From 65ecb282ad70db5215e8274c137f5a395789cd30 Mon Sep 17 00:00:00 2001
From: Jeff Parsons <Jeff@pcjs.org>
Date: Fri, 5 Aug 2016 21:44:27 -0700
Subject: [PATCH 1/3] More VT100 NVR support

---
 devices/pc8080/machine/vt100/machine.xml |   2 +-
 modules/pc8080/lib/chipset.js            | 136 ++++++--
 versions/pc8080/1.23.3/pc8080-dbg.js     | 398 ++++++++++++-----------
 versions/pc8080/1.23.3/pc8080.js         | 224 ++++++-------
 4 files changed, 430 insertions(+), 330 deletions(-)

diff --git a/devices/pc8080/machine/vt100/machine.xml b/devices/pc8080/machine/vt100/machine.xml
index 4054ddfae..5f347c243 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="2764798"/>
+	<cpu id="cpu8080" model="8080" cycles="2764800"/>
 	<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"
diff --git a/modules/pc8080/lib/chipset.js b/modules/pc8080/lib/chipset.js
index 1f3287cd1..804875450 100644
--- a/modules/pc8080/lib/chipset.js
+++ b/modules/pc8080/lib/chipset.js
@@ -171,10 +171,10 @@ ChipSet.SI1978 = {
  * 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:
  *
- *      <cpu id="cpu8080" model="8080" cycles="2764798"/>
+ *      <cpu id="cpu8080" model="8080" cycles="2764800"/>
  *
- * Beyond that, we don't really care about that particular 8224.  I only mention it because knowing the CPU frequency
- * is helpful for simulating some of the other circuits below that we DO care about.
+ * where 2764800 = 24883200 / 9. Beyond that, we don't really care about that particular 8224.  I only mention it
+ * because knowing the CPU frequency is helpful for simulating some of the other circuits below that we DO care about.
  */
 ChipSet.VT100 = {
     MODEL:          100.0,
@@ -189,13 +189,23 @@ ChipSet.VT100 = {
         NVR_CLK:    0x40,               // NVR CLOCK if SET
         KBD_XMIT:   0x80                // KBD XMIT BUFFER empty if SET
     },
-    BRIGHTNESS_LATCH: {
+    BRIGHTNESS: {
         PORT:       0x42,               // write-only
         INIT:       0x00                // for lack of a better guess
     },
-    NVR_LATCH: {
-        PORT:       0x62,               // write-only
-        INIT:       0x00                // for lack of a better guess
+    NVR: {
+        LATCH: {
+            PORT:   0x62                // write-only
+        },
+        CMD: {
+            ACCEPT_DATA:    0x0,
+            ACCEPT_ADDR:    0x1,
+            SHIFT_OUT:      0x2,
+            WRITE:          0x4,
+            ERASE:          0x5,
+            READ:           0x6,
+            STANDBY:        0x7
+        }
     },
     DC012: {                            // generates scan counts for the Video Processor
         PORT:       0xA2,               // write-only
@@ -220,8 +230,8 @@ ChipSet.VT100 = {
      *
      * And on p. 4-62, timings are provided for the LBA0 through LBA7 when the VT100 is in 80-column mode; in particular:
      *
-     *      LBA6:   16.82353us (when LBA6 is low, for a period is 33.64706us)
-     *      LBA7:   31.77778us (when LBA7 is high, for a period is 63.55556us)
+     *      LBA6:   16.82353us (when LBA6 is low, for a period of 33.64706us)
+     *      LBA7:   31.77778us (when LBA7 is high, for a period of 63.55556us)
      *
      * If we assume that the CPU cycle count increments once every 361.69ns, it will increment roughly 88 times every
      * time LBA7 toggles.  So we can divide the CPU cycle count by 88 and set LBA to the low bit of that truncated
@@ -345,11 +355,13 @@ ChipSet.SI1978.init = [
 
 ChipSet.VT100.init = [
     [
-        ChipSet.VT100.BRIGHTNESS_LATCH.INIT,
-        ChipSet.VT100.NVR_LATCH.INIT,
+        ChipSet.VT100.BRIGHTNESS.INIT,
         ChipSet.VT100.FLAGS_BUFFER.NO_AVO | ChipSet.VT100.FLAGS_BUFFER.NO_GFX,
         ChipSet.VT100.DC012.INIT,
         ChipSet.VT100.DC011.INIT
+    ],
+    [
+        0, 0, 0, 0, new Array(100)
     ]
 ];
 
@@ -381,7 +393,8 @@ ChipSet.prototype.save = function()
         state.set(0, [this.bStatus0, this.bStatus1, this.bStatus2, this.wShiftData, this.bShiftCount, this.bSound1, this.bSound2]);
         break;
     case ChipSet.VT100.MODEL:
-        state.set(0, [this.bBrightnessLatch, this.bNVRLatch, this.bFlagsBuffer, this.bDC012, this.bDC011]);
+        state.set(0, [this.bBrightness, this.bFlagsBuffer, this.bDC012, this.bDC011]);
+        state.set(1, [this.dNVRAddr, this.wNVRData, this.bNVRLatch, this.bNVROut, this.aNVRWords]);
         break;
     }
     return state.data();
@@ -411,11 +424,16 @@ ChipSet.prototype.restore = function(data)
             this.bSound2 = a[6];
             return true;
         case ChipSet.VT100.MODEL:
-            this.bBrightnessLatch = a[0];
-            this.bNVRLatch = a[1];
+            this.bBrightness = a[0];
             this.bFlagsBuffer = a[2];
             this.bDC012 = a[3];
             this.bDC011 = a[4];
+            a = data[1];
+            this.dNVRAddr = a[0];               // 20-bit address
+            this.wNVRData = a[1];               // 14-bit word
+            this.bNVRLatch = a[2];              // 1 byte
+            this.bNVROut = a[3];                // 1 bit
+            this.aNVRWords = a[4];              // 100 14-bit words
             return true;
         }
     }
@@ -636,6 +654,72 @@ ChipSet.prototype.getVT100LBA = function(nBit)
     return (this.cpu.getCycles() & (1 << (nBit - 1))) << 1;
 };
 
+/**
+ * getNVRAddr()
+ *
+ * @return {number}
+ */
+ChipSet.prototype.getNVRAddr = function()
+{
+    var i;
+    var tens = 0, ones = 0;
+    var addr = ~this.dNVRAddr;
+    for (i = 0; i < 10; i++) {
+        if (addr & 0x1) tens = 9-i;
+        addr >>= 1;
+    }
+    for (i = 0; i < 10; i++) {
+        if (addr & 0x1) ones = 9-i;
+        addr >>= 1;
+    }
+    addr = tens*10 + ones;
+    this.assert(addr >= 0 && addr < this.aNVRWords.length);
+    return addr;
+};
+
+/**
+ * advanceNVR()
+ */
+ChipSet.prototype.advanceNVR = function()
+{
+    var addr;
+    var bit = this.bNVRLatch & 0x1;
+    var bCmd = (this.bNVRLatch >> 1) & 0x7;
+
+    switch(bCmd) {
+    case ChipSet.VT100.NVR.CMD.STANDBY:
+        break;
+
+    case ChipSet.VT100.NVR.CMD.ACCEPT_ADDR:
+        this.dNVRAddr = (this.dNVRAddr << 1) | bit;
+        break;
+
+    case ChipSet.VT100.NVR.CMD.ERASE:
+        addr = this.getNVRAddr();
+        this.aNVRWords[addr] = 0x3fff;
+        break;
+
+    case ChipSet.VT100.NVR.CMD.ACCEPT_DATA:
+        this.wNVRData = (this.wNVRData << 1) | bit;
+        break;
+
+    case ChipSet.VT100.NVR.CMD.WRITE:
+        addr = this.getNVRAddr();
+        this.aNVRWords[addr] = this.wNVRData & 0x3fff;
+        break;
+
+    case ChipSet.VT100.NVR.CMD.READ:
+        addr = this.getNVRAddr();
+        this.wNVRData = this.aNVRWords[addr];
+        break;
+
+    case ChipSet.VT100.NVR.CMD.SHIFT_OUT:
+        this.bNVROut = this.wNVRData & 0x2000;
+        this.wNVRData <<= 1;
+        break;
+    }
+};
+
 /**
  * inVT100FlagsBuffer(port, addrFrom)
  *
@@ -649,23 +733,35 @@ ChipSet.prototype.inVT100FlagsBuffer = function(port, addrFrom)
     /*
      * The NVR_CLK bit is driven by LBA7 (ie, bit 7 from Line Buffer Address generation); see the DC011 discussion above.
      */
-    var b = this.bFlagsBuffer = (this.bFlagsBuffer & ~ChipSet.VT100.FLAGS_BUFFER.NVR_CLK) | (this.getVT100LBA(7)? ChipSet.VT100.FLAGS_BUFFER.NVR_CLK : 0);
+    var b = this.bFlagsBuffer;
+    b &= ~ChipSet.VT100.FLAGS_BUFFER.NVR_CLK;
+    if (this.getVT100LBA(7)) {
+        b |= ChipSet.VT100.FLAGS_BUFFER.NVR_CLK;
+        if (b != this.bFlagsBuffer) {
+            this.advanceNVR();
+        }
+    }
+    b &= ~ChipSet.VT100.FLAGS_BUFFER.NVR_DATA;
+    if (this.bNVROut) {
+        b |= ChipSet.VT100.FLAGS_BUFFER.NVR_DATA;
+    }
+    this.bFlagsBuffer = b;
     this.printMessageIO(port, null, addrFrom, "FLAGS.BUFFER", b, true);
     return b;
 };
 
 /**
- * outVT100BrightnessLatch(port, b, addrFrom)
+ * outVT100Brightness(port, b, addrFrom)
  *
  * @this {ChipSet}
  * @param {number} port (0x42)
  * @param {number} b
  * @param {number} [addrFrom] (not defined if the Debugger is trying to write the specified port)
  */
-ChipSet.prototype.outVT100BrightnessLatch = function(port, b, addrFrom)
+ChipSet.prototype.outVT100Brightness = function(port, b, addrFrom)
 {
-    this.printMessageIO(port, b, addrFrom, "BRIGHTNESS.LATCH", null, true);
-    this.bBrightnessLatch = b;
+    this.printMessageIO(port, b, addrFrom, "BRIGHTNESS", null, true);
+    this.bBrightness = b;
 };
 
 /**
@@ -733,7 +829,7 @@ ChipSet.VT100.portsInput = {
 };
 
 ChipSet.VT100.portsOutput = {
-    0x42: ChipSet.prototype.outVT100BrightnessLatch,
+    0x42: ChipSet.prototype.outVT100Brightness,
     0x62: ChipSet.prototype.outVT100NVRLatch,
     0xA2: ChipSet.prototype.outVT100DC012,
     0xC2: ChipSet.prototype.outVT100DC011
diff --git a/versions/pc8080/1.23.3/pc8080-dbg.js b/versions/pc8080/1.23.3/pc8080-dbg.js
index 6b44d1f8e..f4319251c 100644
--- a/versions/pc8080/1.23.3/pc8080-dbg.js
+++ b/versions/pc8080/1.23.3/pc8080-dbg.js
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+m.restore=function(a){var b;if(a&&(b=a[0])&&b.length)switch(this.Ha){case U.Ea:return this.ma=b[0],this.D=b[1],this.ta=b[2],this.N=b[3],this.Y=b[4],this.ga=b[5],this.ka=b[6],!0;case V.Ea:return this.ca=b[0],this.I=b[2],this.ea=b[3],this.da=b[4],b=a[1],this.K=b[0],this.C=b[1],this.J=b[2],this.U=b[3],this.H=b[4],!0}return!1};m.start=function(){};m.stop=function(){};function Ad(a,b,c){a.D&=~b;c&&(a.D|=b)}m.Xc=function(a,b){var c=this.ma;D(this,a,null,b,"STATUS0",c);return c};
+m.Yc=function(a,b){var c=this.D;D(this,a,null,b,"STATUS1",c);return c};m.Zc=function(a,b){var c=this.ta;D(this,a,null,b,"STATUS2",c);return c};m.Wc=function(a,b){var c=this.N>>8-this.Y&255;D(this,a,null,b,"SHIFT.RESULT",c);return c};m.cd=function(a,b,c){D(this,a,b,c,"SHIFT.COUNT",null);this.Y=b};m.ed=function(a,b,c){D(this,a,b,c,"SOUND1",null);this.ga=b};m.dd=function(a,b,c){D(this,a,b,c,"SHIFT.DATA",null);this.N=b<<8|this.N>>8};m.fd=function(a,b,c){D(this,a,b,c,"SOUND2",null);this.ka=b};
+m.gd=function(a,b,c){D(this,a,b,c,"WATCHDOG",null)};function Bd(a){var b=0,c=0,d=~a.K;for(a=0;10>a;a++)d&1&&(b=9-a),d>>=1;for(a=0;10>a;a++)d&1&&(c=9-a),d>>=1;return 10*b+c}
+m.$c=function(a,b){var c=this.I,c=c&~V.ab.Yb;if((yc(this.b)&64)<<1&&(c|=V.ab.Yb,c!=this.I)){var d;d=this.J&1;switch(this.J>>1&7){case V.bb.$a.vc:this.K=this.K<<1|d;break;case V.bb.$a.Bc:d=Bd(this);this.H[d]=16383;break;case V.bb.$a.wc:this.C=this.C<<1|d;break;case V.bb.$a.Sc:d=Bd(this);this.H[d]=this.C&16383;break;case V.bb.$a.Oc:d=Bd(this);this.C=this.H[d];break;case V.bb.$a.Pc:this.U=this.C&8192,this.C<<=1}}c&=~V.ab.Zb;this.U&&(c|=V.ab.Zb);this.I=c;D(this,a,null,b,"FLAGS.BUFFER",c);return c};
+m.hd=function(a,b,c){D(this,a,b,c,"BRIGHTNESS",null);this.ca=b};m.ld=function(a,b,c){D(this,a,b,c,"NVR.LATCH",null);this.J=b};m.kd=function(a,b,c){D(this,a,b,c,"DC012",null);this.ea=b};m.jd=function(a,b,c){D(this,a,b,c,"DC011",null);this.da=b};U.Mb={0:T.prototype.Xc,1:T.prototype.Yc,2:T.prototype.Zc,3:T.prototype.Wc};U.Nb={2:T.prototype.cd,3:T.prototype.ed,4:T.prototype.dd,5:T.prototype.fd,6:T.prototype.gd};V.Mb={66:T.prototype.$c};V.Nb={66:T.prototype.hd,98:T.prototype.ld,162:T.prototype.kd,194:T.prototype.jd};
+Ja(function(){for(var a=C(document,"pc8080","chipset"),b=0;b<a.length;b++){var c=a[b],d=B(c),d=new T(d);db(d,c)}});function Cd(a){y.call(this,"ROM",a,Cd);this.u=null;this.H=a.addr;this.C=a.size;this.I=a.writable;this.A=a.alias;this.D=a.file;this.J=ba(this.D);if(this.D){a=this.D;var b=da(this.J);"json"!=b&&"hex"!=b&&(a=qa()+"/api/v1/dump?file="+this.D+"&format=bytes&decimal=true");var c=this;oa(a,null,!0,function(a,b,f){Dd(c,a,b,f)})}}Za(Cd);var Ed=[0,5];
+Cd.prototype.Ma=function(a,b,c,d){this.w=b;this.b=c;this.G=d;Fd(this)};Cd.prototype.Ca=function(){if(this.La){if(this.G){var a=this.G,b=this.id,c=this.H,d=this.C,e=this.La,f=[],h;for(h in e){var g=e[h];"number"==typeof g&&(e[h]=g={o:g});var k=g.o,l=g.a;if(void 0!==k){var n=f,k=[k>>>0,h],p=ka(n,k,a.Ra);0>p&&n.splice(-(p+1),0,k)}l&&(g.a=l.replace(/''/g,'"'))}a.I.push({de:b,F:c,ad:d,La:e,ac:f})}delete this.La}return!0};Cd.prototype.Ia=function(){return!0};
+function Dd(a,b,c,d){if(d)a.fa("Unable to load system ROM (error "+d+": "+b+")");else{ab(a.Sb,b,c);if("["==c.charAt(0)||"{"==c.charAt(0))try{var e=eval("("+c+")"),f=e.bytes,h=e.data;if(f)a.u=f;else if(h)for(a.u=Array(4*h.length),d=c=0;c<h.length;c++)a.u[d++]=h[c]&255,a.u[d++]=h[c]>>8&255,a.u[d++]=h[c]>>16&255,a.u[d++]=h[c]>>24&255;else a.u=e;a.La=e.symbols;if(!a.u.length){v("Empty ROM: "+b);return}if(1==a.u.length){v(a.u[0]);return}}catch(g){a.fa("ROM data error: "+g.message);return}else for(b=c.replace(/\n/gm,
+" ").replace(/ +$/,"").split(" "),a.u=Array(b.length),e=0;e<b.length;e++)a.u[e]=aa(b[e],16);Fd(a)}}
+function Fd(a){if(!lb(a))if(!a.D)E(a);else if(a.u&&a.w){a.C||(a.C=a.u.length);if(a.u.length!=a.C)mb(a,"ROM size (0x"+q(a.u.length)+") does not match specified size ("+("0x"+q(a.C))+")");else if(Gd(a,a.H)){var b=[];"number"==typeof a.A?b.push(a.A):null!=a.A&&a.A.length&&(b=a.A);for(var c=0;c<b.length;c++){for(var d=a,e=b[c],f=d.w,h=d.C,g=[],k=d.H>>>f.la;0<h&&k<f.V.length;)g.push(f.V[k++]),h-=f.Ba;f=d.w;d=d.C;h=0;for(e>>>=f.la;0<d&&e<f.V.length;){k=g[h++];if(!k)break;f.V[e++]=k;d-=f.Ba}}delete a.u}E(a)}}
+function Gd(a,b){if(ub(a.w,b,a.C,a.I?1:Vb)){var c;for(c=0;c<a.u.length;c++)zb(a.w,b+c,a.u[c]);if(a.I&&256==b){for(c=0;c<Ed.length;c++)zb(a.w,Ed[c],118);Gc(a.b,function(a){return function(b){if(0<=Ed.indexOf(b)){var c=!1,h=a.b,g=a.G;if(5==b)switch(c=!0,h.P){case 2:Hd(a,String.fromCharCode(h.S));break;case 9:for(var k=Mc(h),l="",n=255;n--;){var p=a.b.X(k++);if(36==p)break;l+=String.fromCharCode(p)}Hd(a,l);break;default:c=!1}c?xd.call(h):g&&(a.g("\nCP/M vector "+r(b)),H(h,b),g.ja());b=!0}else b=!1;return b}}(a));
+Ic(a.b,b)}return!0}return!1}function Hd(a,b){b=b.replace(/\r/g,"");a.Aa&&(a.Aa.value+=b,a.Aa.scrollTop=a.Aa.scrollHeight)}Ja(function(){for(var a=C(document,"pc8080","rom"),b=0;b<a.length;b++){var c=a[b],d=B(c),d=new Cd(d);db(d,c)}});function Id(a){y.call(this,"RAM",a,Id);this.A=a.addr;this.C=a.size;this.u=!1}Za(Id);m=Id.prototype;m.Ma=function(a,b,c,d){this.w=b;this.b=c;this.G=d;E(this)};m.Ca=function(a,b){b||this.reset();return!0};m.Ia=function(a){return a?this.save():!0};
+m.reset=function(){!this.u&&this.C&&ub(this.w,this.A,this.C,1)&&(this.u=!0);this.u||v("No RAM allocated")};m.save=function(){return null};m.restore=function(){return!0};Ja(function(){for(var a=C(document,"pc8080","ram"),b=0;b<a.length;b++){var c=a[b],d=B(c),d=new Id(d);db(d,c)}});function X(a){y.call(this,"Keyboard",a,X,65536);this.reset();E(this)}Za(X);
+var Jd={Oa:{wa:130,Fc:1,Ec:2,Dc:4,Cc:8,Gc:16,$b:32,Zd:64,ud:128}},Kd={"1p":49,"2p":50,coin:51,left:37,right:39,fire:32},Ld={65:37,68:39,76:32},Md={l4:Jd.Oa.Fc,l3:Jd.Oa.Ec,l2:Jd.Oa.Dc,l1:Jd.Oa.Cc,locked:Jd.Oa.Gc,online:Jd.Oa.$b,local:~Jd.Oa.$b};
+X.prototype.pa=function(a,b,c){var d=this,e=a+"-"+b;if(void 0===this.L[e]){if("led"==a&&Md[b])return this.L[e]=c,!0;switch(b){case "kbd":return c.onkeydown=function(a){return Nd(d,a,!0)},c.onkeyup=function(a){return Nd(d,a,!1)},!0;default:if(void 0!==Kd[b])return this.L[e]=c,a=function(a,b){return function(){Od(a,b,!0)}}(this,b),b=function(a,b){return function(){Od(a,b,!1)}}(this,b),"ontouchstart"in window?(c.ontouchstart=a,c.ontouchend=b):(c.onmousedown=a,c.onmouseup=c.onmouseout=b),!0}}return!1};
+X.prototype.Ma=function(a,b,c,d){this.G=d;this.C=qb(a,"ChipSet");this.Ha=this.C.Ha;switch(this.Ha){case V.Ea:this.A=Jd}this.A&&(Bb(b,this,this.A.Mb),Fb(b,this,this.A.Nb))};X.prototype.Ca=function(a,b){if(!b)if(!a)this.reset();else if(!this.restore(a))return!1;return!0};X.prototype.Ia=function(a){return a?this.save():!0};Jd.Ua=[[0]];X.prototype.reset=function(){this.u={};this.b={};this.A&&!this.restore(this.A.Ua)&&this.fa("reset error")};
+X.prototype.save=function(){var a=new I(this);switch(this.Ha){case V.Ea:J(a,0,[this.w])}return a.data()};X.prototype.restore=function(a){var b;if(a&&(b=a[0])&&b.length)switch(this.Ha){case U.Ea:return!0;case V.Ea:return this.w=b[0],Pd(this),!0}return!1};function Pd(a){for(var b in Md){var c=a.L["led-"+b];if(c){var d=Md[b],e=!!(a.w&d);d&d-1&&(e=!(a.w&~d));c.style.backgroundColor=e?"#ff0000":"#000000"}}}
+function Nd(a,b,c){var d=!0,e;a:{e=b.keyCode;e=Ld[e]||e;for(var f in Kd)if(Kd[f]===e){e=f;break a}e=null}e&&(d=Od(a,e,c),b.preventDefault());return d}
+function Od(a,b,c){if(c)a.u[b]=Date.now(),delete a.b[b];else{var d=a.u[b];if(d&&100>Date.now()-d)return a.b[b]=d,Qd(a),!0;delete a.u[b]}if(a.C)switch(b){case "1p":Ad(a.C,U.Pa.Jc,c);break;case "2p":Ad(a.C,U.Pa.Nc,c);break;case "coin":Ad(a.C,U.Pa.yc,c);break;case "left":Ad(a.C,U.Pa.Lc,c);break;case "right":Ad(a.C,U.Pa.Mc,c);break;case "fire":Ad(a.C,U.Pa.Kc,c)}return!0}
+function Qd(a){for(var b=-1,c=Object.keys(a.b),d=0;d<c.length;d++){var e=c[d],f=100-(Date.now()-a.b[e]);if(0<f){if(0>b||b>f)b=f}else delete a.b[e],Od(a,e,!1)}0<=b&&setTimeout(function(){Qd(a)},b)}X.prototype.D=function(a,b,c){D(this,a,b,c,"KBDUART.STATUS",null);this.w=b;Pd(this)};Jd.Mb={};Jd.Nb={130:X.prototype.D};Ja(function(){for(var a=C(document,"pc8080","keyboard"),b=0;b<a.length;b++){var c=a[b],d=B(c),d=new X(d);db(d,c)}});
+function Rd(a,b,c,d,e){var f=this;this.ic=xa("Gecko/");var h=["","moz","ms","webkit"];y.call(this,"Video",a,Rd,262144);this.aa=a.screenWidth;this.U=a.screenHeight;this.ya=a.bufferAddr;this.pd=a.bufferRAM;var g=a.bufferFormat;this.Y=g&&Sd[g.toLowerCase()]||Td;this.Ra=a.bufferCols;this.ea=a.bufferRows;this.md=this.oa=a.cellWidth||1;this.ha=a.cellHeight||1;this.eb=null;this.Qa=a.bufferBits||1;this.qd=a.bufferLeft||0;if(this.D=a.bufferRotate)this.D=this.D%360,0<this.D&&(this.D-=360),-90!=this.D&&(this.fa("unsupported buffer rotation: "+
+this.D),this.D=0);this.pc=a.interruptRate;this.rd=a.refreshRate||60;this.N=b;this.H=c;this.Fa=(this.sd=d)||b||null;this.nd=this.aa;this.od=this.U;this.Jb=this.aa/this.Ra|0;this.hc=this.U/this.ea|0;1<this.ha&&this.ea++;b=a.smoothing;(c=Ra.smoothing)&&(b="true"==c);if(null!=b)for(c=0;c<h.length;c++)if(d=(d=h[c])?d+"ImageSmoothingEnabled":"imageSmoothingEnabled",void 0!==this.H[d]){this.H[d]=b;break}if(this.I=a.screenRotate)this.I=this.I%360,0<this.I&&(this.I-=360),-90!=this.I?(this.fa("unsupported screen rotation: "+
+this.I),this.I=0):(this.H.translate(0,this.U),this.H.rotate(this.I*Math.PI/180),this.H.scale(this.U/this.aa,this.aa/this.U));if(this.A=e)if(this.A.gb=e.requestFullscreen||e.msRequestFullscreen||e.mozRequestFullScreen||e.webkitRequestFullscreen,this.A.gb){for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenchange","on"+d in document){document.addEventListener(d,function(){Ud(f,document.fullscreenElement||document.msFullscreenElement||document.mozFullScreenElement||document.webkitFullscreenElement?!0:!1)},
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+Rd.prototype.Ma=function(a,b,c,d){this.u=a;this.w=b;this.b=c;this.G=d;this.C=qb(a,"ChipSet");!this.Y&&this.C&&this.C.Ha==U.Ea&&(this.Y=1);this.J=this.Ra*this.oa;this.ca=this.ea*this.ha;b=this.J;c=this.ca;this.D&&(b=this.ca,c=this.J);this.Ta=(this.J*this.Qa>>3)*this.ca;if(this.pd||ub(this.w,this.ya,this.Ta,3))1<this.oa?Wd(this,this.Ra*this.ea):(this.jc=this.H.createImageData(b,c),this.oc=16/this.Qa|0,Wd(this,this.Ta>>1)),this.K=document.createElement("canvas"),this.K.width=b,this.K.height=c,this.fb=
+this.K.getContext("2d"),this.ma={},this.Ga=1<<this.Qa,this.ta=Array(this.Ga+2),this.ta[0]=[0,0,0,255],this.ta[1]=[255,255,255,255],1==this.Y&&(this.ta[this.Ga+0]=[255,255,0,255],this.ta[this.Ga+1]=[0,255,0,255]),2==this.Y&&(this.qc=60,this.vb=!1,this.xa=Array(this.Ra));if(this.da=qb(a,"Keyboard")){for(var e in this.wb)this.da.pa("led",e,this.wb[e]);this.N&&this.da.pa(this.sd?"textarea":"canvas","kbd",this.Fa)}this.ga||E(this)};
+function Vd(a,b,c,d){if(d)a.fa("Unable to load font ROM (error "+d+": "+b+")");else{ab(a.Sb,b,c);try{var e=eval("("+c+")"),f=e.bytes||e;if(!f||!f.length){v("Empty font ROM: "+b);return}if(1==f.length){v(f[0]);return}if(2048==f.length)Xd(a,f);else{a.fa("Unrecognized font data length ("+f.length+")");return}}catch(h){a.fa("Font ROM data error: "+h.message);return}(a.H||a.G)&&E(a)}}
+function Xd(a,b){a.eb=b;a.ma[96]=[Yd(a,a.oa,a.ha),Yd(a,a.oa,a.ha,a.vb)];a.ma[64]=[Yd(a,2*a.oa,a.ha),Yd(a,2*a.oa,a.ha,a.vb)];a.ma[32]=a.ma[0]=[Yd(a,2*a.oa,2*a.ha),Yd(a,2*a.oa,2*a.ha,a.vb)]}
+function Yd(a,b,c,d){var e=8>=a.md?8:16,f=8<e?15:0,h=a.eb.length/e,g=!1===d,k={oa:b,ha:c};k.canvas=document.createElement("canvas");k.canvas.width=16*b;k.canvas.height=h/16*c;k.context=k.canvas.getContext("2d");for(var l=k.context.createImageData(b,c),n=0;n<h;n++){for(var p=0,x=p;p<a.ha;p++)for(var w=n*e+(f+p&e-1),w=d&&8==p?255:a.eb[w],t=0;t<c/a.ha;t++){for(var z=0,u=z;z<a.oa;z++)for(var F=w&128>>(7<z?7:z),A=0;A<b/a.oa;A++)g&&(F=!F),Zd(a,l,u,x,F?1:0),u++;x++}k.context.putImageData(l,(n&15)*b,(n>>
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-255);if(g)break}if(h)for(c=0,e=1;e<h.length;e++){for(var g=h[e],k=0;k<g.length;k++)zb(this.w,b++,g.charCodeAt(k)|c);c^=128}zb(this.w,b++,127);c=b}Zd(this)}return!0};Qd.prototype.ma=function(a,b,c){var d=this;if("led"==a||"rled"==a)return this.tb[b]=c,!0;switch(b){case "fullScreen":return this.K[b]=c,this.A&&this.A.cb?c.onclick=function(){d.cb()}:c.parentNode.removeChild(c),!0}return!1};
-Qd.prototype.cb=function(){var a=!1;if(this.A){if(this.A.cb){a="100%";if(screen&&screen.width&&screen.height){var b=screen.width/screen.height,c=this.aa/this.W;b>c&&(a=Math.round(c/b*100)+"%")}this.fc?(this.T.style.width=a,this.T.style.width=a,this.T.style.display="block",this.T.style.margin="auto"):(this.A.style.width=a,this.A.style.height="auto");this.A.style.backgroundColor="black";this.A.cb();a=!0}this.Fa&&this.Fa.focus()}return a};
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-function Zd(a){for(var b=a.ya,c=-1,d=0,e=60==a.nc?2:5,f=0,h=0;d<a.ea;){for(var g=0,k=b,l=c;;){var n=xb(a.w,k++);if(127==(n&127)){var p=xb(a.w,k++),c=p&96,b=(p&15)<<8|xb(a.w,k),b=b+(p&16?8192:16384);break}if(g<a.xa.length)a.xa[g++]=n;else break}if(e)e--;else{for(;g<a.xa.length;)a.xa[g++]=0;if(0<=l)for(k=0;k<g;k++){n=a.xa[k];if(!a.za||n!==a.ra[f]){var p=a,x=a.bb,w=n&127;if(n=p.ua[l][n&128?1:0]){var t=(w&15)*n.la,w=(w>>4)*n.ga,z=void 0,u=void 0,E=void 0,A=void 0,ha=n.la,pa=n.ga;x?(z=k*p.la,u=d*p.ga,
-E=p.la,A=p.ga):(z=k*p.Hb,u=d*p.ec,E=p.Hb,A=p.ec);n.la>p.la&&(z*=2,E*=2);n.ga>p.ga&&(0==l&&(w+=p.ga),pa=p.ga);x?x.drawImage(n.canvas,t,w,ha,pa,z,u,E,A):(z+=0,u+=0,p.H.drawImage(n.canvas,t,w,ha,pa,z,u,E,A))}h++}f++}d++}}a.za=!0;h&&a.bb&&a.H.drawImage(a.L,0,0,a.J,a.ca-a.ga,0,0,a.ed,a.fd)}
+Rd.prototype.Ca=function(){if(2==this.Y){for(var a={0:[32,"SET-UP A"],2:[64,'TO EXIT PRESS "SET-UP"'],22:[96,"        T       T       T       T       T       T       T       T       T"],23:[96,"1234567890","1234567890","1234567890","1234567890","1234567890","1234567890","1234567890","1234567890"],24:[]},b=this.ya,c=-1,d=-1,e,f=-(60==this.qc?2:5);f<this.ea;f++){var h=a[f];if(0<=c){var g=!1,c=b+2;h?h.length?d=h[0]:(c=b-1,g=!0):32==d&&(h=a[f-1],d=0);e=d&96|c>>8&15|16;zb(this.w,b++,e);zb(this.w,b++,c&
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+function Ff(a,b,c){y.call(this,"Computer",a,Ff,67108864);this.B.ra=!1;Gf(this,b);this.aa=hc(this,"autoPower",a);this.A=0;this.ga=a.busWidth||a.buswidth;this.u=Hf;this.U=null;this.J=this.ea=!1;this.ka=hc(this,"url")||"";(Math.random()+.1).toString(36);this.C=If(this);if(this.b=cb("CPU",this.id)){this.G=cb("Debugger",this.id);this.I=[];for(b=null;b=qb(this,"Video",b);)this.I.push(b);this.w=new sb({id:this.Sb+".bus",busWidth:this.ga},this.b,this.G);var d,e=bb(this.id);if((this.D=cb("Panel",this.id))&&
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+b=null:delete this.Y);!b&&this.u&&(b=Jf(this))&&(this.J=!0);if(b){var h=this;oa(b,null,!0,function(a,b,c){c?(h.N=null,h.J=!1,h.fa("Unable to load machine state from server (error "+c+(b?": "+ja(b):"")+")")):(h.U=b,h.ea=!0);E(h)})}else E(this);this.L.power||(this.aa=!0);!c&&this.aa&&Kf(this,this.Cb)}else v("Unable to find CPU component")}Za(Ff);var Hf=0;function Gf(a,b){if(!b){var c;if("object"==typeof resources&&(c=resources.parms))try{b=eval("("+c+")")}catch(d){v(d.message+" ("+c+")")}}a.K=b}
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+function Lf(a,b){var c=new I(a,"1.23.3","validate");if(Df(c)&&Cf(c)){var d=Ef(c,"timestamp"),e=b?Ef(b,"timestamp"):"unknown";d!=e&&(a.fa("Machine state may be out-of-date\n("+d+" vs. "+e+")\nCheck your browser's local storage limits"),b||c.clear())}}m=Ff.prototype;
+m.Cb=function(a){void 0===a&&(a=this.u||(this.U?1:Hf));if(!this.A){this.A++;var b=!1,c=!1;this.da=!1;var d=this.Y||new I(this,"1.23.3");if(-1==a)b=!0;else if(a>Hf){if(Df(d,this.U)){this.H=new I(this,"1.23.3","failsafe");Df(this.H)&&(Mf(this,d),a=2,Af(this.H));J(this.H,"timestamp",ma());Bf(this.H);var e=this.u&&!this.J;if(1==a||sa("Click OK to restore the previous PC8080 machine state, or CANCEL to reset the machine.")){if(c=Cf(d)){var f=Ef(d,"code"),h=Ef(d,"data");f&&("ok"==f?Df(d,h):("error"==f&&
+"no machine state"!=h?(this.fa("Error: "+h),"unable to verify user"==h&&(wa("user",""),this.C=null)):this.g(f+": "+h),Af(d),Df(d)?(c=Cf(d),e=!0):c=!1))}e&&Lf(this,c?d:null)}else 2==a&&d.clear()}else Lf(this);delete this.U;delete this.Y}e=bb(this.id);for(f=0;f<e.length;f++)h=e[f],h!==this&&h!=this.b&&(c=Nf(this,h,d,b,c));b=[d,a,c];-1!=a?Kf(this,this.bc,b):this.bc(b)}};
+function Nf(a,b,c,d,e){if(!b.B.ra){b.B.ra=!0;if(b.Ca){var f=null;e&&((f=Ef(c,b.id))||(f=Ef(c,b.id.replace(/[a-z0-9]\./i,"."))));"string"===typeof f&&(f=null);!b.Ca(f,d)&&f&&(v("Unable to restore state for "+b.type),a.ca&&!a.ea?(c.clear(),a.u=Hf,window&&window.location.reload()):a.da=!0,b.Ca(null),e=!1)}if(!d&&b.gc)for(a=b.gc.split("|"),c=0;c<a.length;c++)b.status(a[c])}return e}
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+m.nc=function(){var a=this.i,a=a&~X.pa.lb;if((zb(this.a)&64)<<1&&(a|=X.pa.lb,a!=this.i)){var b;b=this.j&1;switch(this.j>>1&7){case X.qa.oa.Jb:this.m=this.m<<1|b;break;case X.qa.oa.Pb:b=cc(this);this.g[b]=16383;break;case X.qa.oa.Kb:this.c=this.c<<1|b;break;case X.qa.oa.fc:b=cc(this);this.g[b]=this.c&16383;break;case X.qa.oa.bc:b=cc(this);this.c=this.g[b];break;case X.qa.oa.cc:this.s=this.c&8192,this.c<<=1}}a&=~X.pa.mb;this.s&&(a|=X.pa.mb);return this.i=a};m.zc=function(a,b){this.C=b};
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+function Bb(a,b){for(var c=0;c<a.j.length;c++){var d=a.j[c],e=!0;if(0<=b){if(d.zb)if(b&1)e=d.a,e.D=e.D&-8|10,e=!1;else{var f=d.a;f.D=f.D&-8|9}if(f=e&&d.aa){for(var f=d.l,h=d.Na,g=!0,k=d.$>>>f.c;0<h&&k<f.b.length;)f.b[k].ca&&(f.b[k].ca=g=!1,f.b[k].wb=!0),h-=f.l,k++;f=g}f&&(e=!1)}if(e)if(1<d.O)switch(d.s){case 2:Ac(d)}else{var g=d.$,k=g+d.Na,l=0,p=0,n=0,e=d.i,H=0,f=d.C,J=h=0,V=d.ra,G=(1<<V)-1;d.qc&&(V=-V,J=16+V);for(;g<k;){var u;u=d.l;var A=g,M=A&u.f,pa=(A&u.g)>>>u.c;u=M!=u.f?u.b[pa].Gb(M,A):u.b[pa++].Xa(M,
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+ua(function(){for(var a=z(document,"pc8080-machine"),b=0;b<a.length;b++)for(var c=a[b],d=y(c),c=z(c,"pc8080","computer"),e=0;e<c.length;e++){var f=c[e],h=y(f),h=new Hc(h,d,!0);Ia(h,f);h.F&&Mc(h,h.Ja)}});qa.show.push(function(){for(var a=z(document,"pc8080","computer"),b=0;b<a.length;b++){var c=y(a[b]);(c=Ha("Computer",c.id))&&c.L&&!c.h.P&&c.Ja(-1)}});
+qa.exit.push(function(){for(var a=z(document,"pc8080","computer"),b=0;b<a.length;b++){var c=y(a[b]);(c=Ha("Computer",c.id))&&c.h.P&&Qc(c,!(!c.b||c.u),!0)}});var Tc=0;function Uc(a,b,c,d,e,f){e("Loading "+a+"...");r(a,null,!0,function(h,g,k){k?(g||(g="unable to load "+a+" ("+k+")"),f(g,null)):Vc(g,a,b,c,d,e,f)})}
+function Vc(a,b,c,d,e,f,h){function g(a,f){if(f)h(f,null);else{if(c){Fa(c,b,a);var g=b;g&&0>g.indexOf("/")&&"/"==window.location.pathname.slice(-1)&&(g=window.location.pathname+g);d?"}"==d.slice(-1)?(d=d.slice(0,-1),1<d.length&&(d+=",")):d='{state:"'+d+'",':d="{";d+='url:"'+g+'"}';"object"==typeof resources&&(g=null);a=a.replace(/(<machine[^>]*\sid=)(['"]).*?\2/,"$1$2"+c+"$2"+(d?" parms='"+d+"'":"")+(g?' url="'+g+'"':""))}e||(a=a.replace(/(<xsl:variable name="APPCLASS">).*?(<\/xsl:variable>)/,"$1pc8080$2"));
+g=null;if("<"==a.charAt(0))try{e||(a=a.replace(/<!DOCTYPE(.|[\r\n])*]>\s*/g,"")),window.ActiveXObject||"ActiveXObject"in window?(g=new window.ActiveXObject("Microsoft.XMLDOM"),g.async=!1,g.loadXML(a)):g=(new window.DOMParser).parseFromString(a,"text/xml")}catch(n){g=null,a=n.message}else a="unrecognized XML: "+(255<a.length?a.substr(0,255)+"...":a);h(a,g)}}a?e?Wc(a,f,g):g(a,null):h("no data"+(b?" for file: "+b:""),null)}
+function Wc(a,b,c){var d;if(d=/<([a-z]+)\s+ref="(.*?)"(.*?)\/>/g.exec(a)){var e=d[2];b("Loading "+e+"...");r(e,null,!0,function(f,h,g){if(g||!h)c(a,"unable to resolve XML reference: "+d[0]+" ("+g+")");else{if(f=d[3])if(g=h.match(new RegExp("<"+d[1]+"[^>]*>"))){for(var k=g[0],l,p=/( [a-z]+=)(['"])(.*?)\2/g;l=p.exec(f);)k=0>k.indexOf(l[1])?k.replace(">",l[0]+">"):k.replace(new RegExp(l[1]+"(['\"])(.*?)\\1"),l[0]);g[0]!=k&&(h=h.replace(g[0],k))}else{c(a,"missing <"+d[1]+"> in "+e);return}h=h.replace(/<\?xml[^>]*>[\r\n]*/,
+"");a=a.replace(d[0],h);Wc(a,b,c)}})}else c(a,null)}
+function Xc(a,b,c,d){function e(a){if(void 0===g){var b=h&&z(h,"machine-warning");g=b&&b[0]||h}g&&(g.innerHTML=fa(a))}function f(a){e("Error: "+a);k&&(--Tc||wa(!0));k=!1}var h,g,k=!0;Tc++;Ea[a]={};try{if(h=document.getElementById(a)){var l;if("object"==typeof resources&&(l=resources.css)){var p=document.head||document.getElementsByTagName("head")[0],n=document.createElement("style");n.type="text/css";n.styleSheet?n.styleSheet.cssText=l:n.appendChild(document.createTextNode(l));p.appendChild(n)}c||
+(c="/versions/pc8080/1.23.3/components.xsl");l=function(d,g){g?Uc(c,null,null,!1,e,function(d,k){if(k)if(Fa(a,c,d),e("Processing "+b+"..."),window.ActiveXObject||"ActiveXObject"in window){var l=g.transformNode(k);l?(h.outerHTML=l,--Tc||wa(!0)):f("transformNodeToObject failed")}else document.implementation&&document.implementation.createDocument?(l=new XSLTProcessor,l.importStylesheet(k),(l=l.transformToFragment(g,document))?h.parentNode?(h.parentNode.replaceChild(l,h),--Tc||wa(!0)):f("invalid machine element: "+
+a):f("transformToFragment failed")):f("unable to transform XML: unsupported browser");else f(d)}):f(d)};"<"!=b.charAt(0)?Uc(b,a,d,!0,e,l):Vc(b,null,a,d,!1,e,l)}else f("missing machine element: "+a)}catch(H){f(H.message)}return k}window.embedPC8080=function(a,b,c,d){wa(!1);return Xc(a,b,c,d)};window.enableEvents=wa;window.sendEvent=xa;
+function Yc(a,b,c,d){if(!c&&b){d.push(b);a=Ea[d[0]];b=null;for(var e in a)if(da(e,"components.xsl")){b=e.replace(".xsl",".css");break}b?r(b,null,!0,function(a,b){Zc(b,d)}):Zc(null,d)}else t("Error ("+c+") requesting "+a)}
+function Zc(a,b){var c,d,e,f=b[0],h=b[1];c=b[4];c=c.match(/^(\s*\(function\(\)\{)([\s\S]*)(}\)\(\);\s*)$/);var g=Ea[f],k={},l;for(l in g){var p=g[l],n=ca(l);if("xml"==n){for(n=/[ \t]*<disk [^>]*path=(['"])(.*?)\1.*?<\/disk>\n?/g;d=n.exec(g[l]);){var H=d[2];H&&(g[H]||(p=p.replace(d[0],"")))}d=l=ba(l)}else"xsl"==n&&(e=l=ba(l));k[l]=p}a&&(k[l="css"]=a);b[2]&&(k[l="parms"]=b[2]);b[3]&&(k[l="state"]=b[3]);d&&e?(l=JSON.stringify(k),h+=".js",c=c[1]+"var resources="+l+";"+c[2]+c[3],c=c.replace(/\u00A9/g,
 "&#xA9;"),l=h,g=null,k="data:application/javascript,",k=oa("Firefox")?k+encodeURIComponent(c):k+encodeURI(c),l&&(g=document.createElement("a"),"string"!=typeof g.download&&(g=null)),g?(g.href=k,g.download=l,document.body.appendChild(g),g.click(),document.body.removeChild(g),c="Check your Downloads folder for "+l+"."):(window.open(k),c="Check your browser for a new window/tab containing the requested data"+(l?" ("+l+")":"")+"."),c+=', copy it to your web server as "'+h+'", and then add the following to your web page:\n\n',
 c+='<div id="'+f+'"></div>\n',c+="...\n",c+='<script type="text/javascript" src="'+h+'">\x3c/script>\n',c+='<script type="text/javascript">embedPC("'+f+'","'+d+'","'+e+'");\x3c/script>\n\n',c+="The machine should appear where the <div> is located.",t(c)):t("Missing XML/XSL resources")}
-window.savePC=function(a,b,c){var d=Ha("Computer",a),e=Ha("Debugger",a);if(d){var f=Pc(d,!0),h=d.o?JSON.stringify(d.o):null;b||(b="/versions/pcjs/1.23.3/pc"+(e?"-dbg":"")+".js");if(c&&c({state:f,Cb:h}))return!0;r(b,null,!0,function(c,d,e){Xc(c,d,e,[a,ba(b,!0),h,f])});return!0}t("Unable to identify machine '"+a+"'");return!1};})();
+window.savePC=function(a,b,c){var d=Ha("Computer",a),e=Ha("Debugger",a);if(d){var f=Qc(d,!0),h=d.o?JSON.stringify(d.o):null;b||(b="/versions/pcjs/1.23.3/pc"+(e?"-dbg":"")+".js");if(c&&c({state:f,Fb:h}))return!0;r(b,null,!0,function(c,d,e){Yc(c,d,e,[a,ba(b,!0),h,f])});return!0}t("Unable to identify machine '"+a+"'");return!1};})();

From 276c36334e3afa816764d30333cf9394b78f0c4b Mon Sep 17 00:00:00 2001
From: Jeff Parsons <Jeff@pcjs.org>
Date: Sat, 6 Aug 2016 13:39:46 -0700
Subject: [PATCH 2/3] Added Debugger "int" command to manually request
 interrupts

---
 devices/pc8080/machine/invaders/README.md     |    1 -
 .../machine/invaders/debugger/README.md       |   27 +
 .../machine/invaders/debugger/machine.xml     |   24 +
 devices/pc8080/machine/invaders/machine.xml   |    4 +-
 devices/pc8080/machine/vt100/machine.xml      |    2 +-
 devices/pc8080/rom/vt100/README.md            |    2 +
 devices/pc8080/rom/vt100/VT100.asm            |    6 +-
 devices/pc8080/rom/vt100/VT100.json           | 1192 ++++++++++++++++-
 modules/filedump/lib/filedump.js              |    2 +-
 modules/pc8080/lib/chipset.js                 |   35 +-
 modules/pc8080/lib/debugger.js                |   77 +-
 11 files changed, 1328 insertions(+), 44 deletions(-)
 create mode 100644 devices/pc8080/machine/invaders/debugger/README.md
 create mode 100644 devices/pc8080/machine/invaders/debugger/machine.xml

diff --git a/devices/pc8080/machine/invaders/README.md b/devices/pc8080/machine/invaders/README.md
index d32fa2544..d7792bc66 100644
--- a/devices/pc8080/machine/invaders/README.md
+++ b/devices/pc8080/machine/invaders/README.md
@@ -5,7 +5,6 @@ permalink: /devices/pc8080/machine/invaders/
 machines:
   - type: pc8080
     id: invaders
-    debugger: true
 ---
 
 Space Invaders (1978)
diff --git a/devices/pc8080/machine/invaders/debugger/README.md b/devices/pc8080/machine/invaders/debugger/README.md
new file mode 100644
index 000000000..7ea9b9947
--- /dev/null
+++ b/devices/pc8080/machine/invaders/debugger/README.md
@@ -0,0 +1,27 @@
+---
+layout: page
+title: Space Invaders (1978) with Debugger
+permalink: /devices/pc8080/machine/invaders/debugger/
+machines:
+  - type: pc8080
+    id: invaders
+    debugger: true
+---
+
+Space Invaders (1978) with Debugger
+-----------------------------------
+
+The [PC8080](/modules/pc8080/) machine below is configured to run [Space Invaders](/devices/pc8080/machine/invaders/)
+with a Control Panel and Debugger.  It is currently playable only in desktop browsers and uses the following hard-coded
+key mappings:
+
+- 1: One Player
+- 2: Two Player
+- 3: Insert Coin
+- A: Move Left
+- D: Move Right
+- L: Fire Missile
+
+Click the "Run" button when you're ready to start the simulation. 
+
+{% include machine.html id="invaders" %}
diff --git a/devices/pc8080/machine/invaders/debugger/machine.xml b/devices/pc8080/machine/invaders/debugger/machine.xml
new file mode 100644
index 000000000..170279973
--- /dev/null
+++ b/devices/pc8080/machine/invaders/debugger/machine.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="/versions/pc8080/1.23.3/machine.xsl"?>
+<machine id="invaders" class="pc8080" border="1" pos="center" background="#FAEBD7">
+	<name pos="center">Space Invaders</name>
+	<computer id="computer" busWidth="16"/>
+	<cpu id="cpu8080" model="8080" cycles="2000000" autoStart="true"/>
+	<rom id="romH" addr="0x0000" size="0x0800" file="/devices/pc8080/rom/invaders/INVADERS-H.json"/>
+	<rom id="romG" addr="0x0800" size="0x0800" file="/devices/pc8080/rom/invaders/INVADERS-G.json"/>
+	<rom id="romF" addr="0x1000" size="0x0800" file="/devices/pc8080/rom/invaders/INVADERS-F.json"/>
+	<rom id="romE" addr="0x1800" size="0x0800" file="/devices/pc8080/rom/invaders/INVADERS-E.json"/>
+	<ram id="ram"  addr="0x2000" size="0x0400"/>
+	<video id="video" screenWidth="896" screenHeight="1024" bufferRotate="-90" smoothing="false" bufferAddr="0x2400" bufferCols="256" bufferRows="224" bufferBits="1" bufferLeft="0" interruptRate="120" width="40%" pos="left" padding="8px">
+		<menu>
+			<title>224x256 Screen (Rotated)</title>
+			<control type="container" pos="right">
+				<control type="button" binding="fullScreen" padleft="8px;line-height:1em">Full Screen</control>
+			</control>
+		</menu>
+	</video>
+	<chipset id="chipset" model="SI1978"/>
+	<keyboard id="keyboard"/>
+	<panel ref="/devices/pc8080/panel/left.xml"/>
+	<debugger id="debugger" commands="s 8086"/>
+</machine>
diff --git a/devices/pc8080/machine/invaders/machine.xml b/devices/pc8080/machine/invaders/machine.xml
index 170279973..99a0839bb 100644
--- a/devices/pc8080/machine/invaders/machine.xml
+++ b/devices/pc8080/machine/invaders/machine.xml
@@ -9,7 +9,7 @@
 	<rom id="romF" addr="0x1000" size="0x0800" file="/devices/pc8080/rom/invaders/INVADERS-F.json"/>
 	<rom id="romE" addr="0x1800" size="0x0800" file="/devices/pc8080/rom/invaders/INVADERS-E.json"/>
 	<ram id="ram"  addr="0x2000" size="0x0400"/>
-	<video id="video" screenWidth="896" screenHeight="1024" bufferRotate="-90" smoothing="false" bufferAddr="0x2400" bufferCols="256" bufferRows="224" bufferBits="1" bufferLeft="0" interruptRate="120" width="40%" pos="left" padding="8px">
+	<video id="video" screenWidth="896" screenHeight="1024" bufferRotate="-90" smoothing="false" bufferAddr="0x2400" bufferCols="256" bufferRows="224" bufferBits="1" bufferLeft="0" interruptRate="120" padding="8px">
 		<menu>
 			<title>224x256 Screen (Rotated)</title>
 			<control type="container" pos="right">
@@ -19,6 +19,4 @@
 	</video>
 	<chipset id="chipset" model="SI1978"/>
 	<keyboard id="keyboard"/>
-	<panel ref="/devices/pc8080/panel/left.xml"/>
-	<debugger id="debugger" commands="s 8086"/>
 </machine>
diff --git a/devices/pc8080/machine/vt100/machine.xml b/devices/pc8080/machine/vt100/machine.xml
index 5f347c243..3be3be0ba 100644
--- a/devices/pc8080/machine/vt100/machine.xml
+++ b/devices/pc8080/machine/vt100/machine.xml
@@ -26,5 +26,5 @@
 	<chipset id="chipset" model="VT100"/>
 	<keyboard id="keyboard"/>
 	<panel ref="/devices/pc8080/panel/wide.xml"/>
-	<debugger id="debugger" messages="port|mem" commands="s 8086"/>
+	<debugger id="debugger" messages="chipset|mem" commands="s 8086"/>
 </machine>
diff --git a/devices/pc8080/rom/vt100/README.md b/devices/pc8080/rom/vt100/README.md
index 5b0bb6793..0784ffe50 100644
--- a/devices/pc8080/rom/vt100/README.md
+++ b/devices/pc8080/rom/vt100/README.md
@@ -64,6 +64,8 @@ and passed on to the PC8080 Debugger.  Here are the rebuild steps:
 	grep -E "[0-9]+ [0-9A-D]+.*;;" VT100.lst | sed -E "s/ *[0-9]+ ([0-9A-F]+).*;(;.*)/     \1   .   \2/" > VT100.map
 	filedump --file=VT100.bin --format=bytes --output=VT100.json --comments --overwrite
 
+You can omit `--comments` to reduce the size of the [VT100.json](VT100.json) file.
+
 Some [VT100.asm](VT100.asm) clean-up remains, because there are still chunks of data that were incorrectly disassembled as code.
 From a reassembly standpoint, it doesn't matter too much, because such instructions get reassembled into the same original binary
 patterns, but from a readability standpoint, it's a nuisance.
diff --git a/devices/pc8080/rom/vt100/VT100.asm b/devices/pc8080/rom/vt100/VT100.asm
index 55a5c0863..32d070e3d 100644
--- a/devices/pc8080/rom/vt100/VT100.asm
+++ b/devices/pc8080/rom/vt100/VT100.asm
@@ -3703,8 +3703,8 @@ X18d7:	in	42h
 	jnz	X18d7
 	mvi	a,2fh		;; Write 0x2fh (standby) to nvr latch
 	out	62h
-	lxi	h,X21d3		;; HL=X21d3
-	mvi	b,0eh		;; B= 14 -- we're reading 14 bits
+	lxi	h,X21d3		;; HL = X21d3
+	mvi	b,0eh		;; B = 14 -- we're reading 14 bits
 X18e6:	in	42h
 	ana	c
 	jz	X18e6
@@ -3726,7 +3726,7 @@ X1900:	in	42h
 	jnz	X18f6		;; read next bit
 	mvi	a,2fh		;; send standby
 	out	62h
-	lxi	d,X21d3		;; DE=0x21d3
+	lxi	d,X21d3		;; DE = 0x21d3
 	mvi	b,0eh		;; B = 14
 	lxi	h,X0000		;; HL = 0
 X1916:	dad	h		;;
diff --git a/devices/pc8080/rom/vt100/VT100.json b/devices/pc8080/rom/vt100/VT100.json
index 2d628595a..a3cd89b9e 100644
--- a/devices/pc8080/rom/vt100/VT100.json
+++ b/devices/pc8080/rom/vt100/VT100.json
@@ -511,4 +511,1194 @@
   0x79,0xF6,0x04,0x4F,0xB7,0x79,0xC9,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // 0x00001FD0 y..O.y..........
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // 0x00001FE0 ................
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00] // 0x00001FF0 ................
-,"symbols":{".64":{"o":64,"a":"","c":"0x0f to NVR latch"},".66":{"o":66,"a":"","c":"invert A (0xf0)"},".67":{"o":67,"a":"","c":"0xf0 to brightness"},".69":{"o":69,"a":"","c":"zero A"},".70":{"o":70,"a":"","c":"zero D, L, H"},".73":{"o":73,"a":"","c":"next 2K ROM"},".74":{"o":74,"a":"","c":"store the current ROM # in B"},".75":{"o":75,"a":"","c":"show current ROM on LEDs"},".77":{"o":77,"a":"","c":"Checksum over 8 256B blocks"},".79":{"o":79,"a":"","c":"Rotate A left"},".80":{"o":80,"a":"","c":"A <- A ^ memory"},".81":{"o":81,"a":"","c":"next memory address"},".82":{"o":82,"a":"","c":"... repeat until end of block"},".85":{"o":85,"a":"","c":"next block"},".86":{"o":86,"a":"","c":"decrement block count"},".87":{"o":87,"a":"","c":"... repeat until end of chip"},".90":{"o":90,"a":"","c":"Check the value of the accumulator"},".91":{"o":91,"a":"","c":"If it's not zero, hang forever"},".94":{"o":94,"a":"","c":"Put the ROM # back in the accumulator"},".95":{"o":95,"a":"","c":"If it's not 4..."},".97":{"o":97,"a":"","c":"repeat for the next ROM"},".101":{"o":101,"a":"","c":"write 5 to LEDs (turns on L2 and L4)"},".103":{"o":103,"a":"","c":"Test pattern: 0xaa"},".105":{"o":105,"a":"","c":"0x2c is the top of RAM on the basic board"},".107":{"o":107,"a":""},".109":{"o":109,"a":"","c":"flags buffer &= 0x02 : is AVO installed?"},".111":{"o":111,"a":"","c":"if bit 2 is not set, AVO is installed"},".114":{"o":114,"a":"","c":"0x40 is the top of RAM on the AVO"},".116":{"o":116,"a":"","c":"load HL with top of RAM"},".117":{"o":117,"a":"","c":"dec HL"},".118":{"o":118,"a":"","c":"M <- 0"},".120":{"o":120,"a":"","c":"dec HL"},".121":{"o":121,"a":"","c":"a <- h"},".122":{"o":122,"a":"","c":"compare to 1f (top of ROM)"},".124":{"o":124,"a":"","c":"continue to zero if not at ROM"},".128":{"o":128,"a":"","c":"read a byte of memory"},".130":{"o":130,"a":"","c":"if it's zero, skip ahead"},".136":{"o":136,"a":"","c":"err"},".141":{"o":141,"a":"","c":"err"},".144":{"o":144,"a":"","c":"run test pattern through ram"},".147":{"o":147,"a":"","c":"jump to 00a8 if ok"},".153":{"o":153,"a":"","c":"err"},".158":{"o":158,"a":"","c":"ok"},".165":{"o":165,"a":"","c":"Hang if non-AVO memory"},".179":{"o":179,"a":"","c":"Repeat mem test with pattern 0x55"},".186":{"o":186,"a":"","c":"zero scratch and screen mem"},".189":{"o":189,"a":"","c":"Set a number of scratch values to fixed values"},".192":{"o":192,"a":"","c":".... more memory initialization"},".254":{"o":254,"a":"","c":"Read from keyboard port"},".258":{"o":258,"a":"","c":"copy b <- a"},".259":{"o":259,"a":"","c":"subtract 0x7c from a"},".261":{"o":261,"a":"","c":"jump to 011a if a is a normal key"},".264":{"o":264,"a":"","c":"otherwise h <- a"},".265":{"o":265,"a":"","c":"h++"},".266":{"o":266,"a":"","c":"a <- 0x10"},".274":{"o":274,"a":"","c":"load keys flag addresss"},".277":{"o":277,"a":"","c":"or in control bit"},".278":{"o":278,"a":"","c":"store again"},".279":{"o":279,"a":"","c":"jump to end to interrupt"},".282":{"o":282,"a":"","c":"load keys flag address"},".287":{"o":287,"a":"","c":"load key counter"},".288":{"o":288,"a":"","c":"if overflow.. (>3 keys)"},".290":{"o":290,"a":"","c":"discard keypress and end interrupt"},".293":{"o":293,"a":"","c":"otherwise increment key counter"},".294":{"o":294,"a":"","c":"load key address buffer?"},".297":{"o":297,"a":"","c":"add key counter to address buffer"},".300":{"o":300,"a":"","c":"save key to address buffer"},".676":{"o":676,"a":"","c":"HL <- 0x204e (top of stack)"},".679":{"o":679,"a":"","c":"DE <- 0x0fb2"},".682":{"o":682,"a":"","c":"B  <- 0"},".684":{"o":684,"a":"","c":"memset(0x204e,0,0xfb2)"},".687":{"o":687,"a":"","c":"invert A"},".688":{"o":688,"a":"","c":"store A in 0x2104"},".691":{"o":691,"a":"","c":"HL <- 0x2004"},".694":{"o":694,"a":"","c":"*(0x2052) = 0x2004"},".697":{"o":697,"a":"","c":"HL <- 0x22d0"},".700":{"o":700,"a":"","c":"*(20f6) = 0x22d0"},".704":{"o":704,"a":"","c":"0x2140 = 0xe605"},".707":{"o":707,"a":"","c":"HL = 0x2000"},".710":{"o":710,"a":"","c":"DE = 0x02d9"},".713":{"o":713,"a":"","c":"B = 18"},".715":{"o":715,"a":"","c":"copy 18 bytes from 0x02d9 to 0x2000"},".718":{"o":718,"a":"","c":"HL = 0x3000"},".721":{"o":721,"a":"","c":"DE = 0x1000"},".724":{"o":724,"a":"","c":"B = 0xFF"},".726":{"o":726,"a":"","c":"Set all of attribute RAM to 0xFF and return"},".747":{"o":747,"a":"","c":"HL = 0x0212"},".750":{"o":750,"a":"","c":"Store 0x1202 at 0x212d"},".753":{"o":753,"a":"","c":"A = 0x35"},".755":{"o":755,"a":"","c":"0x212c = 0x35"},".758":{"o":758,"a":"","c":"A = 1"},".760":{"o":760,"a":"","c":"0x205b = 1"},".763":{"o":763,"a":"","c":"0x2176 = 1"},".766":{"o":766,"a":"","c":"HL = 0x07ff"},".769":{"o":769,"a":"","c":"store 0xff07 at 0x2149"},".772":{"o":772,"a":"","c":"A = 2"},".774":{"o":774,"a":"","c":"0x2073 = 2"},".777":{"o":777,"a":"","c":"A = 0xf7"},".779":{"o":779,"a":"","c":"0x20fa = 0xf7"},".782":{"o":782,"a":"","c":"read flags buffer"},".784":{"o":784,"a":"","c":"And it with 0x04 (check graphics flag)"},".786":{"o":786,"a":"","c":"A=1"},".788":{"o":788,"a":"","c":"if no graphics skip"},".791":{"o":791,"a":"","c":"else store 1 in 0x2079"},".794":{"o":794,"a":"","c":"A = 0xff"},".796":{"o":796,"a":"","c":"0x210e = 0xff"},".799":{"o":799,"a":"","c":"0x21ba = 0xff"},".802":{"o":802,"a":"","c":"H = 0x80"},".804":{"o":804,"a":"","c":"L = 0x80"},".805":{"o":805,"a":"","c":"Store 0x8080 at 0x20c0"},".907":{"o":907,"a":"","c":"Load memory at DE into accumulator"},".908":{"o":908,"a":"","c":"Store it at HL"},".909":{"o":909,"a":"","c":"HL++"},".910":{"o":910,"a":"","c":"DE++"},".911":{"o":911,"a":"","c":"B--"},".912":{"o":912,"a":"","c":"until B is zero"},".975":{"o":975,"a":"","c":"Read from PUSART data"},".990":{"o":990,"a":"","c":"Read from PUSART ctrl"},".2260":{"o":2260,"a":"","c":"subtract 5 from A and return if negative"},".2263":{"o":2263,"a":"","c":"load jump table at 8e5"},".2266":{"o":2266,"a":"","c":"double a"},".2270":{"o":2270,"a":"","c":"hl = X08e5 + 2A"},".2271":{"o":2271,"a":"","c":"load DE from (HL) little-endian"},".2275":{"o":2275,"a":"","c":"zero A"},".2276":{"o":2276,"a":"","c":"jump to address"},".2279":{"o":2279,"a":"","c":"immediate return"},".2285":{"o":2285,"a":"","c":"MYSTERY ADDRESS: this isn't even in AVO!!!"},".2581":{"o":2581,"a":"","c":"HL = 0x05e6"},".2584":{"o":2584,"a":"","c":"0x2140 = 0xe605"},".4227":{"o":4227,"a":"","c":"M <- B"},".4228":{"o":4228,"a":"","c":"HL++"},".4229":{"o":4229,"a":"","c":"DE--"},".4230":{"o":4230,"a":""},".4231":{"o":4231,"a":"","c":"A = D | E"},".4232":{"o":4232,"a":"","c":"repeat if A != 0"},".5267":{"o":5267,"a":"","c":"Read flags buffer"},".5269":{"o":5269,"a":"","c":"check if transmit buffer is empty"},".5271":{"o":5271,"a":"","c":"if zero, return"},".5272":{"o":5272,"a":"","c":"HL = 0x2144"},".5275":{"o":5275,"a":"","c":"Load from 2144"},".5276":{"o":5276,"a":"","c":"Check if zero"},".5277":{"o":5277,"a":""},".5280":{"o":5280,"a":"","c":"If not, A = 10 (else A is zero)"},".5282":{"o":5282,"a":""},".5285":{"o":5285,"a":"","c":"or bits from 0x21a5"},".5286":{"o":5286,"a":""},".5289":{"o":5289,"a":"","c":"or bits from 0x2145"},".5290":{"o":5290,"a":""},".5291":{"o":5291,"a":"","c":"... and 0x2146"},".5292":{"o":5292,"a":""},".5293":{"o":5293,"a":"","c":"... and 0x2147"},".5294":{"o":5294,"a":"","c":"zero 0x2147"},".5296":{"o":5296,"a":""},".5297":{"o":5297,"a":"","c":"... and 0x2148"},".5298":{"o":5298,"a":"","c":"zero 0x2148"},".5300":{"o":5300,"a":"","c":"Write to keyboard buffer"},".5302":{"o":5302,"a":""},".5305":{"o":5305,"a":"","c":"Increment what's at 0x2074"},".5306":{"o":5306,"a":"","c":"load what's at 0x2077"},".5309":{"o":5309,"a":"","c":"return if it's not zero"},".5310":{"o":5310,"a":""},".5311":{"o":5311,"a":"","c":"A =  0x2065"},".5314":{"o":5314,"a":""},".5317":{"o":5317,"a":"","c":"return if [0x2065] | [0x2051] != 0"},".5979":{"o":5979,"a":"","c":"Initialize start of screen RAM and wipe attribute RAM to 0xff"},".5982":{"o":5982,"a":"","c":"B = 0x0a"},".5984":{"o":5984,"a":"","c":"D = 1"},".5986":{"o":5986,"a":"","c":"push B, D"},".5987":{"o":5987,"a":""},".5988":{"o":5988,"a":"","c":"Display wait message"},".5991":{"o":5991,"a":"","c":"pop D"},".5992":{"o":5992,"a":"","c":"disable interrupts(???)"},".5993":{"o":5993,"a":"","c":"HL = 0x217b"},".5996":{"o":5996,"a":"","c":"E = 0x33"},".5998":{"o":5998,"a":"","c":"C = 1"},".6000":{"o":6000,"a":"","c":"A = 0"},".6001":{"o":6001,"a":"","c":"0x21ae = A"},".6004":{"o":6004,"a":"","c":"A = C"},".6005":{"o":6005,"a":"","c":"0x21ad = A"},".6008":{"o":6008,"a":"","c":"push D,H"},".6009":{"o":6009,"a":""},".6010":{"o":6010,"a":"","c":"A=D"},".6011":{"o":6011,"a":"","c":"or A"},".6012":{"o":6012,"a":"","c":"load A from HL"},".6013":{"o":6013,"a":"","c":"store it in 0x21af"},".6016":{"o":6016,"a":"","c":"if A is 0 call X18ae"},".6019":{"o":6019,"a":"","c":"call X18a3"},".6022":{"o":6022,"a":"","c":"pop H,D"},".6078":{"o":6078,"a":"","c":"DE = 0x17ec"},".6081":{"o":6081,"a":"","c":"B = 7"},".6083":{"o":6083,"a":"","c":"HL = 0x21cc"},".6086":{"o":6086,"a":"","c":"Initialize 0x21cc to Wait message"},".6089":{"o":6089,"a":"","c":"HL = 0xcc71"},".6092":{"o":6092,"a":"","c":"retarget screen ram to display wait message"},".6108":{"o":6108,"a":"","c":"DE = 0x17f3"},".6111":{"o":6111,"a":"","c":"B = 11"},".6113":{"o":6113,"a":"","c":"store"},".6349":{"o":6349,"a":"","c":"Write READ command to NVR latch"},".6365":{"o":6365,"a":"","c":"Write 0x2fh (standby) to nvr latch"},".6369":{"o":6369,"a":"","c":"HL=X21d3"},".6372":{"o":6372,"a":"","c":"B= 14 -- we're reading 14 bits"},".6383":{"o":6383,"a":"","c":"wait for NVR clock L"},".6386":{"o":6386,"a":"","c":"shft bit out of nvr"},".6393":{"o":6393,"a":"","c":"wait for NVR clock H"},".6396":{"o":6396,"a":"","c":"read bit and store it in memory"},".6403":{"o":6403,"a":"","c":"wait for NVR clock L"},".6407":{"o":6407,"a":"","c":"read next bit"},".6410":{"o":6410,"a":"","c":"send standby"},".6414":{"o":6414,"a":"","c":"DE=0x21d3"},".6417":{"o":6417,"a":"","c":"B = 14"},".6419":{"o":6419,"a":"","c":"HL = 0"},".6422":{"o":6422,"a":""},".6423":{"o":6423,"a":"","c":"load next char"},".6424":{"o":6424,"a":"","c":"and with NVR data bit"},".6426":{"o":6426,"a":"","c":"rotate NVR bit to high bit"},".6436":{"o":6436,"a":"","c":"Store the finished data in 21af and 21ae"},".6440":{"o":6440,"a":"","c":"Load accumulator from 0x21ae -- (0x42)"},".6443":{"o":6443,"a":"","c":"B = 0xff"},".6445":{"o":6445,"a":"","c":"increment B"},".6446":{"o":6446,"a":"","c":"subtract 0x0a from accumulator"},".6448":{"o":6448,"a":"","c":"repeat while accumulator is positive"},".6451":{"o":6451,"a":"","c":"add 0x0a to accumulator"},".6453":{"o":6453,"a":"","c":"HL = 0x21d3"},".6456":{"o":6456,"a":"","c":"E = 0x23"},".6458":{"o":6458,"a":"","c":"D = 0x14"},".6460":{"o":6460,"a":""},".6461":{"o":6461,"a":"","c":"HL++"},".6462":{"o":6462,"a":"","c":"D--"},".6463":{"o":6463,"a":"","c":"repeat until D is zero"},".6466":{"o":6466,"a":"","c":"Store 0x2f in 21e7"},".6468":{"o":6468,"a":"","c":"HL = 0x21d3"},".6471":{"o":6471,"a":"","c":"copy A to E"},".6472":{"o":6472,"a":"","c":"clear D"},".6474":{"o":6474,"a":"","c":"add DE to HL -- calculate address of bit A"},".6475":{"o":6475,"a":"","c":"Store 0x22 in M"},".6477":{"o":6477,"a":"","c":"HL = 0x21d3"},".6480":{"o":6480,"a":"","c":"A = 0x0a"},".6482":{"o":6482,"a":"","c":"A = 0x0a + B"},".6496":{"o":6496,"a":""},".6500":{"o":6500,"a":"","c":"Flags Buffer & C"},".6505":{"o":6505,"a":"","c":"Return if B is negative"}}}
\ No newline at end of file
+,"symbols":{
+  ".64": {
+    "o": 64,
+    "a": "",
+    "c": "0x0f to NVR latch"
+  },
+  ".66": {
+    "o": 66,
+    "a": "",
+    "c": "invert A (0xf0)"
+  },
+  ".67": {
+    "o": 67,
+    "a": "",
+    "c": "0xf0 to brightness"
+  },
+  ".69": {
+    "o": 69,
+    "a": "",
+    "c": "zero A"
+  },
+  ".70": {
+    "o": 70,
+    "a": "",
+    "c": "zero D, L, H"
+  },
+  ".73": {
+    "o": 73,
+    "a": "",
+    "c": "next 2K ROM"
+  },
+  ".74": {
+    "o": 74,
+    "a": "",
+    "c": "store the current ROM # in B"
+  },
+  ".75": {
+    "o": 75,
+    "a": "",
+    "c": "show current ROM on LEDs"
+  },
+  ".77": {
+    "o": 77,
+    "a": "",
+    "c": "Checksum over 8 256B blocks"
+  },
+  ".79": {
+    "o": 79,
+    "a": "",
+    "c": "Rotate A left"
+  },
+  ".80": {
+    "o": 80,
+    "a": "",
+    "c": "A <- A ^ memory"
+  },
+  ".81": {
+    "o": 81,
+    "a": "",
+    "c": "next memory address"
+  },
+  ".82": {
+    "o": 82,
+    "a": "",
+    "c": "... repeat until end of block"
+  },
+  ".85": {
+    "o": 85,
+    "a": "",
+    "c": "next block"
+  },
+  ".86": {
+    "o": 86,
+    "a": "",
+    "c": "decrement block count"
+  },
+  ".87": {
+    "o": 87,
+    "a": "",
+    "c": "... repeat until end of chip"
+  },
+  ".90": {
+    "o": 90,
+    "a": "",
+    "c": "Check the value of the accumulator"
+  },
+  ".91": {
+    "o": 91,
+    "a": "",
+    "c": "If it's not zero, hang forever"
+  },
+  ".94": {
+    "o": 94,
+    "a": "",
+    "c": "Put the ROM # back in the accumulator"
+  },
+  ".95": {
+    "o": 95,
+    "a": "",
+    "c": "If it's not 4..."
+  },
+  ".97": {
+    "o": 97,
+    "a": "",
+    "c": "repeat for the next ROM"
+  },
+  ".101": {
+    "o": 101,
+    "a": "",
+    "c": "write 5 to LEDs (turns on L2 and L4)"
+  },
+  ".103": {
+    "o": 103,
+    "a": "",
+    "c": "Test pattern: 0xaa"
+  },
+  ".105": {
+    "o": 105,
+    "a": "",
+    "c": "0x2c is the top of RAM on the basic board"
+  },
+  ".107": {
+    "o": 107,
+    "a": ""
+  },
+  ".109": {
+    "o": 109,
+    "a": "",
+    "c": "flags buffer &= 0x02 : is AVO installed?"
+  },
+  ".111": {
+    "o": 111,
+    "a": "",
+    "c": "if bit 2 is not set, AVO is installed"
+  },
+  ".114": {
+    "o": 114,
+    "a": "",
+    "c": "0x40 is the top of RAM on the AVO"
+  },
+  ".116": {
+    "o": 116,
+    "a": "",
+    "c": "load HL with top of RAM"
+  },
+  ".117": {
+    "o": 117,
+    "a": "",
+    "c": "dec HL"
+  },
+  ".118": {
+    "o": 118,
+    "a": "",
+    "c": "M <- 0"
+  },
+  ".120": {
+    "o": 120,
+    "a": "",
+    "c": "dec HL"
+  },
+  ".121": {
+    "o": 121,
+    "a": "",
+    "c": "a <- h"
+  },
+  ".122": {
+    "o": 122,
+    "a": "",
+    "c": "compare to 1f (top of ROM)"
+  },
+  ".124": {
+    "o": 124,
+    "a": "",
+    "c": "continue to zero if not at ROM"
+  },
+  ".128": {
+    "o": 128,
+    "a": "",
+    "c": "read a byte of memory"
+  },
+  ".130": {
+    "o": 130,
+    "a": "",
+    "c": "if it's zero, skip ahead"
+  },
+  ".136": {
+    "o": 136,
+    "a": "",
+    "c": "err"
+  },
+  ".141": {
+    "o": 141,
+    "a": "",
+    "c": "err"
+  },
+  ".144": {
+    "o": 144,
+    "a": "",
+    "c": "run test pattern through ram"
+  },
+  ".147": {
+    "o": 147,
+    "a": "",
+    "c": "jump to 00a8 if ok"
+  },
+  ".153": {
+    "o": 153,
+    "a": "",
+    "c": "err"
+  },
+  ".158": {
+    "o": 158,
+    "a": "",
+    "c": "ok"
+  },
+  ".165": {
+    "o": 165,
+    "a": "",
+    "c": "Hang if non-AVO memory"
+  },
+  ".179": {
+    "o": 179,
+    "a": "",
+    "c": "Repeat mem test with pattern 0x55"
+  },
+  ".186": {
+    "o": 186,
+    "a": "",
+    "c": "zero scratch and screen mem"
+  },
+  ".189": {
+    "o": 189,
+    "a": "",
+    "c": "Set a number of scratch values to fixed values"
+  },
+  ".192": {
+    "o": 192,
+    "a": "",
+    "c": ".... more memory initialization"
+  },
+  ".254": {
+    "o": 254,
+    "a": "",
+    "c": "Read from keyboard port"
+  },
+  ".258": {
+    "o": 258,
+    "a": "",
+    "c": "copy b <- a"
+  },
+  ".259": {
+    "o": 259,
+    "a": "",
+    "c": "subtract 0x7c from a"
+  },
+  ".261": {
+    "o": 261,
+    "a": "",
+    "c": "jump to 011a if a is a normal key"
+  },
+  ".264": {
+    "o": 264,
+    "a": "",
+    "c": "otherwise h <- a"
+  },
+  ".265": {
+    "o": 265,
+    "a": "",
+    "c": "h++"
+  },
+  ".266": {
+    "o": 266,
+    "a": "",
+    "c": "a <- 0x10"
+  },
+  ".274": {
+    "o": 274,
+    "a": "",
+    "c": "load keys flag addresss"
+  },
+  ".277": {
+    "o": 277,
+    "a": "",
+    "c": "or in control bit"
+  },
+  ".278": {
+    "o": 278,
+    "a": "",
+    "c": "store again"
+  },
+  ".279": {
+    "o": 279,
+    "a": "",
+    "c": "jump to end to interrupt"
+  },
+  ".282": {
+    "o": 282,
+    "a": "",
+    "c": "load keys flag address"
+  },
+  ".287": {
+    "o": 287,
+    "a": "",
+    "c": "load key counter"
+  },
+  ".288": {
+    "o": 288,
+    "a": "",
+    "c": "if overflow.. (>3 keys)"
+  },
+  ".290": {
+    "o": 290,
+    "a": "",
+    "c": "discard keypress and end interrupt"
+  },
+  ".293": {
+    "o": 293,
+    "a": "",
+    "c": "otherwise increment key counter"
+  },
+  ".294": {
+    "o": 294,
+    "a": "",
+    "c": "load key address buffer?"
+  },
+  ".297": {
+    "o": 297,
+    "a": "",
+    "c": "add key counter to address buffer"
+  },
+  ".300": {
+    "o": 300,
+    "a": "",
+    "c": "save key to address buffer"
+  },
+  ".676": {
+    "o": 676,
+    "a": "",
+    "c": "HL <- 0x204e (top of stack)"
+  },
+  ".679": {
+    "o": 679,
+    "a": "",
+    "c": "DE <- 0x0fb2"
+  },
+  ".682": {
+    "o": 682,
+    "a": "",
+    "c": "B  <- 0"
+  },
+  ".684": {
+    "o": 684,
+    "a": "",
+    "c": "memset(0x204e,0,0xfb2)"
+  },
+  ".687": {
+    "o": 687,
+    "a": "",
+    "c": "invert A"
+  },
+  ".688": {
+    "o": 688,
+    "a": "",
+    "c": "store A in 0x2104"
+  },
+  ".691": {
+    "o": 691,
+    "a": "",
+    "c": "HL <- 0x2004"
+  },
+  ".694": {
+    "o": 694,
+    "a": "",
+    "c": "*(0x2052) = 0x2004"
+  },
+  ".697": {
+    "o": 697,
+    "a": "",
+    "c": "HL <- 0x22d0"
+  },
+  ".700": {
+    "o": 700,
+    "a": "",
+    "c": "*(20f6) = 0x22d0"
+  },
+  ".704": {
+    "o": 704,
+    "a": "",
+    "c": "0x2140 = 0xe605"
+  },
+  ".707": {
+    "o": 707,
+    "a": "",
+    "c": "HL = 0x2000"
+  },
+  ".710": {
+    "o": 710,
+    "a": "",
+    "c": "DE = 0x02d9"
+  },
+  ".713": {
+    "o": 713,
+    "a": "",
+    "c": "B = 18"
+  },
+  ".715": {
+    "o": 715,
+    "a": "",
+    "c": "copy 18 bytes from 0x02d9 to 0x2000"
+  },
+  ".718": {
+    "o": 718,
+    "a": "",
+    "c": "HL = 0x3000"
+  },
+  ".721": {
+    "o": 721,
+    "a": "",
+    "c": "DE = 0x1000"
+  },
+  ".724": {
+    "o": 724,
+    "a": "",
+    "c": "B = 0xFF"
+  },
+  ".726": {
+    "o": 726,
+    "a": "",
+    "c": "Set all of attribute RAM to 0xFF and return"
+  },
+  ".747": {
+    "o": 747,
+    "a": "",
+    "c": "HL = 0x0212"
+  },
+  ".750": {
+    "o": 750,
+    "a": "",
+    "c": "Store 0x1202 at 0x212d"
+  },
+  ".753": {
+    "o": 753,
+    "a": "",
+    "c": "A = 0x35"
+  },
+  ".755": {
+    "o": 755,
+    "a": "",
+    "c": "0x212c = 0x35"
+  },
+  ".758": {
+    "o": 758,
+    "a": "",
+    "c": "A = 1"
+  },
+  ".760": {
+    "o": 760,
+    "a": "",
+    "c": "0x205b = 1"
+  },
+  ".763": {
+    "o": 763,
+    "a": "",
+    "c": "0x2176 = 1"
+  },
+  ".766": {
+    "o": 766,
+    "a": "",
+    "c": "HL = 0x07ff"
+  },
+  ".769": {
+    "o": 769,
+    "a": "",
+    "c": "store 0xff07 at 0x2149"
+  },
+  ".772": {
+    "o": 772,
+    "a": "",
+    "c": "A = 2"
+  },
+  ".774": {
+    "o": 774,
+    "a": "",
+    "c": "0x2073 = 2"
+  },
+  ".777": {
+    "o": 777,
+    "a": "",
+    "c": "A = 0xf7"
+  },
+  ".779": {
+    "o": 779,
+    "a": "",
+    "c": "0x20fa = 0xf7"
+  },
+  ".782": {
+    "o": 782,
+    "a": "",
+    "c": "read flags buffer"
+  },
+  ".784": {
+    "o": 784,
+    "a": "",
+    "c": "And it with 0x04 (check graphics flag)"
+  },
+  ".786": {
+    "o": 786,
+    "a": "",
+    "c": "A=1"
+  },
+  ".788": {
+    "o": 788,
+    "a": "",
+    "c": "if no graphics skip"
+  },
+  ".791": {
+    "o": 791,
+    "a": "",
+    "c": "else store 1 in 0x2079"
+  },
+  ".794": {
+    "o": 794,
+    "a": "",
+    "c": "A = 0xff"
+  },
+  ".796": {
+    "o": 796,
+    "a": "",
+    "c": "0x210e = 0xff"
+  },
+  ".799": {
+    "o": 799,
+    "a": "",
+    "c": "0x21ba = 0xff"
+  },
+  ".802": {
+    "o": 802,
+    "a": "",
+    "c": "H = 0x80"
+  },
+  ".804": {
+    "o": 804,
+    "a": "",
+    "c": "L = 0x80"
+  },
+  ".805": {
+    "o": 805,
+    "a": "",
+    "c": "Store 0x8080 at 0x20c0"
+  },
+  ".907": {
+    "o": 907,
+    "a": "",
+    "c": "Load memory at DE into accumulator"
+  },
+  ".908": {
+    "o": 908,
+    "a": "",
+    "c": "Store it at HL"
+  },
+  ".909": {
+    "o": 909,
+    "a": "",
+    "c": "HL++"
+  },
+  ".910": {
+    "o": 910,
+    "a": "",
+    "c": "DE++"
+  },
+  ".911": {
+    "o": 911,
+    "a": "",
+    "c": "B--"
+  },
+  ".912": {
+    "o": 912,
+    "a": "",
+    "c": "until B is zero"
+  },
+  ".975": {
+    "o": 975,
+    "a": "",
+    "c": "Read from PUSART data"
+  },
+  ".990": {
+    "o": 990,
+    "a": "",
+    "c": "Read from PUSART ctrl"
+  },
+  ".2260": {
+    "o": 2260,
+    "a": "",
+    "c": "subtract 5 from A and return if negative"
+  },
+  ".2263": {
+    "o": 2263,
+    "a": "",
+    "c": "load jump table at 8e5"
+  },
+  ".2266": {
+    "o": 2266,
+    "a": "",
+    "c": "double a"
+  },
+  ".2270": {
+    "o": 2270,
+    "a": "",
+    "c": "hl = X08e5 + 2A"
+  },
+  ".2271": {
+    "o": 2271,
+    "a": "",
+    "c": "load DE from (HL) little-endian"
+  },
+  ".2275": {
+    "o": 2275,
+    "a": "",
+    "c": "zero A"
+  },
+  ".2276": {
+    "o": 2276,
+    "a": "",
+    "c": "jump to address"
+  },
+  ".2279": {
+    "o": 2279,
+    "a": "",
+    "c": "immediate return"
+  },
+  ".2285": {
+    "o": 2285,
+    "a": "",
+    "c": "MYSTERY ADDRESS: this isn't even in AVO!!!"
+  },
+  ".2581": {
+    "o": 2581,
+    "a": "",
+    "c": "HL = 0x05e6"
+  },
+  ".2584": {
+    "o": 2584,
+    "a": "",
+    "c": "0x2140 = 0xe605"
+  },
+  ".4227": {
+    "o": 4227,
+    "a": "",
+    "c": "M <- B"
+  },
+  ".4228": {
+    "o": 4228,
+    "a": "",
+    "c": "HL++"
+  },
+  ".4229": {
+    "o": 4229,
+    "a": "",
+    "c": "DE--"
+  },
+  ".4230": {
+    "o": 4230,
+    "a": ""
+  },
+  ".4231": {
+    "o": 4231,
+    "a": "",
+    "c": "A = D | E"
+  },
+  ".4232": {
+    "o": 4232,
+    "a": "",
+    "c": "repeat if A != 0"
+  },
+  ".5267": {
+    "o": 5267,
+    "a": "",
+    "c": "Read flags buffer"
+  },
+  ".5269": {
+    "o": 5269,
+    "a": "",
+    "c": "check if transmit buffer is empty"
+  },
+  ".5271": {
+    "o": 5271,
+    "a": "",
+    "c": "if zero, return"
+  },
+  ".5272": {
+    "o": 5272,
+    "a": "",
+    "c": "HL = 0x2144"
+  },
+  ".5275": {
+    "o": 5275,
+    "a": "",
+    "c": "Load from 2144"
+  },
+  ".5276": {
+    "o": 5276,
+    "a": "",
+    "c": "Check if zero"
+  },
+  ".5277": {
+    "o": 5277,
+    "a": ""
+  },
+  ".5280": {
+    "o": 5280,
+    "a": "",
+    "c": "If not, A = 10 (else A is zero)"
+  },
+  ".5282": {
+    "o": 5282,
+    "a": ""
+  },
+  ".5285": {
+    "o": 5285,
+    "a": "",
+    "c": "or bits from 0x21a5"
+  },
+  ".5286": {
+    "o": 5286,
+    "a": ""
+  },
+  ".5289": {
+    "o": 5289,
+    "a": "",
+    "c": "or bits from 0x2145"
+  },
+  ".5290": {
+    "o": 5290,
+    "a": ""
+  },
+  ".5291": {
+    "o": 5291,
+    "a": "",
+    "c": "... and 0x2146"
+  },
+  ".5292": {
+    "o": 5292,
+    "a": ""
+  },
+  ".5293": {
+    "o": 5293,
+    "a": "",
+    "c": "... and 0x2147"
+  },
+  ".5294": {
+    "o": 5294,
+    "a": "",
+    "c": "zero 0x2147"
+  },
+  ".5296": {
+    "o": 5296,
+    "a": ""
+  },
+  ".5297": {
+    "o": 5297,
+    "a": "",
+    "c": "... and 0x2148"
+  },
+  ".5298": {
+    "o": 5298,
+    "a": "",
+    "c": "zero 0x2148"
+  },
+  ".5300": {
+    "o": 5300,
+    "a": "",
+    "c": "Write to keyboard buffer"
+  },
+  ".5302": {
+    "o": 5302,
+    "a": ""
+  },
+  ".5305": {
+    "o": 5305,
+    "a": "",
+    "c": "Increment what's at 0x2074"
+  },
+  ".5306": {
+    "o": 5306,
+    "a": "",
+    "c": "load what's at 0x2077"
+  },
+  ".5309": {
+    "o": 5309,
+    "a": "",
+    "c": "return if it's not zero"
+  },
+  ".5310": {
+    "o": 5310,
+    "a": ""
+  },
+  ".5311": {
+    "o": 5311,
+    "a": "",
+    "c": "A =  0x2065"
+  },
+  ".5314": {
+    "o": 5314,
+    "a": ""
+  },
+  ".5317": {
+    "o": 5317,
+    "a": "",
+    "c": "return if [0x2065] | [0x2051] != 0"
+  },
+  ".5979": {
+    "o": 5979,
+    "a": "",
+    "c": "Initialize start of screen RAM and wipe attribute RAM to 0xff"
+  },
+  ".5982": {
+    "o": 5982,
+    "a": "",
+    "c": "B = 0x0a"
+  },
+  ".5984": {
+    "o": 5984,
+    "a": "",
+    "c": "D = 1"
+  },
+  ".5986": {
+    "o": 5986,
+    "a": "",
+    "c": "push B, D"
+  },
+  ".5987": {
+    "o": 5987,
+    "a": ""
+  },
+  ".5988": {
+    "o": 5988,
+    "a": "",
+    "c": "Display wait message"
+  },
+  ".5991": {
+    "o": 5991,
+    "a": "",
+    "c": "pop D"
+  },
+  ".5992": {
+    "o": 5992,
+    "a": "",
+    "c": "disable interrupts(???)"
+  },
+  ".5993": {
+    "o": 5993,
+    "a": "",
+    "c": "HL = 0x217b"
+  },
+  ".5996": {
+    "o": 5996,
+    "a": "",
+    "c": "E = 0x33"
+  },
+  ".5998": {
+    "o": 5998,
+    "a": "",
+    "c": "C = 1"
+  },
+  ".6000": {
+    "o": 6000,
+    "a": "",
+    "c": "A = 0"
+  },
+  ".6001": {
+    "o": 6001,
+    "a": "",
+    "c": "0x21ae = A"
+  },
+  ".6004": {
+    "o": 6004,
+    "a": "",
+    "c": "A = C"
+  },
+  ".6005": {
+    "o": 6005,
+    "a": "",
+    "c": "0x21ad = A"
+  },
+  ".6008": {
+    "o": 6008,
+    "a": "",
+    "c": "push D,H"
+  },
+  ".6009": {
+    "o": 6009,
+    "a": ""
+  },
+  ".6010": {
+    "o": 6010,
+    "a": "",
+    "c": "A=D"
+  },
+  ".6011": {
+    "o": 6011,
+    "a": "",
+    "c": "or A"
+  },
+  ".6012": {
+    "o": 6012,
+    "a": "",
+    "c": "load A from HL"
+  },
+  ".6013": {
+    "o": 6013,
+    "a": "",
+    "c": "store it in 0x21af"
+  },
+  ".6016": {
+    "o": 6016,
+    "a": "",
+    "c": "if A is 0 call X18ae"
+  },
+  ".6019": {
+    "o": 6019,
+    "a": "",
+    "c": "call X18a3"
+  },
+  ".6022": {
+    "o": 6022,
+    "a": "",
+    "c": "pop H,D"
+  },
+  ".6078": {
+    "o": 6078,
+    "a": "",
+    "c": "DE = 0x17ec"
+  },
+  ".6081": {
+    "o": 6081,
+    "a": "",
+    "c": "B = 7"
+  },
+  ".6083": {
+    "o": 6083,
+    "a": "",
+    "c": "HL = 0x21cc"
+  },
+  ".6086": {
+    "o": 6086,
+    "a": "",
+    "c": "Initialize 0x21cc to Wait message"
+  },
+  ".6089": {
+    "o": 6089,
+    "a": "",
+    "c": "HL = 0xcc71"
+  },
+  ".6092": {
+    "o": 6092,
+    "a": "",
+    "c": "retarget screen ram to display wait message"
+  },
+  ".6108": {
+    "o": 6108,
+    "a": "",
+    "c": "DE = 0x17f3"
+  },
+  ".6111": {
+    "o": 6111,
+    "a": "",
+    "c": "B = 11"
+  },
+  ".6113": {
+    "o": 6113,
+    "a": "",
+    "c": "store"
+  },
+  ".6349": {
+    "o": 6349,
+    "a": "",
+    "c": "Write READ command to NVR latch"
+  },
+  ".6365": {
+    "o": 6365,
+    "a": "",
+    "c": "Write 0x2fh (standby) to nvr latch"
+  },
+  ".6369": {
+    "o": 6369,
+    "a": "",
+    "c": "HL=X21d3"
+  },
+  ".6372": {
+    "o": 6372,
+    "a": "",
+    "c": "B= 14 -- we're reading 14 bits"
+  },
+  ".6383": {
+    "o": 6383,
+    "a": "",
+    "c": "wait for NVR clock L"
+  },
+  ".6386": {
+    "o": 6386,
+    "a": "",
+    "c": "shft bit out of nvr"
+  },
+  ".6393": {
+    "o": 6393,
+    "a": "",
+    "c": "wait for NVR clock H"
+  },
+  ".6396": {
+    "o": 6396,
+    "a": "",
+    "c": "read bit and store it in memory"
+  },
+  ".6403": {
+    "o": 6403,
+    "a": "",
+    "c": "wait for NVR clock L"
+  },
+  ".6407": {
+    "o": 6407,
+    "a": "",
+    "c": "read next bit"
+  },
+  ".6410": {
+    "o": 6410,
+    "a": "",
+    "c": "send standby"
+  },
+  ".6414": {
+    "o": 6414,
+    "a": "",
+    "c": "DE=0x21d3"
+  },
+  ".6417": {
+    "o": 6417,
+    "a": "",
+    "c": "B = 14"
+  },
+  ".6419": {
+    "o": 6419,
+    "a": "",
+    "c": "HL = 0"
+  },
+  ".6422": {
+    "o": 6422,
+    "a": ""
+  },
+  ".6423": {
+    "o": 6423,
+    "a": "",
+    "c": "load next char"
+  },
+  ".6424": {
+    "o": 6424,
+    "a": "",
+    "c": "and with NVR data bit"
+  },
+  ".6426": {
+    "o": 6426,
+    "a": "",
+    "c": "rotate NVR bit to high bit"
+  },
+  ".6436": {
+    "o": 6436,
+    "a": "",
+    "c": "Store the finished data in 21af and 21ae"
+  },
+  ".6440": {
+    "o": 6440,
+    "a": "",
+    "c": "Load accumulator from 0x21ae -- (0x42)"
+  },
+  ".6443": {
+    "o": 6443,
+    "a": "",
+    "c": "B = 0xff"
+  },
+  ".6445": {
+    "o": 6445,
+    "a": "",
+    "c": "increment B"
+  },
+  ".6446": {
+    "o": 6446,
+    "a": "",
+    "c": "subtract 0x0a from accumulator"
+  },
+  ".6448": {
+    "o": 6448,
+    "a": "",
+    "c": "repeat while accumulator is positive"
+  },
+  ".6451": {
+    "o": 6451,
+    "a": "",
+    "c": "add 0x0a to accumulator"
+  },
+  ".6453": {
+    "o": 6453,
+    "a": "",
+    "c": "HL = 0x21d3"
+  },
+  ".6456": {
+    "o": 6456,
+    "a": "",
+    "c": "E = 0x23"
+  },
+  ".6458": {
+    "o": 6458,
+    "a": "",
+    "c": "D = 0x14"
+  },
+  ".6460": {
+    "o": 6460,
+    "a": ""
+  },
+  ".6461": {
+    "o": 6461,
+    "a": "",
+    "c": "HL++"
+  },
+  ".6462": {
+    "o": 6462,
+    "a": "",
+    "c": "D--"
+  },
+  ".6463": {
+    "o": 6463,
+    "a": "",
+    "c": "repeat until D is zero"
+  },
+  ".6466": {
+    "o": 6466,
+    "a": "",
+    "c": "Store 0x2f in 21e7"
+  },
+  ".6468": {
+    "o": 6468,
+    "a": "",
+    "c": "HL = 0x21d3"
+  },
+  ".6471": {
+    "o": 6471,
+    "a": "",
+    "c": "copy A to E"
+  },
+  ".6472": {
+    "o": 6472,
+    "a": "",
+    "c": "clear D"
+  },
+  ".6474": {
+    "o": 6474,
+    "a": "",
+    "c": "add DE to HL -- calculate address of bit A"
+  },
+  ".6475": {
+    "o": 6475,
+    "a": "",
+    "c": "Store 0x22 in M"
+  },
+  ".6477": {
+    "o": 6477,
+    "a": "",
+    "c": "HL = 0x21d3"
+  },
+  ".6480": {
+    "o": 6480,
+    "a": "",
+    "c": "A = 0x0a"
+  },
+  ".6482": {
+    "o": 6482,
+    "a": "",
+    "c": "A = 0x0a + B"
+  },
+  ".6496": {
+    "o": 6496,
+    "a": ""
+  },
+  ".6500": {
+    "o": 6500,
+    "a": "",
+    "c": "Flags Buffer & C"
+  },
+  ".6505": {
+    "o": 6505,
+    "a": "",
+    "c": "Return if B is negative"
+  }
+}}
\ No newline at end of file
diff --git a/modules/filedump/lib/filedump.js b/modules/filedump/lib/filedump.js
index daf45eb9a..65393d50f 100644
--- a/modules/filedump/lib/filedump.js
+++ b/modules/filedump/lib/filedump.js
@@ -631,7 +631,7 @@ FileDump.prototype.loadMap = function(sMapFile, done)
                         done(new Error("unrecognized line (" + s + ") in MAP file: " + sMapName), null);
                         return;
                     }
-                    sMapData = JSON.stringify(aSymbols);
+                    sMapData = obj.fJSONComments? JSON.stringify(aSymbols, null, 2) : JSON.stringify(aSymbols);
                     if (sMapData) {
                         obj.json = '{' + obj.json + ',"symbols":' + sMapData + '}';
                     }
diff --git a/modules/pc8080/lib/chipset.js b/modules/pc8080/lib/chipset.js
index 804875450..00b8bc6a9 100644
--- a/modules/pc8080/lib/chipset.js
+++ b/modules/pc8080/lib/chipset.js
@@ -205,7 +205,8 @@ ChipSet.VT100 = {
             ERASE:          0x5,
             READ:           0x6,
             STANDBY:        0x7
-        }
+        },
+        WORDMASK:   0x3fff              // NVR words are 14-bit
     },
     DC012: {                            // generates scan counts for the Video Processor
         PORT:       0xA2,               // write-only
@@ -678,11 +679,11 @@ ChipSet.prototype.getNVRAddr = function()
 };
 
 /**
- * advanceNVR()
+ * doNVRCommand()
  */
-ChipSet.prototype.advanceNVR = function()
+ChipSet.prototype.doNVRCommand = function()
 {
-    var addr;
+    var addr, data;
     var bit = this.bNVRLatch & 0x1;
     var bCmd = (this.bNVRLatch >> 1) & 0x7;
 
@@ -696,7 +697,8 @@ ChipSet.prototype.advanceNVR = function()
 
     case ChipSet.VT100.NVR.CMD.ERASE:
         addr = this.getNVRAddr();
-        this.aNVRWords[addr] = 0x3fff;
+        this.aNVRWords[addr] = ChipSet.VT100.NVR.WORDMASK;
+        this.printMessage("doNVRCommand(): erase data at addr " + str.toHexWord(addr));
         break;
 
     case ChipSet.VT100.NVR.CMD.ACCEPT_DATA:
@@ -705,17 +707,32 @@ ChipSet.prototype.advanceNVR = function()
 
     case ChipSet.VT100.NVR.CMD.WRITE:
         addr = this.getNVRAddr();
-        this.aNVRWords[addr] = this.wNVRData & 0x3fff;
+        data = this.wNVRData & ChipSet.VT100.NVR.WORDMASK;
+        this.aNVRWords[addr] = data;
+        this.printMessage("doNVRCommand(): write data " + str.toHexWord(data) + " to addr " + str.toHexWord(addr));
         break;
 
     case ChipSet.VT100.NVR.CMD.READ:
         addr = this.getNVRAddr();
-        this.wNVRData = this.aNVRWords[addr];
+        data = this.aNVRWords[addr];
+        /*
+         * Since we don't explicitly initialize aNVRWords[], we pretend any uninitialized words contains WORDMASK.
+         */
+        if (data == null) data = ChipSet.VT100.NVR.WORDMASK;
+        this.wNVRData = data;
+        this.printMessage("doNVRCommand():  read data " + str.toHexWord(data) + " from addr " + str.toHexWord(addr));
         break;
 
     case ChipSet.VT100.NVR.CMD.SHIFT_OUT:
-        this.bNVROut = this.wNVRData & 0x2000;
         this.wNVRData <<= 1;
+        /*
+         * Since WORDMASK is 0x3fff, this will mask the shifted data with 0x4000, which is the bit we want to isolate.
+         */
+        this.bNVROut = this.wNVRData & (ChipSet.VT100.NVR.WORDMASK + 1);
+        break;
+
+    default:
+        this.printMessage("doNVRCommand(): unrecognized command " + str.toHexByte(bCmd));
         break;
     }
 };
@@ -738,7 +755,7 @@ ChipSet.prototype.inVT100FlagsBuffer = function(port, addrFrom)
     if (this.getVT100LBA(7)) {
         b |= ChipSet.VT100.FLAGS_BUFFER.NVR_CLK;
         if (b != this.bFlagsBuffer) {
-            this.advanceNVR();
+            this.doNVRCommand();
         }
     }
     b &= ~ChipSet.VT100.FLAGS_BUFFER.NVR_DATA;
diff --git a/modules/pc8080/lib/debugger.js b/modules/pc8080/lib/debugger.js
index 18d6e86e6..40816d6ba 100644
--- a/modules/pc8080/lib/debugger.js
+++ b/modules/pc8080/lib/debugger.js
@@ -230,30 +230,31 @@ if (DEBUGGER) {
      */
 
     Debugger.COMMANDS = {
-        '?':     "help/print",
-        'a [#]': "assemble",            // TODO: Implement this command someday
-        'b [#]': "breakpoint",          // multiple variations (use b? to list them)
-        'c':     "clear output",
-        'd [#]': "dump memory",         // additional syntax: d [#] [l#], where l# is a number of bytes to dump
-        'e [#]': "edit memory",
-        'f':     "frequencies",
-        'g [#]': "go [to #]",
-        'h':     "halt",
-        'i [#]': "input port #",
-        'if':    "eval expression",
-        'k':     "stack trace",
-        "ln":    "list nearest symbol(s)",
-        'm':     "messages",
-        'o [#]': "output port #",
-        'p':     "step over",           // other variations: pr (step and dump registers)
-        'print': "print expression",
-        'r':     "dump/set registers",
-        'reset': "reset machine",
-        's':     "set options",
-        't [#]': "trace",               // other variations: tr (trace and dump registers)
-        'u [#]': "unassemble",
-        'v':     "print version",
-        'var':   "assign variable"
+        '?':        "help/print",
+        'a [#]':    "assemble",             // TODO: Implement this command someday
+        'b [#]':    "breakpoint",           // multiple variations (use b? to list them)
+        'c':        "clear output",
+        'd [#]':    "dump memory",          // additional syntax: d [#] [l#], where l# is a number of bytes to dump
+        'e [#]':    "edit memory",
+        'f':        "frequencies",
+        'g [#]':    "go [to #]",
+        'h':        "halt",
+        'i [#]':    "input port #",
+        'if':       "eval expression",
+        'int [#]':  "request interrupt",
+        'k':        "stack trace",
+        "ln":       "list nearest symbol(s)",
+        'm':        "messages",
+        'o [#]':    "output port #",
+        'p':        "step over",            // other variations: pr (step and dump registers)
+        'print':    "print expression",
+        'r':        "dump/set registers",
+        'reset':    "reset machine",
+        's':        "set options",
+        't [#]':    "trace",                // other variations: tr (trace and dump registers)
+        'u [#]':    "unassemble",
+        'v':        "print version",
+        'var':      "assign variable"
     };
 
     Debugger.STYLE_8080 = 8080;
@@ -3288,7 +3289,7 @@ if (DEBUGGER) {
     {
         var s = "commands:";
         for (var sCommand in Debugger.COMMANDS) {
-            s += '\n' + str.pad(sCommand, 7) + Debugger.COMMANDS[sCommand];
+            s += '\n' + str.pad(sCommand, 9) + Debugger.COMMANDS[sCommand];
         }
         if (!this.checksEnabled()) s += "\nnote: frequency/history disabled if no exec breakpoints";
         this.println(s);
@@ -3799,6 +3800,26 @@ if (DEBUGGER) {
         }
     };
 
+    /**
+     * doInt(sLevel)
+     *
+     * @this {Debugger}
+     * @param {string} sLevel
+     * @return {boolean} true if success, false if error
+     */
+    Debugger.prototype.doInt = function(sLevel)
+    {
+        if (!this.cpu.getIF()) {
+            this.println("interrupts disabled (use rif=1 to enable)");
+            return false;
+        }
+        var nLevel = this.parseExpression(sLevel);
+        if (nLevel == null) return false;
+        this.println("requesting interrupt level " + nLevel);
+        this.cpu.requestINTR(nLevel);
+        return true;
+    };
+
     /**
      * doVar(sCmd)
      *
@@ -4686,6 +4707,12 @@ if (DEBUGGER) {
                         }
                         break;
                     }
+                    if (asArgs[0] == "int") {
+                        if (!this.doInt(asArgs[1])) {
+                            result = false;
+                        }
+                        break;
+                    }
                     this.doInput(asArgs[1]);
                     break;
                 case 'k':

From 62b8f504b37414b20719d527dc6a56f7f9de26fe Mon Sep 17 00:00:00 2001
From: Jeff Parsons <Jeff@pcjs.org>
Date: Sat, 6 Aug 2016 14:26:21 -0700
Subject: [PATCH 3/3] Added separate debugger/non-debugger machine configs for
 the PC8080 machines (like most PCx86 machines do)

---
 devices/pc8080/machine/invaders/README.md     |  72 +--
 .../machine/invaders/debugger/README.md       |  73 ++-
 devices/pc8080/machine/vt100/README.md        | 123 +----
 .../pc8080/machine/vt100/debugger/README.md   | 134 ++++++
 .../pc8080/machine/vt100/debugger/machine.xml |  30 ++
 devices/pc8080/machine/vt100/machine.xml      |   4 +-
 versions/pc8080/1.23.3/pc8080-dbg.js          | 419 +++++++++---------
 versions/pc8080/1.23.3/pc8080.js              | 146 +++---
 8 files changed, 532 insertions(+), 469 deletions(-)
 create mode 100644 devices/pc8080/machine/vt100/debugger/README.md
 create mode 100644 devices/pc8080/machine/vt100/debugger/machine.xml

diff --git a/devices/pc8080/machine/invaders/README.md b/devices/pc8080/machine/invaders/README.md
index d7792bc66..15b5864a5 100644
--- a/devices/pc8080/machine/invaders/README.md
+++ b/devices/pc8080/machine/invaders/README.md
@@ -11,7 +11,9 @@ Space Invaders (1978)
 ---
 
 This is a test of [PC8080](/modules/pc8080/), a new 8080-based machine emulator recently added to the
-PCjs Project.  It is currently playable only in desktop browsers and uses the following hard-coded key mappings:
+PCjs Project.
+
+It is currently playable only in desktop browsers and uses the following hard-coded key mappings:
 
 - 1: One Player
 - 2: Two Player
@@ -20,71 +22,7 @@ PCjs Project.  It is currently playable only in desktop browsers and uses the fo
 - D: Move Right
 - L: Fire Missile
 
-Assorted [Space Invaders Hardware Notes](#space-invaders-hardware-notes) are collected below.
+See the [Debugger Configuration](/devices/pc8080/machine/invaders/debugger/) for more control of the machine, along
+with assorted [Space Invaders Hardware Notes](/devices/pc8080/machine/invaders/debugger/#space-invaders-hardware-notes).
 
 {% include machine.html id="invaders" %}
-
-Space Invaders Hardware Notes
----
-
-### Memory Map
-
-	0000-1FFF  r   ROM code
-	2000-23FF  rw  RAM
-	2400-3FFF  rw  bitmapped screen (224x256)
-
-### I/O Map
-
-	00         r
-	01         r   control inputs
-	                bit 7
-	                bit 6    right
-	                bit 5    left
-	                bit 4    fire
-	                bit 3
-	                bit 2    1 player start
-	                bit 1    2 player start
-	                bit 0    coin slot
-	02         r   control inputs
-	                bit 7    0=display coin info
-	                bit 6    right 2
-	                bit 5    left 2
-	                bit 4    fire 2
-	                bit 3    bonus (1500,1000) / preset mode
-	                bit 2    1=tilt
-	                bit 0-1  initial lives (3,4,5,6) / (3,4)
-	02          w  shift count (0-7)
-	03         r   shifted value (low then high)
-	03          w  sound
-	                bit 4    bonus base
-	                bit 3    invader hit
-	                bit 2    base hit
-	                bit 1    base fire
-	                bit 0    saucer
-	04          w  value to shift
-	05          w  sound
-	                bit 5    flip video
-	                bit 4    saucer hit
-	                bit 3    invader movement 4
-	                bit 2    invader movement 3
-	                bit 1    invader movement 2
-	                bit 0    invader movement 1
-	06          w  watchdog timer clear
-
-Note that, unlike most emulators, PC8080 (like PCx86) has a *[Bus](/modules/pc8080/lib/bus.js)* architecture,
-allowing components to "plug in" different kinds of memory or memory-mapped devices at different addresses,
-and to register specific functions for specific I/O ports.	
-
-For example, Space Invaders has 8Kb of ROM at addresses 0x0000 through 0x1FFF, which means that if any 8080 code
-attempts to write to those addresses, nothing should happen.  Unfortunately, most emulators treat the entire address
-space as one contiguous array of bytes.  Which means either that the ROM is susceptible to corruption *or* that every
-write operation must check the address to determine its validity, which hurts the performance of *all* writes.
-
-In PC8080 (and PCx86), all writes are equally fast, and all ROMs are fully protected.  An exception is made for the
-Debugger, which allows you to use the "e" command to modify ("patch") ROM code on the fly, but that is completely
-outside and independent of the 8080 code being emulated.
-
-### Other Online References
-
-See [Computer Archeology](http://www.computerarcheology.com/Arcade/SpaceInvaders/) for an excellent collection
-of materials on the original Space Invaders, including commented ROM disassemblies. 
diff --git a/devices/pc8080/machine/invaders/debugger/README.md b/devices/pc8080/machine/invaders/debugger/README.md
index 7ea9b9947..9bc60c43f 100644
--- a/devices/pc8080/machine/invaders/debugger/README.md
+++ b/devices/pc8080/machine/invaders/debugger/README.md
@@ -12,8 +12,9 @@ Space Invaders (1978) with Debugger
 -----------------------------------
 
 The [PC8080](/modules/pc8080/) machine below is configured to run [Space Invaders](/devices/pc8080/machine/invaders/)
-with a Control Panel and Debugger.  It is currently playable only in desktop browsers and uses the following hard-coded
-key mappings:
+with a Control Panel and Debugger.
+
+It is currently playable only in desktop browsers and uses the following hard-coded key mappings:
 
 - 1: One Player
 - 2: Two Player
@@ -22,6 +23,72 @@ key mappings:
 - D: Move Right
 - L: Fire Missile
 
-Click the "Run" button when you're ready to start the simulation. 
+Click the "Run" button to start the simulation.  You'll also find assorted
+[Space Invaders Hardware Notes](#space-invaders-hardware-notes) below.
 
 {% include machine.html id="invaders" %}
+
+Space Invaders Hardware Notes
+-----------------------------
+
+### Memory Map
+
+	0000-1FFF  r   ROM code
+	2000-23FF  rw  RAM
+	2400-3FFF  rw  bitmapped screen (224x256)
+
+### I/O Map
+
+	00         r
+	01         r   control inputs
+	                bit 7
+	                bit 6    right
+	                bit 5    left
+	                bit 4    fire
+	                bit 3
+	                bit 2    1 player start
+	                bit 1    2 player start
+	                bit 0    coin slot
+	02         r   control inputs
+	                bit 7    0=display coin info
+	                bit 6    right 2
+	                bit 5    left 2
+	                bit 4    fire 2
+	                bit 3    bonus (1500,1000) / preset mode
+	                bit 2    1=tilt
+	                bit 0-1  initial lives (3,4,5,6) / (3,4)
+	02          w  shift count (0-7)
+	03         r   shifted value (low then high)
+	03          w  sound
+	                bit 4    bonus base
+	                bit 3    invader hit
+	                bit 2    base hit
+	                bit 1    base fire
+	                bit 0    saucer
+	04          w  value to shift
+	05          w  sound
+	                bit 5    flip video
+	                bit 4    saucer hit
+	                bit 3    invader movement 4
+	                bit 2    invader movement 3
+	                bit 1    invader movement 2
+	                bit 0    invader movement 1
+	06          w  watchdog timer clear
+
+Note that, unlike most emulators, PC8080 (like PCx86) has a *[Bus](/modules/pc8080/lib/bus.js)* architecture,
+allowing components to "plug in" different kinds of memory or memory-mapped devices at different addresses,
+and to register specific functions for specific I/O ports.	
+
+For example, Space Invaders has 8Kb of ROM at addresses 0x0000 through 0x1FFF, which means that if any 8080 code
+attempts to write to those addresses, nothing should happen.  Unfortunately, most emulators treat the entire address
+space as one contiguous array of bytes.  Which means either that the ROM is susceptible to corruption *or* that every
+write operation must check the address to determine its validity, which hurts the performance of *all* writes.
+
+In PC8080 (and PCx86), all writes are equally fast, and all ROMs are fully protected.  An exception is made for the
+Debugger, which allows you to use the "e" command to modify ("patch") ROM code on the fly, but that is completely
+outside and independent of the 8080 code being emulated.
+
+### Other Online References
+
+See [Computer Archeology](http://www.computerarcheology.com/Arcade/SpaceInvaders/) for an excellent collection
+of materials on the original Space Invaders, including commented ROM disassemblies. 
diff --git a/devices/pc8080/machine/vt100/README.md b/devices/pc8080/machine/vt100/README.md
index a17fc49e0..6e40a91c0 100644
--- a/devices/pc8080/machine/vt100/README.md
+++ b/devices/pc8080/machine/vt100/README.md
@@ -11,121 +11,16 @@ machines:
 DEC VT100 Terminal
 ------------------
 
-This is a work-in-progress emulation of another 8080-based machine: the VT100 Terminal.
+This is a PCjs work-in-progress emulation of another 8080-based machine: the VT100 Terminal.
 
-Unlike other VT100 emulators, this is not simply an emulation of VT100 protocols.  It is a simulation of the original VT100
+Unlike other VT100 emulators, it is not simply an emulation of VT100 protocols.  It is a simulation of the original VT100
 machine, running the [VT100 Firmware](/devices/pc8080/rom/vt100/) inside the [PC8080](/modules/pc8080/) CPU emulator.
 
+Admittedly, terminals aren't that useful in isolation, since they're designed to be connected to other (host) machines.
+But once this PCjs VT100 Terminal simulation is fully operational, you can expect to see it used in conjunction with a variety
+of other PCjs machines. 
+
+For now, play with the [Debugger Configuration](/devices/pc8080/machine/vt100/debugger/), which also provides information
+about VT100 internals and links to other technical resources.
+
 {% include machine.html id="vt100" %}
-
-VT100 Memory Usage
-------------------
-
-As described in the [Technical Manual (July 1982)](http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/terminal/vt100/EK-VT100-TM-003_VT100_Technical_Manual_Jul82.pdf),
-p. 4-15, 8Kb (0x2000) of ROM is located at 0x0000, and 3Kb (0x0C00) of RAM immediately follows it at 0x2000.  The ROM at
-0x0000 contains all the VT100's 8080 code.  The VT100 also contains a 2Kb character generator ROM, but that ROM is not
-addressable by the CPU; it is used directly by the Video Processor.
-
-See [DEC VT100 ROMs](/devices/pc8080/rom/vt100/) for more information about the ROMs.
-
-[vt100romhax](http://vt100romhax.tumblr.com/post/90697428973/the-vt100-memory-map-and-8080-disassembly)
-(aka [phooky](https://github.com/phooky) aka Adam Mayer) further explains VT100 memory usage:
-
-	Start   End     Size    Description
-	0x0000  0x1fff  8K      Basic ROM
-	0x2000  0x2012  18B     Blank lines for refresh (6 x 3B)
-	0x2012  0x204f  61B     Stack area (grows down from 0x204e)
-	0x204f  0x22d0  641B    Scratch Pad/Setup Area(?)
-	0x22d0  0x2c00  2352B   Screen RAM
-
-VT100 I/O Ports
----------------
-
-From p. 4-17 of the Technical Manual:
-
-	READ OR WRITE
-	00H     PUSART data bus
-	01H     PUSART command port
-	
-	WRITE ONLY (Decoded with I/O WR L)
-	02H     Baud rate generator
-	42H     Brightness D/A latch
-	62H     NVR latch
-	82H     Keyboard UART data input
-	A2H     Video processor DC012
-	C2H     Video processor DC011
-	E2H     Graphics port
-	
-	READ ONLY (Decoded with I/O RD L)
-	22H     Modem buffer
-	42H     Flags buffer
-	82H     Keyboard UART data output
-
-The PC8080 ChipSet component deals with the ER1400's Non-volatile RAM (NVR) ports, the Flags buffer, and the
-DC011 and DC012 circuits, while the Keyboard component deals with the Keyboard UART.
-
-You might wonder why the PC8080 Video component doesn't manage the DC011 and DC012.  In fact, the above labels are misleading.
-If you look at the Functional Diagram on p. 4-53 of the Technical Manual, you'll see that DC011 and DC012 are really
-peripheral components providing inputs to the Video Processor.  Moreover, they are not exclusive to the Video Processor.
-For example, the LBA7 output of the DC011 is also used to clock the NVR chip.
-
-In most respects, the VT100 Technical Manual provides a phenomenal amount of detail.
-However, documentation for some of the above ports is almost non-existent.  It's only thanks to
-[third parties](https://github.com/phooky/VT100-Hax/blob/master/Platform%20Notes.md) that we have, for example, the following
-information about the Flags buffer (port 0x42):
-
-	Bit Active? Description
-	7   H       KBD Transmit Buffer Empty
-	6   H       LBA 7(?) (It's a pin on the backplane connector...) - used to clock NVR - line buffer address
-	5   H       NVR DATA
-	4   L       EVEN FIELD (comes out of the video timing generator)
-	3   H       OPTION PRESENT (terminal output option???)
-	2   L       GRAPHICS FLAG (is VT52 graphics card present) [I think he meant VT125 -JP]
-	1   L       ADVANCED VIDEO (is AVO present)
-	0   H       XMIT FLAG
-
-VT100 Video Processor
----------------------
-
-Normally, the PC8080 Video component allocates its own video buffer, based on the specified buffer address
-(*bufferAddr*) and other dimensions (eg, *bufferCols* and *bufferRows*), but the VT100 is a little unusual:
-it has a custom Video Processor that uses DMA to request character data from any region of RAM, one line at a time.
-It always defaults to address 0x2000 for the first line of character data, but each line terminates with 3 bytes
-containing the attributes and address of the next line, so the location of subsequent lines will vary, depending
-on the type of line:
-
-- Single-wide characters (80 or 132 columns)
-- Double-wide characters (40 or 66 columns)
-
-In addition to single-wide vs. double-wide, line attributes can also specify double-high, along with whether the
-top or bottom halves of the double-high characters should be displayed, because double-high always implies double-wide
-(ie, there is no support for double-high, single-wide characters).
-
-Conssequently, a VT100 [machine XML file](machine.xml) must set the Video component's *bufferRAM* property
-to "true", indicating that existing RAM should be used, and a new property, *bufferFormat* must be set to "vt100",
-enabling support for the VT100's line data format; eg:
-
-	<ram id="ram" addr="0x2000" size="0x0C00"/>
-	<video id="video" screenWidth="1600" screenHeight="960" bufferAddr="0x2000" bufferRAM="true" bufferFormat="vt100" bufferCols="80" bufferRows="24" ...>
-
-VT100 Screen and Character Dimensions
--------------------------------------
-
-Ordinarily, the VT100 screen displays 800 dots per horizontal scan, and a total of 240 horizontal scans, and by default,
-it uses a 10x10 character cell, for a total of 80 columns and 24 rows of characters.  However, in 132-column mode, it
-uses a 9x10 character cell instead, implying a total of 1188 dots displayed per horizontal scan.  This means we will have
-to dynamically reallocate our internal buffers whenever the horizontal dimensions change.  Also, if no AVO expansion
-card is present, there is only enough RAM available for 14 rows of characters in 132-column mode. 
-
-For optimum scaling, I define the virtual screen size using multiples of the VT100's default "dot" dimensions; eg, 1600x960
-(a horizontal multiplier of 2 and a vertical multiplier of 4).  That gives us a virtual screen aspect ratio of 1.67.
-
-According to the Technical Manual, a physical VT100 screen measures 12 inches diagonally, and in 80-column mode, characters
-measure 2.0mm x 3.35mm (in 132-column mode, they measure 1.3mm x 3.35mm), which suggests that the text area of the screen is
-roughly 160mm x 80mm, implying a screen aspect ratio of 2.0.  However, after visually comparing the Technical Manual's SET-UP
-screenshots to our test screens, 1.67 appears to be closer to reality than 2.0.  I'll revisit this issue at a later date.  
-
-Additional VT100 Resources
---------------------------
-
-[VT100 Publications](/pubs/dec/vt100/)
diff --git a/devices/pc8080/machine/vt100/debugger/README.md b/devices/pc8080/machine/vt100/debugger/README.md
new file mode 100644
index 000000000..cf80ad386
--- /dev/null
+++ b/devices/pc8080/machine/vt100/debugger/README.md
@@ -0,0 +1,134 @@
+---
+layout: page
+title: DEC VT100 Terminal
+permalink: /devices/pc8080/machine/vt100/debugger/
+machines:
+  - type: pc8080
+    id: vt100
+    debugger: true
+---
+
+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.
+
+Click the "Run" button to start the simulation.  You'll also find assorted
+[Hardware Notes](#vt100-memory-usage) below.
+
+{% include machine.html id="vt100" %}
+
+VT100 Memory Usage
+------------------
+
+As described in the [Technical Manual (July 1982)](http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/terminal/vt100/EK-VT100-TM-003_VT100_Technical_Manual_Jul82.pdf),
+p. 4-15, 8Kb (0x2000) of ROM is located at 0x0000, and 3Kb (0x0C00) of RAM immediately follows it at 0x2000.  The ROM at
+0x0000 contains all the VT100's 8080 code.  The VT100 also contains a 2Kb character generator ROM, but that ROM is not
+addressable by the CPU; it is used directly by the Video Processor.
+
+See [DEC VT100 ROMs](/devices/pc8080/rom/vt100/) for more information about the ROMs.
+
+[vt100romhax](http://vt100romhax.tumblr.com/post/90697428973/the-vt100-memory-map-and-8080-disassembly)
+(aka [phooky](https://github.com/phooky) aka Adam Mayer) further explains VT100 memory usage:
+
+	Start   End     Size    Description
+	0x0000  0x1fff  8K      Basic ROM
+	0x2000  0x2012  18B     Blank lines for refresh (6 x 3B)
+	0x2012  0x204f  61B     Stack area (grows down from 0x204e)
+	0x204f  0x22d0  641B    Scratch Pad/Setup Area(?)
+	0x22d0  0x2c00  2352B   Screen RAM
+
+VT100 I/O Ports
+---------------
+
+From p. 4-17 of the Technical Manual:
+
+	READ OR WRITE
+	00H     PUSART data bus
+	01H     PUSART command port
+	
+	WRITE ONLY (Decoded with I/O WR L)
+	02H     Baud rate generator
+	42H     Brightness D/A latch
+	62H     NVR latch
+	82H     Keyboard UART data input
+	A2H     Video processor DC012
+	C2H     Video processor DC011
+	E2H     Graphics port
+	
+	READ ONLY (Decoded with I/O RD L)
+	22H     Modem buffer
+	42H     Flags buffer
+	82H     Keyboard UART data output
+
+The PC8080 ChipSet component deals with the ER1400's Non-volatile RAM (NVR) ports, the Flags buffer, and the
+DC011 and DC012 circuits, while the Keyboard component deals with the Keyboard UART.
+
+You might wonder why the PC8080 Video component doesn't manage the DC011 and DC012.  In fact, the above labels are misleading.
+If you look at the Functional Diagram on p. 4-53 of the Technical Manual, you'll see that DC011 and DC012 are really
+peripheral components providing inputs to the Video Processor.  Moreover, they are not exclusive to the Video Processor.
+For example, the LBA7 output of the DC011 is also used to clock the NVR chip.
+
+In most respects, the VT100 Technical Manual provides a phenomenal amount of detail.
+However, documentation for some of the above ports is almost non-existent.  It's only thanks to
+[third parties](https://github.com/phooky/VT100-Hax/blob/master/Platform%20Notes.md) that we have, for example, the following
+information about the Flags buffer (port 0x42):
+
+	Bit Active? Description
+	7   H       KBD Transmit Buffer Empty
+	6   H       LBA 7(?) (It's a pin on the backplane connector...) - used to clock NVR - line buffer address
+	5   H       NVR DATA
+	4   L       EVEN FIELD (comes out of the video timing generator)
+	3   H       OPTION PRESENT (terminal output option???)
+	2   L       GRAPHICS FLAG (is VT52 graphics card present) [I think he meant VT125 -JP]
+	1   L       ADVANCED VIDEO (is AVO present)
+	0   H       XMIT FLAG
+
+VT100 Video Processor
+---------------------
+
+Normally, the PC8080 Video component allocates its own video buffer, based on the specified buffer address
+(*bufferAddr*) and other dimensions (eg, *bufferCols* and *bufferRows*), but the VT100 is a little unusual:
+it has a custom Video Processor that uses DMA to request character data from any region of RAM, one line at a time.
+It always defaults to address 0x2000 for the first line of character data, but each line terminates with 3 bytes
+containing the attributes and address of the next line, so the location of subsequent lines will vary, depending
+on the type of line:
+
+- Single-wide characters (80 or 132 columns)
+- Double-wide characters (40 or 66 columns)
+
+In addition to single-wide vs. double-wide, line attributes can also specify double-high, along with whether the
+top or bottom halves of the double-high characters should be displayed, because double-high always implies double-wide
+(ie, there is no support for double-high, single-wide characters).
+
+Conssequently, a VT100 [machine XML file](machine.xml) must set the Video component's *bufferRAM* property
+to "true", indicating that existing RAM should be used, and a new property, *bufferFormat* must be set to "vt100",
+enabling support for the VT100's line data format; eg:
+
+	<ram id="ram" addr="0x2000" size="0x0C00"/>
+	<video id="video" screenWidth="1600" screenHeight="960" bufferAddr="0x2000" bufferRAM="true" bufferFormat="vt100" bufferCols="80" bufferRows="24" ...>
+
+VT100 Screen and Character Dimensions
+-------------------------------------
+
+Ordinarily, the VT100 screen displays 800 dots per horizontal scan, and a total of 240 horizontal scans, and by default,
+it uses a 10x10 character cell, for a total of 80 columns and 24 rows of characters.  However, in 132-column mode, it
+uses a 9x10 character cell instead, implying a total of 1188 dots displayed per horizontal scan.  This means we will have
+to dynamically reallocate our internal buffers whenever the horizontal dimensions change.  Also, if no AVO expansion
+card is present, there is only enough RAM available for 14 rows of characters in 132-column mode. 
+
+For optimum scaling, I define the virtual screen size using multiples of the VT100's default "dot" dimensions; eg, 1600x960
+(a horizontal multiplier of 2 and a vertical multiplier of 4).  That gives us a virtual screen aspect ratio of 1.67.
+
+According to the Technical Manual, a physical VT100 screen measures 12 inches diagonally, and in 80-column mode, characters
+measure 2.0mm x 3.35mm (in 132-column mode, they measure 1.3mm x 3.35mm), which suggests that the text area of the screen is
+roughly 160mm x 80mm, implying a screen aspect ratio of 2.0.  However, after visually comparing the Technical Manual's SET-UP
+screenshots to our test screens, 1.67 appears to be closer to reality than 2.0.  I'll revisit this issue at a later date.  
+
+Additional VT100 Resources
+--------------------------
+
+[VT100 Publications](/pubs/dec/vt100/)
+
diff --git a/devices/pc8080/machine/vt100/debugger/machine.xml b/devices/pc8080/machine/vt100/debugger/machine.xml
new file mode 100644
index 000000000..bf2bf441f
--- /dev/null
+++ b/devices/pc8080/machine/vt100/debugger/machine.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="/versions/pc8080/1.23.3/machine.xsl"?>
+<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"/>
+	<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"
+		   fontROM="/devices/pc8080/rom/vt100/23-018E2.json" fontColor="white" cellWidth="10" cellHeight="10"
+		   bufferAddr="0x2000" bufferRAM="true" bufferFormat="vt100" bufferCols="80" bufferRows="24" pos="left" padding="8px">
+		<menu>
+			<title>VT100 Screen</title>
+			<control type="container" pos="right">
+				<control type="rled" label="ON LINE" binding="online" padleft="8px"/>
+				<control type="rled" label="LOCAL" binding="local" padleft="8px"/>
+				<control type="rled" label="LOCKED" binding="locked" padleft="8px"/>
+				<control type="rled" label="L1" binding="l1" padleft="8px"/>
+				<control type="rled" label="L2" binding="l2" padleft="8px"/>
+				<control type="rled" label="L3" binding="l3" padleft="8px"/>
+				<control type="rled" label="L4" binding="l4" padleft="8px"/>
+				<control type="button" binding="fullScreen" padleft="8px;line-height:1em">Full Screen</control>
+			</control>
+		</menu>
+	</video>
+	<chipset id="chipset" model="VT100"/>
+	<keyboard id="keyboard"/>
+	<panel ref="/devices/pc8080/panel/wide.xml"/>
+	<debugger id="debugger" messages="mem" commands="s 8086"/>
+</machine>
diff --git a/devices/pc8080/machine/vt100/machine.xml b/devices/pc8080/machine/vt100/machine.xml
index 3be3be0ba..383aad6d9 100644
--- a/devices/pc8080/machine/vt100/machine.xml
+++ b/devices/pc8080/machine/vt100/machine.xml
@@ -8,7 +8,7 @@
 	<ram id="ram" addr="0x2000" size="0x0C00"/>
 	<video id="video" screenWidth="1600" screenHeight="960" smoothing="false"
 		   fontROM="/devices/pc8080/rom/vt100/23-018E2.json" fontColor="white" cellWidth="10" cellHeight="10"
-		   bufferAddr="0x2000" bufferRAM="true" bufferFormat="vt100" bufferCols="80" bufferRows="24" pos="left" padding="8px">
+		   bufferAddr="0x2000" bufferRAM="true" bufferFormat="vt100" bufferCols="80" bufferRows="24" padding="8px">
 		<menu>
 			<title>VT100 Screen</title>
 			<control type="container" pos="right">
@@ -25,6 +25,4 @@
 	</video>
 	<chipset id="chipset" model="VT100"/>
 	<keyboard id="keyboard"/>
-	<panel ref="/devices/pc8080/panel/wide.xml"/>
-	<debugger id="debugger" messages="chipset|mem" commands="s 8086"/>
 </machine>
diff --git a/versions/pc8080/1.23.3/pc8080-dbg.js b/versions/pc8080/1.23.3/pc8080-dbg.js
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+function Ed(a){y.call(this,"ROM",a,Ed);this.u=null;this.H=a.addr;this.C=a.size;this.I=a.writable;this.w=a.alias;this.D=a.file;this.J=ba(this.D);if(this.D){a=this.D;var b=da(this.J);"json"!=b&&"hex"!=b&&(a=qa()+"/api/v1/dump?file="+this.D+"&format=bytes&decimal=true");var c=this;oa(a,null,!0,function(a,b,f){Fd(c,a,b,f)})}}Za(Ed);var Gd=[0,5];Ed.prototype.Na=function(a,b,c,d){this.A=b;this.b=c;this.G=d;Hd(this)};
+Ed.prototype.Ca=function(){if(this.Ma){if(this.G){var a=this.G,b=this.id,c=this.H,d=this.C,e=this.Ma,f=[],h;for(h in e){var g=e[h];"number"==typeof g&&(e[h]=g={o:g});var k=g.o,l=g.a;if(void 0!==k){var n=f,k=[k>>>0,h],p=ka(n,k,a.Ta);0>p&&n.splice(-(p+1),0,k)}l&&(g.a=l.replace(/''/g,'"'))}a.I.push({ee:b,F:c,cd:d,Ma:e,bc:f})}delete this.Ma}return!0};Ed.prototype.Ja=function(){return!0};
+function Fd(a,b,c,d){if(d)a.fa("Unable to load system ROM (error "+d+": "+b+")");else{ab(a.Tb,b,c);if("["==c.charAt(0)||"{"==c.charAt(0))try{var e=eval("("+c+")"),f=e.bytes,h=e.data;if(f)a.u=f;else if(h)for(a.u=Array(4*h.length),d=c=0;c<h.length;c++)a.u[d++]=h[c]&255,a.u[d++]=h[c]>>8&255,a.u[d++]=h[c]>>16&255,a.u[d++]=h[c]>>24&255;else a.u=e;a.Ma=e.symbols;if(!a.u.length){v("Empty ROM: "+b);return}if(1==a.u.length){v(a.u[0]);return}}catch(g){a.fa("ROM data error: "+g.message);return}else for(b=c.replace(/\n/gm,
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+function Hd(a){if(!jb(a))if(!a.D)E(a);else if(a.u&&a.A){a.C||(a.C=a.u.length);if(a.u.length!=a.C)mb(a,"ROM size (0x"+q(a.u.length)+") does not match specified size ("+("0x"+q(a.C))+")");else if(Id(a,a.H)){var b=[];"number"==typeof a.w?b.push(a.w):null!=a.w&&a.w.length&&(b=a.w);for(var c=0;c<b.length;c++){for(var d=a,e=b[c],f=d.A,h=d.C,g=[],k=d.H>>>f.la;0<h&&k<f.V.length;)g.push(f.V[k++]),h-=f.Ba;f=d.A;d=d.C;h=0;for(e>>>=f.la;0<d&&e<f.V.length;){k=g[h++];if(!k)break;f.V[e++]=k;d-=f.Ba}}delete a.u}E(a)}}
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+function Td(a,b,c,d,e){var f=this;this.jc=xa("Gecko/");var h=["","moz","ms","webkit"];y.call(this,"Video",a,Td,262144);this.aa=a.screenWidth;this.U=a.screenHeight;this.ya=a.bufferAddr;this.rd=a.bufferRAM;var g=a.bufferFormat;this.Y=g&&Ud[g.toLowerCase()]||Vd;this.Ta=a.bufferCols;this.ea=a.bufferRows;this.od=this.oa=a.cellWidth||1;this.ha=a.cellHeight||1;this.eb=null;this.Sa=a.bufferBits||1;this.sd=a.bufferLeft||0;if(this.D=a.bufferRotate)this.D=this.D%360,0<this.D&&(this.D-=360),-90!=this.D&&(this.fa("unsupported buffer rotation: "+
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+function $d(a,b,c,d){var e=8>=a.od?8:16,f=8<e?15:0,h=a.eb.length/e,g=!1===d,k={oa:b,ha:c};k.canvas=document.createElement("canvas");k.canvas.width=16*b;k.canvas.height=h/16*c;k.context=k.canvas.getContext("2d");for(var l=k.context.createImageData(b,c),n=0;n<h;n++){for(var p=0,x=p;p<a.ha;p++)for(var w=n*e+(f+p&e-1),w=d&&8==p?255:a.eb[w],t=0;t<c/a.ha;t++){for(var A=0,u=A;A<a.oa;A++)for(var F=w&128>>(7<A?7:A),B=0;B<b/a.oa;B++)g&&(F=!F),ae(a,l,u,x,F?1:0),u++;x++}k.context.putImageData(l,(n&15)*b,(n>>
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+Y.prototype.ia=function(a,b,c,d){this.N=d;this.F=Oa(a,"ChipSet");this.V=this.F.V;switch(this.V){case X.Y:this.b=Z}this.b&&(Za(b,this,this.b.Wa),$a(b,this,this.b.Xa))};Y.prototype.Z=function(a,b){if(!b)if(!a)this.reset();else if(!this.restore(a))return!1;return!0};Y.prototype.fa=function(a){return a?this.save():!0};Z.Ca=[[0]];Y.prototype.reset=function(){this.l={};this.a={};this.b&&!this.restore(this.b.Ca)&&this.I("reset error")};
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 function nc(a,b,c){var d=!0,e;a:{e=b.keyCode;e=lc[e]||e;for(var f in kc)if(kc[f]===e){e=f;break a}e=null}e&&(d=oc(a,e,c),b.preventDefault());return d}
-function oc(a,b,c){if(c)a.l[b]=Date.now(),delete a.a[b];else{var d=a.l[b];if(d&&100>Date.now()-d)return a.a[b]=d,qc(a),!0;delete a.l[b]}if(a.F)switch(b){case "1p":bc(a.F,W.ja.Xb,c);break;case "2p":bc(a.F,W.ja.ac,c);break;case "coin":bc(a.F,W.ja.Mb,c);break;case "left":bc(a.F,W.ja.Zb,c);break;case "right":bc(a.F,W.ja.$b,c);break;case "fire":bc(a.F,W.ja.Yb,c)}return!0}
-function qc(a){for(var b=-1,c=Object.keys(a.a),d=0;d<c.length;d++){var e=c[d],f=100-(Date.now()-a.a[e]);if(0<f){if(0>b||b>f)b=f}else delete a.a[e],oc(a,e,!1)}0<=b&&setTimeout(function(){qc(a)},b)}Y.prototype.f=function(a,b){this.c=b;pc(this)};Z.Va={};Z.Wa={130:Y.prototype.f};ua(function(){for(var a=z(document,"pc8080","keyboard"),b=0;b<a.length;b++){var c=a[b],d=y(c),d=new Y(d);Ia(d,c)}});
-function rc(a,b,c,d,e){var f=this;this.qb=oa("Gecko/");var h=["","moz","ms","webkit"];v.call(this,"Video",a,rc);this.v=a.screenWidth;this.o=a.screenHeight;this.$=a.bufferAddr;this.pc=a.bufferRAM;var g=a.bufferFormat;this.s=g&&sc[g.toLowerCase()]||tc;this.Ma=a.bufferCols;this.G=a.bufferRows;this.hc=this.O=a.cellWidth||1;this.M=a.cellHeight||1;this.Za=null;this.ra=a.bufferBits||1;this.qc=a.bufferLeft||0;if(this.c=a.bufferRotate)this.c=this.c%360,0<this.c&&(this.c-=360),-90!=this.c&&(this.I("unsupported buffer rotation: "+
-this.c),this.c=0);this.zb=a.interruptRate;this.rc=a.refreshRate||60;this.m=b;this.f=c;this.ba=(this.tc=d)||b||null;this.ic=this.v;this.oc=this.o;this.kb=this.v/this.Ma|0;this.pb=this.o/this.G|0;1<this.M&&this.G++;b=a.smoothing;(c=za.smoothing)&&(b="true"==c);if(null!=b)for(c=0;c<h.length;c++)if(d=(d=h[c])?d+"ImageSmoothingEnabled":"imageSmoothingEnabled",void 0!==this.f[d]){this.f[d]=b;break}if(this.g=a.screenRotate)this.g=this.g%360,0<this.g&&(this.g-=360),-90!=this.g?(this.I("unsupported screen rotation: "+
+function oc(a,b,c){if(c)a.l[b]=Date.now(),delete a.a[b];else{var d=a.l[b];if(d&&100>Date.now()-d)return a.a[b]=d,qc(a),!0;delete a.l[b]}if(a.F)switch(b){case "1p":bc(a.F,W.ka.Yb,c);break;case "2p":bc(a.F,W.ka.bc,c);break;case "coin":bc(a.F,W.ka.Nb,c);break;case "left":bc(a.F,W.ka.$b,c);break;case "right":bc(a.F,W.ka.ac,c);break;case "fire":bc(a.F,W.ka.Zb,c)}return!0}
+function qc(a){for(var b=-1,c=Object.keys(a.a),d=0;d<c.length;d++){var e=c[d],f=100-(Date.now()-a.a[e]);if(0<f){if(0>b||b>f)b=f}else delete a.a[e],oc(a,e,!1)}0<=b&&setTimeout(function(){qc(a)},b)}Y.prototype.f=function(a,b){this.c=b;pc(this)};Z.Wa={};Z.Xa={130:Y.prototype.f};ua(function(){for(var a=z(document,"pc8080","keyboard"),b=0;b<a.length;b++){var c=a[b],d=y(c),d=new Y(d);Ia(d,c)}});
+function rc(a,b,c,d,e){var f=this;this.rb=oa("Gecko/");var h=["","moz","ms","webkit"];u.call(this,"Video",a,rc);this.v=a.screenWidth;this.o=a.screenHeight;this.$=a.bufferAddr;this.qc=a.bufferRAM;var g=a.bufferFormat;this.s=g&&sc[g.toLowerCase()]||tc;this.Ma=a.bufferCols;this.G=a.bufferRows;this.ic=this.O=a.cellWidth||1;this.M=a.cellHeight||1;this.$a=null;this.ra=a.bufferBits||1;this.rc=a.bufferLeft||0;if(this.c=a.bufferRotate)this.c=this.c%360,0<this.c&&(this.c-=360),-90!=this.c&&(this.I("unsupported buffer rotation: "+
+this.c),this.c=0);this.Ab=a.interruptRate;this.sc=a.refreshRate||60;this.m=b;this.f=c;this.ba=(this.uc=d)||b||null;this.jc=this.v;this.pc=this.o;this.lb=this.v/this.Ma|0;this.qb=this.o/this.G|0;1<this.M&&this.G++;b=a.smoothing;(c=za.smoothing)&&(b="true"==c);if(null!=b)for(c=0;c<h.length;c++)if(d=(d=h[c])?d+"ImageSmoothingEnabled":"imageSmoothingEnabled",void 0!==this.f[d]){this.f[d]=b;break}if(this.g=a.screenRotate)this.g=this.g%360,0<this.g&&(this.g-=360),-90!=this.g?(this.I("unsupported screen rotation: "+
 this.g),this.g=0):(this.f.translate(0,this.o),this.f.rotate(this.g*Math.PI/180),this.f.scale(this.o/this.v,this.v/this.o));if(this.b=e)if(this.b.ta=e.requestFullscreen||e.msRequestFullscreen||e.mozRequestFullScreen||e.webkitRequestFullscreen,this.b.ta){for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenchange","on"+d in document){document.addEventListener(d,function(){uc(f,document.fullscreenElement||document.msFullscreenElement||document.mozFullScreenElement||document.webkitFullscreenElement?!0:!1)},!1);
-break}for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenerror","on"+d in document){document.addEventListener(d,function(){uc(f,null)},!1);break}}if(this.J=a.fontROM)"json"!=ca(this.J)&&(this.J=ia()+"/api/v1/dump?file="+this.J+"&format=bytes"),r(this.J,null,!0,function(a,b,c){vc(f,a,b,c)});this.eb={}}x(rc);var tc=0,sc={vt100:2};
-rc.prototype.ha=function(a,b,c,d){this.u=a;this.l=b;this.a=c;this.N=d;this.F=Oa(a,"ChipSet");!this.s&&this.F&&this.F.V==W.Y&&(this.s=1);this.i=this.Ma*this.O;this.C=this.G*this.M;b=this.i;c=this.C;this.c&&(b=this.C,c=this.i);this.Na=(this.i*this.ra>>3)*this.C;if(this.pc||Sa(this.l,this.$,this.Na,3))1<this.O?wc(this,this.Ma*this.G):(this.rb=this.f.createImageData(b,c),this.ub=16/this.ra|0,wc(this,this.Na>>1)),this.j=document.createElement("canvas"),this.j.width=b,this.j.height=c,this.$a=this.j.getContext("2d"),
-this.L={},this.fa=1<<this.ra,this.S=Array(this.fa+2),this.S[0]=[0,0,0,255],this.S[1]=[255,255,255,255],1==this.s&&(this.S[this.fa+0]=[255,255,0,255],this.S[this.fa+1]=[0,255,0,255]),2==this.s&&(this.Ab=60,this.ab=!1,this.W=Array(this.Ma));if(this.D=Oa(a,"Keyboard")){for(var e in this.eb)this.D.R("led",e,this.eb[e]);this.m&&this.D.R(this.tc?"textarea":"canvas","kbd",this.ba)}this.J||B(this)};
-function vc(a,b,c,d){if(d)a.I("Unable to load font ROM (error "+d+": "+b+")");else{Fa(a.cb,b,c);try{var e=eval("("+c+")"),f=e.bytes||e;if(!f||!f.length){t("Empty font ROM: "+b);return}if(1==f.length){t(f[0]);return}if(2048==f.length)xc(a,f);else{a.I("Unrecognized font data length ("+f.length+")");return}}catch(h){a.I("Font ROM data error: "+h.message);return}(a.f||a.N)&&B(a)}}
-function xc(a,b){a.Za=b;a.L[96]=[yc(a,a.O,a.M),yc(a,a.O,a.M,a.ab)];a.L[64]=[yc(a,2*a.O,a.M),yc(a,2*a.O,a.M,a.ab)];a.L[32]=a.L[0]=[yc(a,2*a.O,2*a.M),yc(a,2*a.O,2*a.M,a.ab)]}
-function yc(a,b,c,d){var e=8>=a.hc?8:16,f=8<e?15:0,h=a.Za.length/e,g=!1===d,k={O:b,M:c};k.canvas=document.createElement("canvas");k.canvas.width=16*b;k.canvas.height=h/16*c;k.context=k.canvas.getContext("2d");for(var l=k.context.createImageData(b,c),p=0;p<h;p++){for(var n=0,H=n;n<a.M;n++)for(var J=p*e+(f+n&e-1),J=d&&8==n?255:a.Za[J],V=0;V<c/a.M;V++){for(var G=0,u=G;G<a.O;G++)for(var A=J&128>>(7<G?7:G),M=0;M<b/a.O;M++)g&&(A=!A),zc(a,l,u,H,A?1:0),u++;H++}k.context.putImageData(l,(p&15)*b,(p>>4)*c)}return k}
-rc.prototype.Z=function(){if(2==this.s){for(var a={0:[32,"SET-UP A"],2:[64,'TO EXIT PRESS "SET-UP"'],22:[96,"        T       T       T       T       T       T       T       T       T"],23:[96,"1234567890","1234567890","1234567890","1234567890","1234567890","1234567890","1234567890","1234567890"],24:[]},b=this.$,c=-1,d=-1,e,f=-(60==this.Ab?2:5);f<this.G;f++){var h=a[f];if(0<=c){var g=!1,c=b+2;h?h.length?d=h[0]:(c=b-1,g=!0):32==d&&(h=a[f-1],d=0);e=d&96|c>>8&15|16;Xa(this.l,b++,e);Xa(this.l,b++,c&255);
-if(g)break}if(h)for(c=0,e=1;e<h.length;e++){for(var g=h[e],k=0;k<g.length;k++)Xa(this.l,b++,g.charCodeAt(k)|c);c^=128}Xa(this.l,b++,127);c=b}Ac(this)}return!0};rc.prototype.R=function(a,b,c){var d=this;if("led"==a||"rled"==a)return this.eb[b]=c,!0;switch(b){case "fullScreen":return this.w[b]=c,this.b&&this.b.ta?c.onclick=function(){d.ta()}:c.parentNode.removeChild(c),!0}return!1};
-rc.prototype.ta=function(){var a=!1;if(this.b){if(this.b.ta){a="100%";if(screen&&screen.width&&screen.height){var b=screen.width/screen.height,c=this.v/this.o;b>c&&(a=Math.round(c/b*100)+"%")}this.qb?(this.m.style.width=a,this.m.style.width=a,this.m.style.display="block",this.m.style.margin="auto"):(this.b.style.width=a,this.b.style.height="auto");this.b.style.backgroundColor="black";this.b.ta();a=!0}this.ba&&this.ba.focus()}return a};
-function uc(a,b){!b&&a.b&&(a.qb?a.m.style.width=a.m.style.height="":a.b.style.width=a.b.style.height="")}function wc(a,b){a.sb=b;a.aa=!1;if(void 0===a.K||a.K.length!=a.sb)a.K=Array(a.sb)}function zc(a,b,c,d,e){d=a.c?(b.height-c-1)*b.width+d:c+d*b.width;e&&1==a.s&&(208<=c&&236>c?e=a.fa+0:28<=c&&72>c&&(e=a.fa+1));a=a.S[e];d*=a.length;b.data[d]=a[0];b.data[d+1]=a[1];b.data[d+2]=a[2];b.data[d+3]=a[3]}
-function Ac(a){for(var b=a.$,c=-1,d=0,e=60==a.Ab?2:5,f=0,h=0;d<a.G;){for(var g=0,k=b,l=c;;){var p=Va(a.l,k++);if(127==(p&127)){var n=Va(a.l,k++),c=n&96,b=(n&15)<<8|Va(a.l,k),b=b+(n&16?8192:16384);break}if(g<a.W.length)a.W[g++]=p;else break}if(e)e--;else{for(;g<a.W.length;)a.W[g++]=0;if(0<=l)for(k=0;k<g;k++){p=a.W[k];if(!a.aa||p!==a.K[f]){var n=a,H=a.$a,J=p&127;if(p=n.L[l][p&128?1:0]){var V=(J&15)*p.O,J=(J>>4)*p.M,G=void 0,u=void 0,A=void 0,M=void 0,pa=p.O,Db=p.M;H?(G=k*n.O,u=d*n.M,A=n.O,M=n.M):(G=
-k*n.kb,u=d*n.pb,A=n.kb,M=n.pb);p.O>n.O&&(G*=2,A*=2);p.M>n.M&&(0==l&&(J+=n.M),Db=n.M);H?H.drawImage(p.canvas,V,J,pa,Db,G,u,A,M):(G+=0,u+=0,n.f.drawImage(p.canvas,V,J,pa,Db,G,u,A,M))}h++}f++}d++}}a.aa=!0;h&&a.$a&&a.f.drawImage(a.j,0,0,a.i,a.C-a.M,0,0,a.ic,a.oc)}
+break}for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenerror","on"+d in document){document.addEventListener(d,function(){uc(f,null)},!1);break}}if(this.J=a.fontROM)"json"!=ca(this.J)&&(this.J=ia()+"/api/v1/dump?file="+this.J+"&format=bytes"),r(this.J,null,!0,function(a,b,c){vc(f,a,b,c)});this.fb={}}x(rc);var tc=0,sc={vt100:2};
+rc.prototype.ia=function(a,b,c,d){this.u=a;this.l=b;this.a=c;this.N=d;this.F=Oa(a,"ChipSet");!this.s&&this.F&&this.F.V==W.Y&&(this.s=1);this.i=this.Ma*this.O;this.C=this.G*this.M;b=this.i;c=this.C;this.c&&(b=this.C,c=this.i);this.Na=(this.i*this.ra>>3)*this.C;if(this.qc||Sa(this.l,this.$,this.Na,3))1<this.O?wc(this,this.Ma*this.G):(this.sb=this.f.createImageData(b,c),this.vb=16/this.ra|0,wc(this,this.Na>>1)),this.j=document.createElement("canvas"),this.j.width=b,this.j.height=c,this.ab=this.j.getContext("2d"),
+this.L={},this.ga=1<<this.ra,this.S=Array(this.ga+2),this.S[0]=[0,0,0,255],this.S[1]=[255,255,255,255],1==this.s&&(this.S[this.ga+0]=[255,255,0,255],this.S[this.ga+1]=[0,255,0,255]),2==this.s&&(this.Bb=60,this.bb=!1,this.W=Array(this.Ma));if(this.D=Oa(a,"Keyboard")){for(var e in this.fb)this.D.R("led",e,this.fb[e]);this.m&&this.D.R(this.uc?"textarea":"canvas","kbd",this.ba)}this.J||B(this)};
+function vc(a,b,c,d){if(d)a.I("Unable to load font ROM (error "+d+": "+b+")");else{Fa(a.eb,b,c);try{var e=eval("("+c+")"),f=e.bytes||e;if(!f||!f.length){t("Empty font ROM: "+b);return}if(1==f.length){t(f[0]);return}if(2048==f.length)xc(a,f);else{a.I("Unrecognized font data length ("+f.length+")");return}}catch(h){a.I("Font ROM data error: "+h.message);return}(a.f||a.N)&&B(a)}}
+function xc(a,b){a.$a=b;a.L[96]=[yc(a,a.O,a.M),yc(a,a.O,a.M,a.bb)];a.L[64]=[yc(a,2*a.O,a.M),yc(a,2*a.O,a.M,a.bb)];a.L[32]=a.L[0]=[yc(a,2*a.O,2*a.M),yc(a,2*a.O,2*a.M,a.bb)]}
+function yc(a,b,c,d){var e=8>=a.ic?8:16,f=8<e?15:0,h=a.$a.length/e,g=!1===d,k={O:b,M:c};k.canvas=document.createElement("canvas");k.canvas.width=16*b;k.canvas.height=h/16*c;k.context=k.canvas.getContext("2d");for(var l=k.context.createImageData(b,c),p=0;p<h;p++){for(var n=0,H=n;n<a.M;n++)for(var J=p*e+(f+n&e-1),J=d&&8==n?255:a.$a[J],V=0;V<c/a.M;V++){for(var G=0,v=G;G<a.O;G++)for(var A=J&128>>(7<G?7:G),M=0;M<b/a.O;M++)g&&(A=!A),zc(a,l,v,H,A?1:0),v++;H++}k.context.putImageData(l,(p&15)*b,(p>>4)*c)}return k}
+rc.prototype.Z=function(){if(2==this.s){for(var a={0:[32,"SET-UP A"],2:[64,'TO EXIT PRESS "SET-UP"'],22:[96,"        T       T       T       T       T       T       T       T       T"],23:[96,"1234567890","1234567890","1234567890","1234567890","1234567890","1234567890","1234567890","1234567890"],24:[]},b=this.$,c=-1,d=-1,e,f=-(60==this.Bb?2:5);f<this.G;f++){var h=a[f];if(0<=c){var g=!1,c=b+2;h?h.length?d=h[0]:(c=b-1,g=!0):32==d&&(h=a[f-1],d=0);e=d&96|c>>8&15|16;Xa(this.l,b++,e);Xa(this.l,b++,c&255);
+if(g)break}if(h)for(c=0,e=1;e<h.length;e++){for(var g=h[e],k=0;k<g.length;k++)Xa(this.l,b++,g.charCodeAt(k)|c);c^=128}Xa(this.l,b++,127);c=b}Ac(this)}return!0};rc.prototype.R=function(a,b,c){var d=this;if("led"==a||"rled"==a)return this.fb[b]=c,!0;switch(b){case "fullScreen":return this.w[b]=c,this.b&&this.b.ta?c.onclick=function(){d.ta()}:c.parentNode.removeChild(c),!0}return!1};
+rc.prototype.ta=function(){var a=!1;if(this.b){if(this.b.ta){a="100%";if(screen&&screen.width&&screen.height){var b=screen.width/screen.height,c=this.v/this.o;b>c&&(a=Math.round(c/b*100)+"%")}this.rb?(this.m.style.width=a,this.m.style.width=a,this.m.style.display="block",this.m.style.margin="auto"):(this.b.style.width=a,this.b.style.height="auto");this.b.style.backgroundColor="black";this.b.ta();a=!0}this.ba&&this.ba.focus()}return a};
+function uc(a,b){!b&&a.b&&(a.rb?a.m.style.width=a.m.style.height="":a.b.style.width=a.b.style.height="")}function wc(a,b){a.tb=b;a.aa=!1;if(void 0===a.K||a.K.length!=a.tb)a.K=Array(a.tb)}function zc(a,b,c,d,e){d=a.c?(b.height-c-1)*b.width+d:c+d*b.width;e&&1==a.s&&(208<=c&&236>c?e=a.ga+0:28<=c&&72>c&&(e=a.ga+1));a=a.S[e];d*=a.length;b.data[d]=a[0];b.data[d+1]=a[1];b.data[d+2]=a[2];b.data[d+3]=a[3]}
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