Misc/abrash-black-book
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Replace invalid characters with HTML entities

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— with —
’ with ’
+ with +
× with x
ç with ç
“ with “
” with ”
‘ with ‘
• with •
– with -
µ with µ
† with †
Fix C++
θ with θ
Yen symbol instead of times
Fix broken apos
Bullet again
E-circumflex
This commit is contained in:
James Gregory 2013-12-30 12:50:32 +11:00
commit 500e7f5654
353 changed files with 5091 additions and 5091 deletions
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52
47-05.html
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@ -80,34 +80,34 @@ STACK_FRAME_SIZE equ 8
.code
public _FillRectangleX
_FillRectangleX proc near
push bp ;preserve caller’s stack frame
push bp ;preserve caller’s stack frame
mov bp,sp ;point to local stack frame
sub sp,STACK_FRAME_SIZE ;allocate space for local vars
push si ;preserve caller’s register variables
push si ;preserve caller’s register variables
push di
cld
mov ax,SCREEN_WIDTH
mul [bp+StartY] ;offset in page of top rectangle scan line
mov di,[bp+StartX]
mul [bp+StartY] ;offset in page of top rectangle scan line
mov di,[bp+StartX]
shr di,1
shr di,1 ;X/4 = offset of first rectangle pixel in scan
; line
add di,ax ;offset of first rectangle pixel in page
add di,[bp+PageBase] ;offset of first rectangle pixel in
add di,[bp+PageBase] ;offset of first rectangle pixel in
; display memory
mov ax,SCREEN_SEG
mov es,ax ;point ES:DI to the first rectangle pixel’s
mov [bp+StartOffset],di ; address
mov es,ax ;point ES:DI to the first rectangle pixel’s
mov [bp+StartOffset],di ; address
mov dx,SC_INDEX ;set the Sequence Controller Index to
mov al,MAP_MASK ; point to the Map Mask register
out dx,al
mov bx,[bp+EndY]
sub bx,[bp+StartY] ;BX = height of rectangle
mov bx,[bp+EndY]
sub bx,[bp+StartY] ;BX = height of rectangle
jle FillDone ;skip if 0 or negative height
mov [bp+Height],bx
mov dx,[bp+EndX]
mov cx,[bp+StartX]
mov [bp+Height],bx
mov dx,[bp+EndX]
mov cx,[bp+StartX]
cmp dx,cx
jle FillDone ;skip if 0 or negative width
dec dx
@ -116,17 +116,17 @@ _FillRectangleX proc near
shr dx,1
shr dx,1
inc dx ;# of addresses across rectangle to fill
mov [bp+Width],dx
mov word ptr [bp+PlaneInfo],0001h
mov [bp+Width],dx
mov word ptr [bp+PlaneInfo],0001h
;lower byte = plane mask for plane 0,
; upper byte = plane # for plane 0
FillPlanesLoop:
mov ax,word ptr [bp+PlaneInfo]
mov dx,SC_INDEX+1 ;point DX to the SC Data register
mov ax,word ptr [bp+PlaneInfo]
mov dx,SC_INDEX+1 ;point DX to the SC Data register
out dx,al ;set the plane for this pixel
mov di,[bp+StartOffset] ;point ES:DI to rectangle start
mov dx,[bp+Width]
mov cl,byte ptr [bp+StartX]
mov di,[bp+StartOffset] ;point ES:DI to rectangle start
mov dx,[bp+Width]
mov cl,byte ptr [bp+StartX]
and cl,011b ;plane # of first pixel in initial byte
cmp ah,cl ;do we draw this plane in the initial byte?
jae InitAddrSet ;yes
@ -134,7 +134,7 @@ FillPlanesLoop:
jz FillLoopBottom ;skip this plane if no pixels in it
inc di
InitAddrSet:
mov cl,byte ptr [bp+EndX]
mov cl,byte ptr [bp+EndX]
dec cl
and cl,011b ;plane # of last pixel in final byte
cmp ah,cl ;do we draw this plane in the final byte?
@ -145,8 +145,8 @@ WidthSet:
mov si,SCREEN_WIDTH
sub si,dx ;distance from end of one scan line to start
; of next
mov bx,[bp+Height] ;# of lines to fill
mov al,byte ptr [bp+Color] ;color with which to fill
mov bx,[bp+Height] ;# of lines to fill
mov al,byte ptr [bp+Color] ;color with which to fill
FillRowsLoop:
mov cx,dx ;# of bytes across scan line
rep stosb ;fill the scan line in this plane
@ -155,17 +155,17 @@ FillRowsLoop:
dec bx ;count down scan lines
jnz FillRowsLoop
FillLoopBottom:
mov ax,word ptr [bp+PlaneInfo]
mov ax,word ptr [bp+PlaneInfo]
shl al,1 ;set the plane bit to the next plane
inc ah ;increment the plane #
mov word ptr [bp+PlaneInfo],ax
mov word ptr [bp+PlaneInfo],ax
cmp ah,4 ;have we done all planes?
jnz FillPlanesLoop ;continue if any more planes
FillDone:
pop di ;restore caller’s register variables
pop di ;restore caller’s register variables
pop si
mov sp,bp ;discard storage for local variables
pop bp ;restore caller’s stack frame
pop bp ;restore caller’s stack frame
ret
_FillRectangleX endp
end