F		X0e2b:	rrc
+  2162 0E2C 0F			rrc
+  2163 0E2D 0F			rrc
+  2164 0E2E E6 1F		ani	1fh
+  2165 0E30 85			add	l
+  2166 0E31 6F			mov	l,a
+  2167 0E32 7A			mov	a,d
+  2168 0E33 E6 07		ani	7
+  2169 0E35 57			mov	d,a
+  2170 0E36 3E 80		mvi	a,80h
+  2171 0E38 15		X0e38:	dcr	d
+  2172 0E39 F8			rm
+  2173 0E3A 0F			rrc
+  2174 0E3B C3 38 0E		jmp	X0e38
 			
-  2124 0E3E 3A A5 21	X0e3e:	lda	X21a5
-  2125 0E41 21 7B 20		lxi	h,X207b
-  2126 0E44 B6			ora	m
-  2127 0E45 47			mov	b,a
-  2128 0E46 C0			rnz
-  2129 0E47 DB 42	X0e47:	in	42h
-  2130 0E49 E6 01		ani	1
-  2131 0E4B C8			rz
-  2132 0E4C 21 C1 21		lxi	h,X21c1
-  2133 0E4F 7E			mov	a,m
-  2134 0E50 B7			ora	a
-  2135 0E51 36 00		mvi	m,0
-  2136 0E53 2B			dcx	h
-  2137 0E54 C8			rz
-  2138 0E55 7E			mov	a,m
-  2139 0E56 D3 00		out	0
-  2140 0E58 C9			ret
+  2176 0E3E 3A A5 21	X0e3e:	lda	X21a5
+  2177 0E41 21 7B 20		lxi	h,X207b
+  2178 0E44 B6			ora	m
+  2179 0E45 47			mov	b,a
+  2180 0E46 C0			rnz
+  2181 0E47 DB 42	X0e47:	in	42h
+  2182 0E49 E6 01		ani	1
+  2183 0E4B C8			rz
+  2184 0E4C 21 C1 21		lxi	h,X21c1
+  2185 0E4F 7E			mov	a,m
+  2186 0E50 B7			ora	a
+  2187 0E51 36 00		mvi	m,0
+  2188 0E53 2B			dcx	h
+  2189 0E54 C8			rz
+  2190 0E55 7E			mov	a,m
+  2191 0E56 D3 00		out	0
+  2192 0E58 C9			ret
 			
-  2142 0E59 F3		X0e59:	di
-  2143 0E5A CD 3E 0E		call	X0e3e
-  2144 0E5D FB			ei
-  2145 0E5E 78			mov	a,b
-  2146 0E5F B7			ora	a
-  2147 0E60 C2 6D 0E		jnz	X0e6d
-  2148 0E63 DB 42		in	42h
-  2149 0E65 E6 01		ani	1
-  2150 0E67 C8			rz
-  2151 0E68 3A C2 21		lda	X21c2
-  2152 0E6B B7			ora	a
-  2153 0E6C C0			rnz
-  2154 0E6D 21 73 21	X0e6d:	lxi	h,X2173
-  2155 0E70 7E			mov	a,m
-  2156 0E71 B7			ora	a
-  2157 0E72 CA 79 0E		jz	X0e79
-  2158 0E75 2A 74 21		lhld	X2174
-  2159 0E78 E9			pchl
+  2194 0E59 F3		X0e59:	di
+  2195 0E5A CD 3E 0E		call	X0e3e
+  2196 0E5D FB			ei
+  2197 0E5E 78			mov	a,b
+  2198 0E5F B7			ora	a
+  2199 0E60 C2 6D 0E		jnz	X0e6d
+  2200 0E63 DB 42		in	42h
+  2201 0E65 E6 01		ani	1
+  2202 0E67 C8			rz
+  2203 0E68 3A C2 21		lda	X21c2
+  2204 0E6B B7			ora	a
+  2205 0E6C C0			rnz
+  2206 0E6D 21 73 21	X0e6d:	lxi	h,X2173
+  2207 0E70 7E			mov	a,m
+  2208 0E71 B7			ora	a
+  2209 0E72 CA 79 0E		jz	X0e79
+  2210 0E75 2A 74 21		lhld	X2174
+  2211 0E78 E9			pchl
 			
-  2161 0E79 3A 72 21	X0e79:	lda	X2172
-  2162 0E7C B7			ora	a
-  2163 0E7D C8			rz
-  2164 0E7E 1E 00		mvi	e,0
-  2165 0E80 1F		X0e80:	rar
-  2166 0E81 DA 89 0E		jc	X0e89
-  2167 0E84 1C			inr	e
-  2168 0E85 1C			inr	e
-  2169 0E86 C3 80 0E		jmp	X0e80
+  2213 0E79 3A 72 21	X0e79:	lda	X2172
+  2214 0E7C B7			ora	a
+  2215 0E7D C8			rz
+  2216 0E7E 1E 00		mvi	e,0
+  2217 0E80 1F		X0e80:	rar
+  2218 0E81 DA 89 0E		jc	X0e89
+  2219 0E84 1C			inr	e
+  2220 0E85 1C			inr	e
+  2221 0E86 C3 80 0E		jmp	X0e80
 			
-  2171 0E89 16 00	X0e89:	mvi	d,0
-  2172 0E8B 21 94 0E		lxi	h,X0e94
-  2173 0E8E 19			dad	d
-  2174 0E8F 7E			mov	a,m
-  2175 0E90 23			inx	h
-  2176 0E91 66			mov	h,m
-  2177 0E92 6F			mov	l,a
-  2178 0E93 E9			pchl
+  2223 0E89 16 00	X0e89:	mvi	d,0
+  2224 0E8B 21 94 0E		lxi	h,X0e94
+  2225 0E8E 19			dad	d
+  2226 0E8F 7E			mov	a,m
+  2227 0E90 23			inx	h
+  2228 0E91 66			mov	h,m
+  2229 0E92 6F			mov	l,a
+  2230 0E93 E9			pchl
 			
-  2180 0E94 37		X0e94:	stc
-  2181 0E95 0D			dcr	c
-  2182 0E96 F0			rp
-  2183 0E97 12			stax	d
-  2184 0E98 CE 0C		aci	0ch
-  2185 0E9A 19			dad	d
-  2186 0E9B 0D			dcr	c
-  2187 0E9C 13			inx	d
-  2188 0E9D 09			dad	b
-  2189 0E9E A0			ana	b
-  2190 0E9F 0E 21		mvi	c,21h
-  2191 0EA1 5C			mov	e,h
-  2192 0EA2			db	20h
+  2232 0E94 37		X0e94:	stc
+  2233 0E95 0D			dcr	c
+  2234 0E96 F0			rp
+  2235 0E97 12			stax	d
+  2236 0E98 CE 0C		aci	0ch
+  2237 0E9A 19			dad	d
+  2238 0E9B 0D			dcr	c
+  2239 0E9C 13			inx	d
+  2240 0E9D 09			dad	b
+  2241 0E9E A0			ana	b
+  2242 0E9F 0E 21		mvi	c,21h
+  2243 0EA1 5C			mov	e,h
+  2244 0EA2			db	20h
             20 
-  2193 0EA3 46			mov	b,m
-  2194 0EA4 54			mov	d,h
-  2195 0EA5 5D			mov	e,l
-  2196 0EA6 13			inx	d
-  2197 0EA7 0E 08		mvi	c,8
-  2198 0EA9 1A		X0ea9:	ldax	d
-  2199 0EAA 77			mov	m,a
-  2200 0EAB 23			inx	h
-  2201 0EAC 13			inx	d
-  2202 0EAD 0D			dcr	c
-  2203 0EAE C2 A9 0E		jnz	X0ea9
-  2204 0EB1 21 43 21		lxi	h,X2143
-  2205 0EB4 35			dcr	m
-  2206 0EB5 7E			mov	a,m
-  2207 0EB6 4F			mov	c,a
-  2208 0EB7 C2 C1 0E		jnz	X0ec1
-  2209 0EBA 21 72 21		lxi	h,X2172
-  2210 0EBD 7E			mov	a,m
-  2211 0EBE E6 DF		ani	0dfh
-  2212 0EC0 77			mov	m,a
-  2213 0EC1 3A A5 21	X0ec1:	lda	X21a5
-  2214 0EC4 B7			ora	a
-  2215 0EC5 C2 CF 0E		jnz	X0ecf
-  2216 0EC8 79			mov	a,c
-  2217 0EC9 FE 05		cpi	5
-  2218 0ECB D2 D2 0E		jnc	X0ed2
-  2219 0ECE AF			xra	a
-  2220 0ECF 32 44 21	X0ecf:	sta	X2144
-  2221 0ED2 78		X0ed2:	mov	a,b
-  2222 0ED3 E6 80		ani	80h
-  2223 0ED5 17			ral
-  2224 0ED6 3F			cmc
-  2225 0ED7 1F			rar
-  2226 0ED8 32 73 21		sta	X2173
-  2227 0EDB 21 A0 0E		lxi	h,X0ea0
-  2228 0EDE 22 74 21		shld	X2174
-  2229 0EE1 78		X0ee1:	mov	a,b
-  2230 0EE2 E6 7F		ani	7fh
-  2231 0EE4 47			mov	b,a
-  2232 0EE5 3A A5 21		lda	X21a5
-  2233 0EE8 21 7B 20		lxi	h,X207b
-  2234 0EEB B6			ora	m
-  2235 0EEC 78			mov	a,b
-  2236 0EED C2 93 05		jnz	X0593
-  2237 0EF0 D3 00		out	0
-  2238 0EF2 C9			ret
+  2245 0EA3 46			mov	b,m
+  2246 0EA4 54			mov	d,h
+  2247 0EA5 5D			mov	e,l
+  2248 0EA6 13			inx	d
+  2249 0EA7 0E 08		mvi	c,8
+  2250 0EA9 1A		X0ea9:	ldax	d
+  2251 0EAA 77			mov	m,a
+  2252 0EAB 23			inx	h
+  2253 0EAC 13			inx	d
+  2254 0EAD 0D			dcr	c
+  2255 0EAE C2 A9 0E		jnz	X0ea9
+  2256 0EB1 21 43 21		lxi	h,X2143
+  2257 0EB4 35			dcr	m
+  2258 0EB5 7E			mov	a,m
+  2259 0EB6 4F			mov	c,a
+  2260 0EB7 C2 C1 0E		jnz	X0ec1
+  2261 0EBA 21 72 21		lxi	h,X2172
+  2262 0EBD 7E			mov	a,m
+  2263 0EBE E6 DF		ani	0dfh
+  2264 0EC0 77			mov	m,a
+  2265 0EC1 3A A5 21	X0ec1:	lda	X21a5
+  2266 0EC4 B7			ora	a
+  2267 0EC5 C2 CF 0E		jnz	X0ecf
+  2268 0EC8 79			mov	a,c
+  2269 0EC9 FE 05		cpi	5
+  2270 0ECB D2 D2 0E		jnc	X0ed2
+  2271 0ECE AF			xra	a
+  2272 0ECF 32 44 21	X0ecf:	sta	X2144
+  2273 0ED2 78		X0ed2:	mov	a,b
+  2274 0ED3 E6 80		ani	80h
+  2275 0ED5 17			ral
+  2276 0ED6 3F			cmc
+  2277 0ED7 1F			rar
+  2278 0ED8 32 73 21		sta	X2173
+  2279 0EDB 21 A0 0E		lxi	h,X0ea0
+  2280 0EDE 22 74 21		shld	X2174
+  2281 0EE1 78		X0ee1:	mov	a,b
+  2282 0EE2 E6 7F		ani	7fh
+  2283 0EE4 47			mov	b,a
+  2284 0EE5 3A A5 21		lda	X21a5
+  2285 0EE8 21 7B 20		lxi	h,X207b
+  2286 0EEB B6			ora	m
+  2287 0EEC 78			mov	a,b
+  2288 0EED C2 93 05		jnz	X0593
+  2289 0EF0 D3 00		out	0
+  2290 0EF2 C9			ret
 			
-  2240 0EF3 21 01 0F	X0ef3:	lxi	h,X0f01
-  2241 0EF6 22 74 21		shld	X2174
-  2242 0EF9 AF			xra	a
-  2243 0EFA 32 71 21		sta	X2171
-  2244 0EFD 3C			inr	a
-  2245 0EFE 32 73 21		sta	X2173
-  2246 0F01 21 71 21	X0f01:	lxi	h,X2171
-  2247 0F04 7E			mov	a,m
-  2248 0F05 34			inr	m
-  2249 0F06 21 5C 21		lxi	h,X215c
-  2250 0F09 85			add	l
-  2251 0F0A 6F			mov	l,a
-  2252 0F0B 46			mov	b,m
-  2253 0F0C 78			mov	a,b
-  2254 0F0D B7			ora	a
-  2255 0F0E F2 E1 0E		jp	X0ee1
-  2256 0F11 AF			xra	a
-  2257 0F12 32 73 21		sta	X2173
-  2258 0F15 C3 E1 0E		jmp	X0ee1
+  2292 0EF3 21 01 0F	X0ef3:	lxi	h,X0f01
+  2293 0EF6 22 74 21		shld	X2174
+  2294 0EF9 AF			xra	a
+  2295 0EFA 32 71 21		sta	X2171
+  2296 0EFD 3C			inr	a
+  2297 0EFE 32 73 21		sta	X2173
+  2298 0F01 21 71 21	X0f01:	lxi	h,X2171
+  2299 0F04 7E			mov	a,m
+  2300 0F05 34			inr	m
+  2301 0F06 21 5C 21		lxi	h,X215c
+  2302 0F09 85			add	l
+  2303 0F0A 6F			mov	l,a
+  2304 0F0B 46			mov	b,m
+  2305 0F0C 78			mov	a,b
+  2306 0F0D B7			ora	a
+  2307 0F0E F2 E1 0E		jp	X0ee1
+  2308 0F11 AF			xra	a
+  2309 0F12 32 73 21		sta	X2173
+  2310 0F15 C3 E1 0E		jmp	X0ee1
 			
-  2260 0F18 E5		X0f18:	push	h
-  2261 0F19 D5			push	d
-  2262 0F1A 57			mov	d,a
-  2263 0F1B 3A A7 21		lda	X21a7
-  2264 0F1E E6 10		ani	10h
-  2265 0F20 CA 2B 0F		jz	X0f2b
-  2266 0F23 7A			mov	a,d
-  2267 0F24 D6 91		sui	91h
-  2268 0F26 E6 FD		ani	0fdh
-  2269 0F28 CA 61 0F		jz	X0f61
-  2270 0F2B 21 72 21	X0f2b:	lxi	h,X2172
-  2271 0F2E 7E			mov	a,m
-  2272 0F2F F6 20		ori	20h
-  2273 0F31 77			mov	m,a
-  2274 0F32 21 43 21	X0f32:	lxi	h,X2143
-  2275 0F35 7E			mov	a,m
-  2276 0F36 34			inr	m
-  2277 0F37 21 5C 20		lxi	h,X205c
-  2278 0F3A 5F			mov	e,a
-  2279 0F3B 85			add	l
-  2280 0F3C 6F			mov	l,a
-  2281 0F3D 72			mov	m,d
-  2282 0F3E 3E 8D		mvi	a,8dh
-  2283 0F40 BA			cmp	d
-  2284 0F41 C2 4E 0F		jnz	X0f4e
-  2285 0F44 3A A8 21		lda	X21a8
-  2286 0F47 E6 20		ani	20h
-  2287 0F49 16 8A		mvi	d,8ah
-  2288 0F4B C2 32 0F		jnz	X0f32
-  2289 0F4E 3A A5 21	X0f4e:	lda	X21a5
-  2290 0F51 B7			ora	a
-  2291 0F52 C2 5B 0F		jnz	X0f5b
-  2292 0F55 3E 05		mvi	a,5
-  2293 0F57 BB			cmp	e
-  2294 0F58 3E 00		mvi	a,0
-  2295 0F5A 1F			rar
-  2296 0F5B 32 44 21	X0f5b:	sta	X2144
-  2297 0F5E D1		X0f5e:	pop	d
-  2298 0F5F E1			pop	h
-  2299 0F60 C9			ret
+  2312 0F18 E5		X0f18:	push	h
+  2313 0F19 D5			push	d
+  2314 0F1A 57			mov	d,a
+  2315 0F1B 3A A7 21		lda	X21a7
+  2316 0F1E E6 10		ani	10h
+  2317 0F20 CA 2B 0F		jz	X0f2b
+  2318 0F23 7A			mov	a,d
+  2319 0F24 D6 91		sui	91h
+  2320 0F26 E6 FD		ani	0fdh
+  2321 0F28 CA 61 0F		jz	X0f61
+  2322 0F2B 21 72 21	X0f2b:	lxi	h,X2172
+  2323 0F2E 7E			mov	a,m
+  2324 0F2F F6 20		ori	20h
+  2325 0F31 77			mov	m,a
+  2326 0F32 21 43 21	X0f32:	lxi	h,X2143
+  2327 0F35 7E			mov	a,m
+  2328 0F36 34			inr	m
+  2329 0F37 21 5C 20		lxi	h,X205c
+  2330 0F3A 5F			mov	e,a
+  2331 0F3B 85			add	l
+  2332 0F3C 6F			mov	l,a
+  2333 0F3D 72			mov	m,d
+  2334 0F3E 3E 8D		mvi	a,8dh
+  2335 0F40 BA			cmp	d
+  2336 0F41 C2 4E 0F		jnz	X0f4e
+  2337 0F44 3A A8 21		lda	X21a8
+  2338 0F47 E6 20		ani	20h
+  2339 0F49 16 8A		mvi	d,8ah
+  2340 0F4B C2 32 0F		jnz	X0f32
+  2341 0F4E 3A A5 21	X0f4e:	lda	X21a5
+  2342 0F51 B7			ora	a
+  2343 0F52 C2 5B 0F		jnz	X0f5b
+  2344 0F55 3E 05		mvi	a,5
+  2345 0F57 BB			cmp	e
+  2346 0F58 3E 00		mvi	a,0
+  2347 0F5A 1F			rar
+  2348 0F5B 32 44 21	X0f5b:	sta	X2144
+  2349 0F5E D1		X0f5e:	pop	d
+  2350 0F5F E1			pop	h
+  2351 0F60 C9			ret
 			
-  2301 0F61 7A		X0f61:	mov	a,d
-  2302 0F62 E6 7F		ani	7fh
-  2303 0F64 57			mov	d,a
-  2304 0F65 21 C1 21		lxi	h,X21c1
-  2305 0F68 7E			mov	a,m
-  2306 0F69 B7			ora	a
-  2307 0F6A C2 75 0F		jnz	X0f75
-  2308 0F6D 2B			dcx	h
-  2309 0F6E 7E			mov	a,m
-  2310 0F6F BA			cmp	d
-  2311 0F70 C2 75 0F		jnz	X0f75
-  2312 0F73 23			inx	h
-  2313 0F74 72			mov	m,d
-  2314 0F75 4A		X0f75:	mov	c,d
-  2315 0F76 06 02		mvi	b,2
-  2316 0F78 CD 7E 0F		call	X0f7e
-  2317 0F7B C3 5E 0F		jmp	X0f5e
+  2353 0F61 7A		X0f61:	mov	a,d
+  2354 0F62 E6 7F		ani	7fh
+  2355 0F64 57			mov	d,a
+  2356 0F65 21 C1 21		lxi	h,X21c1
+  2357 0F68 7E			mov	a,m
+  2358 0F69 B7			ora	a
+  2359 0F6A C2 75 0F		jnz	X0f75
+  2360 0F6D 2B			dcx	h
+  2361 0F6E 7E			mov	a,m
+  2362 0F6F BA			cmp	d
+  2363 0F70 C2 75 0F		jnz	X0f75
+  2364 0F73 23			inx	h
+  2365 0F74 72			mov	m,d
+  2366 0F75 4A		X0f75:	mov	c,d
+  2367 0F76 06 02		mvi	b,2
+  2368 0F78 CD 7E 0F		call	X0f7e
+  2369 0F7B C3 5E 0F		jmp	X0f5e
 			
-  2319 0F7E 3A A7 21	X0f7e:	lda	X21a7
-  2320 0F81 E6 10		ani	10h
-  2321 0F83 C8			rz
-  2322 0F84 3A A5 21		lda	X21a5
-  2323 0F87 B7			ora	a
-  2324 0F88 C0			rnz
-  2325 0F89 79			mov	a,c
-  2326 0F8A 21 BF 21		lxi	h,X21bf
-  2327 0F8D FE 13		cpi	13h
-  2328 0F8F 78			mov	a,b
-  2329 0F90 CA 9E 0F		jz	X0f9e
-  2330 0F93 2F			cma
-  2331 0F94 A6			ana	m
-  2332 0F95 77			mov	m,a
-  2333 0F96 F5			push	psw
-  2334 0F97 E6 02		ani	2
-  2335 0F99 32 C4 21		sta	X21c4
-  2336 0F9C F1			pop	psw
-  2337 0F9D C0			rnz
-  2338 0F9E B6		X0f9e:	ora	m
-  2339 0F9F 77			mov	m,a
-  2340 0FA0 79			mov	a,c
-  2341 0FA1 21 C0 21		lxi	h,X21c0
-  2342 0FA4 BE			cmp	m
-  2343 0FA5 C8			rz
-  2344 0FA6 77			mov	m,a
-  2345 0FA7 23			inx	h
-  2346 0FA8 77			mov	m,a
-  2347 0FA9 C9			ret
+  2371 0F7E 3A A7 21	X0f7e:	lda	X21a7
+  2372 0F81 E6 10		ani	10h
+  2373 0F83 C8			rz
+  2374 0F84 3A A5 21		lda	X21a5
+  2375 0F87 B7			ora	a
+  2376 0F88 C0			rnz
+  2377 0F89 79			mov	a,c
+  2378 0F8A 21 BF 21		lxi	h,X21bf
+  2379 0F8D FE 13		cpi	13h
+  2380 0F8F 78			mov	a,b
+  2381 0F90 CA 9E 0F		jz	X0f9e
+  2382 0F93 2F			cma
+  2383 0F94 A6			ana	m
+  2384 0F95 77			mov	m,a
+  2385 0F96 F5			push	psw
+  2386 0F97 E6 02		ani	2
+  2387 0F99 32 C4 21		sta	X21c4
+  2388 0F9C F1			pop	psw
+  2389 0F9D C0			rnz
+  2390 0F9E B6		X0f9e:	ora	m
+  2391 0F9F 77			mov	m,a
+  2392 0FA0 79			mov	a,c
+  2393 0FA1 21 C0 21		lxi	h,X21c0
+  2394 0FA4 BE			cmp	m
+  2395 0FA5 C8			rz
+  2396 0FA6 77			mov	m,a
+  2397 0FA7 23			inx	h
+  2398 0FA8 77			mov	m,a
+  2399 0FA9 C9			ret
 			
 			;
 			; Main loop?
@@ -2416,2466 +2468,2469 @@
 			;	  ; return byte at [2172] in A
 			;	jmp	0FAE
 			;
-  2365 0FAA 21 7F 20	X0faa:	lxi	h,X207f
-  2366 0FAD 86			add	m
-  2367 0FAE BE		X0fae:	cmp	m
-  2368 0FAF C8			rz
-  2369 0FB0 E5			push	h
-  2370 0FB1 F5			push	psw
-  2371 0FB2 3A 7B 20	X0fb2:	lda	X207b
-  2372 0FB5 B7			ora	a
-  2373 0FB6 CC 88 14		cz	X1488
-  2374 0FB9 F1			pop	psw
-  2375 0FBA E1			pop	h
-  2376 0FBB C3 AE 0F		jmp	X0fae
+  2417 0FAA 21 7F 20	X0faa:	lxi	h,X207f
+  2418 0FAD 86			add	m
+  2419 0FAE BE		X0fae:	cmp	m
+  2420 0FAF C8			rz
+  2421 0FB0 E5			push	h
+  2422 0FB1 F5			push	psw
+  2423 0FB2 3A 7B 20		lda	X207b
+  2424 0FB5 B7			ora	a
+  2425 0FB6 CC 88 14		cz	X1488
+  2426 0FB9 F1			pop	psw
+  2427 0FBA E1			pop	h
+  2428 0FBB C3 AE 0F		jmp	X0fae
 			;
 			; End of main loop?
 			;
 			
-  2381 0FBE 2A 4E 20	X0fbe:	lhld	X204e
-  2382 0FC1 7C			mov	a,h
-  2383 0FC2 F6 F0		ori	0f0h
-  2384 0FC4 67			mov	h,a
-  2385 0FC5 22 4E 20		shld	X204e
-  2386 0FC8 3A 50 20	X0fc8:	lda	X2050
-  2387 0FCB 47		X0fcb:	mov	b,a
-  2388 0FCC 7C			mov	a,h
-  2389 0FCD E6 0F		ani	0fh
-  2390 0FCF F6 20		ori	20h
-  2391 0FD1 67			mov	h,a
-  2392 0FD2 C6 10		adi	10h
-  2393 0FD4 57			mov	d,a
-  2394 0FD5 5D			mov	e,l
-  2395 0FD6 3E FF		mvi	a,0ffh
-  2396 0FD8 36 00	X0fd8:	mvi	m,0
-  2397 0FDA 12			stax	d
-  2398 0FDB 13			inx	d
-  2399 0FDC 23			inx	h
-  2400 0FDD 05			dcr	b
-  2401 0FDE C2 D8 0F		jnz	X0fd8
-  2402 0FE1 3C			inr	a
-  2403 0FE2 32 C3 21		sta	X21c3
-  2404 0FE5 C9			ret
+  2433 0FBE 2A 4E 20	X0fbe:	lhld	scratch_start	; HL = [0x204e]
+  2434 0FC1 7C			mov	a,h
+  2435 0FC2 F6 F0		ori	0f0h
+  2436 0FC4 67			mov	h,a
+  2437 0FC5 22 4E 20		shld	scratch_start	; update [0x204e]
+  2438 0FC8 3A 50 20	X0fc8:	lda	X2050
+  2439 0FCB 47		X0fcb:	mov	b,a
+  2440 0FCC 7C			mov	a,h
+  2441 0FCD E6 0F		ani	0fh
+  2442 0FCF F6 20		ori	20h
+  2443 0FD1 67			mov	h,a
+  2444 0FD2 C6 10		adi	10h
+  2445 0FD4 57			mov	d,a
+  2446 0FD5 5D			mov	e,l
+  2447 0FD6 3E FF		mvi	a,0ffh
+  2448 0FD8 36 00	X0fd8:	mvi	m,0
+  2449 0FDA 12			stax	d
+  2450 0FDB 13			inx	d
+  2451 0FDC 23			inx	h
+  2452 0FDD 05			dcr	b
+  2453 0FDE C2 D8 0F		jnz	X0fd8
+  2454 0FE1 3C			inr	a
+  2455 0FE2 32 C3 21		sta	X21c3
+  2456 0FE5 C9			ret
 			
-  2406 0FE6 06 FF	X0fe6:	mvi	b,0ffh
-  2407 0FE8 C3 ED 0F		jmp	X0fed
+  2458 0FE6 06 FF	X0fe6:	mvi	b,0ffh
+  2459 0FE8 C3 ED 0F		jmp	X0fed
 			
-  2409 0FEB 06 01	X0feb:	mvi	b,1
-  2410 0FED 21 55 21	X0fed:	lxi	h,X2155
-  2411 0FF0 56			mov	d,m
-  2412 0FF1 23			inx	h
-  2413 0FF2 5E			mov	e,m
-  2414 0FF3 78			mov	a,b
-  2415 0FF4 B7			ora	a
-  2416 0FF5 7A			mov	a,d
-  2417 0FF6 F2 FA 0F		jp	X0ffa
-  2418 0FF9 7B			mov	a,e
-  2419 0FFA CD E6 13	X0ffa:	call	X13e6
-  2420 0FFD 7B			mov	a,e
-  2421 0FFE 92			sub	d
-  2422 0FFF 4F		X0fff:	mov	c,a
-  2423 1000 3A 2B 21	X1000:	lda	X212b
-  2424 1003 56		X1003:	mov	d,m
-  2425 1004 77			mov	m,a
-  2426 1005 78			mov	a,b
-  2427 1006 85			add	l
-  2428 1007 6F			mov	l,a
-  2429 1008 0D			dcr	c
-  2430 1009 7A			mov	a,d
-  2431 100A F2 03 10		jp	X1003
-  2432 100D E6 7F		ani	7fh
-  2433 100F 32 2B 21		sta	X212b
-  2434 1012 3E FF	X1012:	mvi	a,0ffh
-  2435 1014 32 0E 21		sta	X210e
-  2436 1017 C3 36 16		jmp	X1636
+  2461 0FEB 06 01	X0feb:	mvi	b,1
+  2462 0FED 21 55 21	X0fed:	lxi	h,X2155
+  2463 0FF0 56			mov	d,m
+  2464 0FF1 23			inx	h
+  2465 0FF2 5E			mov	e,m
+  2466 0FF3 78			mov	a,b
+  2467 0FF4 B7			ora	a
+  2468 0FF5 7A			mov	a,d
+  2469 0FF6 F2 FA 0F		jp	X0ffa
+  2470 0FF9 7B			mov	a,e
+  2471 0FFA CD E6 13	X0ffa:	call	X13e6
+  2472 0FFD 7B			mov	a,e
+  2473 0FFE 92			sub	d
+  2474 0FFF 4F		X0fff:	mov	c,a
+  2475 1000 3A 2B 21	X1000:	lda	X212b
+  2476 1003 56		X1003:	mov	d,m
+  2477 1004 77			mov	m,a
+  2478 1005 78			mov	a,b
+  2479 1006 85			add	l
+  2480 1007 6F			mov	l,a
+  2481 1008 0D			dcr	c
+  2482 1009 7A			mov	a,d
+  2483 100A F2 03 10		jp	X1003
+  2484 100D E6 7F		ani	7fh
+  2485 100F 32 2B 21		sta	X212b
+  2486 1012 3E FF	X1012:	mvi	a,0ffh
+  2487 1014 32 0E 21		sta	X210e
+  2488 1017 C3 36 16		jmp	X1636
 			
-  2438 101A CD 91 11	X101a:	call	X1191
-  2439 101D 3A 56 21		lda	X2156
-  2440 1020 CD 2F 12		call	X122f
-  2441 1023 CD E6 0F		call	X0fe6
-  2442 1026 3A 55 21		lda	X2155
-  2443 1029 3D			dcr	a
-  2444 102A C3 3E 10		jmp	X103e
+  2490 101A CD 91 11	X101a:	call	X1191
+  2491 101D 3A 56 21		lda	X2156
+  2492 1020 CD 2F 12		call	X122f
+  2493 1023 CD E6 0F		call	X0fe6
+  2494 1026 3A 55 21		lda	X2155
+  2495 1029 3D			dcr	a
+  2496 102A C3 3E 10		jmp	X103e
 			
-  2446 102D CD 91 11	X102d:	call	X1191
-  2447 1030 3A 55 21		lda	X2155
-  2448 1033 3D			dcr	a
-  2449 1034 CD 2F 12		call	X122f
-  2450 1037 CD EB 0F		call	X0feb
-  2451 103A 3A 56 21		lda	X2156
-  2452 103D 3D			dcr	a
-  2453 103E CD CE 11	X103e:	call	X11ce
-  2454 1041 FB			ei
-  2455 1042 32 7A 20		sta	X207a
-  2456 1045 21 56 21		lxi	h,X2156
-  2457 1048 7E			mov	a,m
-  2458 1049 2B			dcx	h
-  2459 104A 96			sub	m
-  2460 104B FE 17		cpi	17h
-  2461 104D C0			rnz
-  2462 104E 21 7A 20	X104e:	lxi	h,X207a
-  2463 1051 7E			mov	a,m
-  2464 1052 36 00		mvi	m,0
-  2465 1054 B7			ora	a
-  2466 1055 C8			rz
-  2467 1056 2A 56 20		lhld	X2056
-  2468 1059 EB			xchg
-  2469 105A 2A 58 20		lhld	X2058
-  2470 105D 72			mov	m,d
-  2471 105E 23			inx	h
-  2472 105F 73			mov	m,e
-  2473 1060 2A 79 21		lhld	X2179
-  2474 1063 EB			xchg
-  2475 1064 2A 75 20		lhld	X2075
-  2476 1067 72			mov	m,d
-  2477 1068 23			inx	h
-  2478 1069 73			mov	m,e
-  2479 106A 21 56 20	X106a:	lxi	h,X2056
-  2480 106D 22 58 20		shld	X2058
-  2481 1070 22 75 20		shld	X2075
-  2482 1073 C9			ret
+  2498 102D CD 91 11	X102d:	call	X1191
+  2499 1030 3A 55 21		lda	X2155
+  2500 1033 3D			dcr	a
+  2501 1034 CD 2F 12		call	X122f
+  2502 1037 CD EB 0F		call	X0feb
+  2503 103A 3A 56 21		lda	X2156
+  2504 103D 3D			dcr	a
+  2505 103E CD CE 11	X103e:	call	X11ce
+  2506 1041 FB			ei
+  2507 1042 32 7A 20		sta	X207a
+  2508 1045 21 56 21		lxi	h,X2156
+  2509 1048 7E			mov	a,m
+  2510 1049 2B			dcx	h
+  2511 104A 96			sub	m
+  2512 104B FE 17		cpi	17h
+  2513 104D C0			rnz
+  2514 104E 21 7A 20	X104e:	lxi	h,X207a
+  2515 1051 7E			mov	a,m
+  2516 1052 36 00		mvi	m,0
+  2517 1054 B7			ora	a
+  2518 1055 C8			rz
+  2519 1056 2A 56 20		lhld	X2056
+  2520 1059 EB			xchg
+  2521 105A 2A 58 20		lhld	X2058
+  2522 105D 72			mov	m,d
+  2523 105E 23			inx	h
+  2524 105F 73			mov	m,e
+  2525 1060 2A 79 21		lhld	X2179
+  2526 1063 EB			xchg
+  2527 1064 2A 75 20		lhld	X2075
+  2528 1067 72			mov	m,d
+  2529 1068 23			inx	h
+  2530 1069 73			mov	m,e
+  2531 106A 21 56 20	X106a:	lxi	h,X2056
+  2532 106D 22 58 20		shld	X2058
+  2533 1070 22 75 20		shld	X2075
+  2534 1073 C9			ret
 			
-  2484 1074 CD E3 13	X1074:	call	X13e3
-  2485 1077 E6 80		ani	80h
-  2486 1079 32 57 21		sta	X2157
-  2487 107C CD 8D 13		call	X138d
-  2488 107F 22 4E 21		shld	X214e
-  2489 1082 C9			ret
+  2536 1074 CD E3 13	X1074:	call	X13e3
+  2537 1077 E6 80		ani	80h
+  2538 1079 32 57 21		sta	X2157
+  2539 107C CD 8D 13		call	X138d
+  2540 107F 22 4E 21		shld	X214e
+  2541 1082 C9			ret
 			;;
-			;; memset: Set memory from HL to HL+DE-1 to value B
+			;; memset(0x1083): Set DE bytes at address HL to B
 			;;
-			memset:
-  2494 1083 70		X1083:	mov	m,b		;; M <- B
-  2495 1084 23			inx	h		;; HL++
-  2496 1085 1B			dcx	d		;; DE--
-  2497 1086 7A			mov	a,d		;;
-  2498 1087 B3			ora	e		;; A = D | E
-  2499 1088 C2 83 10		jnz	X1083		;; repeat if A != 0
-  2500 108B C9			ret
+  2545 1083 70		memset:	mov	m,b		;; M <- B
+  2546 1084 23			inx	h		;; HL++
+  2547 1085 1B			dcx	d		;; DE--
+  2548 1086 7A			mov	a,d		;;
+  2549 1087 B3			ora	e		;; A = D | E
+  2550 1088 C2 83 10		jnz	memset		;; repeat if A != 0
+  2551 108B C9			ret
 			
-  2502 108C 0E 00		mvi	c,0
-  2503 108E 21 51 20	X108e:	lxi	h,X2051
-  2504 1091 F3			di
-  2505 1092 3A 65 20		lda	X2065
-  2506 1095 B6			ora	m
-  2507 1096 FB			ei
-  2508 1097 CA A7 10		jz	X10a7
-  2509 109A 79			mov	a,c
-  2510 109B 1F			rar
-  2511 109C C5			push	b
-  2512 109D DC 88 14		cc	X1488
-  2513 10A0 CD 93 14		call	X1493
-  2514 10A3 C1			pop	b
-  2515 10A4 C3 8E 10		jmp	X108e
+  2553 108C 0E 00		mvi	c,0
+  2554 108E 21 51 20	X108e:	lxi	h,X2051
+  2555 1091 F3			di
+  2556 1092 3A 65 20		lda	X2065
+  2557 1095 B6			ora	m
+  2558 1096 FB			ei
+  2559 1097 CA A7 10		jz	X10a7
+  2560 109A 79			mov	a,c
+  2561 109B 1F			rar
+  2562 109C C5			push	b
+  2563 109D DC 88 14		cc	X1488
+  2564 10A0 CD 93 14		call	X1493
+  2565 10A3 C1			pop	b
+  2566 10A4 C3 8E 10		jmp	X108e
 			
-  2517 10A7 79		X10a7:	mov	a,c
-  2518 10A8 17			ral
-  2519 10A9 D0			rnc
-  2520 10AA C3 91 11		jmp	X1191
+  2568 10A7 79		X10a7:	mov	a,c
+  2569 10A8 17			ral
+  2570 10A9 D0			rnc
+  2571 10AA C3 91 11		jmp	X1191
 			
-  2522 10AD 21 70 06	X10ad:	lxi	h,X0670
-  2523 10B0 22 04 20		shld	X2004
-  2524 10B3 AF			xra	a
-  2525 10B4 32 51 20		sta	X2051
-  2526 10B7 32 65 20		sta	X2065
-  2527 10BA 32 5A 20		sta	X205a
-  2528 10BD D3 A2		out	0a2h
-  2529 10BF 3E 04		mvi	a,4
-  2530 10C1 D3 A2		out	0a2h
-  2531 10C3 CD 6A 10		call	X106a
-  2532 10C6 FB			ei
-  2533 10C7 3E 01		mvi	a,1
-  2534 10C9 CD AA 0F		call	X0faa
-  2535 10CC 21 D0 22		lxi	h,X22d0
-  2536 10CF 7C			mov	a,h
-  2537 10D0 C6 10		adi	10h
-  2538 10D2 57			mov	d,a
-  2539 10D3 5D			mov	e,l
-  2540 10D4 01 2F 0D		lxi	b,X0d2f
-  2541 10D7 3A C7 21	X10d7:	lda	X21c7
-  2542 10DA 77			mov	m,a
-  2543 10DB 23			inx	h
-  2544 10DC 3E FF		mvi	a,0ffh
-  2545 10DE 12			stax	d
-  2546 10DF 13			inx	d
-  2547 10E0 0B			dcx	b
-  2548 10E1 78			mov	a,b
-  2549 10E2 B1			ora	c
-  2550 10E3 C2 D7 10		jnz	X10d7
-  2551 10E6 3A C7 21		lda	X21c7
-  2552 10E9 32 F4 20		sta	X20f4
-  2553 10EC AF			xra	a
-  2554 10ED 32 F9 20		sta	X20f9
-  2555 10F0 32 F8 20		sta	X20f8
-  2556 10F3 3E FF		mvi	a,0ffh
-  2557 10F5 32 F5 20		sta	X20f5
-  2558 10F8 C9			ret
+  2573 10AD 21 70 06	X10ad:	lxi	h,X0670
+  2574 10B0 22 04 20		shld	X2004
+  2575 10B3 AF			xra	a
+  2576 10B4 32 51 20		sta	X2051
+  2577 10B7 32 65 20		sta	X2065
+  2578 10BA 32 5A 20		sta	X205a
+  2579 10BD D3 A2		out	0a2h
+  2580 10BF 3E 04		mvi	a,4
+  2581 10C1 D3 A2		out	0a2h
+  2582 10C3 CD 6A 10		call	X106a
+  2583 10C6 FB			ei
+  2584 10C7 3E 01		mvi	a,1
+  2585 10C9 CD AA 0F		call	X0faa
+  2586 10CC 21 D0 22		lxi	h,X22d0
+  2587 10CF 7C			mov	a,h
+  2588 10D0 C6 10		adi	10h
+  2589 10D2 57			mov	d,a
+  2590 10D3 5D			mov	e,l
+  2591 10D4 01 2F 0D		lxi	b,X0d2f
+  2592 10D7 3A C7 21	X10d7:	lda	X21c7
+  2593 10DA 77			mov	m,a
+  2594 10DB 23			inx	h
+  2595 10DC 3E FF		mvi	a,0ffh
+  2596 10DE 12			stax	d
+  2597 10DF 13			inx	d
+  2598 10E0 0B			dcx	b
+  2599 10E1 78			mov	a,b
+  2600 10E2 B1			ora	c
+  2601 10E3 C2 D7 10		jnz	X10d7
+  2602 10E6 3A C7 21		lda	X21c7
+  2603 10E9 32 F4 20		sta	X20f4
+  2604 10EC AF			xra	a
+  2605 10ED 32 F9 20		sta	X20f9
+  2606 10F0 32 F8 20		sta	X20f8
+  2607 10F3 3E FF		mvi	a,0ffh
+  2608 10F5 32 F5 20		sta	X20f5
+  2609 10F8 C9			ret
 			
-  2560 10F9 AF		X10f9:	xra	a
-  2561 10FA 32 51 20		sta	X2051
-  2562 10FD 3A 65 20	X10fd:	lda	X2065
-  2563 1100 B7			ora	a
-  2564 1101 C2 FD 10		jnz	X10fd
-  2565 1104 21 D0 22		lxi	h,X22d0
-  2566 1107 06 00		mvi	b,0
-  2567 1109 09			dad	b
-  2568 110A CD BF 11		call	X11bf
-  2569 110D 0C			inr	c
-  2570 110E CD 36 11		call	X1136
-  2571 1111 E5			push	h
-  2572 1112 06 01		mvi	b,1
-  2573 1114 CD 36 11		call	X1136
-  2574 1117 E1			pop	h
-  2575 1118 36 7F		mvi	m,7fh
-  2576 111A 23			inx	h
-  2577 111B 22 54 20		shld	X2054
-  2578 111E 36 70		mvi	m,70h
-  2579 1120 23			inx	h
-  2580 1121 36 06		mvi	m,6
-  2581 1123 79			mov	a,c
-  2582 1124 CD DE 13		call	X13de
-  2583 1127 36 7F		mvi	m,7fh
-  2584 1129 0D			dcr	c
-  2585 112A 3E 03		mvi	a,3
-  2586 112C 32 02 20		sta	X2002
-  2587 112F 21 F2 D0		lxi	h,Xd0f2
-  2588 1132 22 04 20		shld	X2004
-  2589 1135 C9			ret
+  2611 10F9 AF		X10f9:	xra	a
+  2612 10FA 32 51 20		sta	X2051
+  2613 10FD 3A 65 20	X10fd:	lda	X2065
+  2614 1100 B7			ora	a
+  2615 1101 C2 FD 10		jnz	X10fd
+  2616 1104 21 D0 22		lxi	h,X22d0
+  2617 1107 06 00		mvi	b,0
+  2618 1109 09			dad	b
+  2619 110A CD BF 11		call	X11bf
+  2620 110D 0C			inr	c
+  2621 110E CD 36 11		call	X1136
+  2622 1111 E5			push	h
+  2623 1112 06 01		mvi	b,1
+  2624 1114 CD 36 11		call	X1136
+  2625 1117 E1			pop	h
+  2626 1118 36 7F		mvi	m,7fh
+  2627 111A 23			inx	h
+  2628 111B 22 54 20		shld	X2054
+  2629 111E 36 70		mvi	m,70h
+  2630 1120 23			inx	h
+  2631 1121 36 06		mvi	m,6
+  2632 1123 79			mov	a,c
+  2633 1124 CD DE 13		call	X13de
+  2634 1127 36 7F		mvi	m,7fh
+  2635 1129 0D			dcr	c
+  2636 112A 3E 03		mvi	a,3
+  2637 112C 32 02 20		sta	X2002
+  2638 112F 21 F2 D0		lxi	h,Xd0f2
+  2639 1132 22 04 20		shld	X2004
+  2640 1135 C9			ret
 			
-  2591 1136 36 7F	X1136:	mvi	m,7fh
-  2592 1138 23			inx	h
-  2593 1139 54			mov	d,h
-  2594 113A 5D			mov	e,l
-  2595 113B 13			inx	d
-  2596 113C 13			inx	d
-  2597 113D 7A			mov	a,d
-  2598 113E F6 F0		ori	0f0h
-  2599 1140 77			mov	m,a
-  2600 1141 23			inx	h
-  2601 1142 73			mov	m,e
-  2602 1143 79			mov	a,c
-  2603 1144 CD DE 13		call	X13de
-  2604 1147 05			dcr	b
-  2605 1148 C2 36 11		jnz	X1136
-  2606 114B C9			ret
+  2642 1136 36 7F	X1136:	mvi	m,7fh
+  2643 1138 23			inx	h
+  2644 1139 54			mov	d,h
+  2645 113A 5D			mov	e,l
+  2646 113B 13			inx	d
+  2647 113C 13			inx	d
+  2648 113D 7A			mov	a,d
+  2649 113E F6 F0		ori	0f0h
+  2650 1140 77			mov	m,a
+  2651 1141 23			inx	h
+  2652 1142 73			mov	m,e
+  2653 1143 79			mov	a,c
+  2654 1144 CD DE 13		call	X13de
+  2655 1147 05			dcr	b
+  2656 1148 C2 36 11		jnz	X1136
+  2657 114B C9			ret
 			
-  2608 114C 21 C2 20	X114c:	lxi	h,X20c2
-  2609 114F 0C			inr	c
-  2610 1150 0C			inr	c
-  2611 1151 0C			inr	c
-  2612 1152 11 D0 22		lxi	d,X22d0
-  2613 1155 06 00		mvi	b,0
-  2614 1157 3E 19		mvi	a,19h
-  2615 1159 73		X1159:	mov	m,e
-  2616 115A 23			inx	h
-  2617 115B 72			mov	m,d
-  2618 115C 23			inx	h
-  2619 115D EB			xchg
-  2620 115E 09			dad	b
-  2621 115F EB			xchg
-  2622 1160 3D			dcr	a
-  2623 1161 C2 59 11		jnz	X1159
-  2624 1164 32 55 21		sta	X2155
-  2625 1167 CD BF 11		call	X11bf
-  2626 116A 78			mov	a,b
-  2627 116B 32 56 21		sta	X2156
-  2628 116E 3C			inr	a
-  2629 116F 32 2B 21		sta	X212b
-  2630 1172 2A F2 20		lhld	X20f2
-  2631 1175 3E 17		mvi	a,17h
-  2632 1177 B8			cmp	b
-  2633 1178 CA 7E 11		jz	X117e
-  2634 117B 2A DE 20		lhld	X20de
-  2635 117E 7C		X117e:	mov	a,h
-  2636 117F F6 F0		ori	0f0h
-  2637 1181 67			mov	h,a
-  2638 1182 22 4E 20		shld	X204e
-  2639 1185 21 13 21		lxi	h,X2113
-  2640 1188 AF			xra	a
-  2641 1189 77		X1189:	mov	m,a
-  2642 118A 2C			inr	l
-  2643 118B 3C			inr	a
-  2644 118C 05			dcr	b
-  2645 118D F2 89 11		jp	X1189
-  2646 1190 C9			ret
+  2659 114C 21 C2 20	X114c:	lxi	h,X20c2
+  2660 114F 0C			inr	c
+  2661 1150 0C			inr	c
+  2662 1151 0C			inr	c
+  2663 1152 11 D0 22		lxi	d,X22d0
+  2664 1155 06 00		mvi	b,0
+  2665 1157 3E 19		mvi	a,19h
+  2666 1159 73		X1159:	mov	m,e
+  2667 115A 23			inx	h
+  2668 115B 72			mov	m,d
+  2669 115C 23			inx	h
+  2670 115D EB			xchg
+  2671 115E 09			dad	b
+  2672 115F EB			xchg
+  2673 1160 3D			dcr	a
+  2674 1161 C2 59 11		jnz	X1159
+  2675 1164 32 55 21		sta	X2155
+  2676 1167 CD BF 11		call	X11bf
+  2677 116A 78			mov	a,b
+  2678 116B 32 56 21		sta	X2156
+  2679 116E 3C			inr	a
+  2680 116F 32 2B 21		sta	X212b
+  2681 1172 2A F2 20		lhld	X20f2
+  2682 1175 3E 17		mvi	a,17h
+  2683 1177 B8			cmp	b
+  2684 1178 CA 7E 11		jz	X117e
+  2685 117B 2A DE 20		lhld	X20de
+  2686 117E 7C		X117e:	mov	a,h
+  2687 117F F6 F0		ori	0f0h
+  2688 1181 67			mov	h,a
+  2689 1182 22 4E 20		shld	scratch_start	; update [0x204e]
+  2690 1185 21 13 21		lxi	h,X2113
+  2691 1188 AF			xra	a
+  2692 1189 77		X1189:	mov	m,a
+  2693 118A 2C			inr	l
+  2694 118B 3C			inr	a
+  2695 118C 05			dcr	b
+  2696 118D F2 89 11		jp	X1189
+  2697 1190 C9			ret
 			
-  2648 1191 F3		X1191:	di
-  2649 1192 3A 7A 20		lda	X207a
-  2650 1195 B7			ora	a
-  2651 1196 CA A0 11		jz	X11a0
-  2652 1199 FB		X1199:	ei
-  2653 119A CD 88 14		call	X1488
-  2654 119D C3 91 11		jmp	X1191
+  2699 1191 F3		X1191:	di
+  2700 1192 3A 7A 20		lda	X207a
+  2701 1195 B7			ora	a
+  2702 1196 CA A0 11		jz	X11a0
+  2703 1199 FB		X1199:	ei
+  2704 119A CD 88 14		call	X1488
+  2705 119D C3 91 11		jmp	X1191
 			
-  2656 11A0 3A 65 20	X11a0:	lda	X2065
-  2657 11A3 B7			ora	a
-  2658 11A4 C2 B0 11		jnz	X11b0
-  2659 11A7 3A 51 20		lda	X2051
-  2660 11AA B7			ora	a
-  2661 11AB FB			ei
-  2662 11AC C8			rz
-  2663 11AD C3 99 11		jmp	X1199
+  2707 11A0 3A 65 20	X11a0:	lda	X2065
+  2708 11A3 B7			ora	a
+  2709 11A4 C2 B0 11		jnz	X11b0
+  2710 11A7 3A 51 20		lda	X2051
+  2711 11AA B7			ora	a
+  2712 11AB FB			ei
+  2713 11AC C8			rz
+  2714 11AD C3 99 11		jmp	X1199
 			
-  2665 11B0 3A 5B 20	X11b0:	lda	X205b
-  2666 11B3 21 5A 20		lxi	h,X205a
-  2667 11B6 86			add	m
-  2668 11B7 27			daa
-  2669 11B8 E6 0F		ani	0fh
-  2670 11BA CA 99 11		jz	X1199
-  2671 11BD FB			ei
-  2672 11BE C9			ret
+  2716 11B0 3A 5B 20	X11b0:	lda	X205b
+  2717 11B3 21 5A 20		lxi	h,X205a
+  2718 11B6 86			add	m
+  2719 11B7 27			daa
+  2720 11B8 E6 0F		ani	0fh
+  2721 11BA CA 99 11		jz	X1199
+  2722 11BD FB			ei
+  2723 11BE C9			ret
 			
-  2674 11BF E5		X11bf:	push	h
-  2675 11C0 06 17		mvi	b,17h
-  2676 11C2 3A A2 21		lda	X21a2
-  2677 11C5 21 C8 21		lxi	h,X21c8
-  2678 11C8 A6			ana	m
-  2679 11C9 E1			pop	h
-  2680 11CA C8			rz
-  2681 11CB 06 0D		mvi	b,0dh
-  2682 11CD C9			ret
+  2725 11BF E5		X11bf:	push	h
+  2726 11C0 06 17		mvi	b,17h
+  2727 11C2 3A A2 21		lda	X21a2
+  2728 11C5 21 C8 21		lxi	h,X21c8
+  2729 11C8 A6			ana	m
+  2730 11C9 E1			pop	h
+  2731 11CA C8			rz
+  2732 11CB 06 0D		mvi	b,0dh
+  2733 11CD C9			ret
 			
-  2684 11CE B7		X11ce:	ora	a
-  2685 11CF F2 E8 11		jp	X11e8
-  2686 11D2 21 04 20		lxi	h,X2004
-  2687 11D5 E5			push	h
-  2688 11D6 7E			mov	a,m
-  2689 11D7 23			inx	h
-  2690 11D8 6E			mov	l,m
-  2691 11D9 F6 F0		ori	0f0h
-  2692 11DB 67			mov	h,a
-  2693 11DC 22 4E 20		shld	X204e
-  2694 11DF CD 90 12		call	X1290
-  2695 11E2 E1			pop	h
-  2696 11E3 42			mov	b,d
-  2697 11E4 4B			mov	c,e
-  2698 11E5 C3 0A 12		jmp	X120a
+  2735 11CE B7		X11ce:	ora	a
+  2736 11CF F2 E8 11		jp	X11e8
+  2737 11D2 21 04 20		lxi	h,X2004
+  2738 11D5 E5			push	h
+  2739 11D6 7E			mov	a,m
+  2740 11D7 23			inx	h
+  2741 11D8 6E			mov	l,m
+  2742 11D9 F6 F0		ori	0f0h
+  2743 11DB 67			mov	h,a
+  2744 11DC 22 4E 20		shld	scratch_start	; update [0x204e]
+  2745 11DF CD 90 12		call	X1290
+  2746 11E2 E1			pop	h
+  2747 11E3 42			mov	b,d
+  2748 11E4 4B			mov	c,e
+  2749 11E5 C3 0A 12		jmp	X120a
 			
-  2700 11E8 CD 7F 12	X11e8:	call	X127f
-  2701 11EB CD 90 12		call	X1290
-  2702 11EE E5			push	h
-  2703 11EF D5			push	d
-  2704 11F0 EB			xchg
-  2705 11F1 CD 90 12		call	X1290
-  2706 11F4 42			mov	b,d
-  2707 11F5 4B			mov	c,e
-  2708 11F6 D1			pop	d
-  2709 11F7 7A			mov	a,d
-  2710 11F8 F6 F0		ori	0f0h
-  2711 11FA 67			mov	h,a
-  2712 11FB 6B			mov	l,e
-  2713 11FC 22 4E 20		shld	X204e
-  2714 11FF E1			pop	h
-  2715 1200 7C			mov	a,h
-  2716 1201 F6 9F		ori	9fh
-  2717 1203 3C			inr	a
-  2718 1204 C2 11 12		jnz	X1211
-  2719 1207 CD 99 12		call	X1299
-  2720 120A F3		X120a:	di
-  2721 120B 22 75 20		shld	X2075
-  2722 120E C3 28 12		jmp	X1228
+  2751 11E8 CD 7F 12	X11e8:	call	X127f
+  2752 11EB CD 90 12		call	X1290
+  2753 11EE E5			push	h
+  2754 11EF D5			push	d
+  2755 11F0 EB			xchg
+  2756 11F1 CD 90 12		call	X1290
+  2757 11F4 42			mov	b,d
+  2758 11F5 4B			mov	c,e
+  2759 11F6 D1			pop	d
+  2760 11F7 7A			mov	a,d
+  2761 11F8 F6 F0		ori	0f0h
+  2762 11FA 67			mov	h,a
+  2763 11FB 6B			mov	l,e
+  2764 11FC 22 4E 20		shld	scratch_start	; update [0x204e]
+  2765 11FF E1			pop	h
+  2766 1200 7C			mov	a,h
+  2767 1201 F6 9F		ori	9fh
+  2768 1203 3C			inr	a
+  2769 1204 C2 11 12		jnz	X1211
+  2770 1207 CD 99 12		call	X1299
+  2771 120A F3		X120a:	di
+  2772 120B 22 75 20		shld	X2075
+  2773 120E C3 28 12		jmp	X1228
 			
-  2724 1211 CD 9D 12	X1211:	call	X129d
-  2725 1214 3A 50 20		lda	X2050
-  2726 1217 0F			rrc
-  2727 1218 57			mov	d,a
-  2728 1219 CD DE 13		call	X13de
-  2729 121C 23			inx	h
-  2730 121D F3			di
-  2731 121E 22 75 20		shld	X2075
-  2732 1221 7A			mov	a,d
-  2733 1222 CD DE 13		call	X13de
-  2734 1225 70			mov	m,b
-  2735 1226 23			inx	h
-  2736 1227 71			mov	m,c
-  2737 1228 60		X1228:	mov	h,b
-  2738 1229 69			mov	l,c
-  2739 122A 22 79 21		shld	X2179
-  2740 122D FB			ei
-  2741 122E C9			ret
+  2775 1211 CD 9D 12	X1211:	call	X129d
+  2776 1214 3A 50 20		lda	X2050
+  2777 1217 0F			rrc
+  2778 1218 57			mov	d,a
+  2779 1219 CD DE 13		call	X13de
+  2780 121C 23			inx	h
+  2781 121D F3			di
+  2782 121E 22 75 20		shld	X2075
+  2783 1221 7A			mov	a,d
+  2784 1222 CD DE 13		call	X13de
+  2785 1225 70			mov	m,b
+  2786 1226 23			inx	h
+  2787 1227 71			mov	m,c
+  2788 1228 60		X1228:	mov	h,b
+  2789 1229 69			mov	l,c
+  2790 122A 22 79 21		shld	X2179
+  2791 122D FB			ei
+  2792 122E C9			ret
 			
-  2743 122F F5		X122f:	push	psw
-  2744 1230 CD BE 0F		call	X0fbe
-  2745 1233 F1			pop	psw
-  2746 1234 B7			ora	a
-  2747 1235 21 04 20		lxi	h,X2004
-  2748 1238 FA 48 12		jm	X1248
-  2749 123B CD 7F 12		call	X127f
-  2750 123E 7C			mov	a,h
-  2751 123F F6 9F		ori	9fh
-  2752 1241 3C			inr	a
-  2753 1242 C2 52 12		jnz	X1252
-  2754 1245 CD 99 12		call	X1299
-  2755 1248 F3		X1248:	di
-  2756 1249 22 58 20		shld	X2058
-  2757 124C 46			mov	b,m
-  2758 124D 23			inx	h
-  2759 124E 4E			mov	c,m
-  2760 124F C3 71 12		jmp	X1271
+  2794 122F F5		X122f:	push	psw
+  2795 1230 CD BE 0F		call	X0fbe
+  2796 1233 F1			pop	psw
+  2797 1234 B7			ora	a
+  2798 1235 21 04 20		lxi	h,X2004
+  2799 1238 FA 48 12		jm	X1248
+  2800 123B CD 7F 12		call	X127f
+  2801 123E 7C			mov	a,h
+  2802 123F F6 9F		ori	9fh
+  2803 1241 3C			inr	a
+  2804 1242 C2 52 12		jnz	X1252
+  2805 1245 CD 99 12		call	X1299
+  2806 1248 F3		X1248:	di
+  2807 1249 22 58 20		shld	X2058
+  2808 124C 46			mov	b,m
+  2809 124D 23			inx	h
+  2810 124E 4E			mov	c,m
+  2811 124F C3 71 12		jmp	X1271
 			
-  2762 1252 CD 9D 12	X1252:	call	X129d
-  2763 1255 3A 50 20		lda	X2050
-  2764 1258 0F			rrc
-  2765 1259 47			mov	b,a
-  2766 125A CD DE 13		call	X13de
-  2767 125D 23			inx	h
-  2768 125E F3			di
-  2769 125F 22 58 20		shld	X2058
-  2770 1262 78			mov	a,b
-  2771 1263 46			mov	b,m
-  2772 1264 23			inx	h
-  2773 1265 4E			mov	c,m
-  2774 1266 CD DE 13		call	X13de
-  2775 1269 EB			xchg
-  2776 126A 2A 4E 20		lhld	X204e
-  2777 126D EB			xchg
-  2778 126E 73			mov	m,e
-  2779 126F 2B			dcx	h
-  2780 1270 72			mov	m,d
-  2781 1271 2A 4E 20	X1271:	lhld	X204e
-  2782 1274 22 56 20		shld	X2056
-  2783 1277 CD 99 12		call	X1299
-  2784 127A 70			mov	m,b
-  2785 127B 23			inx	h
-  2786 127C 71			mov	m,c
-  2787 127D FB			ei
-  2788 127E C9			ret
+  2813 1252 CD 9D 12	X1252:	call	X129d
+  2814 1255 3A 50 20		lda	X2050
+  2815 1258 0F			rrc
+  2816 1259 47			mov	b,a
+  2817 125A CD DE 13		call	X13de
+  2818 125D 23			inx	h
+  2819 125E F3			di
+  2820 125F 22 58 20		shld	X2058
+  2821 1262 78			mov	a,b
+  2822 1263 46			mov	b,m
+  2823 1264 23			inx	h
+  2824 1265 4E			mov	c,m
+  2825 1266 CD DE 13		call	X13de
+  2826 1269 EB			xchg
+  2827 126A 2A 4E 20		lhld	scratch_start	; load [0x204e]
+  2828 126D EB			xchg
+  2829 126E 73			mov	m,e
+  2830 126F 2B			dcx	h
+  2831 1270 72			mov	m,d
+  2832 1271 2A 4E 20	X1271:	lhld	scratch_start	; load [0x204e]
+  2833 1274 22 56 20		shld	X2056
+  2834 1277 CD 99 12		call	X1299
+  2835 127A 70			mov	m,b
+  2836 127B 23			inx	h
+  2837 127C 71			mov	m,c
+  2838 127D FB			ei
+  2839 127E C9			ret
 			
-  2790 127F 3C		X127f:	inr	a
-  2791 1280 47			mov	b,a
-  2792 1281 21 04 20		lxi	h,X2004
-  2793 1284 7E		X1284:	mov	a,m
-  2794 1285 23			inx	h
-  2795 1286 6E			mov	l,m
-  2796 1287 67			mov	h,a
-  2797 1288 05			dcr	b
-  2798 1289 C8			rz
-  2799 128A CD 99 12		call	X1299
-  2800 128D C3 84 12		jmp	X1284
+  2841 127F 3C		X127f:	inr	a
+  2842 1280 47			mov	b,a
+  2843 1281 21 04 20		lxi	h,X2004
+  2844 1284 7E		X1284:	mov	a,m
+  2845 1285 23			inx	h
+  2846 1286 6E			mov	l,m
+  2847 1287 67			mov	h,a
+  2848 1288 05			dcr	b
+  2849 1289 C8			rz
+  2850 128A CD 99 12		call	X1299
+  2851 128D C3 84 12		jmp	X1284
 			
-  2802 1290 E5		X1290:	push	h
-  2803 1291 CD 99 12		call	X1299
-  2804 1294 56			mov	d,m
-  2805 1295 23			inx	h
-  2806 1296 5E			mov	e,m
-  2807 1297 E1			pop	h
-  2808 1298 C9			ret
+  2853 1290 E5		X1290:	push	h
+  2854 1291 CD 99 12		call	X1299
+  2855 1294 56			mov	d,m
+  2856 1295 23			inx	h
+  2857 1296 5E			mov	e,m
+  2858 1297 E1			pop	h
+  2859 1298 C9			ret
 			
-  2810 1299 CD DB 13	X1299:	call	X13db
-  2811 129C 23			inx	h
-  2812 129D 7C		X129d:	mov	a,h
-  2813 129E E6 0F		ani	0fh
-  2814 12A0 F6 20		ori	20h
-  2815 12A2 67			mov	h,a
-  2816 12A3 C9			ret
+  2861 1299 CD DB 13	X1299:	call	X13db
+  2862 129C 23			inx	h
+  2863 129D 7C		X129d:	mov	a,h
+  2864 129E E6 0F		ani	0fh
+  2865 12A0 F6 20		ori	20h
+  2866 12A2 67			mov	h,a
+  2867 12A3 C9			ret
 			
-  2818 12A4 CD B0 12		call	X12b0
-  2819 12A7 50			mov	d,b
-  2820 12A8 CD B0 12		call	X12b0
-  2821 12AB			db	30h
+  2869 12A4 CD B0 12		call	X12b0
+  2870 12A7 50			mov	d,b
+  2871 12A8 CD B0 12		call	X12b0
+  2872 12AB			db	30h
             30 
-  2822 12AC CD B0 12		call	X12b0
-  2823 12AF			db	10h
+  2873 12AC CD B0 12		call	X12b0
+  2874 12AF			db	10h
             10 
-  2824 12B0 CD 91 11	X12b0:	call	X1191
-  2825 12B3 21 13 21		lxi	h,X2113
-  2826 12B6 3A F9 20		lda	X20f9
-  2827 12B9 85			add	l
-  2828 12BA 6F			mov	l,a
-  2829 12BB 7E			mov	a,m
-  2830 12BC F6 80		ori	80h
-  2831 12BE 77			mov	m,a
-  2832 12BF CD 8D 13		call	X138d
-  2833 12C2 CD C3 13		call	X13c3
-  2834 12C5 E1			pop	h
-  2835 12C6 7E			mov	a,m
-  2836 12C7 CD 95 13		call	X1395
-  2837 12CA 3A 53 21		lda	X2153
-  2838 12CD 21 F8 20		lxi	h,X20f8
-  2839 12D0 B7			ora	a
-  2840 12D1 1F			rar
-  2841 12D2 BE			cmp	m
-  2842 12D3 D2 12 10		jnc	X1012
-  2843 12D6 21 F4 20		lxi	h,X20f4
-  2844 12D9 22 F6 20		shld	X20f6
-  2845 12DC C3 12 10		jmp	X1012
+  2875 12B0 CD 91 11	X12b0:	call	X1191
+  2876 12B3 21 13 21		lxi	h,X2113
+  2877 12B6 3A F9 20		lda	X20f9
+  2878 12B9 85			add	l
+  2879 12BA 6F			mov	l,a
+  2880 12BB 7E			mov	a,m
+  2881 12BC F6 80		ori	80h
+  2882 12BE 77			mov	m,a
+  2883 12BF CD 8D 13		call	X138d
+  2884 12C2 CD C3 13		call	X13c3
+  2885 12C5 E1			pop	h
+  2886 12C6 7E			mov	a,m
+  2887 12C7 CD 95 13		call	X1395
+  2888 12CA 3A 53 21		lda	X2153
+  2889 12CD 21 F8 20		lxi	h,X20f8
+  2890 12D0 B7			ora	a
+  2891 12D1 1F			rar
+  2892 12D2 BE			cmp	m
+  2893 12D3 D2 12 10		jnc	X1012
+  2894 12D6 21 F4 20		lxi	h,X20f4
+  2895 12D9 22 F6 20		shld	X20f6
+  2896 12DC C3 12 10		jmp	X1012
 			
-  2847 12DF 3A 30 21		lda	X2130
-  2848 12E2 FE 02		cpi	2
-  2849 12E4 D0			rnc
-  2850 12E5 32 76 21		sta	X2176
-  2851 12E8 21 72 21	X12e8:	lxi	h,X2172
-  2852 12EB 7E			mov	a,m
-  2853 12EC F6 02		ori	2
-  2854 12EE 77			mov	m,a
-  2855 12EF C9			ret
+  2898 12DF 3A 30 21		lda	X2130
+  2899 12E2 FE 02		cpi	2
+  2900 12E4 D0			rnc
+  2901 12E5 32 76 21		sta	X2176
+  2902 12E8 21 72 21	X12e8:	lxi	h,X2172
+  2903 12EB 7E			mov	a,m
+  2904 12EC F6 02		ori	2
+  2905 12EE 77			mov	m,a
+  2906 12EF C9			ret
 			
-  2857 12F0 3E FD		mvi	a,0fdh
-  2858 12F2 CD BF 0D		call	X0dbf
-  2859 12F5 3A 76 21		lda	X2176
-  2860 12F8 F6 32		ori	32h
-  2861 12FA CD B9 0D		call	X0db9
-  2862 12FD 3A A9 21		lda	X21a9
-  2863 1300 F5			push	psw
-  2864 1301 E6 C0		ani	0c0h
-  2865 1303 F6 18		ori	18h
-  2866 1305 87			add	a
-  2867 1306 3C			inr	a
-  2868 1307 F2 10 13		jp	X1310
-  2869 130A 1F			rar
-  2870 130B 07			rlc
-  2871 130C F6 04		ori	4
-  2872 130E E6 7F		ani	7fh
-  2873 1310 CD B9 0D	X1310:	call	X0db9
-  2874 1313 06 31		mvi	b,31h
-  2875 1315 F1			pop	psw
-  2876 1316 E6 20		ani	20h
-  2877 1318 C2 1C 13		jnz	X131c
-  2878 131B 04			inr	b
-  2879 131C 78		X131c:	mov	a,b
-  2880 131D CD B9 0D		call	X0db9
-  2881 1320 3A AB 21		lda	X21ab
-  2882 1323 0F			rrc
-  2883 1324 CD 7A 0D		call	X0d7a
-  2884 1327 CD BB 0D		call	X0dbb
-  2885 132A 3A AC 21		lda	X21ac
-  2886 132D 0F			rrc
-  2887 132E CD 7A 0D		call	X0d7a
-  2888 1331 CD BB 0D		call	X0dbb
-  2889 1334 3E 31		mvi	a,31h
-  2890 1336 CD B9 0D		call	X0db9
-  2891 1339 3A AA 21		lda	X21aa
-  2892 133C E6 F0		ani	0f0h
-  2893 133E 0F			rrc
-  2894 133F 0F			rrc
-  2895 1340 0F			rrc
-  2896 1341 0F			rrc
-  2897 1342 CD 7A 0D		call	X0d7a
-  2898 1345 36 F8		mvi	m,0f8h
-  2899 1347 C3 F3 0E		jmp	X0ef3
+  2908 12F0 3E FD		mvi	a,0fdh
+  2909 12F2 CD BF 0D		call	X0dbf
+  2910 12F5 3A 76 21		lda	X2176
+  2911 12F8 F6 32		ori	32h
+  2912 12FA CD B9 0D		call	X0db9
+  2913 12FD 3A A9 21		lda	X21a9
+  2914 1300 F5			push	psw
+  2915 1301 E6 C0		ani	0c0h
+  2916 1303 F6 18		ori	18h
+  2917 1305 87			add	a
+  2918 1306 3C			inr	a
+  2919 1307 F2 10 13		jp	X1310
+  2920 130A 1F			rar
+  2921 130B 07			rlc
+  2922 130C F6 04		ori	4
+  2923 130E E6 7F		ani	7fh
+  2924 1310 CD B9 0D	X1310:	call	X0db9
+  2925 1313 06 31		mvi	b,31h
+  2926 1315 F1			pop	psw
+  2927 1316 E6 20		ani	20h
+  2928 1318 C2 1C 13		jnz	X131c
+  2929 131B 04			inr	b
+  2930 131C 78		X131c:	mov	a,b
+  2931 131D CD B9 0D		call	X0db9
+  2932 1320 3A AB 21		lda	X21ab
+  2933 1323 0F			rrc
+  2934 1324 CD 7A 0D		call	X0d7a
+  2935 1327 CD BB 0D		call	X0dbb
+  2936 132A 3A AC 21		lda	X21ac
+  2937 132D 0F			rrc
+  2938 132E CD 7A 0D		call	X0d7a
+  2939 1331 CD BB 0D		call	X0dbb
+  2940 1334 3E 31		mvi	a,31h
+  2941 1336 CD B9 0D		call	X0db9
+  2942 1339 3A AA 21		lda	X21aa
+  2943 133C E6 F0		ani	0f0h
+  2944 133E 0F			rrc
+  2945 133F 0F			rrc
+  2946 1340 0F			rrc
+  2947 1341 0F			rrc
+  2948 1342 CD 7A 0D		call	X0d7a
+  2949 1345 36 F8		mvi	m,0f8h
+  2950 1347 C3 F3 0E		jmp	X0ef3
 			
-  2901 134A 21 57 21	X134a:	lxi	h,X2157
-  2902 134D 7E			mov	a,m
-  2903 134E B7			ora	a
-  2904 134F C8			rz
-  2905 1350 CD 91 11		call	X1191
-  2906 1353 21 13 21		lxi	h,X2113
-  2907 1356 3A F9 20		lda	X20f9
-  2908 1359 85			add	l
-  2909 135A 6F			mov	l,a
-  2910 135B 7E			mov	a,m
-  2911 135C E6 7F		ani	7fh
-  2912 135E 77			mov	m,a
-  2913 135F CD 8D 13		call	X138d
-  2914 1362 3A 50 20		lda	X2050
-  2915 1365 0F			rrc
-  2916 1366 47			mov	b,a
-  2917 1367 CD DE 13		call	X13de
-  2918 136A AF			xra	a
-  2919 136B 77		X136b:	mov	m,a
-  2920 136C 23			inx	h
-  2921 136D 05			dcr	b
-  2922 136E C2 6B 13		jnz	X136b
-  2923 1371 3E F0		mvi	a,0f0h
-  2924 1373 32 0E 21		sta	X210e
-  2925 1376 CD 95 13		call	X1395
-  2926 1379 AF			xra	a
-  2927 137A 32 57 21		sta	X2157
-  2928 137D C3 36 16		jmp	X1636
+  2952 134A 21 57 21	X134a:	lxi	h,X2157
+  2953 134D 7E			mov	a,m
+  2954 134E B7			ora	a
+  2955 134F C8			rz
+  2956 1350 CD 91 11		call	X1191
+  2957 1353 21 13 21		lxi	h,X2113
+  2958 1356 3A F9 20		lda	X20f9
+  2959 1359 85			add	l
+  2960 135A 6F			mov	l,a
+  2961 135B 7E			mov	a,m
+  2962 135C E6 7F		ani	7fh
+  2963 135E 77			mov	m,a
+  2964 135F CD 8D 13		call	X138d
+  2965 1362 3A 50 20		lda	X2050
+  2966 1365 0F			rrc
+  2967 1366 47			mov	b,a
+  2968 1367 CD DE 13		call	X13de
+  2969 136A AF			xra	a
+  2970 136B 77		X136b:	mov	m,a
+  2971 136C 23			inx	h
+  2972 136D 05			dcr	b
+  2973 136E C2 6B 13		jnz	X136b
+  2974 1371 3E F0		mvi	a,0f0h
+  2975 1373 32 0E 21		sta	X210e
+  2976 1376 CD 95 13		call	X1395
+  2977 1379 AF			xra	a
+  2978 137A 32 57 21		sta	X2157
+  2979 137D C3 36 16		jmp	X1636
 			
-  2930 1380 3A F9 20	X1380:	lda	X20f9
-  2931 1383 CD E6 13		call	X13e6
-  2932 1386 21 C2 20	X1386:	lxi	h,X20c2
-  2933 1389 87			add	a
-  2934 138A 85			add	l
-  2935 138B 6F			mov	l,a
-  2936 138C C9			ret
+  2981 1380 3A F9 20	X1380:	lda	X20f9
+  2982 1383 CD E6 13		call	X13e6
+  2983 1386 21 C2 20	X1386:	lxi	h,X20c2
+  2984 1389 87			add	a
+  2985 138A 85			add	l
+  2986 138B 6F			mov	l,a
+  2987 138C C9			ret
 			
-  2938 138D CD 80 13	X138d:	call	X1380
-  2939 1390 7E		X1390:	mov	a,m
-  2940 1391 23			inx	h
-  2941 1392 66			mov	h,m
-  2942 1393 6F			mov	l,a
-  2943 1394 C9			ret
+  2989 138D CD 80 13	X138d:	call	X1380
+  2990 1390 7E		X1390:	mov	a,m
+  2991 1391 23			inx	h
+  2992 1392 66			mov	h,m
+  2993 1393 6F			mov	l,a
+  2994 1394 C9			ret
 			
-  2945 1395 E6 70	X1395:	ani	70h
-  2946 1397 47			mov	b,a
-  2947 1398 3A F9 20		lda	X20f9
-  2948 139B 3D			dcr	a
-  2949 139C 21 04 20		lxi	h,X2004
-  2950 139F FA BD 13		jm	X13bd
-  2951 13A2 CD E6 13		call	X13e6
-  2952 13A5 57			mov	d,a
-  2953 13A6 E6 7F		ani	7fh
-  2954 13A8 CD 86 13		call	X1386
-  2955 13AB CD 90 13		call	X1390
-  2956 13AE 3A 50 20		lda	X2050
-  2957 13B1 0F			rrc
-  2958 13B2 5F			mov	e,a
-  2959 13B3 23			inx	h
-  2960 13B4 14			inr	d
-  2961 13B5 15			dcr	d
-  2962 13B6 16 00		mvi	d,0
-  2963 13B8 19			dad	d
-  2964 13B9 FC BD 13		cm	X13bd
-  2965 13BC 19			dad	d
-  2966 13BD 7E		X13bd:	mov	a,m
-  2967 13BE E6 8F		ani	8fh
-  2968 13C0 B0			ora	b
-  2969 13C1 77			mov	m,a
-  2970 13C2 C9			ret
+  2996 1395 E6 70	X1395:	ani	70h
+  2997 1397 47			mov	b,a
+  2998 1398 3A F9 20		lda	X20f9
+  2999 139B 3D			dcr	a
+  3000 139C 21 04 20		lxi	h,X2004
+  3001 139F FA BD 13		jm	X13bd
+  3002 13A2 CD E6 13		call	X13e6
+  3003 13A5 57			mov	d,a
+  3004 13A6 E6 7F		ani	7fh
+  3005 13A8 CD 86 13		call	X1386
+  3006 13AB CD 90 13		call	X1390
+  3007 13AE 3A 50 20		lda	X2050
+  3008 13B1 0F			rrc
+  3009 13B2 5F			mov	e,a
+  3010 13B3 23			inx	h
+  3011 13B4 14			inr	d
+  3012 13B5 15			dcr	d
+  3013 13B6 16 00		mvi	d,0
+  3014 13B8 19			dad	d
+  3015 13B9 FC BD 13		cm	X13bd
+  3016 13BC 19			dad	d
+  3017 13BD 7E		X13bd:	mov	a,m
+  3018 13BE E6 8F		ani	8fh
+  3019 13C0 B0			ora	b
+  3020 13C1 77			mov	m,a
+  3021 13C2 C9			ret
 			
-  2972 13C3 3A 50 20	X13c3:	lda	X2050
-  2973 13C6 0F			rrc
-  2974 13C7 54			mov	d,h
-  2975 13C8 5D			mov	e,l
-  2976 13C9 CD DE 13		call	X13de
-  2977 13CC EB			xchg
-  2978 13CD CD DB 13		call	X13db
-  2979 13D0 06 03		mvi	b,3
-  2980 13D2 7E		X13d2:	mov	a,m
-  2981 13D3 12			stax	d
-  2982 13D4 13			inx	d
-  2983 13D5 23			inx	h
-  2984 13D6 05			dcr	b
-  2985 13D7 C2 D2 13		jnz	X13d2
-  2986 13DA C9			ret
+  3023 13C3 3A 50 20	X13c3:	lda	X2050
+  3024 13C6 0F			rrc
+  3025 13C7 54			mov	d,h
+  3026 13C8 5D			mov	e,l
+  3027 13C9 CD DE 13		call	X13de
+  3028 13CC EB			xchg
+  3029 13CD CD DB 13		call	X13db
+  3030 13D0 06 03		mvi	b,3
+  3031 13D2 7E		X13d2:	mov	a,m
+  3032 13D3 12			stax	d
+  3033 13D4 13			inx	d
+  3034 13D5 23			inx	h
+  3035 13D6 05			dcr	b
+  3036 13D7 C2 D2 13		jnz	X13d2
+  3037 13DA C9			ret
 			
-  2988 13DB 3A 50 20	X13db:	lda	X2050
-  2989 13DE 85		X13de:	add	l
-  2990 13DF 6F			mov	l,a
-  2991 13E0 D0			rnc
-  2992 13E1 24			inr	h
-  2993 13E2 C9			ret
+  3039 13DB 3A 50 20	X13db:	lda	X2050
+  3040 13DE 85		X13de:	add	l
+  3041 13DF 6F			mov	l,a
+  3042 13E0 D0			rnc
+  3043 13E1 24			inr	h
+  3044 13E2 C9			ret
 			
-  2995 13E3 3A F9 20	X13e3:	lda	X20f9
-  2996 13E6 21 13 21	X13e6:	lxi	h,X2113
-  2997 13E9 85			add	l
-  2998 13EA 6F			mov	l,a
-  2999 13EB 7E			mov	a,m
-  3000 13EC C9			ret
+  3046 13E3 3A F9 20	X13e3:	lda	X20f9
+  3047 13E6 21 13 21	X13e6:	lxi	h,X2113
+  3048 13E9 85			add	l
+  3049 13EA 6F			mov	l,a
+  3050 13EB 7E			mov	a,m
+  3051 13EC C9			ret
 			
-  3002 13ED 0E 00		mvi	c,0
-  3003 13EF C3 F4 13		jmp	X13f4
+  3053 13ED 0E 00		mvi	c,0
+  3054 13EF C3 F4 13		jmp	X13f4
 			
-  3005 13F2 0E FF		mvi	c,0ffh
-  3006 13F4 3A B8 21	X13f4:	lda	X21b8
-  3007 13F7 B7			ora	a
-  3008 13F8 21 26 14		lxi	h,X1426
-  3009 13FB CA 04 14		jz	X1404
-  3010 13FE FE 3F		cpi	3fh
-  3011 1400 C0			rnz
-  3012 1401 21 0A 14		lxi	h,X140a
-  3013 1404 78		X1404:	mov	a,b
-  3014 1405 41			mov	b,c
-  3015 1406 CD FF 09		call	X09ff
-  3016 1409 C9			ret
+  3056 13F2 0E FF		mvi	c,0ffh
+  3057 13F4 3A B8 21	X13f4:	lda	X21b8
+  3058 13F7 B7			ora	a
+  3059 13F8 21 26 14		lxi	h,X1426
+  3060 13FB CA 04 14		jz	X1404
+  3061 13FE FE 3F		cpi	3fh
+  3062 1400 C0			rnz
+  3063 1401 21 0A 14		lxi	h,X140a
+  3064 1404 78		X1404:	mov	a,b
+  3065 1405 41			mov	b,c
+  3066 1406 CD FF 09		call	X09ff
+  3067 1409 C9			ret
 			
-  3018 140A 01 2A 14	X140a:	lxi	b,X142a
-  3019 140D 02			stax	b
-  3020 140E 2F			cma
-  3021 140F 14			inr	d
-  3022 1410 03			inx	b
-  3023 1411 57			mov	d,a
-  3024 1412 14			inr	d
-  3025 1413 04			inr	b
-  3026 1414 47			mov	b,a
-  3027 1415 14			inr	d
-  3028 1416 05			dcr	b
-  3029 1417 4E			mov	c,m
-  3030 1418 14			inr	d
-  3031 1419 06 3F		mvi	b,3fh
-  3032 141B 14			inr	d
-  3033 141C 07			rlc
-  3034 141D 66			mov	h,m
-  3035 141E 14			inr	d
-  3036 141F			db	8
+  3069 140A 01 2A 14	X140a:	lxi	b,X142a
+  3070 140D 02			stax	b
+  3071 140E 2F			cma
+  3072 140F 14			inr	d
+  3073 1410 03			inx	b
+  3074 1411 57			mov	d,a
+  3075 1412 14			inr	d
+  3076 1413 04			inr	b
+  3077 1414 47			mov	b,a
+  3078 1415 14			inr	d
+  3079 1416 05			dcr	b
+  3080 1417 4E			mov	c,m
+  3081 1418 14			inr	d
+  3082 1419 06 3F		mvi	b,3fh
+  3083 141B 14			inr	d
+  3084 141C 07			rlc
+  3085 141D 66			mov	h,m
+  3086 141E 14			inr	d
+  3087 141F			db	8
             08 
-  3037 1420 5F			mov	e,a
-  3038 1421 14			inr	d
-  3039 1422 09			dad	b
-  3040 1423 6D			mov	l,l
-  3041 1424 14			inr	d
-  3042 1425 00			nop
-  3043 1426 14		X1426:	inr	d
-  3044 1427			db	38h
+  3088 1420 5F			mov	e,a
+  3089 1421 14			inr	d
+  3090 1422 09			dad	b
+  3091 1423 6D			mov	l,l
+  3092 1424 14			inr	d
+  3093 1425 00			nop
+  3094 1426 14		X1426:	inr	d
+  3095 1427			db	38h
             38 
-  3045 1428 14			inr	d
-  3046 1429 00			nop
-  3047 142A 21 BC 21	X142a:	lxi	h,X21bc
-  3048 142D 70			mov	m,b
-  3049 142E C9			ret
+  3096 1428 14			inr	d
+  3097 1429 00			nop
+  3098 142A 21 BC 21	X142a:	lxi	h,X21bc
+  3099 142D 70			mov	m,b
+  3100 142E C9			ret
 			
-  3051 142F CD 76 14		call	X1476
-  3052 1432 A7			ana	a
-  3053 1433 21 20 C3		lxi	h,Xc320
-  3054 1436 F2 0B CD		jp	Xcd0b
-  3055 1439 76			hlt
+  3102 142F CD 76 14		call	X1476
+  3103 1432 A7			ana	a
+  3104 1433 21 20 C3		lxi	h,Xc320
+  3105 1436 F2 0B CD		jp	Xcd0b
+  3106 1439 76			hlt
 			
-  3057 143A 14			inr	d
-  3058 143B A8			xra	b
-  3059 143C 21 20 C9		lxi	h,Xc920
-  3060 143F 21 01 21		lxi	h,X2101
-  3061 1442 70			mov	m,b
-  3062 1443 CD 48 18		call	X1848
-  3063 1446 C9			ret
+  3108 143A 14			inr	d
+  3109 143B A8			xra	b
+  3110 143C 21 20 C9		lxi	h,Xc920
+  3111 143F 21 01 21		lxi	h,X2101
+  3112 1442 70			mov	m,b
+  3113 1443 CD 48 18		call	X1848
+  3114 1446 C9			ret
 			
-  3065 1447 CD 76 14		call	X1476
-  3066 144A A6			ana	m
-  3067 144B 21 80 C9		lxi	h,Xc980
-  3068 144E CD 76 14		call	X1476
-  3069 1451 A6			ana	m
-  3070 1452 21 20 C3		lxi	h,Xc320
-  3071 1455 6B			mov	l,e
-  3072 1456 03			inx	b
-  3073 1457 21 A2 21		lxi	h,X21a2
-  3074 145A 70			mov	m,b
-  3075 145B CD 81 03		call	X0381
-  3076 145E C9			ret
+  3116 1447 CD 76 14		call	X1476
+  3117 144A A6			ana	m
+  3118 144B 21 80 C9		lxi	h,Xc980
+  3119 144E CD 76 14		call	X1476
+  3120 1451 A6			ana	m
+  3121 1452 21 20 C3		lxi	h,Xc320
+  3122 1455 6B			mov	l,e
+  3123 1456 03			inx	b
+  3124 1457 21 A2 21		lxi	h,X21a2
+  3125 145A 70			mov	m,b
+  3126 145B CD 81 03		call	X0381
+  3127 145E C9			ret
 			
-  3078 145F CD 76 14		call	X1476
-  3079 1462 A6			ana	m
-  3080 1463 21 40 C9		lxi	h,Xc940
-  3081 1466 CD 76 14		call	X1476
-  3082 1469 A8			xra	b
-  3083 146A 21 40 C9		lxi	h,Xc940
-  3084 146D CD 76 14		call	X1476
-  3085 1470 A8			xra	b
-  3086 1471 21 10 C3		lxi	h,Xc310
-  3087 1474 42			mov	b,d
-  3088 1475 03			inx	b
-  3089 1476 E1		X1476:	pop	h
-  3090 1477 5E			mov	e,m
-  3091 1478 23			inx	h
-  3092 1479 56			mov	d,m
-  3093 147A 23			inx	h
-  3094 147B 7E			mov	a,m
-  3095 147C 23			inx	h
-  3096 147D EB			xchg
-  3097 147E 4F			mov	c,a
-  3098 147F 2F			cma
-  3099 1480 A6			ana	m
-  3100 1481 77			mov	m,a
-  3101 1482 78			mov	a,b
-  3102 1483 A1			ana	c
-  3103 1484 B6			ora	m
-  3104 1485 77			mov	m,a
-  3105 1486 EB			xchg
-  3106 1487 E9			pchl
+  3129 145F CD 76 14		call	X1476
+  3130 1462 A6			ana	m
+  3131 1463 21 40 C9		lxi	h,Xc940
+  3132 1466 CD 76 14		call	X1476
+  3133 1469 A8			xra	b
+  3134 146A 21 40 C9		lxi	h,Xc940
+  3135 146D CD 76 14		call	X1476
+  3136 1470 A8			xra	b
+  3137 1471 21 10 C3		lxi	h,Xc310
+  3138 1474 42			mov	b,d
+  3139 1475 03			inx	b
+  3140 1476 E1		X1476:	pop	h
+  3141 1477 5E			mov	e,m
+  3142 1478 23			inx	h
+  3143 1479 56			mov	d,m
+  3144 147A 23			inx	h
+  3145 147B 7E			mov	a,m
+  3146 147C 23			inx	h
+  3147 147D EB			xchg
+  3148 147E 4F			mov	c,a
+  3149 147F 2F			cma
+  3150 1480 A6			ana	m
+  3151 1481 77			mov	m,a
+  3152 1482 78			mov	a,b
+  3153 1483 A1			ana	c
+  3154 1484 B6			ora	m
+  3155 1485 77			mov	m,a
+  3156 1486 EB			xchg
+  3157 1487 E9			pchl
 			
-  3108 1488 CD 93 14	X1488:	call	X1493
-  3109 148B E6 10		ani	10h
-  3110 148D CC AA 06		cz	X06aa
-  3111 1490 C3 59 0E		jmp	X0e59
+  3159 1488 CD 93 14	X1488:	call	X1493
+  3160 148B E6 10		ani	10h
+  3161 148D CC AA 06		cz	X06aa
+  3162 1490 C3 59 0E		jmp	X0e59
 			;;
 			;; SUBROUTINE A
 			;;
-  3115 1493 DB 42	X1493:	in	42h		;; Read flags buffer
-  3116 1495 E6 80		ani	80h		;; check if transmit buffer is empty
-  3117 1497 C8			rz			;; if zero, return
-  3118 1498 21 44 21		lxi	h,X2144		;; HL = 0x2144
-  3119 149B 7E			mov	a,m		;; Load from 2144
-  3120 149C B7			ora	a		;; Check if zero
-  3121 149D CA A2 14		jz	X14a2		;;
-  3122 14A0 3E 10		mvi	a,10h		;; If not, A = 10 (else A is zero)
-  3123 14A2 21 A5 21	X14a2:	lxi	h,X21a5		;;
-  3124 14A5 B6			ora	m		;; or bits from 0x21a5
-  3125 14A6 21 45 21		lxi	h,X2145		;;
-  3126 14A9 B6			ora	m		;; or bits from 0x2145
-  3127 14AA 23			inx	h		;;
-  3128 14AB B6			ora	m		;; ... and 0x2146
-  3129 14AC 23			inx	h		;;
-  3130 14AD B6			ora	m		;; ... and 0x2147
-  3131 14AE 36 00		mvi	m,0		;; zero 0x2147
-  3132 14B0 23			inx	h		;;
-  3133 14B1 B6			ora	m		;; ... and 0x2148
-  3134 14B2 36 00		mvi	m,0		;; zero 0x2148
-  3135 14B4 D3 82		out	82h		;; Write to keyboard buffer
-  3136 14B6 21 74 20		lxi	h,X2074		;;
-  3137 14B9 34			inr	m		;; Increment what's at 0x2074
-  3138 14BA 3A 77 20		lda	X2077		;; load what's at 0x2077
-  3139 14BD B7			ora	a		;; return if it's not zero
-  3140 14BE C0			rnz			;;
-  3141 14BF 3A 65 20		lda	X2065		;; A =  0x2065
-  3142 14C2 21 51 20		lxi	h,X2051		;;
-  3143 14C5 B6			ora	m		;; return if [0x2065] | [0x2051] != 0
-  3144 14C6 C0			rnz
-  3145 14C7 2A 2D 21		lhld	X212d
-  3146 14CA 2B			dcx	h
-  3147 14CB 7C			mov	a,h
-  3148 14CC B5			ora	l
-  3149 14CD CA D4 14		jz	X14d4
-  3150 14D0 22 2D 21		shld	X212d
-  3151 14D3 C9			ret
+  3166 1493 DB 42	X1493:	in	42h		;; Read flags buffer
+  3167 1495 E6 80		ani	80h		;; check if transmit buffer is empty
+  3168 1497 C8			rz			;; if zero, return
+  3169 1498 21 44 21		lxi	h,X2144		;; HL = 0x2144
+  3170 149B 7E			mov	a,m		;; Load from 2144
+  3171 149C B7			ora	a		;; Check if zero
+  3172 149D CA A2 14		jz	X14a2		;;
+  3173 14A0 3E 10		mvi	a,10h		;; If not, A = 10 (else A is zero)
+  3174 14A2 21 A5 21	X14a2:	lxi	h,X21a5		;;
+  3175 14A5 B6			ora	m		;; or bits from 0x21a5
+  3176 14A6 21 45 21		lxi	h,X2145		;;
+  3177 14A9 B6			ora	m		;; or bits from 0x2145
+  3178 14AA 23			inx	h		;;
+  3179 14AB B6			ora	m		;; ... and 0x2146
+  3180 14AC 23			inx	h		;;
+  3181 14AD B6			ora	m		;; ... and 0x2147
+  3182 14AE 36 00		mvi	m,0		;; zero 0x2147
+  3183 14B0 23			inx	h		;;
+  3184 14B1 B6			ora	m		;; ... and 0x2148
+  3185 14B2 36 00		mvi	m,0		;; zero 0x2148
+  3186 14B4 D3 82		out	82h		;; Write to keyboard buffer
+  3187 14B6 21 74 20		lxi	h,X2074		;;
+  3188 14B9 34			inr	m		;; Increment what's at 0x2074
+  3189 14BA 3A 77 20		lda	X2077		;; load what's at 0x2077
+  3190 14BD B7			ora	a		;; return if it's not zero
+  3191 14BE C0			rnz			;;
+  3192 14BF 3A 65 20		lda	X2065		;; A = [0x2065]
+  3193 14C2 21 51 20		lxi	h,X2051		;;
+  3194 14C5 B6			ora	m		;; return if [0x2065] | [0x2051] != 0
+  3195 14C6 C0			rnz
 			
-  3153 14D4 3A BA 21	X14d4:	lda	X21ba
-  3154 14D7 EE FF		xri	0ffh
-  3155 14D9 32 BA 21		sta	X21ba
-  3156 14DC 21 12 02		lxi	h,X0212
-  3157 14DF C2 E5 14		jnz	X14e5
-  3158 14E2 21 09 01		lxi	h,X0109
-  3159 14E5 22 2D 21	X14e5:	shld	X212d
-  3160 14E8 2A F6 20		lhld	X20f6
-  3161 14EB 46			mov	b,m
-  3162 14EC 3A 59 21		lda	X2159
-  3163 14EF A8			xra	b
-  3164 14F0 77			mov	m,a
-  3165 14F1 11 00 10		lxi	d,X1000
-  3166 14F4 19			dad	d
-  3167 14F5 3A 5A 21		lda	X215a
-  3168 14F8 AE			xra	m
-  3169 14F9 77			mov	m,a
-  3170 14FA C9			ret
+  3197 14C7 2A 2D 21		lhld	cursor_countdn	; HL = cursor countdown from [0x212d]
+  3198 14CA 2B			dcx	h
+  3199 14CB 7C			mov	a,h
+  3200 14CC B5			ora	l
+  3201 14CD CA D4 14		jz	X14d4
+  3202 14D0 22 2D 21		shld	cursor_countdn	; update cursor countdown with decremented value
+  3203 14D3 C9			ret
+			;
+			; Cursor countdown reached zero, time to invert the cursor;
+			; note that the cursor is on (visible) twice as long as it's off
+			;
+  3208 14D4 3A BA 21	X14d4:	lda	cursor_visible	; A = 0xff (visible) or 0x00 (invisible)
+  3209 14D7 EE FF		xri	0ffh		; invert
+  3210 14D9 32 BA 21		sta	cursor_visible	;
+  3211 14DC 21 12 02		lxi	h,212h		; new initial count; start with 0x0212
+  3212 14DF C2 E5 14		jnz	X14e5		; and stick with that if cursor still visible
+  3213 14E2 21 09 01		lxi	h,109h		; otherwise, use half that value (0x0109) if invisible
+  3214 14E5 22 2D 21	X14e5:	shld	cursor_countdn	; store new cursor countdown
+  3215 14E8 2A F6 20		lhld	X20f6
+  3216 14EB 46			mov	b,m
+  3217 14EC 3A 59 21		lda	X2159
+  3218 14EF A8			xra	b
+  3219 14F0 77			mov	m,a
+  3220 14F1 11 00 10		lxi	d,X1000
+  3221 14F4 19			dad	d
+  3222 14F5 3A 5A 21		lda	X215a
+  3223 14F8 AE			xra	m
+  3224 14F9 77			mov	m,a
+  3225 14FA C9			ret
 			
-  3172 14FB 74			mov	m,h
-  3173 14FC 78			mov	a,b
-  3174 14FD B7			ora	a
-  3175 14FE CA 15 15		jz	X1515
-  3176 1501 3D			dcr	a
-  3177 1502 CA 0A 15		jz	X150a
-  3178 1505 3D			dcr	a
-  3179 1506 C0			rnz
-  3180 1507 CD 15 15		call	X1515
-  3181 150A 3A F8 20	X150a:	lda	X20f8
-  3182 150D 47			mov	b,a
-  3183 150E 04			inr	b
-  3184 150F 2A 4E 21		lhld	X214e
-  3185 1512 C3 29 15		jmp	X1529
+  3227 14FB 74			mov	m,h
+  3228 14FC 78			mov	a,b
+  3229 14FD B7			ora	a
+  3230 14FE CA 15 15		jz	X1515
+  3231 1501 3D			dcr	a
+  3232 1502 CA 0A 15		jz	X150a
+  3233 1505 3D			dcr	a
+  3234 1506 C0			rnz
+  3235 1507 CD 15 15		call	X1515
+  3236 150A 3A F8 20	X150a:	lda	X20f8
+  3237 150D 47			mov	b,a
+  3238 150E 04			inr	b
+  3239 150F 2A 4E 21		lhld	X214e
+  3240 1512 C3 29 15		jmp	X1529
 			
-  3187 1515 3A F8 20	X1515:	lda	X20f8
-  3188 1518 47			mov	b,a
-  3189 1519 3A 57 21		lda	X2157
-  3190 151C B7			ora	a
-  3191 151D 3A 50 20		lda	X2050
-  3192 1520 CA 24 15		jz	X1524
-  3193 1523 0F			rrc
-  3194 1524 90		X1524:	sub	b
-  3195 1525 47			mov	b,a
-  3196 1526 2A F6 20		lhld	X20f6
-  3197 1529 7C		X1529:	mov	a,h
-  3198 152A C6 10		adi	10h
-  3199 152C 57			mov	d,a
-  3200 152D 5D			mov	e,l
-  3201 152E 3E FF		mvi	a,0ffh
-  3202 1530 12		X1530:	stax	d
-  3203 1531 36 00		mvi	m,0
-  3204 1533 23			inx	h
-  3205 1534 13			inx	d
-  3206 1535 05			dcr	b
-  3207 1536 C2 30 15		jnz	X1530
-  3208 1539 32 F5 20		sta	X20f5
-  3209 153C AF			xra	a
-  3210 153D 32 F4 20		sta	X20f4
-  3211 1540 C9			ret
+  3242 1515 3A F8 20	X1515:	lda	X20f8
+  3243 1518 47			mov	b,a
+  3244 1519 3A 57 21		lda	X2157
+  3245 151C B7			ora	a
+  3246 151D 3A 50 20		lda	X2050
+  3247 1520 CA 24 15		jz	X1524
+  3248 1523 0F			rrc
+  3249 1524 90		X1524:	sub	b
+  3250 1525 47			mov	b,a
+  3251 1526 2A F6 20		lhld	X20f6
+  3252 1529 7C		X1529:	mov	a,h
+  3253 152A C6 10		adi	10h
+  3254 152C 57			mov	d,a
+  3255 152D 5D			mov	e,l
+  3256 152E 3E FF		mvi	a,0ffh
+  3257 1530 12		X1530:	stax	d
+  3258 1531 36 00		mvi	m,0
+  3259 1533 23			inx	h
+  3260 1534 13			inx	d
+  3261 1535 05			dcr	b
+  3262 1536 C2 30 15		jnz	X1530
+  3263 1539 32 F5 20		sta	X20f5
+  3264 153C AF			xra	a
+  3265 153D 32 F4 20		sta	X20f4
+  3266 1540 C9			ret
 			
-  3213 1541 78			mov	a,b
-  3214 1542 B7			ora	a
-  3215 1543 CA 6A 15		jz	X156a
-  3216 1546 3D			dcr	a
-  3217 1547 CA 55 15		jz	X1555
-  3218 154A 3D			dcr	a
-  3219 154B C0			rnz
-  3220 154C CD 55 15		call	X1555
-  3221 154F CD 6A 15		call	X156a
-  3222 1552 C3 4A 13		jmp	X134a
+  3268 1541 78			mov	a,b
+  3269 1542 B7			ora	a
+  3270 1543 CA 6A 15		jz	X156a
+  3271 1546 3D			dcr	a
+  3272 1547 CA 55 15		jz	X1555
+  3273 154A 3D			dcr	a
+  3274 154B C0			rnz
+  3275 154C CD 55 15		call	X1555
+  3276 154F CD 6A 15		call	X156a
+  3277 1552 C3 4A 13		jmp	X134a
 			
-  3224 1555 21 F9 20	X1555:	lxi	h,X20f9
-  3225 1558 7E			mov	a,m
-  3226 1559 F5			push	psw
-  3227 155A 47			mov	b,a
-  3228 155B AF			xra	a
-  3229 155C 77			mov	m,a
-  3230 155D 0E FF		mvi	c,0ffh
-  3231 155F CD 86 15		call	X1586
-  3232 1562 F1			pop	psw
-  3233 1563 77			mov	m,a
-  3234 1564 CD 74 10		call	X1074
-  3235 1567 C3 0A 15		jmp	X150a
+  3279 1555 21 F9 20	X1555:	lxi	h,X20f9
+  3280 1558 7E			mov	a,m
+  3281 1559 F5			push	psw
+  3282 155A 47			mov	b,a
+  3283 155B AF			xra	a
+  3284 155C 77			mov	m,a
+  3285 155D 0E FF		mvi	c,0ffh
+  3286 155F CD 86 15		call	X1586
+  3287 1562 F1			pop	psw
+  3288 1563 77			mov	m,a
+  3289 1564 CD 74 10		call	X1074
+  3290 1567 C3 0A 15		jmp	X150a
 			
-  3237 156A 3A F8 20	X156a:	lda	X20f8
-  3238 156D B7			ora	a
-  3239 156E CC 4A 13		cz	X134a
-  3240 1571 CD 15 15		call	X1515
-  3241 1574 21 F9 20		lxi	h,X20f9
-  3242 1577 7E			mov	a,m
-  3243 1578 F5			push	psw
-  3244 1579 4F			mov	c,a
-  3245 157A 3E 17		mvi	a,17h
-  3246 157C 91			sub	c
-  3247 157D 47			mov	b,a
-  3248 157E CD 86 15		call	X1586
-  3249 1581 F1			pop	psw
-  3250 1582 77			mov	m,a
-  3251 1583 C3 74 10		jmp	X1074
+  3292 156A 3A F8 20	X156a:	lda	X20f8
+  3293 156D B7			ora	a
+  3294 156E CC 4A 13		cz	X134a
+  3295 1571 CD 15 15		call	X1515
+  3296 1574 21 F9 20		lxi	h,X20f9
+  3297 1577 7E			mov	a,m
+  3298 1578 F5			push	psw
+  3299 1579 4F			mov	c,a
+  3300 157A 3E 17		mvi	a,17h
+  3301 157C 91			sub	c
+  3302 157D 47			mov	b,a
+  3303 157E CD 86 15		call	X1586
+  3304 1581 F1			pop	psw
+  3305 1582 77			mov	m,a
+  3306 1583 C3 74 10		jmp	X1074
 			
-  3253 1586 05		X1586:	dcr	b
-  3254 1587 F8			rm
-  3255 1588 0C			inr	c
-  3256 1589 71			mov	m,c
-  3257 158A C5			push	b
-  3258 158B E5			push	h
-  3259 158C CD E3 13		call	X13e3
-  3260 158F E6 7F		ani	7fh
-  3261 1591 77			mov	m,a
-  3262 1592 3E 70		mvi	a,70h
-  3263 1594 CD 95 13		call	X1395
-  3264 1597 CD 74 10		call	X1074
-  3265 159A 3A 50 20		lda	X2050
-  3266 159D 47			mov	b,a
-  3267 159E CD 29 15		call	X1529
-  3268 15A1 E1			pop	h
-  3269 15A2 C1			pop	b
-  3270 15A3 C3 86 15		jmp	X1586
+  3308 1586 05		X1586:	dcr	b
+  3309 1587 F8			rm
+  3310 1588 0C			inr	c
+  3311 1589 71			mov	m,c
+  3312 158A C5			push	b
+  3313 158B E5			push	h
+  3314 158C CD E3 13		call	X13e3
+  3315 158F E6 7F		ani	7fh
+  3316 1591 77			mov	m,a
+  3317 1592 3E 70		mvi	a,70h
+  3318 1594 CD 95 13		call	X1395
+  3319 1597 CD 74 10		call	X1074
+  3320 159A 3A 50 20		lda	X2050
+  3321 159D 47			mov	b,a
+  3322 159E CD 29 15		call	X1529
+  3323 15A1 E1			pop	h
+  3324 15A2 C1			pop	b
+  3325 15A3 C3 86 15		jmp	X1586
 			
-  3272 15A6 0E 81		mvi	c,81h
-  3273 15A8 CD 8E 10		call	X108e
-  3274 15AB CD BF 11		call	X11bf
-  3275 15AE 3A 30 21		lda	X2130
-  3276 15B1 B7			ora	a
-  3277 15B2 CA B6 15		jz	X15b6
-  3278 15B5 3D			dcr	a
-  3279 15B6 57		X15b6:	mov	d,a
-  3280 15B7 3A 31 21		lda	X2131
-  3281 15BA B7			ora	a
-  3282 15BB C2 C0 15		jnz	X15c0
-  3283 15BE 78			mov	a,b
-  3284 15BF 3C			inr	a
-  3285 15C0 3D		X15c0:	dcr	a
-  3286 15C1 5F			mov	e,a
-  3287 15C2 78			mov	a,b
-  3288 15C3 BB			cmp	e
-  3289 15C4 D8			rc
-  3290 15C5 7A			mov	a,d
-  3291 15C6 BB			cmp	e
-  3292 15C7 D0			rnc
-  3293 15C8 21 55 21		lxi	h,X2155
-  3294 15CB 72			mov	m,d
-  3295 15CC 23			inx	h
-  3296 15CD 73			mov	m,e
-  3297 15CE 4B			mov	c,e
-  3298 15CF 42			mov	b,d
-  3299 15D0 79			mov	a,c
-  3300 15D1 90			sub	b
-  3301 15D2 3C			inr	a
-  3302 15D3 5F			mov	e,a
-  3303 15D4 21 04 20		lxi	h,X2004
-  3304 15D7 78			mov	a,b
-  3305 15D8 B7			ora	a
-  3306 15D9 CA E8 15		jz	X15e8
-  3307 15DC 50			mov	d,b
-  3308 15DD 7E		X15dd:	mov	a,m
-  3309 15DE E6 7F		ani	7fh
-  3310 15E0 77			mov	m,a
-  3311 15E1 CD 2B 16		call	X162b
-  3312 15E4 15			dcr	d
-  3313 15E5 C2 DD 15		jnz	X15dd
-  3314 15E8 7E		X15e8:	mov	a,m
-  3315 15E9 F6 80		ori	80h
-  3316 15EB 77			mov	m,a
-  3317 15EC CD 2B 16		call	X162b
-  3318 15EF 1D			dcr	e
-  3319 15F0 C2 E8 15		jnz	X15e8
-  3320 15F3 3E 17		mvi	a,17h
-  3321 15F5 91			sub	c
-  3322 15F6 CA 05 16		jz	X1605
-  3323 15F9 57			mov	d,a
-  3324 15FA 7E		X15fa:	mov	a,m
-  3325 15FB E6 7F		ani	7fh
-  3326 15FD 77			mov	m,a
-  3327 15FE CD 2B 16		call	X162b
-  3328 1601 15			dcr	d
-  3329 1602 C2 FA 15		jnz	X15fa
-  3330 1605 78		X1605:	mov	a,b
-  3331 1606 32 55 21		sta	X2155
-  3332 1609 79			mov	a,c
-  3333 160A 32 56 21		sta	X2156
-  3334 160D 21 13 21		lxi	h,X2113
-  3335 1610 0E 18		mvi	c,18h
-  3336 1612 7E		X1612:	mov	a,m
-  3337 1613 B7			ora	a
-  3338 1614 F2 23 16		jp	X1623
-  3339 1617 E5			push	h
-  3340 1618 CD 86 13		call	X1386
-  3341 161B 7E			mov	a,m
-  3342 161C 23			inx	h
-  3343 161D 66			mov	h,m
-  3344 161E 6F			mov	l,a
-  3345 161F CD C3 13		call	X13c3
-  3346 1622 E1			pop	h
-  3347 1623 23		X1623:	inx	h
-  3348 1624 0D			dcr	c
-  3349 1625 C2 12 16		jnz	X1612
-  3350 1628 C3 48 18		jmp	X1848
+  3327 15A6 0E 81		mvi	c,81h
+  3328 15A8 CD 8E 10		call	X108e
+  3329 15AB CD BF 11		call	X11bf
+  3330 15AE 3A 30 21		lda	X2130
+  3331 15B1 B7			ora	a
+  3332 15B2 CA B6 15		jz	X15b6
+  3333 15B5 3D			dcr	a
+  3334 15B6 57		X15b6:	mov	d,a
+  3335 15B7 3A 31 21		lda	X2131
+  3336 15BA B7			ora	a
+  3337 15BB C2 C0 15		jnz	X15c0
+  3338 15BE 78			mov	a,b
+  3339 15BF 3C			inr	a
+  3340 15C0 3D		X15c0:	dcr	a
+  3341 15C1 5F			mov	e,a
+  3342 15C2 78			mov	a,b
+  3343 15C3 BB			cmp	e
+  3344 15C4 D8			rc
+  3345 15C5 7A			mov	a,d
+  3346 15C6 BB			cmp	e
+  3347 15C7 D0			rnc
+  3348 15C8 21 55 21		lxi	h,X2155
+  3349 15CB 72			mov	m,d
+  3350 15CC 23			inx	h
+  3351 15CD 73			mov	m,e
+  3352 15CE 4B			mov	c,e
+  3353 15CF 42			mov	b,d
+  3354 15D0 79			mov	a,c
+  3355 15D1 90			sub	b
+  3356 15D2 3C			inr	a
+  3357 15D3 5F			mov	e,a
+  3358 15D4 21 04 20		lxi	h,X2004
+  3359 15D7 78			mov	a,b
+  3360 15D8 B7			ora	a
+  3361 15D9 CA E8 15		jz	X15e8
+  3362 15DC 50			mov	d,b
+  3363 15DD 7E		X15dd:	mov	a,m
+  3364 15DE E6 7F		ani	7fh
+  3365 15E0 77			mov	m,a
+  3366 15E1 CD 2B 16		call	X162b
+  3367 15E4 15			dcr	d
+  3368 15E5 C2 DD 15		jnz	X15dd
+  3369 15E8 7E		X15e8:	mov	a,m
+  3370 15E9 F6 80		ori	80h
+  3371 15EB 77			mov	m,a
+  3372 15EC CD 2B 16		call	X162b
+  3373 15EF 1D			dcr	e
+  3374 15F0 C2 E8 15		jnz	X15e8
+  3375 15F3 3E 17		mvi	a,17h
+  3376 15F5 91			sub	c
+  3377 15F6 CA 05 16		jz	X1605
+  3378 15F9 57			mov	d,a
+  3379 15FA 7E		X15fa:	mov	a,m
+  3380 15FB E6 7F		ani	7fh
+  3381 15FD 77			mov	m,a
+  3382 15FE CD 2B 16		call	X162b
+  3383 1601 15			dcr	d
+  3384 1602 C2 FA 15		jnz	X15fa
+  3385 1605 78		X1605:	mov	a,b
+  3386 1606 32 55 21		sta	X2155
+  3387 1609 79			mov	a,c
+  3388 160A 32 56 21		sta	X2156
+  3389 160D 21 13 21		lxi	h,X2113
+  3390 1610 0E 18		mvi	c,18h
+  3391 1612 7E		X1612:	mov	a,m
+  3392 1613 B7			ora	a
+  3393 1614 F2 23 16		jp	X1623
+  3394 1617 E5			push	h
+  3395 1618 CD 86 13		call	X1386
+  3396 161B 7E			mov	a,m
+  3397 161C 23			inx	h
+  3398 161D 66			mov	h,m
+  3399 161E 6F			mov	l,a
+  3400 161F CD C3 13		call	X13c3
+  3401 1622 E1			pop	h
+  3402 1623 23		X1623:	inx	h
+  3403 1624 0D			dcr	c
+  3404 1625 C2 12 16		jnz	X1612
+  3405 1628 C3 48 18		jmp	X1848
 			
-  3352 162B 23		X162b:	inx	h
-  3353 162C 6E			mov	l,m
-  3354 162D E6 0F		ani	0fh
-  3355 162F F6 20		ori	20h
-  3356 1631 67			mov	h,a
-  3357 1632 23			inx	h
-  3358 1633 C3 DB 13		jmp	X13db
+  3407 162B 23		X162b:	inx	h
+  3408 162C 6E			mov	l,m
+  3409 162D E6 0F		ani	0fh
+  3410 162F F6 20		ori	20h
+  3411 1631 67			mov	h,a
+  3412 1632 23			inx	h
+  3413 1633 C3 DB 13		jmp	X13db
 			
-  3360 1636 21 0D 00	X1636:	lxi	h,X000d
-  3361 1639 22 2D 21		shld	X212d
-  3362 163C AF			xra	a
-  3363 163D 32 BA 21		sta	X21ba
-  3364 1640 2A F6 20		lhld	X20f6
-  3365 1643 3A F4 20		lda	X20f4
-  3366 1646 47			mov	b,a
-  3367 1647 77			mov	m,a
-  3368 1648 7C			mov	a,h
-  3369 1649 C6 10		adi	10h
-  3370 164B 67			mov	h,a
-  3371 164C 3A F5 20		lda	X20f5
-  3372 164F 77			mov	m,a
-  3373 1650 3A 50 20		lda	X2050
-  3374 1653 3D			dcr	a
-  3375 1654 5F			mov	e,a
-  3376 1655 3A 7B 20		lda	X207b
-  3377 1658 B7			ora	a
-  3378 1659 C2 7B 16		jnz	X167b
-  3379 165C 3A F9 20		lda	X20f9
-  3380 165F 21 0E 21		lxi	h,X210e
-  3381 1662 BE			cmp	m
-  3382 1663 CA 7F 16		jz	X167f
-  3383 1666 77			mov	m,a
-  3384 1667 CD 74 10		call	X1074
-  3385 166A AF			xra	a
-  3386 166B 32 54 21		sta	X2154
-  3387 166E 21 57 21		lxi	h,X2157
-  3388 1671 7E			mov	a,m
-  3389 1672 B7			ora	a
-  3390 1673 CA 7B 16		jz	X167b
-  3391 1676 7B			mov	a,e
-  3392 1677 3D			dcr	a
-  3393 1678 B7			ora	a
-  3394 1679 1F			rar
-  3395 167A 5F			mov	e,a
-  3396 167B 7B		X167b:	mov	a,e
-  3397 167C 32 53 21		sta	X2153
-  3398 167F 21 53 21	X167f:	lxi	h,X2153
-  3399 1682 11 F8 20		lxi	d,X20f8
-  3400 1685 1A			ldax	d
-  3401 1686 BE			cmp	m
-  3402 1687 DA 8C 16		jc	X168c
-  3403 168A 7E			mov	a,m
-  3404 168B 12			stax	d
-  3405 168C 3A BB 21	X168c:	lda	X21bb
-  3406 168F C6 08		adi	8
-  3407 1691 96			sub	m
-  3408 1692 C2 A1 16		jnz	X16a1
-  3409 1695 23			inx	h
-  3410 1696 B6			ora	m
-  3411 1697 CA A1 16		jz	X16a1
-  3412 169A CD 38 09		call	X0938
-  3413 169D AF			xra	a
-  3414 169E 32 54 21		sta	X2154
-  3415 16A1 3A F8 20	X16a1:	lda	X20f8
-  3416 16A4 32 BB 21		sta	X21bb
-  3417 16A7 2A 4E 21		lhld	X214e
-  3418 16AA CD DE 13		call	X13de
-  3419 16AD 22 F6 20		shld	X20f6
-  3420 16B0 7E			mov	a,m
-  3421 16B1 32 F4 20		sta	X20f4
-  3422 16B4 47			mov	b,a
-  3423 16B5 7C			mov	a,h
-  3424 16B6 C6 10		adi	10h
-  3425 16B8 67			mov	h,a
-  3426 16B9 7E			mov	a,m
-  3427 16BA 32 F5 20		sta	X20f5
-  3428 16BD 2A F6 20		lhld	X20f6
-  3429 16C0 70			mov	m,b
-  3430 16C1 C9			ret
+  3415 1636 21 0D 00	X1636:	lxi	h,13
+  3416 1639 22 2D 21		shld	cursor_countdn		; reset cursor countdown to 13 (0x000d)
+  3417 163C AF			xra	a
+  3418 163D 32 BA 21		sta	cursor_visible		; reset cursor visibility
+  3419 1640 2A F6 20		lhld	X20f6
+  3420 1643 3A F4 20		lda	X20f4
+  3421 1646 47			mov	b,a
+  3422 1647 77			mov	m,a
+  3423 1648 7C			mov	a,h
+  3424 1649 C6 10		adi	10h
+  3425 164B 67			mov	h,a
+  3426 164C 3A F5 20		lda	X20f5
+  3427 164F 77			mov	m,a
+  3428 1650 3A 50 20		lda	X2050
+  3429 1653 3D			dcr	a
+  3430 1654 5F			mov	e,a
+  3431 1655 3A 7B 20		lda	X207b
+  3432 1658 B7			ora	a
+  3433 1659 C2 7B 16		jnz	X167b
+  3434 165C 3A F9 20		lda	X20f9
+  3435 165F 21 0E 21		lxi	h,X210e
+  3436 1662 BE			cmp	m
+  3437 1663 CA 7F 16		jz	X167f
+  3438 1666 77			mov	m,a
+  3439 1667 CD 74 10		call	X1074
+  3440 166A AF			xra	a
+  3441 166B 32 54 21		sta	X2154
+  3442 166E 21 57 21		lxi	h,X2157
+  3443 1671 7E			mov	a,m
+  3444 1672 B7			ora	a
+  3445 1673 CA 7B 16		jz	X167b
+  3446 1676 7B			mov	a,e
+  3447 1677 3D			dcr	a
+  3448 1678 B7			ora	a
+  3449 1679 1F			rar
+  3450 167A 5F			mov	e,a
+  3451 167B 7B		X167b:	mov	a,e
+  3452 167C 32 53 21		sta	X2153
+  3453 167F 21 53 21	X167f:	lxi	h,X2153
+  3454 1682 11 F8 20		lxi	d,X20f8
+  3455 1685 1A			ldax	d
+  3456 1686 BE			cmp	m
+  3457 1687 DA 8C 16		jc	X168c
+  3458 168A 7E			mov	a,m
+  3459 168B 12			stax	d
+  3460 168C 3A BB 21	X168c:	lda	X21bb
+  3461 168F C6 08		adi	8
+  3462 1691 96			sub	m
+  3463 1692 C2 A1 16		jnz	X16a1
+  3464 1695 23			inx	h
+  3465 1696 B6			ora	m
+  3466 1697 CA A1 16		jz	X16a1
+  3467 169A CD 38 09		call	X0938
+  3468 169D AF			xra	a
+  3469 169E 32 54 21		sta	X2154
+  3470 16A1 3A F8 20	X16a1:	lda	X20f8
+  3471 16A4 32 BB 21		sta	X21bb
+  3472 16A7 2A 4E 21		lhld	X214e
+  3473 16AA CD DE 13		call	X13de
+  3474 16AD 22 F6 20		shld	X20f6
+  3475 16B0 7E			mov	a,m
+  3476 16B1 32 F4 20		sta	X20f4
+  3477 16B4 47			mov	b,a
+  3478 16B5 7C			mov	a,h
+  3479 16B6 C6 10		adi	10h
+  3480 16B8 67			mov	h,a
+  3481 16B9 7E			mov	a,m
+  3482 16BA 32 F5 20		sta	X20f5
+  3483 16BD 2A F6 20		lhld	X20f6
+  3484 16C0 70			mov	m,b
+  3485 16C1 C9			ret
 			
-  3432 16C2 47		X16c2:	mov	b,a
-  3433 16C3 21 F1 16		lxi	h,X16f1
-  3434 16C6 22 40 21		shld	X2140
-  3435 16C9 AF			xra	a
-  3436 16CA 32 2F 21		sta	X212f
-  3437 16CD 32 4B 21		sta	X214b
-  3438 16D0 32 7D 20		sta	X207d
-  3439 16D3 21 30 21		lxi	h,X2130
-  3440 16D6 0E 0F		mvi	c,0fh
-  3441 16D8 AF			xra	a
-  3442 16D9 77		X16d9:	mov	m,a
-  3443 16DA 23			inx	h
-  3444 16DB 0D			dcr	c
-  3445 16DC C2 D9 16		jnz	X16d9
-  3446 16DF 21 B8 21		lxi	h,X21b8
-  3447 16E2 36 00		mvi	m,0
-  3448 16E4 78			mov	a,b
-  3449 16E5 FE 40		cpi	40h
-  3450 16E7 D2 F2 16		jnc	X16f2
-  3451 16EA FE 3C		cpi	3ch
-  3452 16EC DA F2 16		jc	X16f2
-  3453 16EF 77			mov	m,a
-  3454 16F0 C9			ret
+  3487 16C2 47		X16c2:	mov	b,a
+  3488 16C3 21 F1 16		lxi	h,X16f1
+  3489 16C6 22 40 21		shld	X2140
+  3490 16C9 AF			xra	a
+  3491 16CA 32 2F 21		sta	X212f
+  3492 16CD 32 4B 21		sta	X214b
+  3493 16D0 32 7D 20		sta	X207d
+  3494 16D3 21 30 21		lxi	h,X2130
+  3495 16D6 0E 0F		mvi	c,0fh
+  3496 16D8 AF			xra	a
+  3497 16D9 77		X16d9:	mov	m,a
+  3498 16DA 23			inx	h
+  3499 16DB 0D			dcr	c
+  3500 16DC C2 D9 16		jnz	X16d9
+  3501 16DF 21 B8 21		lxi	h,X21b8
+  3502 16E2 36 00		mvi	m,0
+  3503 16E4 78			mov	a,b
+  3504 16E5 FE 40		cpi	40h
+  3505 16E7 D2 F2 16		jnc	X16f2
+  3506 16EA FE 3C		cpi	3ch
+  3507 16EC DA F2 16		jc	X16f2
+  3508 16EF 77			mov	m,a
+  3509 16F0 C9			ret
 			
-  3456 16F1 47		X16f1:	mov	b,a
-  3457 16F2 78		X16f2:	mov	a,b
-  3458 16F3 FE 3A		cpi	3ah
-  3459 16F5 D2 17 17		jnc	X1717
-  3460 16F8 D6 30		sui	30h
-  3461 16FA FA 17 17		jm	X1717
-  3462 16FD 4F			mov	c,a
-  3463 16FE 21 2F 21		lxi	h,X212f
-  3464 1701 7E			mov	a,m
-  3465 1702 FE 1A		cpi	1ah
-  3466 1704 D2 13 17		jnc	X1713
-  3467 1707 07			rlc
-  3468 1708 47			mov	b,a
-  3469 1709 07			rlc
-  3470 170A 07			rlc
-  3471 170B 80			add	b
-  3472 170C DA 13 17		jc	X1713
-  3473 170F 81			add	c
-  3474 1710 D2 15 17		jnc	X1715
-  3475 1713 3E FF	X1713:	mvi	a,0ffh
-  3476 1715 77		X1715:	mov	m,a
-  3477 1716 C9			ret
+  3511 16F1 47		X16f1:	mov	b,a
+  3512 16F2 78		X16f2:	mov	a,b
+  3513 16F3 FE 3A		cpi	3ah
+  3514 16F5 D2 17 17		jnc	X1717
+  3515 16F8 D6 30		sui	30h
+  3516 16FA FA 17 17		jm	X1717
+  3517 16FD 4F			mov	c,a
+  3518 16FE 21 2F 21		lxi	h,X212f
+  3519 1701 7E			mov	a,m
+  3520 1702 FE 1A		cpi	1ah
+  3521 1704 D2 13 17		jnc	X1713
+  3522 1707 07			rlc
+  3523 1708 47			mov	b,a
+  3524 1709 07			rlc
+  3525 170A 07			rlc
+  3526 170B 80			add	b
+  3527 170C DA 13 17		jc	X1713
+  3528 170F 81			add	c
+  3529 1710 D2 15 17		jnc	X1715
+  3530 1713 3E FF	X1713:	mvi	a,0ffh
+  3531 1715 77		X1715:	mov	m,a
+  3532 1716 C9			ret
 			
-  3479 1717 11 30 21	X1717:	lxi	d,X2130
-  3480 171A F5			push	psw
-  3481 171B 21 4B 21		lxi	h,X214b
-  3482 171E 4E			mov	c,m
-  3483 171F 06 00		mvi	b,0
-  3484 1721 EB			xchg
-  3485 1722 09			dad	b
-  3486 1723 01 2F 21		lxi	b,X212f
-  3487 1726 0A			ldax	b
-  3488 1727 77			mov	m,a
-  3489 1728 AF			xra	a
-  3490 1729 02			stax	b
-  3491 172A 1A			ldax	d
-  3492 172B FE 0F		cpi	0fh
-  3493 172D CA 32 17		jz	X1732
-  3494 1730 3C			inr	a
-  3495 1731 12			stax	d
-  3496 1732 F1		X1732:	pop	psw
-  3497 1733 47		X1733:	mov	b,a
-  3498 1734 FE 3B		cpi	3bh
-  3499 1736 C8			rz
-  3500 1737 E6 C0		ani	0c0h
-  3501 1739 78			mov	a,b
-  3502 173A CA 43 17		jz	X1743
-  3503 173D 32 7E 20		sta	X207e
-  3504 1740 C3 A2 0A		jmp	X0aa2
+  3534 1717 11 30 21	X1717:	lxi	d,X2130
+  3535 171A F5			push	psw
+  3536 171B 21 4B 21		lxi	h,X214b
+  3537 171E 4E			mov	c,m
+  3538 171F 06 00		mvi	b,0
+  3539 1721 EB			xchg
+  3540 1722 09			dad	b
+  3541 1723 01 2F 21		lxi	b,X212f
+  3542 1726 0A			ldax	b
+  3543 1727 77			mov	m,a
+  3544 1728 AF			xra	a
+  3545 1729 02			stax	b
+  3546 172A 1A			ldax	d
+  3547 172B FE 0F		cpi	0fh
+  3548 172D CA 32 17		jz	X1732
+  3549 1730 3C			inr	a
+  3550 1731 12			stax	d
+  3551 1732 F1		X1732:	pop	psw
+  3552 1733 47		X1733:	mov	b,a
+  3553 1734 FE 3B		cpi	3bh
+  3554 1736 C8			rz
+  3555 1737 E6 C0		ani	0c0h
+  3556 1739 78			mov	a,b
+  3557 173A CA 43 17		jz	X1743
+  3558 173D 32 7E 20		sta	X207e
+  3559 1740 C3 A2 0A		jmp	X0aa2
 			
-  3506 1743 21 7D 20	X1743:	lxi	h,X207d
-  3507 1746 86			add	m
-  3508 1747 D2 4C 17		jnc	X174c
-  3509 174A 3E FF		mvi	a,0ffh
-  3510 174C 77		X174c:	mov	m,a
-  3511 174D 21 33 17		lxi	h,X1733
-  3512 1750 22 40 21		shld	X2140
-  3513 1753 C9			ret
+  3561 1743 21 7D 20	X1743:	lxi	h,X207d
+  3562 1746 86			add	m
+  3563 1747 D2 4C 17		jnc	X174c
+  3564 174A 3E FF		mvi	a,0ffh
+  3565 174C 77		X174c:	mov	m,a
+  3566 174D 21 33 17		lxi	h,X1733
+  3567 1750 22 40 21		shld	X2140
+  3568 1753 C9			ret
 			
-  3515 1754 16 00	X1754:	mvi	d,0
-  3516 1756 06 01		mvi	b,1
-  3517 1758 C3 62 17		jmp	X1762
+  3570 1754 16 00	X1754:	mvi	d,0
+  3571 1756 06 01		mvi	b,1
+  3572 1758 C3 62 17		jmp	X1762
 			;;
 			;;  Third initialization call?
 			;;
-  3521 175B CD C0 02	X175b:	call	X02c0		;; Initialize start of screen RAM and wipe attribute RAM to 0xff
-  3522 175E 06 0A		mvi	b,0ah		;; B = 0x0a
-  3523 1760 16 01		mvi	d,1		;; D = 1
-  3524 1762 C5		X1762:	push	b		;; push B, D
-  3525 1763 D5			push	d		;;
-  3526 1764 CD BE 17		call	X17be		;; Display wait message
-  3527 1767 D1			pop	d		;; pop D
-  3528 1768 F3			di			;; disable interrupts(???)
-  3529 1769 21 7B 21		lxi	h,X217b		;; HL = 0x217b
-  3530 176C 1E 33		mvi	e,33h		;; E = 0x33
-  3531 176E 0E 01		mvi	c,1		;; C = 1
-  3532 1770 AF			xra	a		;; A = 0
-  3533 1771 32 AE 21	X1771:	sta	X21ae		;; 0x21ae = A
-  3534 1774 79			mov	a,c		;; A = C
-  3535 1775 32 AD 21		sta	X21ad		;; 0x21ad = A
-  3536 1778 D5			push	d		;; push D,H
-  3537 1779 E5			push	h		;;
-  3538 177A 7A			mov	a,d		;; A=D
-  3539 177B B7			ora	a		;; or A
-  3540 177C 7E			mov	a,m		;; load A from HL
-  3541 177D 32 AF 21		sta	X21af		;; store it in 0x21af
-  3542 1780 CC AE 18		cz	X18ae		;; if A is 0 call X18ae
-  3543 1783 CD A3 18		call	X18a3		;; call X18a3
-  3544 1786 E1			pop	h		;; pop H,D
-  3545 1787 D1			pop	d
-  3546 1788 3A AF 21		lda	X21af
-  3547 178B 1D			dcr	e
-  3548 178C CA 9E 17		jz	X179e
-  3549 178F 77			mov	m,a
-  3550 1790 3A AD 21		lda	X21ad
-  3551 1793 07			rlc
-  3552 1794 AE			xra	m
-  3553 1795 4F			mov	c,a
-  3554 1796 23			inx	h
-  3555 1797 3A AE 21		lda	X21ae
-  3556 179A 3C			inr	a
-  3557 179B C3 71 17		jmp	X1771
+  3576 175B CD C0 02	X175b:	call	X02c0		;; Initialize start of screen RAM and wipe attribute RAM to 0xff
+  3577 175E 06 0A		mvi	b,0ah		;; B = 0x0a
+  3578 1760 16 01		mvi	d,1		;; D = 1
+  3579 1762 C5		X1762:	push	b		;; push B, D
+  3580 1763 D5			push	d		;;
+  3581 1764 CD BE 17		call	X17be		;; Display wait message
+  3582 1767 D1			pop	d		;; pop D
+  3583 1768 F3			di			;; disable interrupts(???)
+  3584 1769 21 7B 21		lxi	h,X217b		;; HL = 0x217b
+  3585 176C 1E 33		mvi	e,33h		;; E = 0x33
+  3586 176E 0E 01		mvi	c,1		;; C = 1
+  3587 1770 AF			xra	a		;; A = 0
+  3588 1771 32 AE 21	X1771:	sta	X21ae		;; 0x21ae = A
+  3589 1774 79			mov	a,c		;; A = C
+  3590 1775 32 AD 21		sta	X21ad		;; 0x21ad = A
+  3591 1778 D5			push	d		;; push D,H
+  3592 1779 E5			push	h		;;
+  3593 177A 7A			mov	a,d		;; A=D
+  3594 177B B7			ora	a		;; or A
+  3595 177C 7E			mov	a,m		;; load A from HL
+  3596 177D 32 AF 21		sta	X21af		;; store it in 0x21af
+  3597 1780 CC AE 18		cz	X18ae		;; if A is 0 call X18ae
+  3598 1783 CD A3 18		call	X18a3		;; call X18a3
+  3599 1786 E1			pop	h		;; pop H,D
+  3600 1787 D1			pop	d
+  3601 1788 3A AF 21		lda	X21af
+  3602 178B 1D			dcr	e
+  3603 178C CA 9E 17		jz	X179e
+  3604 178F 77			mov	m,a
+  3605 1790 3A AD 21		lda	X21ad
+  3606 1793 07			rlc
+  3607 1794 AE			xra	m
+  3608 1795 4F			mov	c,a
+  3609 1796 23			inx	h
+  3610 1797 3A AE 21		lda	X21ae
+  3611 179A 3C			inr	a
+  3612 179B C3 71 17		jmp	X1771
 			
-  3559 179E BE		X179e:	cmp	m
-  3560 179F C1			pop	b
-  3561 17A0 0E 00		mvi	c,0
-  3562 17A2 CA AC 17		jz	X17ac
-  3563 17A5 05			dcr	b
-  3564 17A6 C2 62 17		jnz	X1762
-  3565 17A9 CD D0 17		call	X17d0
-  3566 17AC 79		X17ac:	mov	a,c
-  3567 17AD B7			ora	a
-  3568 17AE F5			push	psw
-  3569 17AF 0E 40		mvi	c,40h
-  3570 17B1 3E 63		mvi	a,63h
-  3571 17B3 CD 2B 19		call	X192b
-  3572 17B6 21 F2 D0		lxi	h,Xd0f2
-  3573 17B9 22 04 20		shld	X2004
-  3574 17BC F1			pop	psw
-  3575 17BD C9			ret
+  3614 179E BE		X179e:	cmp	m
+  3615 179F C1			pop	b
+  3616 17A0 0E 00		mvi	c,0
+  3617 17A2 CA AC 17		jz	X17ac
+  3618 17A5 05			dcr	b
+  3619 17A6 C2 62 17		jnz	X1762
+  3620 17A9 CD D0 17		call	X17d0
+  3621 17AC 79		X17ac:	mov	a,c
+  3622 17AD B7			ora	a
+  3623 17AE F5			push	psw
+  3624 17AF 0E 40		mvi	c,40h
+  3625 17B1 3E 63		mvi	a,63h
+  3626 17B3 CD 2B 19		call	X192b
+  3627 17B6 21 F2 D0		lxi	h,Xd0f2
+  3628 17B9 22 04 20		shld	X2004
+  3629 17BC F1			pop	psw
+  3630 17BD C9			ret
 			;;
 			;;  Show wait message
 			;;
-  3579 17BE 11 EC 17	X17be:	lxi	d,X17ec		;; DE = 0x17ec
-  3580 17C1 06 07		mvi	b,7		;; B = 7
-  3581 17C3 21 CC 21		lxi	h,X21cc		;; HL = 0x21cc
-  3582 17C6 CD 8B 03		call	memmov		;; Initialize 0x21cc to Wait message
-  3583 17C9 21 71 CC		lxi	h,Xcc71		;; HL = 0xcc71
-  3584 17CC 22 04 20		shld	X2004		;; retarget screen ram to display wait message
-  3585 17CF C9			ret
+  3634 17BE 11 EC 17	X17be:	lxi	d,X17ec		;; DE = 0x17ec
+  3635 17C1 06 07		mvi	b,7		;; B = 7
+  3636 17C3 21 CC 21		lxi	h,X21cc		;; HL = 0x21cc
+  3637 17C6 CD 8B 03		call	memmov		;; Initialize 0x21cc to Wait message
+  3638 17C9 21 71 CC		lxi	h,Xcc71		;; HL = 0xcc71
+  3639 17CC 22 04 20		shld	X2004		;; retarget screen ram to display wait message
+  3640 17CF C9			ret
 			
-  3587 17D0 21 7B 21	X17d0:	lxi	h,X217b
-  3588 17D3 06 27		mvi	b,27h
-  3589 17D5 36 80	X17d5:	mvi	m,80h
-  3590 17D7 23			inx	h
-  3591 17D8 05			dcr	b
-  3592 17D9 C2 D5 17		jnz	X17d5
-  3593 17DC 11 F3 17		lxi	d,X17f3		;; DE = 0x17f3
-  3594 17DF 06 0B		mvi	b,0bh		;; B = 11
-  3595 17E1 CD 8B 03		call	memmov		;; store
-  3596 17E4 0E 01		mvi	c,1
-  3597 17E6 3E 30		mvi	a,30h
-  3598 17E8 32 78 20		sta	X2078
-  3599 17EB C9			ret
+  3642 17D0 21 7B 21	X17d0:	lxi	h,X217b
+  3643 17D3 06 27		mvi	b,27h
+  3644 17D5 36 80	X17d5:	mvi	m,80h
+  3645 17D7 23			inx	h
+  3646 17D8 05			dcr	b
+  3647 17D9 C2 D5 17		jnz	X17d5
+  3648 17DC 11 F3 17		lxi	d,X17f3		;; DE = 0x17f3
+  3649 17DF 06 0B		mvi	b,0bh		;; B = 11
+  3650 17E1 CD 8B 03		call	memmov		;; store
+  3651 17E4 0E 01		mvi	c,1
+  3652 17E6 3E 30		mvi	a,30h
+  3653 17E8 32 78 20		sta	X2078
+  3654 17EB C9			ret
 			X17ec:
-  3601 17EC			db	'Wait'
+  3656 17EC			db	'Wait'
             57 61 69 74 
             
-  3602 17F0			db	07fh,070h,06h
+  3657 17F0			db	07fh,070h,06h
             7F 70 06 
 			X17f3:
-  3604 17F3			db	0,8,06eh,020h
+  3659 17F3			db	0,8,06eh,020h
             00 08 6E 20 
             
-  3605 17F7			db	0d0h,050h,0,020h
+  3660 17F7			db	0d0h,050h,0,020h
             D0 50 00 20 
             
-  3606 17FB			db	0,0e0h,0e0h
+  3661 17FB			db	0,0e0h,0e0h
             00 E0 E0 
 			X17fe:
-  3608 17FE 3A 55 21		lda	X2155
-  3609 1801 01 FF 00		lxi	b,X00ff
-  3610 1804 C3 0F 18		jmp	X180f
+  3663 17FE 3A 55 21		lda	X2155
+  3664 1801 01 FF 00		lxi	b,X00ff
+  3665 1804 C3 0F 18		jmp	X180f
 			
-  3612 1807 CD BF 11		call	X11bf
-  3613 180A 3A 56 21		lda	X2156
-  3614 180D 0E 01		mvi	c,1
-  3615 180F 21 F9 20	X180f:	lxi	h,X20f9
-  3616 1812 C3 25 18		jmp	X1825
+  3667 1807 CD BF 11		call	X11bf
+  3668 180A 3A 56 21		lda	X2156
+  3669 180D 0E 01		mvi	c,1
+  3670 180F 21 F9 20	X180f:	lxi	h,X20f9
+  3671 1812 C3 25 18		jmp	X1825
 			
-  3618 1815 3A 53 21	X1815:	lda	X2153
-  3619 1818 01 01 FF		lxi	b,Xff01
-  3620 181B C3 22 18		jmp	X1822
+  3673 1815 3A 53 21	X1815:	lda	X2153
+  3674 1818 01 01 FF		lxi	b,Xff01
+  3675 181B C3 22 18		jmp	X1822
 			
-  3622 181E AF		X181e:	xra	a
-  3623 181F 01 FF 00		lxi	b,X00ff
-  3624 1822 21 F8 20	X1822:	lxi	h,X20f8
-  3625 1825 57		X1825:	mov	d,a
-  3626 1826 3A B8 21		lda	X21b8
-  3627 1829 B7			ora	a
-  3628 182A C2 15 0A		jnz	X0a15
-  3629 182D 3A 30 21		lda	X2130
-  3630 1830 B7			ora	a
-  3631 1831 C2 35 18		jnz	X1835
-  3632 1834 3C			inr	a
-  3633 1835 5F		X1835:	mov	e,a
-  3634 1836 7E			mov	a,m
-  3635 1837 BA		X1837:	cmp	d
-  3636 1838 CA 44 18		jz	X1844
-  3637 183B B8			cmp	b
-  3638 183C CA 44 18		jz	X1844
-  3639 183F 81			add	c
-  3640 1840 1D			dcr	e
-  3641 1841 C2 37 18		jnz	X1837
-  3642 1844 77		X1844:	mov	m,a
-  3643 1845 C3 36 16		jmp	X1636
+  3677 181E AF		X181e:	xra	a
+  3678 181F 01 FF 00		lxi	b,X00ff
+  3679 1822 21 F8 20	X1822:	lxi	h,X20f8
+  3680 1825 57		X1825:	mov	d,a
+  3681 1826 3A B8 21		lda	X21b8
+  3682 1829 B7			ora	a
+  3683 182A C2 15 0A		jnz	X0a15
+  3684 182D 3A 30 21		lda	X2130
+  3685 1830 B7			ora	a
+  3686 1831 C2 35 18		jnz	X1835
+  3687 1834 3C			inr	a
+  3688 1835 5F		X1835:	mov	e,a
+  3689 1836 7E			mov	a,m
+  3690 1837 BA		X1837:	cmp	d
+  3691 1838 CA 44 18		jz	X1844
+  3692 183B B8			cmp	b
+  3693 183C CA 44 18		jz	X1844
+  3694 183F 81			add	c
+  3695 1840 1D			dcr	e
+  3696 1841 C2 37 18		jnz	X1837
+  3697 1844 77		X1844:	mov	m,a
+  3698 1845 C3 36 16		jmp	X1636
 			
-  3645 1848 21 00 00	X1848:	lxi	h,X0000
-  3646 184B 22 30 21		shld	X2130
-  3647 184E 3E FF		mvi	a,0ffh
-  3648 1850 32 0E 21		sta	X210e
-  3649 1853 3A 01 21		lda	X2101
-  3650 1856 4F			mov	c,a
-  3651 1857 21 30 21		lxi	h,X2130
-  3652 185A 7E			mov	a,m
-  3653 185B B7			ora	a
-  3654 185C CA 60 18		jz	X1860
-  3655 185F 3D			dcr	a
-  3656 1860 47		X1860:	mov	b,a
-  3657 1861 79			mov	a,c
-  3658 1862 B7			ora	a
-  3659 1863 CA 69 18		jz	X1869
-  3660 1866 3A 55 21		lda	X2155
-  3661 1869 80		X1869:	add	b
-  3662 186A 47			mov	b,a
-  3663 186B 79			mov	a,c
-  3664 186C B7			ora	a
-  3665 186D 3A 56 21		lda	X2156
-  3666 1870 C2 79 18		jnz	X1879
-  3667 1873 48			mov	c,b
-  3668 1874 CD BF 11		call	X11bf
-  3669 1877 78			mov	a,b
-  3670 1878 41			mov	b,c
-  3671 1879 B8		X1879:	cmp	b
-  3672 187A DA 7E 18		jc	X187e
-  3673 187D 78			mov	a,b
-  3674 187E 32 F9 20	X187e:	sta	X20f9
-  3675 1881 23			inx	h
-  3676 1882 7E			mov	a,m
-  3677 1883 B7			ora	a
-  3678 1884 CA 88 18		jz	X1888
-  3679 1887 3D			dcr	a
-  3680 1888 47		X1888:	mov	b,a
-  3681 1889 79			mov	a,c
-  3682 188A B7			ora	a
-  3683 188B C2 95 18		jnz	X1895
-  3684 188E 3A 50 20		lda	X2050
-  3685 1891 3D			dcr	a
-  3686 1892 C3 98 18		jmp	X1898
+  3700 1848 21 00 00	X1848:	lxi	h,0
+  3701 184B 22 30 21		shld	X2130
+  3702 184E 3E FF		mvi	a,0ffh
+  3703 1850 32 0E 21		sta	X210e
+  3704 1853 3A 01 21		lda	X2101
+  3705 1856 4F			mov	c,a
+  3706 1857 21 30 21		lxi	h,X2130
+  3707 185A 7E			mov	a,m
+  3708 185B B7			ora	a
+  3709 185C CA 60 18		jz	X1860
+  3710 185F 3D			dcr	a
+  3711 1860 47		X1860:	mov	b,a
+  3712 1861 79			mov	a,c
+  3713 1862 B7			ora	a
+  3714 1863 CA 69 18		jz	X1869
+  3715 1866 3A 55 21		lda	X2155
+  3716 1869 80		X1869:	add	b
+  3717 186A 47			mov	b,a
+  3718 186B 79			mov	a,c
+  3719 186C B7			ora	a
+  3720 186D 3A 56 21		lda	X2156
+  3721 1870 C2 79 18		jnz	X1879
+  3722 1873 48			mov	c,b
+  3723 1874 CD BF 11		call	X11bf
+  3724 1877 78			mov	a,b
+  3725 1878 41			mov	b,c
+  3726 1879 B8		X1879:	cmp	b
+  3727 187A DA 7E 18		jc	X187e
+  3728 187D 78			mov	a,b
+  3729 187E 32 F9 20	X187e:	sta	X20f9
+  3730 1881 23			inx	h
+  3731 1882 7E			mov	a,m
+  3732 1883 B7			ora	a
+  3733 1884 CA 88 18		jz	X1888
+  3734 1887 3D			dcr	a
+  3735 1888 47		X1888:	mov	b,a
+  3736 1889 79			mov	a,c
+  3737 188A B7			ora	a
+  3738 188B C2 95 18		jnz	X1895
+  3739 188E 3A 50 20		lda	X2050
+  3740 1891 3D			dcr	a
+  3741 1892 C3 98 18		jmp	X1898
 			
-  3688 1895 3A 53 21	X1895:	lda	X2153
-  3689 1898 B8		X1898:	cmp	b
-  3690 1899 DA 9D 18		jc	X189d
-  3691 189C 78			mov	a,b
-  3692 189D 32 F8 20	X189d:	sta	X20f8
-  3693 18A0 C3 36 16		jmp	X1636
+  3743 1895 3A 53 21	X1895:	lda	X2153
+  3744 1898 B8		X1898:	cmp	b
+  3745 1899 DA 9D 18		jc	X189d
+  3746 189C 78			mov	a,b
+  3747 189D 32 F8 20	X189d:	sta	X20f8
+  3748 18A0 C3 36 16		jmp	X1636
 			
-  3695 18A3 0E 40	X18a3:	mvi	c,40h
-  3696 18A5 CD 28 19		call	X1928
-  3697 18A8 CD C1 18		call	X18c1
-  3698 18AB C3 BC 18		jmp	X18bc
+  3750 18A3 0E 40	X18a3:	mvi	c,40h
+  3751 18A5 CD 28 19		call	X1928
+  3752 18A8 CD C1 18		call	X18c1
+  3753 18AB C3 BC 18		jmp	X18bc
 			
-  3700 18AE 0E 40	X18ae:	mvi	c,40h
-  3701 18B0 CD 28 19		call	X1928
-  3702 18B3 CD A8 19		call	X19a8
-  3703 18B6 CD 77 19		call	X1977
-  3704 18B9 CD D6 19		call	X19d6
-  3705 18BC 3E 30	X18bc:	mvi	a,30h
-  3706 18BE D3 62		out	62h
-  3707 18C0 C9			ret
+  3755 18AE 0E 40	X18ae:	mvi	c,40h
+  3756 18B0 CD 28 19		call	X1928
+  3757 18B3 CD A8 19		call	X19a8
+  3758 18B6 CD 77 19		call	X1977
+  3759 18B9 CD D6 19		call	X19d6
+  3760 18BC 3E 30	X18bc:	mvi	a,30h
+  3761 18BE D3 62		out	62h
+  3762 18C0 C9			ret
 			;;
 			;;  On h pulse, write 0x2d to NVR... this looks like it's doing a read
 			;;
-  3711 18C1 DB 42	X18c1:	in	42h
-  3712 18C3 A1			ana	c
-  3713 18C4 CA C1 18		jz	X18c1
-  3714 18C7 DB 42	X18c7:	in	42h
-  3715 18C9 A1			ana	c
-  3716 18CA C2 C7 18		jnz	X18c7
-  3717 18CD 3E 2D		mvi	a,2dh		;; Write READ command to NVR latch
-  3718 18CF D3 62		out	62h
-  3719 18D1 DB 42	X18d1:	in	42h
-  3720 18D3 A1			ana	c
-  3721 18D4 CA D1 18		jz	X18d1
-  3722 18D7 DB 42	X18d7:	in	42h
-  3723 18D9 A1			ana	c
-  3724 18DA C2 D7 18		jnz	X18d7
-  3725 18DD 3E 2F		mvi	a,2fh		;; Write 0x2fh (standby) to nvr latch
-  3726 18DF D3 62		out	62h
-  3727 18E1 21 D3 21		lxi	h,X21d3		;; HL = X21d3
-  3728 18E4 06 0E		mvi	b,0eh		;; B = 14 -- we're reading 14 bits
-  3729 18E6 DB 42	X18e6:	in	42h
-  3730 18E8 A1			ana	c
-  3731 18E9 CA E6 18		jz	X18e6
-  3732 18EC DB 42	X18ec:	in	42h
-  3733 18EE A1			ana	c
-  3734 18EF C2 EC 18		jnz	X18ec		;; wait for NVR clock L
-  3735 18F2 3E 25		mvi	a,25h		;; shft bit out of nvr
-  3736 18F4 D3 62		out	62h
-  3737 18F6 DB 42	X18f6:	in	42h
-  3738 18F8 A1			ana	c
-  3739 18F9 CA F6 18		jz	X18f6		;; wait for NVR clock H
-  3740 18FC DB 42		in	42h		;; read bit and store it in memory
-  3741 18FE 77			mov	m,a
-  3742 18FF 23			inx	h
-  3743 1900 DB 42	X1900:	in	42h
-  3744 1902 A1			ana	c
-  3745 1903 C2 00 19		jnz	X1900		;; wait for NVR clock L
-  3746 1906 05			dcr	b
-  3747 1907 C2 F6 18		jnz	X18f6		;; read next bit
-  3748 190A 3E 2F		mvi	a,2fh		;; send standby
-  3749 190C D3 62		out	62h
-  3750 190E 11 D3 21		lxi	d,X21d3		;; DE = 0x21d3
-  3751 1911 06 0E		mvi	b,0eh		;; B = 14
-  3752 1913 21 00 00		lxi	h,X0000		;; HL = 0
-  3753 1916 29		X1916:	dad	h		;;
-  3754 1917 1A			ldax	d		;; load next char
-  3755 1918 E6 20		ani	20h		;; and with NVR data bit
-  3756 191A 07			rlc			;; rotate NVR bit to high bit
-  3757 191B 07			rlc
-  3758 191C 07			rlc
-  3759 191D B5			ora	l
-  3760 191E 6F			mov	l,a
-  3761 191F 13			inx	d
-  3762 1920 05			dcr	b
-  3763 1921 C2 16 19		jnz	X1916
-  3764 1924 22 AF 21		shld	X21af		;; Store the finished data in 21af and 21ae
-  3765 1927 C9			ret
+  3766 18C1 DB 42	X18c1:	in	42h
+  3767 18C3 A1			ana	c
+  3768 18C4 CA C1 18		jz	X18c1
+  3769 18C7 DB 42	X18c7:	in	42h
+  3770 18C9 A1			ana	c
+  3771 18CA C2 C7 18		jnz	X18c7
+  3772 18CD 3E 2D		mvi	a,2dh		;; Write READ command to NVR latch
+  3773 18CF D3 62		out	62h
+  3774 18D1 DB 42	X18d1:	in	42h
+  3775 18D3 A1			ana	c
+  3776 18D4 CA D1 18		jz	X18d1
+  3777 18D7 DB 42	X18d7:	in	42h
+  3778 18D9 A1			ana	c
+  3779 18DA C2 D7 18		jnz	X18d7
+  3780 18DD 3E 2F		mvi	a,2fh		;; Write 0x2fh (standby) to nvr latch
+  3781 18DF D3 62		out	62h
+  3782 18E1 21 D3 21		lxi	h,X21d3		;; HL = X21d3
+  3783 18E4 06 0E		mvi	b,0eh		;; B = 14 -- we're reading 14 bits
+  3784 18E6 DB 42	X18e6:	in	42h
+  3785 18E8 A1			ana	c
+  3786 18E9 CA E6 18		jz	X18e6
+  3787 18EC DB 42	X18ec:	in	42h
+  3788 18EE A1			ana	c
+  3789 18EF C2 EC 18		jnz	X18ec		;; wait for NVR clock L
+  3790 18F2 3E 25		mvi	a,25h		;; shft bit out of nvr
+  3791 18F4 D3 62		out	62h
+  3792 18F6 DB 42	X18f6:	in	42h
+  3793 18F8 A1			ana	c
+  3794 18F9 CA F6 18		jz	X18f6		;; wait for NVR clock H
+  3795 18FC DB 42		in	42h		;; read bit and store it in memory
+  3796 18FE 77			mov	m,a
+  3797 18FF 23			inx	h
+  3798 1900 DB 42	X1900:	in	42h
+  3799 1902 A1			ana	c
+  3800 1903 C2 00 19		jnz	X1900		;; wait for NVR clock L
+  3801 1906 05			dcr	b
+  3802 1907 C2 F6 18		jnz	X18f6		;; read next bit
+  3803 190A 3E 2F		mvi	a,2fh		;; send standby
+  3804 190C D3 62		out	62h
+  3805 190E 11 D3 21		lxi	d,X21d3		;; DE = 0x21d3
+  3806 1911 06 0E		mvi	b,0eh		;; B = 14
+  3807 1913 21 00 00		lxi	h,0		;; HL = 0
+  3808 1916 29		X1916:	dad	h		;;
+  3809 1917 1A			ldax	d		;; load next char
+  3810 1918 E6 20		ani	20h		;; and with NVR data bit
+  3811 191A 07			rlc			;; rotate NVR bit to high bit
+  3812 191B 07			rlc
+  3813 191C 07			rlc
+  3814 191D B5			ora	l
+  3815 191E 6F			mov	l,a
+  3816 191F 13			inx	d
+  3817 1920 05			dcr	b
+  3818 1921 C2 16 19		jnz	X1916
+  3819 1924 22 AF 21		shld	X21af		;; Store the finished data in 21af and 21ae
+  3820 1927 C9			ret
 			;;
 			;;  Loads address A into NVR address register
 			;;
-  3769 1928 3A AE 21	X1928:	lda	X21ae		;; Load accumulator from 0x21ae -- (0x42)
-  3770 192B 06 FF	X192b:	mvi	b,0ffh		;; B = 0xff
-  3771 192D 04		X192d:	inr	b		;; increment B
-  3772 192E D6 0A		sui	0ah		;; subtract 0x0a from accumulator
-  3773 1930 F2 2D 19		jp	X192d		;; repeat while accumulator is positive
-  3774 1933 C6 0A		adi	0ah		;; add 0x0a to accumulator
+  3824 1928 3A AE 21	X1928:	lda	X21ae		;; Load accumulator from 0x21ae -- (0x42)
+  3825 192B 06 FF	X192b:	mvi	b,0ffh		;; B = 0xff
+  3826 192D 04		X192d:	inr	b		;; increment B
+  3827 192E D6 0A		sui	0ah		;; subtract 0x0a from accumulator
+  3828 1930 F2 2D 19		jp	X192d		;; repeat while accumulator is positive
+  3829 1933 C6 0A		adi	0ah		;; add 0x0a to accumulator
 			
 				;;  B = A/10, A = A%10 -- this is almost certainly related to NVR!
 				;;  First, fill the buffer at 21d3 with 20 bytes of 0x23 (accept address 1)
 			
-  3779 1935 21 D3 21		lxi	h,X21d3		;; HL = 0x21d3
-  3780 1938 1E 23		mvi	e,23h		;; E = 0x23
-  3781 193A 16 14		mvi	d,14h		;; D = 0x14
-  3782 193C 73		X193c:	mov	m,e		;;
-  3783 193D 23			inx	h		;; HL++
-  3784 193E 15			dcr	d		;; D--
-  3785 193F C2 3C 19		jnz	X193c		;; repeat until D is zero
+  3834 1935 21 D3 21		lxi	h,X21d3		;; HL = 0x21d3
+  3835 1938 1E 23		mvi	e,23h		;; E = 0x23
+  3836 193A 16 14		mvi	d,14h		;; D = 0x14
+  3837 193C 73		X193c:	mov	m,e		;;
+  3838 193D 23			inx	h		;; HL++
+  3839 193E 15			dcr	d		;; D--
+  3840 193F C2 3C 19		jnz	X193c		;; repeat until D is zero
 			
 				;;  End buffer with 0x2f -- put in standby
 			
-  3789 1942 36 2F		mvi	m,2fh		;; Store 0x2f in 21e7
+  3844 1942 36 2F		mvi	m,2fh		;; Store 0x2f in 21e7
 			
 				;;  Set 21d3 + a to 0x22 (accept address 0)
 			
-  3793 1944 21 D3 21		lxi	h,X21d3		;; HL = 0x21d3
-  3794 1947 5F			mov	e,a		;; copy A to E
-  3795 1948 16 00		mvi	d,0		;; clear D
-  3796 194A 19			dad	d		;; add DE to HL -- calculate address of bit A
-  3797 194B 36 22		mvi	m,22h		;; Store 0x22 in M
+  3848 1944 21 D3 21		lxi	h,X21d3		;; HL = 0x21d3
+  3849 1947 5F			mov	e,a		;; copy A to E
+  3850 1948 16 00		mvi	d,0		;; clear D
+  3851 194A 19			dad	d		;; add DE to HL -- calculate address of bit A
+  3852 194B 36 22		mvi	m,22h		;; Store 0x22 in M
 			
 				;;  Set 21d3 + 10 + b to 0x22 (accept address 0)
 			
-  3801 194D 21 D3 21		lxi	h,X21d3		;; HL = 0x21d3
-  3802 1950 3E 0A		mvi	a,0ah		;; A = 0x0a
-  3803 1952 80			add	b		;; A = 0x0a + B
-  3804 1953 5F			mov	e,a
-  3805 1954 19			dad	d
-  3806 1955 36 22		mvi	m,22h
+  3856 194D 21 D3 21		lxi	h,X21d3		;; HL = 0x21d3
+  3857 1950 3E 0A		mvi	a,0ah		;; A = 0x0a
+  3858 1952 80			add	b		;; A = 0x0a + B
+  3859 1953 5F			mov	e,a
+  3860 1954 19			dad	d
+  3861 1955 36 22		mvi	m,22h
 			
 				;; Wait for horiz latch
 			
-  3810 1957 DB 42	X1957:	in	42h
-  3811 1959 A1			ana	c
-  3812 195A C2 57 19		jnz	X1957
+  3865 1957 DB 42	X1957:	in	42h
+  3866 1959 A1			ana	c
+  3867 195A C2 57 19		jnz	X1957
 			
 				;; Now copy from 21d3 to nvr latch, one per edge, 21 bytes
 			
-  3816 195D 21 D3 21		lxi	h,X21d3
-  3817 1960 06 15		mvi	b,15h		;;
-  3818 1962 DB 42	X1962:	in	42h
-  3819 1964 A1			ana	c		;; Flags Buffer & C
-  3820 1965 CA 62 19		jz	X1962
-  3821 1968 05			dcr	b
-  3822 1969 F8			rm			;; Return if B is negative
-  3823 196A DB 42	X196a:	in	42h
-  3824 196C A1			ana	c
-  3825 196D C2 6A 19		jnz	X196a
-  3826 1970 7E			mov	a,m
-  3827 1971 D3 62		out	62h
-  3828 1973 23			inx	h
-  3829 1974 C3 62 19		jmp	X1962
+  3871 195D 21 D3 21		lxi	h,X21d3
+  3872 1960 06 15		mvi	b,15h		;;
+  3873 1962 DB 42	X1962:	in	42h
+  3874 1964 A1			ana	c		;; Flags Buffer & C
+  3875 1965 CA 62 19		jz	X1962
+  3876 1968 05			dcr	b
+  3877 1969 F8			rm			;; Return if B is negative
+  3878 196A DB 42	X196a:	in	42h
+  3879 196C A1			ana	c
+  3880 196D C2 6A 19		jnz	X196a
+  3881 1970 7E			mov	a,m
+  3882 1971 D3 62		out	62h
+  3883 1973 23			inx	h
+  3884 1974 C3 62 19		jmp	X1962
 			
-  3831 1977 2A AF 21	X1977:	lhld	X21af
-  3832 197A 29			dad	h
-  3833 197B 29			dad	h
-  3834 197C 11 D3 21		lxi	d,X21d3
-  3835 197F 06 0E		mvi	b,0eh
-  3836 1981 3E 20	X1981:	mvi	a,20h
-  3837 1983 29			dad	h
-  3838 1984 17			ral
-  3839 1985 12			stax	d
-  3840 1986 13			inx	d
-  3841 1987 05			dcr	b
-  3842 1988 C2 81 19		jnz	X1981
-  3843 198B 3E 2F		mvi	a,2fh
-  3844 198D 12			stax	d
-  3845 198E 21 D3 21		lxi	h,X21d3
-  3846 1991 06 0F		mvi	b,0fh
-  3847 1993 DB 42	X1993:	in	42h
-  3848 1995 A1			ana	c
-  3849 1996 CA 93 19		jz	X1993
-  3850 1999 DB 42	X1999:	in	42h
-  3851 199B A1			ana	c
-  3852 199C C2 99 19		jnz	X1999
-  3853 199F 7E			mov	a,m
-  3854 19A0 D3 62		out	62h
-  3855 19A2 23			inx	h
-  3856 19A3 05			dcr	b
-  3857 19A4 C2 93 19		jnz	X1993
-  3858 19A7 C9			ret
+  3886 1977 2A AF 21	X1977:	lhld	X21af
+  3887 197A 29			dad	h
+  3888 197B 29			dad	h
+  3889 197C 11 D3 21		lxi	d,X21d3
+  3890 197F 06 0E		mvi	b,0eh
+  3891 1981 3E 20	X1981:	mvi	a,20h
+  3892 1983 29			dad	h
+  3893 1984 17			ral
+  3894 1985 12			stax	d
+  3895 1986 13			inx	d
+  3896 1987 05			dcr	b
+  3897 1988 C2 81 19		jnz	X1981
+  3898 198B 3E 2F		mvi	a,2fh
+  3899 198D 12			stax	d
+  3900 198E 21 D3 21		lxi	h,X21d3
+  3901 1991 06 0F		mvi	b,0fh
+  3902 1993 DB 42	X1993:	in	42h
+  3903 1995 A1			ana	c
+  3904 1996 CA 93 19		jz	X1993
+  3905 1999 DB 42	X1999:	in	42h
+  3906 199B A1			ana	c
+  3907 199C C2 99 19		jnz	X1999
+  3908 199F 7E			mov	a,m
+  3909 19A0 D3 62		out	62h
+  3910 19A2 23			inx	h
+  3911 19A3 05			dcr	b
+  3912 19A4 C2 93 19		jnz	X1993
+  3913 19A7 C9			ret
 			
-  3860 19A8 DB 42	X19a8:	in	42h
-  3861 19AA A1			ana	c
-  3862 19AB CA A8 19		jz	X19a8
-  3863 19AE DB 42	X19ae:	in	42h
-  3864 19B0 A1			ana	c
-  3865 19B1 C2 AE 19		jnz	X19ae
-  3866 19B4 3E 2B		mvi	a,2bh
-  3867 19B6 D3 62		out	62h
-  3868 19B8 CD C0 19		call	X19c0
-  3869 19BB 3E 2F		mvi	a,2fh
-  3870 19BD D3 62		out	62h
-  3871 19BF C9			ret
+  3915 19A8 DB 42	X19a8:	in	42h
+  3916 19AA A1			ana	c
+  3917 19AB CA A8 19		jz	X19a8
+  3918 19AE DB 42	X19ae:	in	42h
+  3919 19B0 A1			ana	c
+  3920 19B1 C2 AE 19		jnz	X19ae
+  3921 19B4 3E 2B		mvi	a,2bh
+  3922 19B6 D3 62		out	62h
+  3923 19B8 CD C0 19		call	X19c0
+  3924 19BB 3E 2F		mvi	a,2fh
+  3925 19BD D3 62		out	62h
+  3926 19BF C9			ret
 			
-  3873 19C0 21 3B 01	X19c0:	lxi	h,X013b
-  3874 19C3 DB 42	X19c3:	in	42h
-  3875 19C5 A1			ana	c
-  3876 19C6 CA C3 19		jz	X19c3
-  3877 19C9 DB 42	X19c9:	in	42h
-  3878 19CB A1			ana	c
-  3879 19CC C2 C9 19		jnz	X19c9
-  3880 19CF 2B			dcx	h
-  3881 19D0 7C			mov	a,h
-  3882 19D1 B5			ora	l
-  3883 19D2 C2 C3 19		jnz	X19c3
-  3884 19D5 C9			ret
+  3928 19C0 21 3B 01	X19c0:	lxi	h,X013b
+  3929 19C3 DB 42	X19c3:	in	42h
+  3930 19C5 A1			ana	c
+  3931 19C6 CA C3 19		jz	X19c3
+  3932 19C9 DB 42	X19c9:	in	42h
+  3933 19CB A1			ana	c
+  3934 19CC C2 C9 19		jnz	X19c9
+  3935 19CF 2B			dcx	h
+  3936 19D0 7C			mov	a,h
+  3937 19D1 B5			ora	l
+  3938 19D2 C2 C3 19		jnz	X19c3
+  3939 19D5 C9			ret
 			
-  3886 19D6 DB 42	X19d6:	in	42h
-  3887 19D8 A1			ana	c
-  3888 19D9 CA D6 19		jz	X19d6
-  3889 19DC DB 42	X19dc:	in	42h
-  3890 19DE A1			ana	c
-  3891 19DF C2 DC 19		jnz	X19dc
-  3892 19E2 3E 29		mvi	a,29h
-  3893 19E4 D3 62		out	62h
-  3894 19E6 CD C0 19		call	X19c0
-  3895 19E9 3E 2F		mvi	a,2fh
-  3896 19EB D3 62		out	62h
-  3897 19ED C9			ret
+  3941 19D6 DB 42	X19d6:	in	42h
+  3942 19D8 A1			ana	c
+  3943 19D9 CA D6 19		jz	X19d6
+  3944 19DC DB 42	X19dc:	in	42h
+  3945 19DE A1			ana	c
+  3946 19DF C2 DC 19		jnz	X19dc
+  3947 19E2 3E 29		mvi	a,29h
+  3948 19E4 D3 62		out	62h
+  3949 19E6 CD C0 19		call	X19c0
+  3950 19E9 3E 2F		mvi	a,2fh
+  3951 19EB D3 62		out	62h
+  3952 19ED C9			ret
 			
-  3899 19EE FE 20	X19ee:	cpi	20h
-  3900 19F0 0E 43		mvi	c,43h
-  3901 19F2 CA FF 01		jz	X01ff
-  3902 19F5 21 B0 1B		lxi	h,X1bb0
-  3903 19F8 E5			push	h
-  3904 19F9 FE 0D		cpi	0dh
-  3905 19FB CA 4B 09		jz	X094b
-  3906 19FE FE 09		cpi	9
-  3907 1A00 CA F9 0D		jz	X0df9
-  3908 1A03 FE 3A		cpi	3ah
-  3909 1A05 D2 60 1B		jnc	X1b60
-  3910 1A08 D6 30		sui	30h
-  3911 1A0A F8			rm
-  3912 1A0B 87			add	a
-  3913 1A0C 21 A2 1A		lxi	h,X1aa2
-  3914 1A0F CD DE 13		call	X13de
-  3915 1A12 CD 90 13		call	X1390
-  3916 1A15 78			mov	a,b
-  3917 1A16 11 AC 21		lxi	d,X21ac
-  3918 1A19 E9			pchl
+  3954 19EE FE 20	X19ee:	cpi	20h
+  3955 19F0 0E 43		mvi	c,43h
+  3956 19F2 CA FF 01		jz	X01ff
+  3957 19F5 21 B0 1B		lxi	h,X1bb0
+  3958 19F8 E5			push	h
+  3959 19F9 FE 0D		cpi	0dh
+  3960 19FB CA 4B 09		jz	X094b
+  3961 19FE FE 09		cpi	9
+  3962 1A00 CA F9 0D		jz	X0df9
+  3963 1A03 FE 3A		cpi	3ah
+  3964 1A05 D2 60 1B		jnc	X1b60
+  3965 1A08 D6 30		sui	30h
+  3966 1A0A F8			rm
+  3967 1A0B 87			add	a
+  3968 1A0C 21 A2 1A		lxi	h,X1aa2
+  3969 1A0F CD DE 13		call	X13de
+  3970 1A12 CD 90 13		call	X1390
+  3971 1A15 78			mov	a,b
+  3972 1A16 11 AC 21		lxi	d,X21ac
+  3973 1A19 E9			pchl
 			
-  3920 1A1A 32 77 21	X1a1a:	sta	X2177
-  3921 1A1D C3 12 08		jmp	X0812
+  3975 1A1A 32 77 21	X1a1a:	sta	X2177
+  3976 1A1D C3 12 08		jmp	X0812
 			
-  3923 1A20 3A 7B 20	X1a20:	lda	X207b
-  3924 1A23 EE FF		xri	0ffh
-  3925 1A25 32 7B 20		sta	X207b
-  3926 1A28 CA 61 1A		jz	X1a61
-  3927 1A2B 0E 80	X1a2b:	mvi	c,80h
-  3928 1A2D CD 8E 10		call	X108e
-  3929 1A30 2A 40 21		lhld	X2140
-  3930 1A33 22 11 21		shld	X2111
-  3931 1A36 21 EE 19		lxi	h,X19ee
-  3932 1A39 22 40 21		shld	X2140
-  3933 1A3C 21 00 00		lxi	h,X0000
-  3934 1A3F 22 43 21		shld	X2143
-  3935 1A42 22 72 21		shld	X2172
-  3936 1A45 2A 04 20	X1a45:	lhld	X2004
-  3937 1A48 22 C5 21		shld	X21c5
-  3938 1A4B 2A F8 20		lhld	X20f8
-  3939 1A4E 22 0D 21		shld	X210d
-  3940 1A51 CD BA 1B		call	X1bba
-  3941 1A54 22 4E 21		shld	X214e
-  3942 1A57 AF			xra	a
-  3943 1A58 32 F8 20		sta	X20f8
-  3944 1A5B CD F9 1B		call	X1bf9
-  3945 1A5E C3 36 16		jmp	X1636
+  3978 1A20 3A 7B 20	X1a20:	lda	X207b
+  3979 1A23 EE FF		xri	0ffh
+  3980 1A25 32 7B 20		sta	X207b
+  3981 1A28 CA 61 1A		jz	X1a61
+  3982 1A2B 0E 80	X1a2b:	mvi	c,80h
+  3983 1A2D CD 8E 10		call	X108e
+  3984 1A30 2A 40 21		lhld	X2140
+  3985 1A33 22 11 21		shld	X2111
+  3986 1A36 21 EE 19		lxi	h,X19ee
+  3987 1A39 22 40 21		shld	X2140
+  3988 1A3C 21 00 00		lxi	h,0
+  3989 1A3F 22 43 21		shld	X2143
+  3990 1A42 22 72 21		shld	X2172
+  3991 1A45 2A 04 20	X1a45:	lhld	X2004
+  3992 1A48 22 C5 21		shld	X21c5
+  3993 1A4B 2A F8 20		lhld	X20f8
+  3994 1A4E 22 0D 21		shld	X210d
+  3995 1A51 CD BA 1B		call	X1bba
+  3996 1A54 22 4E 21		shld	X214e
+  3997 1A57 AF			xra	a
+  3998 1A58 32 F8 20		sta	X20f8
+  3999 1A5B CD F9 1B		call	X1bf9
+  4000 1A5E C3 36 16		jmp	X1636
 			
-  3947 1A61 2A 11 21	X1a61:	lhld	X2111
-  3948 1A64 22 40 21		shld	X2140
-  3949 1A67 CD BA 1B		call	X1bba
-  3950 1A6A 11 00 10		lxi	d,X1000
-  3951 1A6D 19			dad	d
-  3952 1A6E 3A 50 20		lda	X2050
-  3953 1A71 36 FF	X1a71:	mvi	m,0ffh
-  3954 1A73 23			inx	h
-  3955 1A74 3D			dcr	a
-  3956 1A75 C2 71 1A		jnz	X1a71
-  3957 1A78 21 0D 21		lxi	h,X210d
-  3958 1A7B 7E			mov	a,m
-  3959 1A7C 32 F8 20		sta	X20f8
-  3960 1A7F 3E FF		mvi	a,0ffh
-  3961 1A81 23			inx	h
-  3962 1A82 77			mov	m,a
-  3963 1A83 CD 36 16		call	X1636
-  3964 1A86 2A C5 21		lhld	X21c5
-  3965 1A89 22 04 20		shld	X2004
-  3966 1A8C AF			xra	a
-  3967 1A8D 32 C4 21		sta	X21c4
-  3968 1A90 32 C2 21		sta	X21c2
-  3969 1A93 DB 42		in	42h
-  3970 1A95 E6 08		ani	8
-  3971 1A97 CA A1 1A		jz	X1aa1
-  3972 1A9A 3A 76 21		lda	X2176
-  3973 1A9D B7			ora	a
-  3974 1A9E CC E8 12		cz	X12e8
-  3975 1AA1 C9		X1aa1:	ret
+  4002 1A61 2A 11 21	X1a61:	lhld	X2111
+  4003 1A64 22 40 21		shld	X2140
+  4004 1A67 CD BA 1B		call	X1bba
+  4005 1A6A 11 00 10		lxi	d,X1000
+  4006 1A6D 19			dad	d
+  4007 1A6E 3A 50 20		lda	X2050
+  4008 1A71 36 FF	X1a71:	mvi	m,0ffh
+  4009 1A73 23			inx	h
+  4010 1A74 3D			dcr	a
+  4011 1A75 C2 71 1A		jnz	X1a71
+  4012 1A78 21 0D 21		lxi	h,X210d
+  4013 1A7B 7E			mov	a,m
+  4014 1A7C 32 F8 20		sta	X20f8
+  4015 1A7F 3E FF		mvi	a,0ffh
+  4016 1A81 23			inx	h
+  4017 1A82 77			mov	m,a
+  4018 1A83 CD 36 16		call	X1636
+  4019 1A86 2A C5 21		lhld	X21c5
+  4020 1A89 22 04 20		shld	X2004
+  4021 1A8C AF			xra	a
+  4022 1A8D 32 C4 21		sta	X21c4
+  4023 1A90 32 C2 21		sta	X21c2
+  4024 1A93 DB 42		in	42h
+  4025 1A95 E6 08		ani	8
+  4026 1A97 CA A1 1A		jz	X1aa1
+  4027 1A9A 3A 76 21		lda	X2176
+  4028 1A9D B7			ora	a
+  4029 1A9E CC E8 12		cz	X12e8
+  4030 1AA1 C9		X1aa1:	ret
 			
-  3977 1AA2 CF		X1aa2:	rst	1
-  3978 1AA3 1A			ldax	d
-  3979 1AA4 09			dad	b
-  3980 1AA5 1B			dcx	d
-  3981 1AA6 D0			rnc
-  3982 1AA7 1A			ldax	d
-  3983 1AA8 F2 1A FE		jp	Xfe1a
-  3984 1AAB 1A			ldax	d
-  3985 1AAC 0A			ldax	b
-  3986 1AAD 1B			dcx	d
-  3987 1AAE 22 1B 40		shld	X401b
-  3988 1AB1 1B			dcx	d
-  3989 1AB2 41			mov	b,c
-  3990 1AB3 1B			dcx	d
-  3991 1AB4 B6			ora	m
-  3992 1AB5 1A			ldax	d
-  3993 1AB6 CD 52 1B		call	X1b52
-  3994 1AB9 AF			xra	a
-  3995 1ABA 32 0E 21		sta	X210e
-  3996 1ABD 32 0D 21		sta	X210d
-  3997 1AC0 3A A2 21		lda	X21a2
-  3998 1AC3 B7			ora	a
-  3999 1AC4 F5			push	psw
-  4000 1AC5 CC 77 0B		cz	X0b77
-  4001 1AC8 F1			pop	psw
-  4002 1AC9 C4 63 0B		cnz	X0b63
-  4003 1ACC C3 45 1A		jmp	X1a45
+  4032 1AA2 CF		X1aa2:	rst	1
+  4033 1AA3 1A			ldax	d
+  4034 1AA4 09			dad	b
+  4035 1AA5 1B			dcx	d
+  4036 1AA6 D0			rnc
+  4037 1AA7 1A			ldax	d
+  4038 1AA8 F2 1A FE		jp	Xfe1a
+  4039 1AAB 1A			ldax	d
+  4040 1AAC 0A			ldax	b
+  4041 1AAD 1B			dcx	d
+  4042 1AAE 22 1B 40		shld	X401b
+  4043 1AB1 1B			dcx	d
+  4044 1AB2 41			mov	b,c
+  4045 1AB3 1B			dcx	d
+  4046 1AB4 B6			ora	m
+  4047 1AB5 1A			ldax	d
+  4048 1AB6 CD 52 1B		call	X1b52
+  4049 1AB9 AF			xra	a
+  4050 1ABA 32 0E 21		sta	X210e
+  4051 1ABD 32 0D 21		sta	X210d
+  4052 1AC0 3A A2 21		lda	X21a2
+  4053 1AC3 B7			ora	a
+  4054 1AC4 F5			push	psw
+  4055 1AC5 CC 77 0B		cz	X0b77
+  4056 1AC8 F1			pop	psw
+  4057 1AC9 C4 63 0B		cnz	X0b63
+  4058 1ACC C3 45 1A		jmp	X1a45
 			
-  4005 1ACF C7			rst	0
-  4006 1AD0 CD 52 1B		call	X1b52
-  4007 1AD3 3A F8 20		lda	X20f8
-  4008 1AD6 B7			ora	a
-  4009 1AD7 C8			rz
-  4010 1AD8 CD 23 0E		call	X0e23
-  4011 1ADB AE			xra	m
-  4012 1ADC 77			mov	m,a
-  4013 1ADD CD 23 0E		call	X0e23
-  4014 1AE0 A6			ana	m
-  4015 1AE1 06 54		mvi	b,54h
-  4016 1AE3 C2 E8 1A		jnz	X1ae8
-  4017 1AE6 06 00	X1ae6:	mvi	b,0
-  4018 1AE8 78		X1ae8:	mov	a,b
-  4019 1AE9 32 F4 20		sta	X20f4
-  4020 1AEC 3A F8 20		lda	X20f8
-  4021 1AEF C3 EA 1E		jmp	X1eea
+  4060 1ACF C7			rst	0
+  4061 1AD0 CD 52 1B		call	X1b52
+  4062 1AD3 3A F8 20		lda	X20f8
+  4063 1AD6 B7			ora	a
+  4064 1AD7 C8			rz
+  4065 1AD8 CD 23 0E		call	X0e23
+  4066 1ADB AE			xra	m
+  4067 1ADC 77			mov	m,a
+  4068 1ADD CD 23 0E		call	X0e23
+  4069 1AE0 A6			ana	m
+  4070 1AE1 06 54		mvi	b,54h
+  4071 1AE3 C2 E8 1A		jnz	X1ae8
+  4072 1AE6 06 00	X1ae6:	mvi	b,0
+  4073 1AE8 78		X1ae8:	mov	a,b
+  4074 1AE9 32 F4 20		sta	X20f4
+  4075 1AEC 3A F8 20		lda	X20f8
+  4076 1AEF C3 EA 1E		jmp	X1eea
 			;;
 			;;  Below is what appears to be a bunch of dead code-- unreferenced functions (meant for use
 			;;  by an expansion rom or patch, perhaps?).
 			;;
-  4026 1AF2 CD 52 1B		call	X1b52
-  4027 1AF5 CD EC 0D		call	X0dec
-  4028 1AF8 CD CD 1C		call	X1ccd
-  4029 1AFB C3 E6 1A		jmp	X1ae6
+  4081 1AF2 CD 52 1B		call	X1b52
+  4082 1AF5 CD EC 0D		call	X0dec
+  4083 1AF8 CD CD 1C		call	X1ccd
+  4084 1AFB C3 E6 1A		jmp	X1ae6
 			
-  4031 1AFE 21 A5 21		lxi	h,X21a5
-  4032 1B01 7E			mov	a,m
-  4033 1B02 EE 20		xri	20h
-  4034 1B04 77			mov	m,a
-  4035 1B05 AF			xra	a
-  4036 1B06 32 44 21		sta	X2144
-  4037 1B09 C9			ret
+  4086 1AFE 21 A5 21		lxi	h,X21a5
+  4087 1B01 7E			mov	a,m
+  4088 1B02 EE 20		xri	20h
+  4089 1B04 77			mov	m,a
+  4090 1B05 AF			xra	a
+  4091 1B06 32 44 21		sta	X2144
+  4092 1B09 C9			ret
 			
-  4039 1B0A CD 4B 09		call	X094b
-  4040 1B0D 21 5A 22		lxi	h,X225a
-  4041 1B10 7E			mov	a,m
-  4042 1B11 EE 03		xri	3
-  4043 1B13 77			mov	m,a
-  4044 1B14 32 65 22		sta	X2265
-  4045 1B17 E6 01		ani	1
-  4046 1B19 32 BE 21		sta	X21be
-  4047 1B1C CA D3 1C		jz	X1cd3
-  4048 1B1F C3 35 1C		jmp	X1c35
+  4094 1B0A CD 4B 09		call	X094b
+  4095 1B0D 21 5A 22		lxi	h,X225a
+  4096 1B10 7E			mov	a,m
+  4097 1B11 EE 03		xri	3
+  4098 1B13 77			mov	m,a
+  4099 1B14 32 65 22		sta	X2265
+  4100 1B17 E6 01		ani	1
+  4101 1B19 32 BE 21		sta	X21be
+  4102 1B1C CA D3 1C		jz	X1cd3
+  4103 1B1F C3 35 1C		jmp	X1c35
 			
-  4050 1B22 CD 59 1B		call	X1b59
-  4051 1B25 21 A6 21		lxi	h,X21a6
-  4052 1B28 3A F8 20		lda	X20f8
-  4053 1B2B D6 02		sui	2
-  4054 1B2D FE 28		cpi	28h
-  4055 1B2F D0			rnc
-  4056 1B30 00			nop
+  4105 1B22 CD 59 1B		call	X1b59
+  4106 1B25 21 A6 21		lxi	h,X21a6
+  4107 1B28 3A F8 20		lda	X20f8
+  4108 1B2B D6 02		sui	2
+  4109 1B2D FE 28		cpi	28h
+  4110 1B2F D0			rnc
+  4111 1B30 00			nop
 			
             1B 34		org	1b34h
 			
-  4060 1B34 57			mov	d,a
-  4061 1B35 CD 2B 0E		call	X0e2b
-  4062 1B38 AE			xra	m
-  4063 1B39 77			mov	m,a
-  4064 1B3A CD DB 1D		call	X1ddb
-  4065 1B3D C3 D3 1C		jmp	X1cd3
+  4115 1B34 57			mov	d,a
+  4116 1B35 CD 2B 0E		call	X0e2b
+  4117 1B38 AE			xra	m
+  4118 1B39 77			mov	m,a
+  4119 1B3A CD DB 1D		call	X1ddb
+  4120 1B3D C3 D3 1C		jmp	X1cd3
 			
-  4067 1B40 1B			dcx	d
-  4068 1B41 EB			xchg
-  4069 1B42 CD 59 1B		call	X1b59
-  4070 1B45 32 F8 20		sta	X20f8
-  4071 1B48 7E			mov	a,m
-  4072 1B49 C6 10		adi	10h
-  4073 1B4B 77			mov	m,a
-  4074 1B4C CD DB 1D		call	X1ddb
-  4075 1B4F C3 D3 1C		jmp	X1cd3
+  4122 1B40 1B			dcx	d
+  4123 1B41 EB			xchg
+  4124 1B42 CD 59 1B		call	X1b59
+  4125 1B45 32 F8 20		sta	X20f8
+  4126 1B48 7E			mov	a,m
+  4127 1B49 C6 10		adi	10h
+  4128 1B4B 77			mov	m,a
+  4129 1B4C CD DB 1D		call	X1ddb
+  4130 1B4F C3 D3 1C		jmp	X1cd3
 			
-  4077 1B52 3A BE 21	X1b52:	lda	X21be
-  4078 1B55 B7			ora	a
-  4079 1B56 C0			rnz
-  4080 1B57 E1			pop	h
-  4081 1B58 C9			ret
+  4132 1B52 3A BE 21	X1b52:	lda	X21be
+  4133 1B55 B7			ora	a
+  4134 1B56 C0			rnz
+  4135 1B57 E1			pop	h
+  4136 1B58 C9			ret
 			
-  4083 1B59 3A BE 21	X1b59:	lda	X21be
-  4084 1B5C B7			ora	a
-  4085 1B5D C8			rz
-  4086 1B5E E1			pop	h
-  4087 1B5F C9			ret
+  4138 1B59 3A BE 21	X1b59:	lda	X21be
+  4139 1B5C B7			ora	a
+  4140 1B5D C8			rz
+  4141 1B5E E1			pop	h
+  4142 1B5F C9			ret
 			
-  4089 1B60 3A 69 20	X1b60:	lda	X2069
-  4090 1B63 E6 20		ani	20h
-  4091 1B65 C8			rz
-  4092 1B66 78			mov	a,b
-  4093 1B67 FE 53		cpi	53h
-  4094 1B69 C2 72 1B		jnz	X1b72
-  4095 1B6C CD 54 17		call	X1754
-  4096 1B6F C3 81 1B		jmp	X1b81
+  4144 1B60 3A 69 20	X1b60:	lda	X2069
+  4145 1B63 E6 20		ani	20h
+  4146 1B65 C8			rz
+  4147 1B66 78			mov	a,b
+  4148 1B67 FE 53		cpi	53h
+  4149 1B69 C2 72 1B		jnz	X1b72
+  4150 1B6C CD 54 17		call	X1754
+  4151 1B6F C3 81 1B		jmp	X1b81
 			
-  4098 1B72 FE 52	X1b72:	cpi	52h
-  4099 1B74 C2 86 1B		jnz	X1b86
-  4100 1B77 CD 5B 17		call	X175b
-  4101 1B7A FB			ei
-  4102 1B7B CD A2 03		call	X03a2
-  4103 1B7E CD 2B 1A		call	X1a2b
-  4104 1B81 FB		X1b81:	ei
-  4105 1B82 CD F9 1B		call	X1bf9
-  4106 1B85 C9			ret
+  4153 1B72 FE 52	X1b72:	cpi	52h
+  4154 1B74 C2 86 1B		jnz	X1b86
+  4155 1B77 CD 5B 17		call	X175b
+  4156 1B7A FB			ei
+  4157 1B7B CD A2 03		call	X03a2
+  4158 1B7E CD 2B 1A		call	X1a2b
+  4159 1B81 FB		X1b81:	ei
+  4160 1B82 CD F9 1B		call	X1bf9
+  4161 1B85 C9			ret
 			
-  4108 1B86 FE 41	X1b86:	cpi	41h
-  4109 1B88 C0			rnz
-  4110 1B89 CD 59 1B		call	X1b59
-  4111 1B8C CD 4B 09		call	X094b
-  4112 1B8F 3E 41		mvi	a,41h
-  4113 1B91 CD E6 05		call	X05e6
-  4114 1B94 3E 3D		mvi	a,3dh
-  4115 1B96 CD E6 05		call	X05e6
-  4116 1B99 3E 20		mvi	a,20h
-  4117 1B9B CD E6 05		call	X05e6
-  4118 1B9E 21 9F 1E		lxi	h,X1e9f
-  4119 1BA1 22 40 21		shld	X2140
-  4120 1BA4 E1			pop	h
-  4121 1BA5 C9			ret
+  4163 1B86 FE 41	X1b86:	cpi	41h
+  4164 1B88 C0			rnz
+  4165 1B89 CD 59 1B		call	X1b59
+  4166 1B8C CD 4B 09		call	X094b
+  4167 1B8F 3E 41		mvi	a,41h
+  4168 1B91 CD E6 05		call	X05e6
+  4169 1B94 3E 3D		mvi	a,3dh
+  4170 1B96 CD E6 05		call	X05e6
+  4171 1B99 3E 20		mvi	a,20h
+  4172 1B9B CD E6 05		call	X05e6
+  4173 1B9E 21 9F 1E		lxi	h,X1e9f
+  4174 1BA1 22 40 21		shld	X2140
+  4175 1BA4 E1			pop	h
+  4176 1BA5 C9			ret
 			
-  4123 1BA6 98			sbb	b
-  4124 1BA7 FE 61		cpi	61h
-  4125 1BA9 F8			rm
-  4126 1BAA FE 7B		cpi	7bh
-  4127 1BAC F0			rp
-  4128 1BAD E6 DF		ani	0dfh
-  4129 1BAF C9			ret
+  4178 1BA6 98			sbb	b
+  4179 1BA7 FE 61		cpi	61h
+  4180 1BA9 F8			rm
+  4181 1BAA FE 7B		cpi	7bh
+  4182 1BAC F0			rp
+  4183 1BAD E6 DF		ani	0dfh
+  4184 1BAF C9			ret
 			
-  4131 1BB0 CD 94 03	X1bb0:	call	X0394
-  4132 1BB3 21 EE 19		lxi	h,X19ee
-  4133 1BB6 22 40 21		shld	X2140
-  4134 1BB9 C9			ret
+  4186 1BB0 CD 94 03	X1bb0:	call	X0394
+  4187 1BB3 21 EE 19		lxi	h,X19ee
+  4188 1BB6 22 40 21		shld	X2140
+  4189 1BB9 C9			ret
 			
-  4136 1BBA 2A 4E 20	X1bba:	lhld	X204e
-  4137 1BBD C3 C3 1B		jmp	X1bc3
+  4191 1BBA 2A 4E 20	X1bba:	lhld	scratch_start	; load [0x204e]
+  4192 1BBD C3 C3 1B		jmp	X1bc3
 			
-  4139 1BC0 21 CC 21	X1bc0:	lxi	h,X21cc
-  4140 1BC3 7C		X1bc3:	mov	a,h
-  4141 1BC4 E6 0F		ani	0fh
-  4142 1BC6 F6 20		ori	20h
-  4143 1BC8 67			mov	h,a
-  4144 1BC9 C9			ret
+  4194 1BC0 21 CC 21	X1bc0:	lxi	h,X21cc
+  4195 1BC3 7C		X1bc3:	mov	a,h
+  4196 1BC4 E6 0F		ani	0fh
+  4197 1BC6 F6 20		ori	20h
+  4198 1BC8 67			mov	h,a
+  4199 1BC9 C9			ret
 			
-  4146 1BCA CD BA 1B	X1bca:	call	X1bba
-  4147 1BCD CD C8 0F		call	X0fc8
-  4148 1BD0 E5			push	h
-  4149 1BD1 36 7F		mvi	m,7fh
-  4150 1BD3 23			inx	h
-  4151 1BD4 EB			xchg
-  4152 1BD5 CD C0 1B		call	X1bc0
-  4153 1BD8 7C			mov	a,h
-  4154 1BD9 E6 0F		ani	0fh
-  4155 1BDB F6 70		ori	70h
-  4156 1BDD 12			stax	d
-  4157 1BDE 13			inx	d
-  4158 1BDF 7D			mov	a,l
-  4159 1BE0 12			stax	d
-  4160 1BE1 E1			pop	h
-  4161 1BE2 3A 50 20		lda	X2050
-  4162 1BE5 5F			mov	e,a
-  4163 1BE6 06 54		mvi	b,54h
-  4164 1BE8 7B		X1be8:	mov	a,e
-  4165 1BE9 CD 27 0E		call	X0e27
-  4166 1BEC A6			ana	m
-  4167 1BED CA F4 1B		jz	X1bf4
-  4168 1BF0 7B			mov	a,e
-  4169 1BF1 CD EA 1E		call	X1eea
-  4170 1BF4 1D		X1bf4:	dcr	e
-  4171 1BF5 C2 E8 1B		jnz	X1be8
-  4172 1BF8 C9			ret
+  4201 1BCA CD BA 1B	X1bca:	call	X1bba
+  4202 1BCD CD C8 0F		call	X0fc8
+  4203 1BD0 E5			push	h
+  4204 1BD1 36 7F		mvi	m,7fh
+  4205 1BD3 23			inx	h
+  4206 1BD4 EB			xchg
+  4207 1BD5 CD C0 1B		call	X1bc0
+  4208 1BD8 7C			mov	a,h
+  4209 1BD9 E6 0F		ani	0fh
+  4210 1BDB F6 70		ori	70h
+  4211 1BDD 12			stax	d
+  4212 1BDE 13			inx	d
+  4213 1BDF 7D			mov	a,l
+  4214 1BE0 12			stax	d
+  4215 1BE1 E1			pop	h
+  4216 1BE2 3A 50 20		lda	X2050
+  4217 1BE5 5F			mov	e,a
+  4218 1BE6 06 54		mvi	b,54h
+  4219 1BE8 7B		X1be8:	mov	a,e
+  4220 1BE9 CD 27 0E		call	X0e27
+  4221 1BEC A6			ana	m
+  4222 1BED CA F4 1B		jz	X1bf4
+  4223 1BF0 7B			mov	a,e
+  4224 1BF1 CD EA 1E		call	X1eea
+  4225 1BF4 1D		X1bf4:	dcr	e
+  4226 1BF5 C2 E8 1B		jnz	X1be8
+  4227 1BF8 C9			ret
 			
-  4174 1BF9 01 AD 1C	X1bf9:	lxi	b,X1cad
-  4175 1BFC 21 53 22		lxi	h,X2253
-  4176 1BFF 3E FA		mvi	a,0fah
-  4177 1C01 CD 71 1C		call	X1c71
-  4178 1C04 0E 01		mvi	c,1
-  4179 1C06 06 10		mvi	b,10h
-  4180 1C08 CD 8A 1C		call	X1c8a
-  4181 1C0B 01 AD 1C		lxi	b,X1cad
-  4182 1C0E 3E FA		mvi	a,0fah
-  4183 1C10 CD 71 1C		call	X1c71
-  4184 1C13 0E 01		mvi	c,1
-  4185 1C15 06 50		mvi	b,50h
-  4186 1C17 CD 8A 1C		call	X1c8a
-  4187 1C1A 01 B6 1C		lxi	b,X1cb6
-  4188 1C1D 3E FD		mvi	a,0fdh
-  4189 1C1F CD 71 1C		call	X1c71
-  4190 1C22 0E 13		mvi	c,13h
-  4191 1C24 CD 88 1C		call	X1c88
-  4192 1C27 36 7F		mvi	m,7fh
-  4193 1C29 23			inx	h
-  4194 1C2A EB			xchg
-  4195 1C2B CD BA 1B		call	X1bba
-  4196 1C2E 7C			mov	a,h
-  4197 1C2F F6 70		ori	70h
-  4198 1C31 12			stax	d
-  4199 1C32 13			inx	d
-  4200 1C33 7D			mov	a,l
-  4201 1C34 12			stax	d
-  4202 1C35 CD C0 1B	X1c35:	call	X1bc0
-  4203 1C38 3A 50 20		lda	X2050
-  4204 1C3B 47			mov	b,a
-  4205 1C3C 3E 31		mvi	a,31h
-  4206 1C3E 77		X1c3e:	mov	m,a
-  4207 1C3F 23			inx	h
-  4208 1C40 4F			mov	c,a
-  4209 1C41 E6 0F		ani	0fh
-  4210 1C43 79			mov	a,c
-  4211 1C44 C2 49 1C		jnz	X1c49
-  4212 1C47 EE 80		xri	80h
-  4213 1C49 3C		X1c49:	inr	a
-  4214 1C4A 27			daa
-  4215 1C4B D2 50 1C		jnc	X1c50
-  4216 1C4E F6 80		ori	80h
-  4217 1C50 E6 8F	X1c50:	ani	8fh
-  4218 1C52 F6 30		ori	30h
-  4219 1C54 05			dcr	b
-  4220 1C55 C2 3E 1C		jnz	X1c3e
-  4221 1C58 CD 9F 1C		call	X1c9f
-  4222 1C5B CD CA 1B		call	X1bca
-  4223 1C5E 3E 01		mvi	a,1
-  4224 1C60 32 BE 21	X1c60:	sta	X21be
-  4225 1C63 21 53 22		lxi	h,X2253
-  4226 1C66 7C			mov	a,h
-  4227 1C67 65			mov	h,l
-  4228 1C68 E6 0F		ani	0fh
-  4229 1C6A F6 30		ori	30h
-  4230 1C6C 6F			mov	l,a
-  4231 1C6D 22 04 20		shld	X2004
-  4232 1C70 C9			ret
+  4229 1BF9 01 AD 1C	X1bf9:	lxi	b,X1cad
+  4230 1BFC 21 53 22		lxi	h,X2253
+  4231 1BFF 3E FA		mvi	a,0fah
+  4232 1C01 CD 71 1C		call	X1c71
+  4233 1C04 0E 01		mvi	c,1
+  4234 1C06 06 10		mvi	b,10h
+  4235 1C08 CD 8A 1C		call	X1c8a
+  4236 1C0B 01 AD 1C		lxi	b,X1cad
+  4237 1C0E 3E FA		mvi	a,0fah
+  4238 1C10 CD 71 1C		call	X1c71
+  4239 1C13 0E 01		mvi	c,1
+  4240 1C15 06 50		mvi	b,50h
+  4241 1C17 CD 8A 1C		call	X1c8a
+  4242 1C1A 01 B6 1C		lxi	b,X1cb6
+  4243 1C1D 3E FD		mvi	a,0fdh
+  4244 1C1F CD 71 1C		call	X1c71
+  4245 1C22 0E 13		mvi	c,13h
+  4246 1C24 CD 88 1C		call	X1c88
+  4247 1C27 36 7F		mvi	m,7fh
+  4248 1C29 23			inx	h
+  4249 1C2A EB			xchg
+  4250 1C2B CD BA 1B		call	X1bba
+  4251 1C2E 7C			mov	a,h
+  4252 1C2F F6 70		ori	70h
+  4253 1C31 12			stax	d
+  4254 1C32 13			inx	d
+  4255 1C33 7D			mov	a,l
+  4256 1C34 12			stax	d
+  4257 1C35 CD C0 1B	X1c35:	call	X1bc0
+  4258 1C38 3A 50 20		lda	X2050
+  4259 1C3B 47			mov	b,a
+  4260 1C3C 3E 31		mvi	a,31h
+  4261 1C3E 77		X1c3e:	mov	m,a
+  4262 1C3F 23			inx	h
+  4263 1C40 4F			mov	c,a
+  4264 1C41 E6 0F		ani	0fh
+  4265 1C43 79			mov	a,c
+  4266 1C44 C2 49 1C		jnz	X1c49
+  4267 1C47 EE 80		xri	80h
+  4268 1C49 3C		X1c49:	inr	a
+  4269 1C4A 27			daa
+  4270 1C4B D2 50 1C		jnc	X1c50
+  4271 1C4E F6 80		ori	80h
+  4272 1C50 E6 8F	X1c50:	ani	8fh
+  4273 1C52 F6 30		ori	30h
+  4274 1C54 05			dcr	b
+  4275 1C55 C2 3E 1C		jnz	X1c3e
+  4276 1C58 CD 9F 1C		call	X1c9f
+  4277 1C5B CD CA 1B		call	X1bca
+  4278 1C5E 3E 01		mvi	a,1
+  4279 1C60 32 BE 21	X1c60:	sta	X21be
+  4280 1C63 21 53 22		lxi	h,X2253
+  4281 1C66 7C			mov	a,h
+  4282 1C67 65			mov	h,l
+  4283 1C68 E6 0F		ani	0fh
+  4284 1C6A F6 30		ori	30h
+  4285 1C6C 6F			mov	l,a
+  4286 1C6D 22 04 20		shld	X2004
+  4287 1C70 C9			ret
 			
-  4234 1C71 E5		X1c71:	push	h
-  4235 1C72 11 00 10		lxi	d,X1000
-  4236 1C75 19			dad	d
-  4237 1C76 D1			pop	d
-  4238 1C77 F5		X1c77:	push	psw
-  4239 1C78 0A			ldax	b
-  4240 1C79 B7			ora	a
-  4241 1C7A CA 86 1C		jz	X1c86
-  4242 1C7D 12			stax	d
-  4243 1C7E F1			pop	psw
-  4244 1C7F 77			mov	m,a
-  4245 1C80 23			inx	h
-  4246 1C81 13			inx	d
-  4247 1C82 03			inx	b
-  4248 1C83 C3 77 1C		jmp	X1c77
+  4289 1C71 E5		X1c71:	push	h
+  4290 1C72 11 00 10		lxi	d,X1000
+  4291 1C75 19			dad	d
+  4292 1C76 D1			pop	d
+  4293 1C77 F5		X1c77:	push	psw
+  4294 1C78 0A			ldax	b
+  4295 1C79 B7			ora	a
+  4296 1C7A CA 86 1C		jz	X1c86
+  4297 1C7D 12			stax	d
+  4298 1C7E F1			pop	psw
+  4299 1C7F 77			mov	m,a
+  4300 1C80 23			inx	h
+  4301 1C81 13			inx	d
+  4302 1C82 03			inx	b
+  4303 1C83 C3 77 1C		jmp	X1c77
 			
-  4250 1C86 F1		X1c86:	pop	psw
-  4251 1C87 C9			ret
+  4305 1C86 F1		X1c86:	pop	psw
+  4306 1C87 C9			ret
 			
-  4253 1C88 06 70	X1c88:	mvi	b,70h
-  4254 1C8A EB		X1c8a:	xchg
-  4255 1C8B 36 7F	X1c8b:	mvi	m,7fh
-  4256 1C8D 23			inx	h
-  4257 1C8E 54			mov	d,h
-  4258 1C8F 5D			mov	e,l
-  4259 1C90 13			inx	d
-  4260 1C91 13			inx	d
-  4261 1C92 7A			mov	a,d
-  4262 1C93 E6 0F		ani	0fh
-  4263 1C95 B0			ora	b
-  4264 1C96 77			mov	m,a
-  4265 1C97 23			inx	h
-  4266 1C98 73			mov	m,e
-  4267 1C99 23			inx	h
-  4268 1C9A 0D			dcr	c
-  4269 1C9B C2 8B 1C		jnz	X1c8b
-  4270 1C9E C9			ret
+  4308 1C88 06 70	X1c88:	mvi	b,70h
+  4309 1C8A EB		X1c8a:	xchg
+  4310 1C8B 36 7F	X1c8b:	mvi	m,7fh
+  4311 1C8D 23			inx	h
+  4312 1C8E 54			mov	d,h
+  4313 1C8F 5D			mov	e,l
+  4314 1C90 13			inx	d
+  4315 1C91 13			inx	d
+  4316 1C92 7A			mov	a,d
+  4317 1C93 E6 0F		ani	0fh
+  4318 1C95 B0			ora	b
+  4319 1C96 77			mov	m,a
+  4320 1C97 23			inx	h
+  4321 1C98 73			mov	m,e
+  4322 1C99 23			inx	h
+  4323 1C9A 0D			dcr	c
+  4324 1C9B C2 8B 1C		jnz	X1c8b
+  4325 1C9E C9			ret
 			
-  4272 1C9F 36 7F	X1c9f:	mvi	m,7fh
-  4273 1CA1 54			mov	d,h
-  4274 1CA2 5D			mov	e,l
-  4275 1CA3 23			inx	h
-  4276 1CA4 7A			mov	a,d
-  4277 1CA5 E6 0F		ani	0fh
-  4278 1CA7 F6 70		ori	70h
-  4279 1CA9 77			mov	m,a
-  4280 1CAA 23			inx	h
-  4281 1CAB 73			mov	m,e
-  4282 1CAC C9			ret
+  4327 1C9F 36 7F	X1c9f:	mvi	m,7fh
+  4328 1CA1 54			mov	d,h
+  4329 1CA2 5D			mov	e,l
+  4330 1CA3 23			inx	h
+  4331 1CA4 7A			mov	a,d
+  4332 1CA5 E6 0F		ani	0fh
+  4333 1CA7 F6 70		ori	70h
+  4334 1CA9 77			mov	m,a
+  4335 1CAA 23			inx	h
+  4336 1CAB 73			mov	m,e
+  4337 1CAC C9			ret
 			X1cad:
-  4284 1CAD			db	'SET-UP A',0
+  4339 1CAD			db	'SET-UP A',0
             53 45 54 2D 
             55 50 20 41 
             00 
 			X1cb6:
-  4286 1CB6			db	'TO EXIT PRESS ',022h,'SET-UP',022h,0
+  4341 1CB6			db	'TO EXIT PRESS ',022h,'SET-UP',022h,0
             54 4F 20 45 
             58 49 54 20 
             50 52 45 53 
             53 20 22 53 
             45 54 2D 55 
             50 22 00 
-  4287 1CCD CD BA 1B		call	X1bba
-  4288 1CD0 C3 C8 0F		jmp	X0fc8
+  4342 1CCD CD BA 1B		call	X1bba
+  4343 1CD0 C3 C8 0F		jmp	X0fc8
 			
-  4290 1CD3 CD CD 1C	X1cd3:	call	X1ccd
-  4291 1CD6 CD C0 1B		call	X1bc0
-  4292 1CD9 E5			push	h
-  4293 1CDA 3E 4E		mvi	a,4eh
-  4294 1CDC CD CB 0F		call	X0fcb
-  4295 1CDF E1			pop	h
-  4296 1CE0 E5			push	h
-  4297 1CE1 23			inx	h
-  4298 1CE2 23			inx	h
-  4299 1CE3 1E 00		mvi	e,0
-  4300 1CE5 06 04		mvi	b,4
-  4301 1CE7 DB 42		in	42h
-  4302 1CE9 E6 08		ani	8
-  4303 1CEB F5			push	psw
-  4304 1CEC CA F0 1C		jz	X1cf0
-  4305 1CEF 04			inr	b
-  4306 1CF0 0E 04	X1cf0:	mvi	c,4
-  4307 1CF2 CD CC 1D	X1cf2:	call	X1dcc
-  4308 1CF5 F6 B0		ori	0b0h
-  4309 1CF7 77			mov	m,a
-  4310 1CF8 1C			inr	e
-  4311 1CF9 23			inx	h
-  4312 1CFA 0D			dcr	c
-  4313 1CFB C2 F2 1C		jnz	X1cf2
-  4314 1CFE 0E 04		mvi	c,4
-  4315 1D00 36 00	X1d00:	mvi	m,0
-  4316 1D02 1C			inr	e
-  4317 1D03 23			inx	h
-  4318 1D04 0D			dcr	c
-  4319 1D05 C2 00 1D		jnz	X1d00
-  4320 1D08 05			dcr	b
-  4321 1D09 C2 F0 1C		jnz	X1cf0
-  4322 1D0C 0E 04		mvi	c,4
-  4323 1D0E F1			pop	psw
-  4324 1D0F F5			push	psw
-  4325 1D10 C2 17 1D		jnz	X1d17
-  4326 1D13 79			mov	a,c
-  4327 1D14 C6 08		adi	8
-  4328 1D16 4F			mov	c,a
-  4329 1D17 36 00	X1d17:	mvi	m,0
-  4330 1D19 23			inx	h
-  4331 1D1A 0D			dcr	c
-  4332 1D1B C2 17 1D		jnz	X1d17
-  4333 1D1E 11 4B 1D		lxi	d,X1d4b
-  4334 1D21 3A AB 21		lda	X21ab
-  4335 1D24 CD 61 1D		call	X1d61
-  4336 1D27 11 56 1D		lxi	d,X1d56
-  4337 1D2A 3A AC 21		lda	X21ac
-  4338 1D2D CD 61 1D		call	X1d61
-  4339 1D30 CD 9F 1C		call	X1c9f
-  4340 1D33 11 08 00		lxi	d,X0008
-  4341 1D36 0E 04		mvi	c,4
-  4342 1D38 F1			pop	psw
-  4343 1D39 CA 3D 1D		jz	X1d3d
-  4344 1D3C 0C			inr	c
-  4345 1D3D 3E 31	X1d3d:	mvi	a,31h
-  4346 1D3F E1			pop	h
-  4347 1D40 77		X1d40:	mov	m,a
-  4348 1D41 3C			inr	a
-  4349 1D42 19			dad	d
-  4350 1D43 0D			dcr	c
-  4351 1D44 C2 40 1D		jnz	X1d40
-  4352 1D47 AF			xra	a
-  4353 1D48 C3 60 1C		jmp	X1c60
+  4345 1CD3 CD CD 1C	X1cd3:	call	X1ccd
+  4346 1CD6 CD C0 1B		call	X1bc0
+  4347 1CD9 E5			push	h
+  4348 1CDA 3E 4E		mvi	a,4eh
+  4349 1CDC CD CB 0F		call	X0fcb
+  4350 1CDF E1			pop	h
+  4351 1CE0 E5			push	h
+  4352 1CE1 23			inx	h
+  4353 1CE2 23			inx	h
+  4354 1CE3 1E 00		mvi	e,0
+  4355 1CE5 06 04		mvi	b,4
+  4356 1CE7 DB 42		in	42h
+  4357 1CE9 E6 08		ani	8
+  4358 1CEB F5			push	psw
+  4359 1CEC CA F0 1C		jz	X1cf0
+  4360 1CEF 04			inr	b
+  4361 1CF0 0E 04	X1cf0:	mvi	c,4
+  4362 1CF2 CD CC 1D	X1cf2:	call	X1dcc
+  4363 1CF5 F6 B0		ori	0b0h
+  4364 1CF7 77			mov	m,a
+  4365 1CF8 1C			inr	e
+  4366 1CF9 23			inx	h
+  4367 1CFA 0D			dcr	c
+  4368 1CFB C2 F2 1C		jnz	X1cf2
+  4369 1CFE 0E 04		mvi	c,4
+  4370 1D00 36 00	X1d00:	mvi	m,0
+  4371 1D02 1C			inr	e
+  4372 1D03 23			inx	h
+  4373 1D04 0D			dcr	c
+  4374 1D05 C2 00 1D		jnz	X1d00
+  4375 1D08 05			dcr	b
+  4376 1D09 C2 F0 1C		jnz	X1cf0
+  4377 1D0C 0E 04		mvi	c,4
+  4378 1D0E F1			pop	psw
+  4379 1D0F F5			push	psw
+  4380 1D10 C2 17 1D		jnz	X1d17
+  4381 1D13 79			mov	a,c
+  4382 1D14 C6 08		adi	8
+  4383 1D16 4F			mov	c,a
+  4384 1D17 36 00	X1d17:	mvi	m,0
+  4385 1D19 23			inx	h
+  4386 1D1A 0D			dcr	c
+  4387 1D1B C2 17 1D		jnz	X1d17
+  4388 1D1E 11 4B 1D		lxi	d,X1d4b
+  4389 1D21 3A AB 21		lda	X21ab
+  4390 1D24 CD 61 1D		call	X1d61
+  4391 1D27 11 56 1D		lxi	d,X1d56
+  4392 1D2A 3A AC 21		lda	X21ac
+  4393 1D2D CD 61 1D		call	X1d61
+  4394 1D30 CD 9F 1C		call	X1c9f
+  4395 1D33 11 08 00		lxi	d,8
+  4396 1D36 0E 04		mvi	c,4
+  4397 1D38 F1			pop	psw
+  4398 1D39 CA 3D 1D		jz	X1d3d
+  4399 1D3C 0C			inr	c
+  4400 1D3D 3E 31	X1d3d:	mvi	a,31h
+  4401 1D3F E1			pop	h
+  4402 1D40 77		X1d40:	mov	m,a
+  4403 1D41 3C			inr	a
+  4404 1D42 19			dad	d
+  4405 1D43 0D			dcr	c
+  4406 1D44 C2 40 1D		jnz	X1d40
+  4407 1D47 AF			xra	a
+  4408 1D48 C3 60 1C		jmp	X1c60
 			
-  4355 1D4B		X1d4b:	db	20h
+  4410 1D4B		X1d4b:	db	20h
             20 
-  4356 1D4C			db	20h
+  4411 1D4C			db	20h
             20 
-  4357 1D4D			db	20h
+  4412 1D4D			db	20h
             20 
-  4358 1D4E 54			mov	d,h
-  4359 1D4F			db	20h
+  4413 1D4E 54			mov	d,h
+  4414 1D4F			db	20h
             20 
-  4360 1D50 53			mov	d,e
-  4361 1D51 50			mov	d,b
-  4362 1D52 45			mov	b,l
-  4363 1D53 45			mov	b,l
-  4364 1D54 44			mov	b,h
-  4365 1D55			db	20h
+  4415 1D50 53			mov	d,e
+  4416 1D51 50			mov	d,b
+  4417 1D52 45			mov	b,l
+  4418 1D53 45			mov	b,l
+  4419 1D54 44			mov	b,h
+  4420 1D55			db	20h
             20 
-  4366 1D56		X1d56:	db	20h
+  4421 1D56		X1d56:	db	20h
             20 
-  4367 1D57			db	20h
+  4422 1D57			db	20h
             20 
-  4368 1D58			db	20h
+  4423 1D58			db	20h
             20 
-  4369 1D59 52			mov	d,d
-  4370 1D5A			db	20h
+  4424 1D59 52			mov	d,d
+  4425 1D5A			db	20h
             20 
-  4371 1D5B 53			mov	d,e
-  4372 1D5C 50			mov	d,b
-  4373 1D5D 45			mov	b,l
-  4374 1D5E 45			mov	b,l
-  4375 1D5F 44			mov	b,h
-  4376 1D60			db	20h
+  4426 1D5B 53			mov	d,e
+  4427 1D5C 50			mov	d,b
+  4428 1D5D 45			mov	b,l
+  4429 1D5E 45			mov	b,l
+  4430 1D5F 44			mov	b,h
+  4431 1D60			db	20h
             20 
-  4377 1D61 4F		X1d61:	mov	c,a
-  4378 1D62 06 0B		mvi	b,0bh
-  4379 1D64 CD 8B 03		call	memmov
-  4380 1D67 79			mov	a,c
-  4381 1D68 0F			rrc
-  4382 1D69 0F			rrc
-  4383 1D6A 4F			mov	c,a
-  4384 1D6B 0F			rrc
-  4385 1D6C 0F			rrc
-  4386 1D6D 81			add	c
-  4387 1D6E 4F			mov	c,a
-  4388 1D6F 06 00		mvi	b,0
-  4389 1D71 11 7C 1D		lxi	d,X1d7c
-  4390 1D74 EB			xchg
-  4391 1D75 09			dad	b
-  4392 1D76 EB			xchg
-  4393 1D77 06 05		mvi	b,5
-  4394 1D79 C3 8B 03		jmp	memmov
+  4432 1D61 4F		X1d61:	mov	c,a
+  4433 1D62 06 0B		mvi	b,0bh
+  4434 1D64 CD 8B 03		call	memmov
+  4435 1D67 79			mov	a,c
+  4436 1D68 0F			rrc
+  4437 1D69 0F			rrc
+  4438 1D6A 4F			mov	c,a
+  4439 1D6B 0F			rrc
+  4440 1D6C 0F			rrc
+  4441 1D6D 81			add	c
+  4442 1D6E 4F			mov	c,a
+  4443 1D6F 06 00		mvi	b,0
+  4444 1D71 11 7C 1D		lxi	d,X1d7c
+  4445 1D74 EB			xchg
+  4446 1D75 09			dad	b
+  4447 1D76 EB			xchg
+  4448 1D77 06 05		mvi	b,5
+  4449 1D79 C3 8B 03		jmp	memmov
 			
-  4396 1D7C		X1d7c:	db	20h
+  4451 1D7C		X1d7c:	db	20h
             20 
-  4397 1D7D			db	20h
+  4452 1D7D			db	20h
             20 
-  4398 1D7E			db	20h
+  4453 1D7E			db	20h
             20 
-  4399 1D7F 35			dcr	m
-  4400 1D80			db	30h
+  4454 1D7F 35			dcr	m
+  4455 1D80			db	30h
             30 
-  4401 1D81			db	20h
+  4456 1D81			db	20h
             20 
-  4402 1D82			db	20h
+  4457 1D82			db	20h
             20 
-  4403 1D83			db	20h
+  4458 1D83			db	20h
             20 
-  4404 1D84 37			stc
-  4405 1D85 35			dcr	m
-  4406 1D86			db	20h
+  4459 1D84 37			stc
+  4460 1D85 35			dcr	m
+  4461 1D86			db	20h
             20 
-  4407 1D87			db	20h
+  4462 1D87			db	20h
             20 
-  4408 1D88 31 31 30		lxi	sp,X3031
-  4409 1D8B			db	20h
+  4463 1D88 31 31 30		lxi	sp,X3031
+  4464 1D8B			db	20h
             20 
-  4410 1D8C			db	20h
+  4465 1D8C			db	20h
             20 
-  4411 1D8D 31 33 34		lxi	sp,X3433
-  4412 1D90			db	20h
+  4466 1D8D 31 33 34		lxi	sp,X3433
+  4467 1D90			db	20h
             20 
-  4413 1D91			db	20h
+  4468 1D91			db	20h
             20 
-  4414 1D92 31 35 30		lxi	sp,X3035
-  4415 1D95			db	20h
+  4469 1D92 31 35 30		lxi	sp,X3035
+  4470 1D95			db	20h
             20 
-  4416 1D96			db	20h
+  4471 1D96			db	20h
             20 
-  4417 1D97 32 30 30		sta	X3030
-  4418 1D9A			db	20h
+  4472 1D97 32 30 30		sta	X3030
+  4473 1D9A			db	20h
             20 
-  4419 1D9B			db	20h
+  4474 1D9B			db	20h
             20 
-  4420 1D9C 33			inx	sp
-  4421 1D9D			db	30h
+  4475 1D9C 33			inx	sp
+  4476 1D9D			db	30h
             30 
-  4422 1D9E			db	30h
+  4477 1D9E			db	30h
             30 
-  4423 1D9F			db	20h
+  4478 1D9F			db	20h
             20 
-  4424 1DA0			db	20h
+  4479 1DA0			db	20h
             20 
-  4425 1DA1 36 30		mvi	m,30h
-  4426 1DA3			db	30h
+  4480 1DA1 36 30		mvi	m,30h
+  4481 1DA3			db	30h
             30 
-  4427 1DA4			db	20h
+  4482 1DA4			db	20h
             20 
-  4428 1DA5 31 32 30		lxi	sp,X3032
-  4429 1DA8			db	30h
+  4483 1DA5 31 32 30		lxi	sp,X3032
+  4484 1DA8			db	30h
             30 
-  4430 1DA9			db	20h
+  4485 1DA9			db	20h
             20 
-  4431 1DAA 31 38 30		lxi	sp,X3038
-  4432 1DAD			db	30h
+  4486 1DAA 31 38 30		lxi	sp,X3038
+  4487 1DAD			db	30h
             30 
-  4433 1DAE			db	20h
+  4488 1DAE			db	20h
             20 
-  4434 1DAF 32 30 30		sta	X3030
-  4435 1DB2			db	30h
+  4489 1DAF 32 30 30		sta	X3030
+  4490 1DB2			db	30h
             30 
-  4436 1DB3			db	20h
+  4491 1DB3			db	20h
             20 
-  4437 1DB4 32 34 30		sta	X3034
-  4438 1DB7			db	30h
+  4492 1DB4 32 34 30		sta	X3034
+  4493 1DB7			db	30h
             30 
-  4439 1DB8			db	20h
+  4494 1DB8			db	20h
             20 
-  4440 1DB9 33			inx	sp
-  4441 1DBA 36 30		mvi	m,30h
-  4442 1DBC			db	30h
+  4495 1DB9 33			inx	sp
+  4496 1DBA 36 30		mvi	m,30h
+  4497 1DBC			db	30h
             30 
-  4443 1DBD			db	20h
+  4498 1DBD			db	20h
             20 
-  4444 1DBE 34			inr	m
-  4445 1DBF			db	38h
+  4499 1DBE 34			inr	m
+  4500 1DBF			db	38h
             38 
-  4446 1DC0			db	30h
+  4501 1DC0			db	30h
             30 
-  4447 1DC1			db	30h
+  4502 1DC1			db	30h
             30 
-  4448 1DC2			db	20h
+  4503 1DC2			db	20h
             20 
-  4449 1DC3 39			dad	sp
-  4450 1DC4 36 30		mvi	m,30h
-  4451 1DC6			db	30h
+  4504 1DC3 39			dad	sp
+  4505 1DC4 36 30		mvi	m,30h
+  4506 1DC6			db	30h
             30 
-  4452 1DC7 31 39 32		lxi	sp,X3239
-  4453 1DCA			db	30h
+  4507 1DC7 31 39 32		lxi	sp,X3239
+  4508 1DCA			db	30h
             30 
-  4454 1DCB			db	30h
+  4509 1DCB			db	30h
             30 
-  4455 1DCC E5		X1dcc:	push	h
-  4456 1DCD 21 A6 21		lxi	h,X21a6
-  4457 1DD0 53			mov	d,e
-  4458 1DD1 7B			mov	a,e
-  4459 1DD2 CD 2B 0E		call	X0e2b
-  4460 1DD5 A6			ana	m
-  4461 1DD6 E1			pop	h
-  4462 1DD7 C8			rz
-  4463 1DD8 3E 01		mvi	a,1
-  4464 1DDA C9			ret
+  4510 1DCC E5		X1dcc:	push	h
+  4511 1DCD 21 A6 21		lxi	h,X21a6
+  4512 1DD0 53			mov	d,e
+  4513 1DD1 7B			mov	a,e
+  4514 1DD2 CD 2B 0E		call	X0e2b
+  4515 1DD5 A6			ana	m
+  4516 1DD6 E1			pop	h
+  4517 1DD7 C8			rz
+  4518 1DD8 3E 01		mvi	a,1
+  4519 1DDA C9			ret
 			
-  4466 1DDB 3A AC 21	X1ddb:	lda	X21ac
-  4467 1DDE E6 F0		ani	0f0h
-  4468 1DE0 0F			rrc
-  4469 1DE1 0F			rrc
-  4470 1DE2 0F			rrc
-  4471 1DE3 0F			rrc
-  4472 1DE4 47			mov	b,a
-  4473 1DE5 3A AB 21		lda	X21ab
-  4474 1DE8 E6 F0		ani	0f0h
-  4475 1DEA B0			ora	b
-  4476 1DEB 32 58 21		sta	X2158
-  4477 1DEE E6 F0		ani	0f0h
-  4478 1DF0 FE 20		cpi	20h
-  4479 1DF2 3A A4 21		lda	X21a4
-  4480 1DF5 CA FF 1D		jz	X1dff
-  4481 1DF8 E6 3F		ani	3fh
-  4482 1DFA F6 80		ori	80h
-  4483 1DFC C3 03 1E		jmp	X1e03
+  4521 1DDB 3A AC 21	X1ddb:	lda	X21ac
+  4522 1DDE E6 F0		ani	0f0h
+  4523 1DE0 0F			rrc
+  4524 1DE1 0F			rrc
+  4525 1DE2 0F			rrc
+  4526 1DE3 0F			rrc
+  4527 1DE4 47			mov	b,a
+  4528 1DE5 3A AB 21		lda	X21ab
+  4529 1DE8 E6 F0		ani	0f0h
+  4530 1DEA B0			ora	b
+  4531 1DEB 32 58 21		sta	X2158
+  4532 1DEE E6 F0		ani	0f0h
+  4533 1DF0 FE 20		cpi	20h
+  4534 1DF2 3A A4 21		lda	X21a4
+  4535 1DF5 CA FF 1D		jz	X1dff
+  4536 1DF8 E6 3F		ani	3fh
+  4537 1DFA F6 80		ori	80h
+  4538 1DFC C3 03 1E		jmp	X1e03
 			
-  4485 1DFF E6 3F	X1dff:	ani	3fh
-  4486 1E01 F6 C0		ori	0c0h
-  4487 1E03 32 A4 21	X1e03:	sta	X21a4
-  4488 1E06 DB 42		in	42h
-  4489 1E08 E6 08		ani	8
-  4490 1E0A CA 19 1E		jz	X1e19
-  4491 1E0D 21 A7 21		lxi	h,X21a7
-  4492 1E10 7E			mov	a,m
-  4493 1E11 F6 10		ori	10h
-  4494 1E13 77			mov	m,a
-  4495 1E14 3E 6E		mvi	a,6eh
-  4496 1E16 C3 31 1E		jmp	X1e31
+  4540 1DFF E6 3F	X1dff:	ani	3fh
+  4541 1E01 F6 C0		ori	0c0h
+  4542 1E03 32 A4 21	X1e03:	sta	X21a4
+  4543 1E06 DB 42		in	42h
+  4544 1E08 E6 08		ani	8
+  4545 1E0A CA 19 1E		jz	X1e19
+  4546 1E0D 21 A7 21		lxi	h,X21a7
+  4547 1E10 7E			mov	a,m
+  4548 1E11 F6 10		ori	10h
+  4549 1E13 77			mov	m,a
+  4550 1E14 3E 6E		mvi	a,6eh
+  4551 1E16 C3 31 1E		jmp	X1e31
 			
-  4498 1E19 3A A9 21	X1e19:	lda	X21a9
-  4499 1E1C E6 C0		ani	0c0h
-  4500 1E1E 47			mov	b,a
-  4501 1E1F 3A A9 21		lda	X21a9
-  4502 1E22 E6 20		ani	20h
-  4503 1E24 0F			rrc
-  4504 1E25 F6 20		ori	20h
-  4505 1E27 B0			ora	b
-  4506 1E28 0F			rrc
-  4507 1E29 0F			rrc
-  4508 1E2A 47			mov	b,a
-  4509 1E2B 3A A4 21		lda	X21a4
-  4510 1E2E E6 C3		ani	0c3h
-  4511 1E30 B0			ora	b
-  4512 1E31 32 A4 21	X1e31:	sta	X21a4
-  4513 1E34 3A A9 21		lda	X21a9
-  4514 1E37 E6 10		ani	10h
-  4515 1E39 CA 3E 1E		jz	X1e3e
-  4516 1E3C 3E 10		mvi	a,10h
-  4517 1E3E C6 20	X1e3e:	adi	20h
-  4518 1E40 32 7C 20		sta	X207c
-  4519 1E43 3A A6 21		lda	X21a6
-  4520 1E46 E6 10		ani	10h
-  4521 1E48 CA 4D 1E		jz	X1e4d
-  4522 1E4B 3E 01		mvi	a,1
-  4523 1E4D CD 6E 1E	X1e4d:	call	X1e6e
-  4524 1E50 CD 29 03		call	X0329
-  4525 1E53 3A F8 20		lda	X20f8
-  4526 1E56 FE 15		cpi	15h
-  4527 1E58 CC 42 03		cz	X0342
-  4528 1E5B FE 1D		cpi	1dh
-  4529 1E5D CC 42 03		cz	X0342
-  4530 1E60 FE 0C		cpi	0ch
-  4531 1E62 CC F2 0B		cz	X0bf2
-  4532 1E65 FE 12		cpi	12h
-  4533 1E67 CC F2 0B		cz	X0bf2
-  4534 1E6A CD 36 16		call	X1636
-  4535 1E6D C9			ret
+  4553 1E19 3A A9 21	X1e19:	lda	X21a9
+  4554 1E1C E6 C0		ani	0c0h
+  4555 1E1E 47			mov	b,a
+  4556 1E1F 3A A9 21		lda	X21a9
+  4557 1E22 E6 20		ani	20h
+  4558 1E24 0F			rrc
+  4559 1E25 F6 20		ori	20h
+  4560 1E27 B0			ora	b
+  4561 1E28 0F			rrc
+  4562 1E29 0F			rrc
+  4563 1E2A 47			mov	b,a
+  4564 1E2B 3A A4 21		lda	X21a4
+  4565 1E2E E6 C3		ani	0c3h
+  4566 1E30 B0			ora	b
+  4567 1E31 32 A4 21	X1e31:	sta	X21a4
+  4568 1E34 3A A9 21		lda	X21a9
+  4569 1E37 E6 10		ani	10h
+  4570 1E39 CA 3E 1E		jz	X1e3e
+  4571 1E3C 3E 10		mvi	a,10h
+  4572 1E3E C6 20	X1e3e:	adi	20h
+  4573 1E40 32 7C 20		sta	X207c
+  4574 1E43 3A A6 21		lda	X21a6
+  4575 1E46 E6 10		ani	10h
+  4576 1E48 CA 4D 1E		jz	X1e4d
+  4577 1E4B 3E 01		mvi	a,1
+  4578 1E4D CD 6E 1E	X1e4d:	call	X1e6e
+  4579 1E50 CD 29 03		call	X0329
+  4580 1E53 3A F8 20		lda	X20f8
+  4581 1E56 FE 15		cpi	15h
+  4582 1E58 CC 42 03		cz	X0342
+  4583 1E5B FE 1D		cpi	1dh
+  4584 1E5D CC 42 03		cz	X0342
+  4585 1E60 FE 0C		cpi	0ch
+  4586 1E62 CC F2 0B		cz	X0bf2
+  4587 1E65 FE 12		cpi	12h
+  4588 1E67 CC F2 0B		cz	X0bf2
+  4589 1E6A CD 36 16		call	X1636
+  4590 1E6D C9			ret
 			
-  4537 1E6E B7		X1e6e:	ora	a
-  4538 1E6F CA 79 1E		jz	X1e79
-  4539 1E72 32 5B 21		sta	X215b
-  4540 1E75 AF			xra	a
-  4541 1E76 C3 94 1E		jmp	X1e94
+  4592 1E6E B7		X1e6e:	ora	a
+  4593 1E6F CA 79 1E		jz	X1e79
+  4594 1E72 32 5B 21		sta	X215b
+  4595 1E75 AF			xra	a
+  4596 1E76 C3 94 1E		jmp	X1e94
 			
-  4543 1E79 DB 42	X1e79:	in	42h
-  4544 1E7B E6 02		ani	2
-  4545 1E7D C2 90 1E		jnz	X1e90
-  4546 1E80 32 59 21		sta	X2159
-  4547 1E83 3E 01		mvi	a,1
-  4548 1E85 32 5B 21		sta	X215b
-  4549 1E88 3E 02		mvi	a,2
-  4550 1E8A 32 5A 21		sta	X215a
-  4551 1E8D C3 6B 03		jmp	X036b
+  4598 1E79 DB 42	X1e79:	in	42h
+  4599 1E7B E6 02		ani	2
+  4600 1E7D C2 90 1E		jnz	X1e90
+  4601 1E80 32 59 21		sta	X2159
+  4602 1E83 3E 01		mvi	a,1
+  4603 1E85 32 5B 21		sta	X215b
+  4604 1E88 3E 02		mvi	a,2
+  4605 1E8A 32 5A 21		sta	X215a
+  4606 1E8D C3 6B 03		jmp	X036b
 			
-  4553 1E90 AF		X1e90:	xra	a
-  4554 1E91 32 5B 21		sta	X215b
-  4555 1E94 32 5A 21	X1e94:	sta	X215a
-  4556 1E97 3E 80		mvi	a,80h
-  4557 1E99 32 59 21		sta	X2159
-  4558 1E9C C3 6B 03		jmp	X036b
+  4608 1E90 AF		X1e90:	xra	a
+  4609 1E91 32 5B 21		sta	X215b
+  4610 1E94 32 5A 21	X1e94:	sta	X215a
+  4611 1E97 3E 80		mvi	a,80h
+  4612 1E99 32 59 21		sta	X2159
+  4613 1E9C C3 6B 03		jmp	X036b
 			
-  4560 1E9F CD DD 1E	X1e9f:	call	X1edd
-  4561 1EA2 21 7B 21		lxi	h,X217b
-  4562 1EA5 77			mov	m,a
-  4563 1EA6 23			inx	h
-  4564 1EA7 22 B4 21		shld	X21b4
-  4565 1EAA 47			mov	b,a
-  4566 1EAB 11 14 00		lxi	d,X0014
-  4567 1EAE CD 83 10		call	X1083
-  4568 1EB1 21 B8 1E		lxi	h,X1eb8
-  4569 1EB4 22 40 21		shld	X2140
-  4570 1EB7 C9			ret
+  4615 1E9F CD DD 1E	X1e9f:	call	X1edd
+  4616 1EA2 21 7B 21		lxi	h,X217b
+  4617 1EA5 77			mov	m,a
+  4618 1EA6 23			inx	h
+  4619 1EA7 22 B4 21		shld	X21b4
+  4620 1EAA 47			mov	b,a
+  4621 1EAB 11 14 00		lxi	d,20		; DE = 20(0x0014)
+  4622 1EAE CD 83 10		call	memset		; call memset(0x1083)
+  4623 1EB1 21 B8 1E		lxi	h,X1eb8
+  4624 1EB4 22 40 21		shld	X2140
+  4625 1EB7 C9			ret
 			
-  4572 1EB8 CD DD 1E	X1eb8:	call	X1edd
-  4573 1EBB 2A B4 21		lhld	X21b4
-  4574 1EBE 47			mov	b,a
-  4575 1EBF 3A 7B 21		lda	X217b
-  4576 1EC2 4F			mov	c,a
-  4577 1EC3 B8			cmp	b
-  4578 1EC4 CA D3 1E		jz	X1ed3
-  4579 1EC7 7D			mov	a,l
-  4580 1EC8 FE 90		cpi	90h
-  4581 1ECA CA D3 1E		jz	X1ed3
-  4582 1ECD 70			mov	m,b
-  4583 1ECE 23			inx	h
-  4584 1ECF 22 B4 21		shld	X21b4
-  4585 1ED2 C9			ret
+  4627 1EB8 CD DD 1E	X1eb8:	call	X1edd
+  4628 1EBB 2A B4 21		lhld	X21b4
+  4629 1EBE 47			mov	b,a
+  4630 1EBF 3A 7B 21		lda	X217b
+  4631 1EC2 4F			mov	c,a
+  4632 1EC3 B8			cmp	b
+  4633 1EC4 CA D3 1E		jz	X1ed3
+  4634 1EC7 7D			mov	a,l
+  4635 1EC8 FE 90		cpi	90h
+  4636 1ECA CA D3 1E		jz	X1ed3
+  4637 1ECD 70			mov	m,b
+  4638 1ECE 23			inx	h
+  4639 1ECF 22 B4 21		shld	X21b4
+  4640 1ED2 C9			ret
 			
-  4587 1ED3 71		X1ed3:	mov	m,c
-  4588 1ED4 CD CD 1C		call	X1ccd
-  4589 1ED7 CD 4B 09		call	X094b
-  4590 1EDA C3 B0 1B		jmp	X1bb0
+  4642 1ED3 71		X1ed3:	mov	m,c
+  4643 1ED4 CD CD 1C		call	X1ccd
+  4644 1ED7 CD 4B 09		call	X094b
+  4645 1EDA C3 B0 1B		jmp	X1bb0
 			
-  4592 1EDD F5		X1edd:	push	psw
-  4593 1EDE FE 20		cpi	20h
-  4594 1EE0 D2 E5 1E		jnc	X1ee5
-  4595 1EE3 3E 01		mvi	a,1
-  4596 1EE5 CD E3 05	X1ee5:	call	X05e3
-  4597 1EE8 F1			pop	psw
-  4598 1EE9 C9			ret
+  4647 1EDD F5		X1edd:	push	psw
+  4648 1EDE FE 20		cpi	20h
+  4649 1EE0 D2 E5 1E		jnc	X1ee5
+  4650 1EE3 3E 01		mvi	a,1
+  4651 1EE5 CD E3 05	X1ee5:	call	X05e3
+  4652 1EE8 F1			pop	psw
+  4653 1EE9 C9			ret
 			
-  4600 1EEA E5		X1eea:	push	h
-  4601 1EEB 21 4E 20		lxi	h,X204e
-  4602 1EEE 4F			mov	c,a
-  4603 1EEF 3A A2 21		lda	X21a2
-  4604 1EF2 B7			ora	a
-  4605 1EF3 C2 FC 1E		jnz	X1efc
-  4606 1EF6 79			mov	a,c
-  4607 1EF7 FE 50		cpi	50h
-  4608 1EF9 F2 0F 1F		jp	X1f0f
-  4609 1EFC 7E		X1efc:	mov	a,m
-  4610 1EFD 23			inx	h
-  4611 1EFE 66			mov	h,m
-  4612 1EFF 6F			mov	l,a
-  4613 1F00 7C			mov	a,h
-  4614 1F01 E6 0F		ani	0fh
-  4615 1F03 F6 20		ori	20h
-  4616 1F05 67			mov	h,a
-  4617 1F06 79			mov	a,c
-  4618 1F07 85			add	l
-  4619 1F08 6F			mov	l,a
-  4620 1F09 D2 0D 1F		jnc	X1f0d
-  4621 1F0C 24			inr	h
-  4622 1F0D 70		X1f0d:	mov	m,b
-  4623 1F0E 78			mov	a,b
-  4624 1F0F E1		X1f0f:	pop	h
-  4625 1F10 C9			ret
+  4655 1EEA E5		X1eea:	push	h
+  4656 1EEB 21 4E 20		lxi	h,scratch_start	; HL -> 0x204e
+  4657 1EEE 4F			mov	c,a
+  4658 1EEF 3A A2 21		lda	X21a2
+  4659 1EF2 B7			ora	a
+  4660 1EF3 C2 FC 1E		jnz	X1efc
+  4661 1EF6 79			mov	a,c
+  4662 1EF7 FE 50		cpi	50h
+  4663 1EF9 F2 0F 1F		jp	X1f0f
+  4664 1EFC 7E		X1efc:	mov	a,m
+  4665 1EFD 23			inx	h
+  4666 1EFE 66			mov	h,m
+  4667 1EFF 6F			mov	l,a
+  4668 1F00 7C			mov	a,h
+  4669 1F01 E6 0F		ani	0fh
+  4670 1F03 F6 20		ori	20h
+  4671 1F05 67			mov	h,a
+  4672 1F06 79			mov	a,c
+  4673 1F07 85			add	l
+  4674 1F08 6F			mov	l,a
+  4675 1F09 D2 0D 1F		jnc	X1f0d
+  4676 1F0C 24			inr	h
+  4677 1F0D 70		X1f0d:	mov	m,b
+  4678 1F0E 78			mov	a,b
+  4679 1F0F E1		X1f0f:	pop	h
+  4680 1F10 C9			ret
 			
-  4627 1F11 D5		X1f11:	push	d
-  4628 1F12 AF			xra	a
-  4629 1F13 32 A5 21		sta	X21a5
-  4630 1F16 06 00		mvi	b,0
-  4631 1F18 78		X1f18:	mov	a,b
-  4632 1F19 32 58 21		sta	X2158
-  4633 1F1C D3 02		out	2
-  4634 1F1E 0E 01		mvi	c,1
-  4635 1F20 79		X1f20:	mov	a,c
-  4636 1F21 D3 00		out	0
-  4637 1F23 21 00 C0		lxi	h,Xc000
-  4638 1F26 C5		X1f26:	push	b
-  4639 1F27 E5			push	h
-  4640 1F28 CD 75 06		call	X0675
-  4641 1F2B E1			pop	h
-  4642 1F2C C1			pop	b
-  4643 1F2D C2 48 1F		jnz	X1f48
-  4644 1F30 23			inx	h
-  4645 1F31 7C			mov	a,h
-  4646 1F32 B5			ora	l
-  4647 1F33 C2 26 1F		jnz	X1f26
-  4648 1F36 3E 05	X1f36:	mvi	a,5
-  4649 1F38 D3 01		out	1
-  4650 1F3A 3A 58 21		lda	X2158
-  4651 1F3D D3 02		out	2
-  4652 1F3F 3E 25		mvi	a,25h
-  4653 1F41 32 A5 21		sta	X21a5
-  4654 1F44 AF			xra	a
-  4655 1F45 37			stc
-  4656 1F46 D1			pop	d
-  4657 1F47 C9			ret
+  4682 1F11 D5		X1f11:	push	d
+  4683 1F12 AF			xra	a
+  4684 1F13 32 A5 21		sta	X21a5
+  4685 1F16 06 00		mvi	b,0
+  4686 1F18 78		X1f18:	mov	a,b
+  4687 1F19 32 58 21		sta	X2158
+  4688 1F1C D3 02		out	2
+  4689 1F1E 0E 01		mvi	c,1
+  4690 1F20 79		X1f20:	mov	a,c
+  4691 1F21 D3 00		out	0
+  4692 1F23 21 00 C0		lxi	h,Xc000
+  4693 1F26 C5		X1f26:	push	b
+  4694 1F27 E5			push	h
+  4695 1F28 CD 75 06		call	X0675
+  4696 1F2B E1			pop	h
+  4697 1F2C C1			pop	b
+  4698 1F2D C2 48 1F		jnz	X1f48
+  4699 1F30 23			inx	h
+  4700 1F31 7C			mov	a,h
+  4701 1F32 B5			ora	l
+  4702 1F33 C2 26 1F		jnz	X1f26
+  4703 1F36 3E 05	X1f36:	mvi	a,5
+  4704 1F38 D3 01		out	1
+  4705 1F3A 3A 58 21		lda	X2158
+  4706 1F3D D3 02		out	2
+  4707 1F3F 3E 25		mvi	a,25h
+  4708 1F41 32 A5 21		sta	X21a5
+  4709 1F44 AF			xra	a
+  4710 1F45 37			stc
+  4711 1F46 D1			pop	d
+  4712 1F47 C9			ret
 			
-  4659 1F48 E6 7F	X1f48:	ani	7fh
-  4660 1F4A B9			cmp	c
-  4661 1F4B C2 36 1F		jnz	X1f36
-  4662 1F4E 79			mov	a,c
-  4663 1F4F 07			rlc
-  4664 1F50 FE 80		cpi	80h
-  4665 1F52 4F			mov	c,a
-  4666 1F53 C2 20 1F		jnz	X1f20
-  4667 1F56 78			mov	a,b
-  4668 1F57 C6 11		adi	11h
-  4669 1F59 47			mov	b,a
-  4670 1F5A FE 10		cpi	10h
-  4671 1F5C C2 18 1F		jnz	X1f18
-  4672 1F5F AF			xra	a
-  4673 1F60 D1			pop	d
-  4674 1F61 C9			ret
+  4714 1F48 E6 7F	X1f48:	ani	7fh
+  4715 1F4A B9			cmp	c
+  4716 1F4B C2 36 1F		jnz	X1f36
+  4717 1F4E 79			mov	a,c
+  4718 1F4F 07			rlc
+  4719 1F50 FE 80		cpi	80h
+  4720 1F52 4F			mov	c,a
+  4721 1F53 C2 20 1F		jnz	X1f20
+  4722 1F56 78			mov	a,b
+  4723 1F57 C6 11		adi	11h
+  4724 1F59 47			mov	b,a
+  4725 1F5A FE 10		cpi	10h
+  4726 1F5C C2 18 1F		jnz	X1f18
+  4727 1F5F AF			xra	a
+  4728 1F60 D1			pop	d
+  4729 1F61 C9			ret
 			
-  4676 1F62 D5		X1f62:	push	d
-  4677 1F63 16 07		mvi	d,7
-  4678 1F65 7A		X1f65:	mov	a,d
-  4679 1F66 CD 7B 1F		call	X1f7b
-  4680 1F69 CD A1 1F		call	X1fa1
-  4681 1F6C BA			cmp	d
-  4682 1F6D C2 36 1F		jnz	X1f36
-  4683 1F70 15			dcr	d
-  4684 1F71 C2 65 1F		jnz	X1f65
-  4685 1F74 3E 05		mvi	a,5
-  4686 1F76 D3 01		out	1
-  4687 1F78 AF			xra	a
-  4688 1F79 D1			pop	d
-  4689 1F7A C9			ret
+  4731 1F62 D5		X1f62:	push	d
+  4732 1F63 16 07		mvi	d,7
+  4733 1F65 7A		X1f65:	mov	a,d
+  4734 1F66 CD 7B 1F		call	X1f7b
+  4735 1F69 CD A1 1F		call	X1fa1
+  4736 1F6C BA			cmp	d
+  4737 1F6D C2 36 1F		jnz	X1f36
+  4738 1F70 15			dcr	d
+  4739 1F71 C2 65 1F		jnz	X1f65
+  4740 1F74 3E 05		mvi	a,5
+  4741 1F76 D3 01		out	1
+  4742 1F78 AF			xra	a
+  4743 1F79 D1			pop	d
+  4744 1F7A C9			ret
 			
-  4691 1F7B 47		X1f7b:	mov	b,a
-  4692 1F7C E6 02		ani	2
-  4693 1F7E 0F			rrc
-  4694 1F7F 0F			rrc
-  4695 1F80 0F			rrc
-  4696 1F81 0F			rrc
-  4697 1F82 F6 10		ori	10h
-  4698 1F84 32 C9 21		sta	X21c9
-  4699 1F87 D3 62		out	62h
-  4700 1F89 0E 05		mvi	c,5
-  4701 1F8B 78			mov	a,b
-  4702 1F8C E6 01		ani	1
-  4703 1F8E CA 93 1F		jz	X1f93
-  4704 1F91 0E 25		mvi	c,25h
-  4705 1F93 78		X1f93:	mov	a,b
-  4706 1F94 E6 04		ani	4
-  4707 1F96 CA 9D 1F		jz	X1f9d
-  4708 1F99 79			mov	a,c
-  4709 1F9A F6 02		ori	2
-  4710 1F9C 4F			mov	c,a
-  4711 1F9D 79		X1f9d:	mov	a,c
-  4712 1F9E D3 01		out	1
-  4713 1FA0 C9			ret
+  4746 1F7B 47		X1f7b:	mov	b,a
+  4747 1F7C E6 02		ani	2
+  4748 1F7E 0F			rrc
+  4749 1F7F 0F			rrc
+  4750 1F80 0F			rrc
+  4751 1F81 0F			rrc
+  4752 1F82 F6 10		ori	10h
+  4753 1F84 32 C9 21		sta	X21c9
+  4754 1F87 D3 62		out	62h
+  4755 1F89 0E 05		mvi	c,5
+  4756 1F8B 78			mov	a,b
+  4757 1F8C E6 01		ani	1
+  4758 1F8E CA 93 1F		jz	X1f93
+  4759 1F91 0E 25		mvi	c,25h
+  4760 1F93 78		X1f93:	mov	a,b
+  4761 1F94 E6 04		ani	4
+  4762 1F96 CA 9D 1F		jz	X1f9d
+  4763 1F99 79			mov	a,c
+  4764 1F9A F6 02		ori	2
+  4765 1F9C 4F			mov	c,a
+  4766 1F9D 79		X1f9d:	mov	a,c
+  4767 1F9E D3 01		out	1
+  4768 1FA0 C9			ret
 			
-  4715 1FA1 DB 22	X1fa1:	in	22h
-  4716 1FA3 47			mov	b,a
-  4717 1FA4 0E 01		mvi	c,1
-  4718 1FA6 78			mov	a,b
-  4719 1FA7 E6 90		ani	90h
-  4720 1FA9 CA B3 1F		jz	X1fb3
-  4721 1FAC FE 90		cpi	90h
-  4722 1FAE 3E FF		mvi	a,0ffh
-  4723 1FB0 C0			rnz
-  4724 1FB1 0E 00		mvi	c,0
-  4725 1FB3 78		X1fb3:	mov	a,b
-  4726 1FB4 E6 40		ani	40h
-  4727 1FB6 CA BD 1F		jz	X1fbd
-  4728 1FB9 79			mov	a,c
-  4729 1FBA F6 02		ori	2
-  4730 1FBC 4F			mov	c,a
-  4731 1FBD DB 01	X1fbd:	in	1
-  4732 1FBF 0F			rrc
-  4733 1FC0 0F			rrc
-  4734 1FC1 2F			cma
-  4735 1FC2 E6 20		ani	20h
-  4736 1FC4 A8			xra	b
-  4737 1FC5 E6 20		ani	20h
-  4738 1FC7 3E FF		mvi	a,0ffh
-  4739 1FC9 C0			rnz
-  4740 1FCA 78			mov	a,b
-  4741 1FCB E6 20		ani	20h
-  4742 1FCD C2 D4 1F		jnz	X1fd4
-  4743 1FD0 79			mov	a,c
-  4744 1FD1 F6 04		ori	4
-  4745 1FD3 4F			mov	c,a
-  4746 1FD4 B7		X1fd4:	ora	a
-  4747 1FD5 79			mov	a,c
-  4748 1FD6 C9			ret
+  4770 1FA1 DB 22	X1fa1:	in	22h
+  4771 1FA3 47			mov	b,a
+  4772 1FA4 0E 01		mvi	c,1
+  4773 1FA6 78			mov	a,b
+  4774 1FA7 E6 90		ani	90h
+  4775 1FA9 CA B3 1F		jz	X1fb3
+  4776 1FAC FE 90		cpi	90h
+  4777 1FAE 3E FF		mvi	a,0ffh
+  4778 1FB0 C0			rnz
+  4779 1FB1 0E 00		mvi	c,0
+  4780 1FB3 78		X1fb3:	mov	a,b
+  4781 1FB4 E6 40		ani	40h
+  4782 1FB6 CA BD 1F		jz	X1fbd
+  4783 1FB9 79			mov	a,c
+  4784 1FBA F6 02		ori	2
+  4785 1FBC 4F			mov	c,a
+  4786 1FBD DB 01	X1fbd:	in	1
+  4787 1FBF 0F			rrc
+  4788 1FC0 0F			rrc
+  4789 1FC1 2F			cma
+  4790 1FC2 E6 20		ani	20h
+  4791 1FC4 A8			xra	b
+  4792 1FC5 E6 20		ani	20h
+  4793 1FC7 3E FF		mvi	a,0ffh
+  4794 1FC9 C0			rnz
+  4795 1FCA 78			mov	a,b
+  4796 1FCB E6 20		ani	20h
+  4797 1FCD C2 D4 1F		jnz	X1fd4
+  4798 1FD0 79			mov	a,c
+  4799 1FD1 F6 04		ori	4
+  4800 1FD3 4F			mov	c,a
+  4801 1FD4 B7		X1fd4:	ora	a
+  4802 1FD5 79			mov	a,c
+  4803 1FD6 C9			ret
 			
 			; Last but not least, pad out to 8K (8192) bytes
 			
             1F FF		org	1fffh
-  4753 1FFF 00			nop
+  4808 1FFF 00			nop
 			
 			;	Miscellaneous equates
 			
@@ -4892,7 +4947,6 @@
             20 01	X2001	equ	2001h
             20 02	X2002	equ	2002h
             20 04	X2004	equ	2004h
-            20 4E	X204e	equ	204eh
             20 50	X2050	equ	2050h
             20 51	X2051	equ	2051h
             20 52	X2052	equ	2052h
@@ -4906,7 +4960,7 @@
             20 67	X2067	equ	2067h
             20 68	X2068	equ	2068h		; Keys flag buffer
             20 69	X2069	equ	2069h
-            20 6A	X206a	equ	206ah
+            20 6A	X206a	equ	206ah		; Start of the "three place New Key Address Buffer"
             20 6E	X206e	equ	206eh
             20 72	X2072	equ	2072h
             20 73	X2073	equ	2073h
@@ -4945,7 +4999,6 @@
             21 13	X2113	equ	2113h
             21 2B	X212b	equ	212bh
             21 2C	X212c	equ	212ch
-            21 2D	X212d	equ	212dh
             21 2F	X212f	equ	212fh
             21 30	X2130	equ	2130h
             21 31	X2131	equ	2131h
@@ -5000,7 +5053,6 @@
             21 B4	X21b4	equ	21b4h
             21 B8	X21b8	equ	21b8h
             21 B9	X21b9	equ	21b9h
-            21 BA	X21ba	equ	21bah
             21 BB	X21bb	equ	21bbh
             21 BC	X21bc	equ	21bch
             21 BD	X21bd	equ	21bdh
@@ -5066,733 +5118,727 @@
                                  Symbols table
 *******************************************************************************
 
-Names		Types	Values
------		-----	------
-X0011		EQU	00011h
-X00ff		EQU	000FFh
-X0111		EQU	00111h
-X0113		EQU	00113h
-X0ea0		EQU	00EA0h
-X1ccd		EQU	01CCDh
-X2001		EQU	02001h
-X2002		EQU	02002h
-X2004		EQU	02004h
-X204e		EQU	0204Eh
-X2050		EQU	02050h
-X2051		EQU	02051h
-X2052		EQU	02052h
-X2054		EQU	02054h
-X2056		EQU	02056h
-X2058		EQU	02058h
-X205a		EQU	0205Ah
-X205b		EQU	0205Bh
-X205c		EQU	0205Ch
-X2065		EQU	02065h
-X2067		EQU	02067h
-X2068		EQU	02068h
-X2069		EQU	02069h
-X206a		EQU	0206Ah
-X206e		EQU	0206Eh
-X2072		EQU	02072h
-X2073		EQU	02073h
-X2074		EQU	02074h
-X2075		EQU	02075h
-X2077		EQU	02077h
-X2078		EQU	02078h
-X2079		EQU	02079h
-X207a		EQU	0207Ah
-X207b		EQU	0207Bh
-X207c		EQU	0207Ch
-X207d		EQU	0207Dh
-X207e		EQU	0207Eh
-X207f		EQU	0207Fh
-X20c0		EQU	020C0h
-X20c1		EQU	020C1h
-X20c2		EQU	020C2h
-X20de		EQU	020DEh
-X20f2		EQU	020F2h
-X20f4		EQU	020F4h
-X20f5		EQU	020F5h
-X20f6		EQU	020F6h
-X20f8		EQU	020F8h
-X20f9		EQU	020F9h
-X20fa		EQU	020FAh
-X20fb		EQU	020FBh
-X20fc		EQU	020FCh
-X20fd		EQU	020FDh
-X20ff		EQU	020FFh
-X2101		EQU	02101h
-X2102		EQU	02102h
-X2104		EQU	02104h
-X210d		EQU	0210Dh
-X210e		EQU	0210Eh
-X2111		EQU	02111h
-X2113		EQU	02113h
-X212b		EQU	0212Bh
-X212c		EQU	0212Ch
-X212d		EQU	0212Dh
-X212f		EQU	0212Fh
-X2130		EQU	02130h
-X2131		EQU	02131h
-X2140		EQU	02140h
-X2142		EQU	02142h
-X2143		EQU	02143h
-X2144		EQU	02144h
-X2145		EQU	02145h
-X2146		EQU	02146h
-X2147		EQU	02147h
-X2148		EQU	02148h
-X2149		EQU	02149h
-X214b		EQU	0214Bh
-X214e		EQU	0214Eh
-X2150		EQU	02150h
-X2151		EQU	02151h
-X2152		EQU	02152h
-X2153		EQU	02153h
-X2154		EQU	02154h
-X2155		EQU	02155h
-X2156		EQU	02156h
-X2157		EQU	02157h
-X2158		EQU	02158h
-X2159		EQU	02159h
-X215a		EQU	0215Ah
-X215b		EQU	0215Bh
-X215c		EQU	0215Ch
-X2171		EQU	02171h
-X2172		EQU	02172h
-X2173		EQU	02173h
-X2174		EQU	02174h
-X2176		EQU	02176h
-X2177		EQU	02177h
-X2178		EQU	02178h
-X2179		EQU	02179h
-X217b		EQU	0217Bh
-X2191		EQU	02191h
-X21a2		EQU	021A2h
-X21a3		EQU	021A3h
-X21a4		EQU	021A4h
-X21a5		EQU	021A5h
-X21a6		EQU	021A6h
-X21a7		EQU	021A7h
-X21a8		EQU	021A8h
-X21a9		EQU	021A9h
-X21aa		EQU	021AAh
-X21ab		EQU	021ABh
-X21ac		EQU	021ACh
-X21ad		EQU	021ADh
-X21ae		EQU	021AEh
-X21af		EQU	021AFh
-X21b4		EQU	021B4h
-X21b8		EQU	021B8h
-X21b9		EQU	021B9h
-X21ba		EQU	021BAh
-X21bb		EQU	021BBh
-X21bc		EQU	021BCh
-X21bd		EQU	021BDh
-X21be		EQU	021BEh
-X21bf		EQU	021BFh
-X21c0		EQU	021C0h
-X21c1		EQU	021C1h
-X21c2		EQU	021C2h
-X21c3		EQU	021C3h
-X21c4		EQU	021C4h
-X21c5		EQU	021C5h
-X21c7		EQU	021C7h
-X21c8		EQU	021C8h
-X21c9		EQU	021C9h
-X21cb		EQU	021CBh
-X21cc		EQU	021CCh
-X21d3		EQU	021D3h
-X2253		EQU	02253h
-X225a		EQU	0225Ah
-X2265		EQU	02265h
-X22d0		EQU	022D0h
-X2839		EQU	02839h
-X3000		EQU	03000h
-X3030		EQU	03030h
-X3031		EQU	03031h
-X3032		EQU	03032h
-X3034		EQU	03034h
-X3035		EQU	03035h
-X3038		EQU	03038h
-X3200		EQU	03200h
-X3221		EQU	03221h
-X3239		EQU	03239h
-X3433		EQU	03433h
-X3a6a		EQU	03A6Ah
-X3c08		EQU	03C08h
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+X1837			Label	01837h
+X1844			Label	01844h
+X1848			Label	01848h
+X1860			Label	01860h
+X1869			Label	01869h
+X1879			Label	01879h
+X187e			Label	0187Eh
+X1888			Label	01888h
+X1895			Label	01895h
+X1898			Label	01898h
+X189d			Label	0189Dh
+X18a3			Label	018A3h
+X18ae			Label	018AEh
+X18bc			Label	018BCh
+X18c1			Label	018C1h
+X18c7			Label	018C7h
+X18d1			Label	018D1h
+X18d7			Label	018D7h
+X18e6			Label	018E6h
+X18ec			Label	018ECh
+X18f6			Label	018F6h
+X1900			Label	01900h
+X1916			Label	01916h
+X1928			Label	01928h
+X192b			Label	0192Bh
+X192d			Label	0192Dh
+X193c			Label	0193Ch
+X1957			Label	01957h
+X1962			Label	01962h
+X196a			Label	0196Ah
+X1977			Label	01977h
+X1981			Label	01981h
+X1993			Label	01993h
+X1999			Label	01999h
+X19a8			Label	019A8h
+X19ae			Label	019AEh
+X19c0			Label	019C0h
+X19c3			Label	019C3h
+X19c9			Label	019C9h
+X19d6			Label	019D6h
+X19dc			Label	019DCh
+X19ee			Label	019EEh
+X1a1a			Label	01A1Ah
+X1a20			Label	01A20h
+X1a2b			Label	01A2Bh
+X1a45			Label	01A45h
+X1a61			Label	01A61h
+X1a71			Label	01A71h
+X1aa1			Label	01AA1h
+X1aa2			Label	01AA2h
+X1ae6			Label	01AE6h
+X1ae8			Label	01AE8h
+X1b52			Label	01B52h
+X1b59			Label	01B59h
+X1b60			Label	01B60h
+X1b72			Label	01B72h
+X1b81			Label	01B81h
+X1b86			Label	01B86h
+X1bb0			Label	01BB0h
+X1bba			Label	01BBAh
+X1bc0			Label	01BC0h
+X1bc3			Label	01BC3h
+X1bca			Label	01BCAh
+X1be8			Label	01BE8h
+X1bf4			Label	01BF4h
+X1bf9			Label	01BF9h
+X1c35			Label	01C35h
+X1c3e			Label	01C3Eh
+X1c49			Label	01C49h
+X1c50			Label	01C50h
+X1c60			Label	01C60h
+X1c71			Label	01C71h
+X1c77			Label	01C77h
+X1c86			Label	01C86h
+X1c88			Label	01C88h
+X1c8a			Label	01C8Ah
+X1c8b			Label	01C8Bh
+X1c9f			Label	01C9Fh
+X1cad			Label	01CADh
+X1cb6			Label	01CB6h
+X1cd3			Label	01CD3h
+X1cf0			Label	01CF0h
+X1cf2			Label	01CF2h
+X1d00			Label	01D00h
+X1d17			Label	01D17h
+X1d3d			Label	01D3Dh
+X1d40			Label	01D40h
+X1d4b			Label	01D4Bh
+X1d56			Label	01D56h
+X1d61			Label	01D61h
+X1d7c			Label	01D7Ch
+X1dcc			Label	01DCCh
+X1ddb			Label	01DDBh
+X1dff			Label	01DFFh
+X1e03			Label	01E03h
+X1e19			Label	01E19h
+X1e31			Label	01E31h
+X1e3e			Label	01E3Eh
+X1e4d			Label	01E4Dh
+X1e6e			Label	01E6Eh
+X1e79			Label	01E79h
+X1e90			Label	01E90h
+X1e94			Label	01E94h
+X1e9f			Label	01E9Fh
+X1eb8			Label	01EB8h
+X1ed3			Label	01ED3h
+X1edd			Label	01EDDh
+X1ee5			Label	01EE5h
+X1eea			Label	01EEAh
+X1efc			Label	01EFCh
+X1f0d			Label	01F0Dh
+X1f0f			Label	01F0Fh
+X1f11			Label	01F11h
+X1f18			Label	01F18h
+X1f20			Label	01F20h
+X1f26			Label	01F26h
+X1f36			Label	01F36h
+X1f48			Label	01F48h
+X1f62			Label	01F62h
+X1f65			Label	01F65h
+X1f7b			Label	01F7Bh
+X1f93			Label	01F93h
+X1f9d			Label	01F9Dh
+X1fa1			Label	01FA1h
+X1fb3			Label	01FB3h
+X1fbd			Label	01FBDh
+X1fd4			Label	01FD4h
 
 Statistics
 ----------
 "Name"	= 0
-"EQU"	= 175
+"EQU"	= 176
 "SET"	= 0
-Labels	= 544
+Labels	= 537
 
 
diff --git a/modules/pc8080/lib/chipset.js b/modules/pc8080/lib/chipset.js
index 87a93ad0c..c70b044d7 100644
--- a/modules/pc8080/lib/chipset.js
+++ b/modules/pc8080/lib/chipset.js
@@ -169,13 +169,29 @@ ChipSet.SI1978 = {
 
 /*
  * One of the many chips in the VT100 is an 8224, which operates at 24.8832MHz.  That frequency is divided by 9
- * to yield a 361.69ns clock period for the 8080 CPU, which means the CPU is running at 2.76Mhz (cycles per second).
- * Hence the CPU component in the VT100's machine.xml is defined as:
+ * to yield a 361.69ns clock period for the 8080 CPU, which means (in theory) that the CPU is running at 2.76Mhz.
+ *
+ * Hence the CPU component in the VT100's machine.xml SHOULD be defined as:
  *
  *      <cpu id="cpu8080" model="8080" cycles="2764800"/>
  *
- * where 2764800 = 24883200 / 9.  You need to know this because we rely on the CPU frequency for simulating some
- * of the other VT100 circuits.
+ * where 2764800 = 24883200 / 9.  Unfortunately, the VT100 ROM decrements a countdown value in memory to determine
+ * cursor blink rate, and if we use 2764800 cycles per second, the cursor blinks MUCH too fast.  It's surprising that
+ * the VT100 doesn't rely on vertical retrace interrupts for blink rate.  Perhaps the designers were concerned about
+ * consistency across 60Hz and 50Hz display modes, although that seems like a minor concern, considering that the
+ * alternative means the ROM is now tied to a specific CPU operating frequency.  However, short of rewriting portions
+ * of the ROM, we have to deal with it.
+ *
+ * And we deal with it by lowering cycles per second to 1000000 (1Mhz).  I'm guessing that in a real VT100, the 8080
+ * gets bogged down by other factors (eg, the Video Processor's DMA requests), but we don't simulate the hardware to
+ * that level of detail, so the easiest solution is to lower the effective clock speed.
+ *
+ * NOTE: If you've noticed that the VT100 cursor blinks unevenly, you're right, and it's by design: the ROM uses a
+ * countdown value for the cursor's "on" state that is twice as large as that for the cursor's "off" state, so it's
+ * "on" twice as long as it's "off".
+ *
+ * WARNING: The choice of clock speed has an effect on other simulated VT100 circuits; see the DC011 Timing Chip
+ * discussion below, along with the getVT100LBA() function.
  *
  * For reference, here is a list of all the VT100 I/O ports, from /devices/pc8080/machine/vt100/debugger/README.md,
  * which in turn comes from p. 4-17 of the VT100 Technical Manual (July 1982):
@@ -729,7 +745,7 @@ ChipSet.prototype.outSIWatchdog = function(port, b, addrFrom)
 };
 
 /**
- * getVT100LBA(nBit)
+ * getVT100LBA(iBit)
  *
  * Returns the state of the requested (simulated) LBA bit.
  *
@@ -738,12 +754,12 @@ ChipSet.prototype.outSIWatchdog = function(port, b, addrFrom)
  * period than if we divided the cycle count by 88, but a shorter LBA7 period is probably helpful in terms of
  * overall performance.
  *
- * @param {number} nBit
+ * @param {number} iBit
  * @return {number}
  */
-ChipSet.prototype.getVT100LBA = function(nBit)
+ChipSet.prototype.getVT100LBA = function(iBit)
 {
-    return (this.cpu.getCycles() & (1 << (nBit - 1))) << 1;
+    return (this.cpu.getCycles() & (1 << (iBit - 1))) << 1;
 };
 
 /**
diff --git a/modules/pc8080/lib/keyboard.js b/modules/pc8080/lib/keyboard.js
index 1c2cde37f..e1c0b513d 100644
--- a/modules/pc8080/lib/keyboard.js
+++ b/modules/pc8080/lib/keyboard.js
@@ -109,7 +109,7 @@ Keyboard.ASCII = {
 Keyboard.KEYCODE = {
     /* 0x08 */ BS:          8,
     /* 0x09 */ TAB:         9,
-    /* 0x0A */ LF:          10,
+    /* 0x0A */ LF:          10,         // TODO: Determine if any key actually generates this (I suspect there is none)
     /* 0x0D */ CR:          13,
     /* 0x10 */ SHIFT:       16,
     /* 0x11 */ CTRL:        17,
@@ -249,7 +249,7 @@ Keyboard.STUPID_KEYCODES[Keyboard.KEYCODE.FF_DASH] = Keyboard.ASCII['-'];
 Keyboard.MINPRESSTIME = 100;            // 100ms
 
 /**
- * Alternate keyCode mappings (to support the popular WASD directional mappings)
+ * Alternate keyCode mappings (to support popular "WASD"-style directional-key mappings)
  *
  * TODO: ES6 computed property name support may now be in all mainstream browsers, allowing us to use
  * a simple object literal for this and all other object initializations.
@@ -289,7 +289,8 @@ Keyboard.VT100 = {
      * in the aKeysActive array, along with a final interrupt for KEYLAST.
      */
     ADDRESS: {
-        PORT:       0x82
+        PORT:       0x82,
+        INIT:       0x7F
     },
     /*
      * Writing port 0x82 updates the VT100's keyboard status byte via the keyboard's UART data input.
@@ -376,7 +377,7 @@ Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_7]   =   0x40;
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.F4]      =   0x41;   // aka PF4
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.F2]      =   0x42;   // aka PF2
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_0]   =   0x43;
-Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.LF]      =   0x44;
+Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.F7]      =   0x44;   // aka LINE FEED
 Keyboard.VT100.KEYMAP[Keyboard.ASCII['\\']]     =   0x45;
 Keyboard.VT100.KEYMAP[Keyboard.ASCII['|']]      =   0xC5;
 Keyboard.VT100.KEYMAP[Keyboard.ASCII.L]         =   0x46;
@@ -397,7 +398,7 @@ Keyboard.VT100.KEYMAP[Keyboard.ASCII.H]         =   0x58;
 Keyboard.VT100.KEYMAP[Keyboard.ASCII.D]         =   0x59;
 Keyboard.VT100.KEYMAP[Keyboard.ASCII.S]         =   0x5A;
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_DEL] =   0x60;   // keypad period
-Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.F7]      =   0x61;   // aka KEYPAD COMMA
+Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.F5]      =   0x61;   // aka KEYPAD COMMA
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_5]   =   0x62;
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_4]   =   0x63;
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.CR]      =   0x64;   // TODO: Figure out why the Technical Manual lists CR at both 0x04 and 0x64
@@ -412,7 +413,7 @@ Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.F8]      =   0x6A;   // aka NO SCROLL
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_9]   =   0x70;
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_3]   =   0x71;
 Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_6]   =   0x72;
-Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_SUB] =   0x73;
+Keyboard.VT100.KEYMAP[Keyboard.KEYCODE.NUM_SUB] =   0x73;   // aka KEYPAD MINUS
 Keyboard.VT100.KEYMAP[Keyboard.ASCII['/']]      =   0x75;
 Keyboard.VT100.KEYMAP[Keyboard.ASCII['?']]      =   0xF5;
 Keyboard.VT100.KEYMAP[Keyboard.ASCII.M]         =   0x76;
@@ -582,7 +583,8 @@ Keyboard.prototype.powerDown = function(fSave, fShutdown)
 
 Keyboard.VT100.INIT = [
     [
-        Keyboard.VT100.STATUS.INIT,
+        Keyboard.VT100.STATUS.INIT,     // bVT100Status
+        Keyboard.VT100.ADDRESS.INIT,    // bVT100Address
         -1                              // iKeyNext
     ]
 ];
@@ -596,7 +598,7 @@ Keyboard.prototype.reset = function()
 {
     /*
      * As keyDown events are encountered, a corresponding "softCode" is looked up.  If one is found,
-     * then an entry for the key is added to the aKeysActive array.  Each "key" entry contains:
+     * then an entry for the key is added to the aKeysActive array.  Each "key" entry in aKeysActive contains:
      *
      *      softCode:           number or string representing the key pressed
      *      msDown:             timestamp of the most recent "down" event
@@ -626,7 +628,7 @@ Keyboard.prototype.save = function()
     case Keyboard.SI1978.MODEL:
         break;
     case Keyboard.VT100.MODEL:
-        state.set(0, [this.bVT100Status]);
+        state.set(0, [this.bVT100Status, this.bVT100Address, -1]);
         break;
     }
     return state.data();
@@ -652,7 +654,8 @@ Keyboard.prototype.restore = function(data)
         case Keyboard.VT100.MODEL:
             this.bVT100Status = a[0];
             this.updateLEDs(this.bVT100Status & Keyboard.VT100.STATUS.LEDS);
-            this.iKeyNext = a[1];
+            this.bVT100Address = a[1];
+            this.iKeyNext = a[2];
             return true;
         }
     }
@@ -739,7 +742,7 @@ Keyboard.prototype.onKeyDown = function(event, fDown)
     }
 
     if (!COMPILED && this.messageEnabled(Messages.KEYS)) {
-        this.printMessage("onKey" + (fDown? "Down" : "Up") + "(" + keyCode + "): " + (fPass? "true" : "false"), true);
+        this.printMessage("onKey" + (fDown? "Down" : "Up") + "(" + keyCode + "): softCode=" + softCode + ", pass=" + (fPass? "true" : "false"), true);
     }
 
     return fPass;
@@ -888,6 +891,11 @@ Keyboard.prototype.checkBusy = function()
 /**
  * inVT100UARTAddress(port, addrFrom)
  *
+ * We take our cue from iKeyNext.  If it's -1 (default), we simply return the last value latched
+ * in bVT100Address.  Otherwise, if iKeyNext is a valid index into aKeysActive, we look up the key
+ * in the VT100.KEYMAP, latch it, and increment iKeyNext, else we latch Keyboard.VT100.KEYLAST
+ * and set iKeyNext to -1 again.
+ *
  * @this {Keyboard}
  * @param {number} port (0x82)
  * @param {number} [addrFrom] (not defined if the Debugger is trying to write the specified port)
@@ -895,19 +903,24 @@ Keyboard.prototype.checkBusy = function()
  */
 Keyboard.prototype.inVT100UARTAddress = function(port, addrFrom)
 {
-    var b = 0;
-    if (this.iKeyNext >= 0 && this.iKeyNext < this.aKeysActive.length) {
-        var key = this.aKeysActive[this.iKeyNext++];
-        b = Keyboard.VT100.KEYMAP[key.softCode];
-        if (b & 0x80) {
-            /*
-             * TODO: This code is supposed to be accompanied by a SHIFT key; make sure that it is.
-             */
-            b &= 0x7F;
+    var b = this.bVT100Address;
+    if (this.iKeyNext >= 0) {
+        if (this.iKeyNext < this.aKeysActive.length) {
+            var key = this.aKeysActive[this.iKeyNext++];
+            b = Keyboard.VT100.KEYMAP[key.softCode];
+            if (b & 0x80) {
+                /*
+                 * TODO: This code is supposed to be accompanied by a SHIFT key; make sure that it is.
+                 */
+                b &= 0x7F;
+            }
+        } else {
+            this.iKeyNext = -1;
+            b = Keyboard.VT100.KEYLAST;
         }
-        this.println("keymap: " + str.toHexByte(b));
+        this.bVT100Address = b;
+        this.cpu.requestINTR(1);
     }
-    if (!b) b = Keyboard.VT100.KEYLAST;
     this.printMessageIO(port, null, addrFrom, "KBDUART.ADDRESS", b);
     return b;
 };
diff --git a/modules/pc8080/lib/video.js b/modules/pc8080/lib/video.js
index d05c24c40..db554b905 100644
--- a/modules/pc8080/lib/video.js
+++ b/modules/pc8080/lib/video.js
@@ -320,7 +320,10 @@ Video.prototype.initBuffers = function()
      * for each font and draw characters by drawing from the font canvas to the target canvas.
      */
     if (this.cxCell > 1) {
-        this.initCellCache(this.nColsBuffer * this.nRowsBuffer);
+        /*
+         * We add an extra column per row to store the visible line length at the start of every row.
+         */
+        this.initCellCache((this.nColsBuffer + 1) * this.nRowsBuffer);
     } else {
         this.imageBuffer = this.contextScreen.createImageData(cxBuffer, cyBuffer);
         this.nPixelsPerCell = (16 / this.nBitsPerPixel)|0;
@@ -959,11 +962,12 @@ Video.prototype.updateChar = function(idFont, col, row, data, context)
 };
 
 /**
- * updateVT100()
+ * updateVT100(fForced)
  *
  * @this {Video}
+ * @param {boolean} [fForced]
  */
-Video.prototype.updateVT100 = function()
+Video.prototype.updateVT100 = function(fForced)
 {
     var addrNext = this.addrBuffer, fontNext = -1;
 
@@ -979,6 +983,8 @@ Video.prototype.updateVT100 = function()
         var nCols = 0;
         var addr = addrNext;
         var font = fontNext;
+        var nColsVisible = this.nColsBuffer;
+        if (font != Video.VT100.FONT.NORML) nColsVisible >>= 1;
         while (true) {
             var data = this.bus.getByteDirect(addr++);
             if ((data & Video.VT100.LINETERM) == Video.VT100.LINETERM) {
@@ -988,7 +994,7 @@ Video.prototype.updateVT100 = function()
                 addrNext += (b & Video.VT100.LINEATTR.ADDRBIAS)? Video.VT100.ADDRBIAS_LO : Video.VT100.ADDRBIAS_HI;
                 break;
             }
-            if (nCols < this.abLineBuffer.length) {
+            if (nCols < nColsVisible) {
                 this.abLineBuffer[nCols++] = data;
             } else {
                 break;                          // ideally, we would wait for a LINETERM byte, but it's not safe to loop without limit
@@ -1011,13 +1017,21 @@ Video.prototype.updateVT100 = function()
         }
 
         /*
-         * Display the line buffer; ordinarily, the font number would always be valid after processing the "fill lines",
-         * but if the buffer isn't initialized yet, the usual LINETERM might be missing, so the font number might not be set.
+         * Display the line buffer; ordinarily, the font number would be valid after processing the "fill lines",
+         * but if the buffer isn't initialized yet, those lines might be missing, so the font number might not be set.
          */
         if (font >= 0) {
+            /*
+             * Cell cache logic is complicated by the fact that a line may be single-width one frame and double-width
+             * the next.  So we store the visible line length at the start of each row in the cache, which must match if
+             * the cache is considered valid for the current line.
+             */
+            var fLineCacheValid = this.fCellCacheValid && (this.aCellCache[iCell] == nColsVisible);
+            this.aCellCache[iCell++] = nColsVisible;
             for (var iCol = 0; iCol < nCols; iCol++) {
                 data = this.abLineBuffer[iCol];
-                if (!this.fCellCacheValid || data !== this.aCellCache[iCell]) {
+                if (!fLineCacheValid || data !== this.aCellCache[iCell]) {
+                    this.aCellCache[iCell] = data;
                     this.updateChar(font, iCol, nRows, data, this.contextBuffer);
                     cUpdated++;
                 }
@@ -1027,6 +1041,18 @@ Video.prototype.updateVT100 = function()
         nRows++;
     }
 
+    this.assert(font < 0 || iCell === this.nCellCache);
+
+    if (MAXDEBUG && !fForced) {
+        var nSeconds = Date.now() / 1000;
+        if ((nSeconds|0) != (this.nUpdateSeconds|0)) {
+            this.nUpdateNumber = 0;
+        }
+        this.nUpdateNumber++;
+        this.nUpdateSeconds = nSeconds;
+        this.printMessage("updateVT100(): update #" + this.nUpdateNumber + " at " +this.nUpdateSeconds + " corner=" + str.toHexByte(this.aCellCache[1]) + " cycles=" + this.nCyclesPrev + " delta=" + this.nCyclesDelta);
+    }
+
     this.fCellCacheValid = true;
 
     if (cUpdated && this.contextBuffer) {
@@ -1056,9 +1082,10 @@ Video.prototype.updateScreen = function(n)
 {
     var fClean;
     var fUpdate = true;
+    var fForced = true;
 
     if (n >= 0) {
-
+        fForced = false;
         if (this.rateInterrupt) {
             /*
              * TODO: Incorporate these hard-coded interrupt vector numbers into configuration blocks.
@@ -1093,11 +1120,11 @@ Video.prototype.updateScreen = function(n)
         }
     }
 
-    if (DEBUG) {
+    if (DEBUG && !fForced) {
         var nCycles = this.cpu.getCycles();
-        var nCyclesDelta = nCycles - this.nCyclesPrev;
+        this.nCyclesDelta = nCycles - this.nCyclesPrev;
         this.nCyclesPrev = nCycles;
-        this.printMessage("updateScreen(" + n + "): clean=" + fClean + ", update=" + fUpdate + ", cycles=" + nCycles + ", delta=" + nCyclesDelta);
+        if (MAXDEBUG) this.printMessage("updateScreen(" + n + "): clean=" + fClean + ", update=" + fUpdate + ", cycles=" + this.nCyclesPrev + ", delta=" + this.nCyclesDelta);
     }
 
     if (!fUpdate) {
@@ -1105,32 +1132,34 @@ Video.prototype.updateScreen = function(n)
     }
 
     if (this.cxCell > 1) {
-        this.updateScreenText();
+        this.updateScreenText(fForced);
     } else {
-        this.updateScreenGraphics();
+        this.updateScreenGraphics(fForced);
     }
 };
 
 /**
- * updateScreenText()
+ * updateScreenText(fForced)
  *
  * @this {Video}
+ * @param {boolean} [fForced]
  */
-Video.prototype.updateScreenText = function()
+Video.prototype.updateScreenText = function(fForced)
 {
     switch(this.nFormat) {
     case Video.FORMAT.VT100:
-        this.updateVT100();
+        this.updateVT100(fForced);
         break;
     }
 };
 
 /**
- * updateScreenGraphics()
+ * updateScreenGraphics(fForced)
  *
  * @this {Video}
+ * @param {boolean} [fForced]
  */
-Video.prototype.updateScreenGraphics = function()
+Video.prototype.updateScreenGraphics = function(fForced)
 {
     var addr = this.addrBuffer;
     var addrLimit = addr + this.sizeBuffer;
diff --git a/versions/pc8080/1.23.3/pc8080-dbg.js b/versions/pc8080/1.23.3/pc8080-dbg.js
index d2c058cba..13a81c3f9 100644
--- a/versions/pc8080/1.23.3/pc8080-dbg.js
+++ b/versions/pc8080/1.23.3/pc8080-dbg.js
@@ -1,242 +1,243 @@
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+function Cf(a,b){if("?"==b)a.g("frequency commands:"),a.g("\tclear\tclear all frequency counts");else{var c,d=0;if(a.K)if("clear"==b){for(c=0;c<a.K.length;c++)a.K[c]=[c,0];a.g("frequency data cleared");d++}else if(void 0!==b)a.g("unknown frequency command: "+b),d++;else{var e=a.K.slice();e.sort(function(a,b){return b[1]-a[1]});var f=8086!=a.style?re:se;for(c=0;c<e.length;c++){var h=e[c][0],g=e[c][1];g&&(a.g((f[a.Sa[h][0]]+"  ").substr(0,5)+" ("+("0x"+n(h,2))+"): "+g+" times"),d++)}}d||a.g("no frequency data available")}}
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