--- /dev/null
+;====================================================
+;
+; TED5 ASM Routines
+;
+;====================================================
+ IDEAL
+ P386N
+ MODEL medium,C
+
+extrn XMSdriver:DWORD
+extrn videomode:WORD,xmshandle:WORD,XMSlookup:WORD
+extrn tilenum:WORD,lasticon:WORD,firsticon:WORD
+extrn CGAlookup:WORD,EGA1lookup:WORD,EGA2lookup:WORD,VGAlookup:WORD
+
+ DATASEG
+
+SCindex = 3c4h
+SCmapmask = 2
+GCindex = 3CEh
+GCreadmap = 4
+GCmode = 5
+
+CombTable dw CombineCGA,CombineEGA,CombineEGA,CombineVGA
+DrawTable dw DrawTCGA,DrawTEGA1,DrawTEGA2,DrawTVGA
+OverTable dw OverlayCGA,OverlayEGA,OverlayEGA,OverlayVGA
+
+cgacolors db 55h,0aah
+egacolors dw 0,0ffffh
+
+oldh db 0
+oldy dw 0
+horzadd dw 0
+wsize dw 1,2,4
+hsize dw 8,16,32
+twidth dw 0
+theight dw 0
+bmlen dw 0
+masklen dw 0
+
+csize dw 32,64,256
+esize dw 32,128,512
+vsize dw 64,256,1024
+
+cmsize dw 64,128,512
+emsize dw 40,160,640
+vmsize dw 128,512,2048
+
+ PUBLIC tdata
+tdata db 2048 dup(?)
+tdata1 db 2048 dup(?)
+
+;
+; XMS move structure
+;
+blen dw 0,0
+shandle dw 0
+soff dd 0
+dhandle dw 0
+doff dd tdata1
+
+
+Csparse dw csp8,csp16,csp32
+Esparse dw esp8,esp16,esp32
+Vsparse dw vsp8,vsp16,vsp32
+
+csp8 db 0ffh,0ffh
+ REPT 7
+ db 0c0h,0
+ ENDM
+csp16 db 4 dup (0ffh)
+ REPT 15
+ db 0c0h
+ db 3 dup (0)
+ ENDM
+csp32 db 8 dup (0ffh)
+ REPT 31
+ db 0c0h
+ db 7 dup(0)
+ ENDM
+
+LABEL esp8 BYTE
+ REPT 4
+ db 0ffh
+ db 7 dup (80h)
+ ENDM
+LABEL esp16 BYTE
+ REPT 4
+ db 0ffh,0ffh
+ REPT 15
+ db 80h,0
+ ENDM
+ ENDM
+LABEL esp32 BYTE
+ REPT 4
+ db 4 dup (0ffh)
+ REPT 31
+ db 80h,0,0,0
+ ENDM
+ ENDM
+
+vsp8 db 8 dup(0ffh)
+ REPT 7
+ db 0ffh,7 dup(0)
+ ENDM
+vsp16 db 16 dup(0ffh)
+ REPT 15
+ db 0ffh,15 dup(0)
+ ENDM
+vsp32 db 32 dup(0ffh)
+ REPT 31
+ db 0ffh,31 dup(0)
+ ENDM
+
+
+ CODESEG
+;====================================================
+;
+; Combine tiles together (background,foreground,icons)
+;
+;====================================================
+PUBLIC CombineTiles
+PROC CombineTiles
+ ARG tileb:WORD,tilef:WORD,tilei:WORD,tsize:WORD
+
+ push si
+ push di
+
+ cld
+ mov bx,[tsize]
+ shl bx,1
+ mov dx,[hsize+bx-2]
+ mov [theight],dx
+ mov cx,[wsize+bx-2]
+ mov [twidth],cx
+ mov ax,[xmshandle]
+ mov [shandle],ax ;set XMS handle
+
+ mov si,[videomode]
+ shl si,1
+ mov ax,[CombTable+si]
+ jmp ax
+;
+; Combine CGA tiles
+;
+LABEL CombineCGA PROC
+
+ shl [twidth],1
+ mov cx,[cmsize+bx-2]
+ mov [bmlen],cx
+ mov ax,[csize+bx-2] ;get length of block to move
+ mov [blen],ax
+ sub cx,ax
+ mov [masklen],cx
+
+;
+; Handle the background tiles first!
+;
+ mov ax,[tileb]
+ cmp ax,8000h ;solid color?
+ jb @@c1
+ neg ax
+
+ mov di,ds
+ mov es,di
+ mov di,OFFSET tdata
+ mov bx,ax
+ and bx,1
+ mov al,[cgacolors+bx]
+
+ mov cx,[blen]
+ rep stosb
+ jmp SHORT @@c2
+
+@@c1:
+ shl ax,2
+ mov bx,ax
+ mov es,[XMSlookup] ;(LONG SEG *)
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+ cmp ax,-1 ;SPARSE TILE?
+ je @@c1a
+
+ mov ax,OFFSET tdata ;(quickie modification since "doff"
+ mov [WORD doff],ax ; should always point to "tdata1")
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+ mov ax,OFFSET tdata1
+ mov [WORD doff],ax ;ahhh....back to normal
+
+ jmp @@c2
+;
+; Copy sparse tile to tdata
+;
+@@c1a:
+ mov bx,[tsize]
+ shl bx,1
+ mov si,[Csparse+bx-2]
+ mov di,OFFSET tdata
+ mov cx,[blen]
+ shr cx,1 ;for WORD copy
+ mov ax,ds
+ mov es,ax
+ rep movsw
+
+;
+; Handle foreground tiles
+;
+@@c2:
+ mov bx,[tilef]
+ cmp bx,0
+ je @@c3 ;any masked tile?
+
+ shl bx,2
+ mov es,[XMSlookup]
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+ cmp ax,-1 ;SPARSE MASKED TILE?
+ je @@c3
+
+ mov ax,[bmlen]
+ mov [blen],ax ;set masked tile length for XMS copy
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+;
+; now we have the masked tile in "tdata1".
+; time to mask it onto "tdata"
+;
+ mov si,OFFSET tdata1
+ add si,[masklen] ;SI = masked tile's tiledata
+ mov di,OFFSET tdata ;DI = tile in "tdata"
+
+ mov dx,[theight]
+ mov bx,OFFSET tdata1 ;BX = mask
+@@c2a:
+ mov cx,[twidth]
+@@c2b:
+ mov al,[bx] ;get mask byte
+ and [di],al ;and tdata with it
+ lodsb ;get tilem byte
+ or [di],al ;OR it onto tdata
+ inc di
+ inc bx
+ loop @@c2b
+ dec dx
+ jnz @@c2a
+;
+; Handle icons (foreground tiles)
+;
+@@c3:
+ mov bx,[tilei]
+ cmp bx,[lasticon]
+ ja @@cexit ;any icons?
+ cmp bx,[firsticon]
+ jbe @@cexit
+
+ shl bx,2
+ mov es,[XMSlookup]
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+
+ mov ax,[bmlen]
+ mov [blen],ax ;set masked tile length for XMS copy
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+;
+; now we have the masked tile in "tdata1".
+; time to mask it onto "tdata"
+;
+ mov si,OFFSET tdata1
+ add si,[masklen] ;SI = masked tile's tiledata
+ mov di,OFFSET tdata ;DI = tile in "tdata"
+
+ mov dx,[theight]
+ mov bx,OFFSET tdata1 ;BX = mask
+@@c3a:
+ mov cx,[twidth]
+@@c3b:
+ mov al,[bx] ;get mask byte
+ and [di],al ;and tdata with it
+ lodsb ;get tilem byte
+ or [di],al ;OR it onto tdata
+ inc di
+ inc bx
+ loop @@c3b
+ dec dx
+ jnz @@c3a
+@@cexit:
+ pop di
+ pop si
+ ret
+
+;
+; Combine EGA tiles
+;
+LABEL CombineEGA PROC
+
+ mov cx,[emsize+bx-2]
+ mov [bmlen],cx
+ mov ax,[esize+bx-2] ;get length of block to move
+ mov [blen],ax
+ sub cx,ax
+ mov [masklen],cx
+
+;
+; Handle the background tiles first!
+;
+ mov ax,[tileb]
+ cmp ax,8000h ;solid color?
+ jb @@e1
+ neg ax
+
+ mov di,ds
+ mov es,di
+ mov di,OFFSET tdata
+ mov dx,ax
+
+ mov cx,[blen] ;plane 0
+ shr cx,3
+ mov bx,dx
+ shr dx,1
+ and bx,1
+ shl bx,1
+ mov ax,[egacolors+bx]
+ rep stosw
+
+ mov cx,[blen] ;plane 1
+ shr cx,3
+ mov bx,dx
+ shr dx,1
+ and bx,1
+ shl bx,1
+ mov ax,[egacolors+bx]
+ rep stosw
+
+ mov cx,[blen] ;plane 2
+ shr cx,3
+ mov bx,dx
+ shr dx,1
+ and bx,1
+ shl bx,1
+ mov ax,[egacolors+bx]
+ rep stosw
+
+ mov cx,[blen] ;plane 3
+ shr cx,3
+ mov bx,dx
+ shr dx,1
+ and bx,1
+ shl bx,1
+ mov ax,[egacolors+bx]
+ rep stosw
+ jmp SHORT @@e2
+
+@@e1:
+ shl ax,2
+ mov bx,ax
+ mov es,[XMSlookup] ;(LONG SEG *)
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+ cmp ax,-1 ;SPARSE TILE?
+ je @@e1a
+
+ mov ax,OFFSET tdata ;(quickie modification since "doff"
+ mov [WORD doff],ax ; should always point to "tdata1")
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+ mov ax,OFFSET tdata1
+ mov [WORD doff],ax ;ahhh....back to normal
+
+ jmp @@e2
+;
+; Copy sparse tile to tdata
+;
+@@e1a:
+ mov bx,[tsize]
+ shl bx,1
+ mov si,[Esparse+bx-2]
+ mov di,OFFSET tdata
+ mov cx,[blen]
+ shr cx,1 ;for WORD copy
+ mov ax,ds
+ mov es,ax
+ rep movsw
+
+;
+; Handle foreground tiles
+;
+@@e2:
+ mov bx,[tilef]
+ cmp bx,0
+ je @@e3 ;any masked tile?
+
+ shl bx,2
+ mov es,[XMSlookup]
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+ cmp ax,-1 ;SPARSE MASKED TILE?
+ je @@e3
+
+ mov ax,[bmlen]
+ mov [blen],ax ;set masked tile length for XMS copy
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+;
+; now we have the masked tile in "tdata1".
+; time to mask it onto "tdata"
+;
+ mov si,OFFSET tdata1
+ add si,[masklen] ;SI = masked tile's tiledata
+ mov di,OFFSET tdata ;DI = tile in "tdata"
+ mov ah,4
+@@e2a0:
+ mov dx,[theight]
+ mov bx,OFFSET tdata1 ;BX = mask
+@@e2a:
+ mov cx,[twidth]
+@@e2b:
+ mov al,[bx] ;get mask byte
+ and [di],al ;and tdata with it
+ lodsb ;get tilem byte
+ or [di],al ;OR it onto tdata
+ inc di
+ inc bx
+ loop @@e2b
+ dec dx
+ jnz @@e2a
+ dec ah
+ jnz @@e2a0 ;do all 4 planes!
+;
+; Handle icons (foreground tiles)
+;
+@@e3:
+ mov bx,[tilei]
+ cmp bx,[lasticon]
+ ja @@eexit ;any icons?
+ cmp bx,[firsticon]
+ jbe @@eexit
+
+ shl bx,2
+ mov es,[XMSlookup]
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+
+ mov ax,[bmlen]
+ mov [blen],ax ;set masked tile length for XMS copy
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+;
+; now we have the masked tile in "tdata1".
+; time to mask it onto "tdata"
+;
+ mov si,OFFSET tdata1
+ add si,[masklen] ;SI = masked tile's tiledata
+ mov di,OFFSET tdata ;DI = tile in "tdata"
+ mov ah,4
+@@e3a0:
+ mov dx,[theight]
+ mov bx,OFFSET tdata1 ;BX = mask
+@@e3a:
+ mov cx,[twidth]
+@@e3b:
+ mov al,[bx] ;get mask byte
+ and [di],al ;and tdata with it
+ lodsb ;get tilem byte
+ or [di],al ;OR it onto tdata
+ inc di
+ inc bx
+ loop @@e3b
+ dec dx
+ jnz @@e3a
+ dec ah
+ jnz @@e3a0 ;do all 4 planes!
+@@eexit:
+ pop di
+ pop si
+ ret
+
+;
+; Combine VGA tiles
+;
+LABEL CombineVGA PROC
+
+ shl [twidth],3
+ mov cx,[vmsize+bx-2]
+ mov [bmlen],cx
+ mov ax,[vsize+bx-2] ;get length of block to move
+ mov [blen],ax
+ sub cx,ax
+ mov [masklen],cx
+
+;
+; Handle the background tiles first!
+;
+ mov ax,[tileb]
+ cmp ax,8000h ;solid color?
+ jb @@v1
+ neg ax
+
+ mov di,ds
+ mov es,di
+ mov di,OFFSET tdata
+ shl ax,4
+ mov bx,[blen]
+ shr bx,3
+
+ mov cx,bx
+ rep stosb
+ inc al
+ mov cx,bx
+ rep stosb
+ inc al
+ mov cx,bx
+ rep stosb
+ inc al
+ mov cx,bx
+ rep stosb
+ inc al
+ mov cx,bx
+ rep stosb
+ inc al
+ mov cx,bx
+ rep stosb
+ inc al
+ mov cx,bx
+ rep stosb
+ inc al
+ mov cx,bx
+ rep stosb
+
+ jmp SHORT @@v2
+
+@@v1:
+ shl ax,2
+ mov bx,ax
+ mov es,[XMSlookup] ;(LONG SEG *)
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+ cmp ax,-1 ;SPARSE TILE?
+ je @@v1a
+
+ mov ax,OFFSET tdata ;(quickie modification since "doff"
+ mov [WORD doff],ax ; should always point to "tdata1")
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+ mov ax,OFFSET tdata1
+ mov [WORD doff],ax ;ahhh....back to normal
+
+ jmp @@v2
+;
+; Copy sparse tile to tdata
+;
+@@v1a:
+ mov bx,[tsize]
+ shl bx,1
+ mov si,[Vsparse+bx-2]
+ mov di,OFFSET tdata
+ mov cx,[blen]
+ shr cx,1 ;for WORD copy
+ mov ax,ds
+ mov es,ax
+ rep movsw
+
+;
+; Handle foreground tiles
+;
+@@v2:
+ mov bx,[tilef]
+ cmp bx,0
+ je @@v3 ;any masked tile?
+
+ shl bx,2
+ mov es,[XMSlookup]
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+ cmp ax,-1 ;SPARSE MASKED TILE?
+ je @@v3
+
+ mov ax,[bmlen]
+ mov [blen],ax ;set masked tile length for XMS copy
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+;
+; now we have the masked tile in "tdata1".
+; time to mask it onto "tdata"
+;
+ mov si,OFFSET tdata1
+ add si,[masklen] ;SI = masked tile's tiledata
+ mov di,OFFSET tdata ;DI = tile in "tdata"
+
+ mov dx,[theight]
+ mov bx,OFFSET tdata1 ;BX = mask
+@@v2a:
+ mov cx,[twidth]
+@@v2b:
+ mov al,[bx] ;get mask byte
+ and [di],al ;and tdata with it
+ lodsb ;get tilem byte
+ or [di],al ;OR it onto tdata
+ inc di
+ inc bx
+ loop @@v2b
+ dec dx
+ jnz @@v2a
+;
+; Handle icons (foreground tiles)
+;
+@@v3:
+ mov bx,[tilei]
+ cmp bx,[lasticon]
+ ja @@vexit ;any icons?
+ cmp bx,[firsticon]
+ jbe @@vexit
+
+ shl bx,2
+ mov es,[XMSlookup]
+ mov ax,[es:bx]
+ mov [WORD PTR soff],ax
+ mov ax,[es:bx+2]
+ mov [WORD PTR soff+2],ax
+
+ mov ax,[bmlen]
+ mov [blen],ax ;set masked tile length for XMS copy
+ mov si,OFFSET blen
+ mov ah,11
+ call [DWORD XMSdriver] ;move tile into tdata1
+;
+; now we have the masked tile in "tdata1".
+; time to mask it onto "tdata"
+;
+ mov si,OFFSET tdata1
+ add si,[masklen] ;SI = masked tile's tiledata
+ mov di,OFFSET tdata ;DI = tile in "tdata"
+
+ mov dx,[theight]
+ mov bx,OFFSET tdata1 ;BX = mask
+@@v3a:
+ mov cx,[twidth]
+@@v3b:
+ mov al,[bx] ;get mask byte
+ and [di],al ;and tdata with it
+ lodsb ;get tilem byte
+ or [di],al ;OR it onto tdata
+ inc di
+ inc bx
+ loop @@v3b
+ dec dx
+ jnz @@v3a
+@@vexit:
+ pop di
+ pop si
+ ret
+ENDP
+
+
+;====================================================
+;
+; Draw a tile in any of the video modes
+; NOTE: ONLY WORKS WITH TSIZE=2!
+;
+;====================================================
+PUBLIC DrawTile
+PROC DrawTile
+ ARG x:WORD,y:WORD,tsize:WORD
+
+ push si
+ push di
+
+ mov bx,[tsize]
+ shl bx,1
+ mov ah,[BYTE PTR hsize+bx-2]
+ mov [oldh],ah
+ mov cx,[wsize+bx-2]
+
+ mov bx,[videomode]
+ shl bx,1
+ mov dx,[DrawTable+bx]
+
+ mov bx,[y]
+ shl bx,1
+ jmp dx
+
+label DrawTCGA proc
+
+ mov ax,0b800h
+ mov es,ax
+ mov si,OFFSET tdata
+ mov di,[x]
+ shl di,1
+ add di,[CGAlookup+bx]
+ mov bx,cx
+ shl bx,1
+ mov ah,[oldh]
+@@c1:
+ mov cx,bx
+ rep movsb
+ sub di,bx
+ xor di,2000h
+ mov cx,bx
+ rep movsb
+ sub di,bx
+ xor di,2000h
+ add di,80
+
+ sub ah,2
+ jnz @@c1
+
+ pop di
+ pop si
+ ret
+;
+; EGA1/2/3 TILE DRAW ROUTINES
+;
+label DrawTEGA1 proc
+ mov [horzadd],38
+ mov di,[EGA1lookup+bx]
+ jmp SHORT DoDrawEGAT
+label DrawTEGA2 proc
+ mov [horzadd],78
+ mov di,[EGA2lookup+bx]
+ jmp SHORT DoDrawEGAT
+label DoDrawEGAT proc
+ add di,[x]
+ mov [oldy],di
+ mov si,OFFSET tdata
+ mov bx,0a000h
+ mov es,bx
+ mov bx,cx
+;
+; AH : height
+; BX : width
+; ES:DI : dest
+; DS:SI : source
+;
+ cld
+ mov dx,GCindex
+ mov al,GCmode
+ out dx,al
+ inc dx
+ mov al,0
+ out dx,al
+;
+; Plane 0
+;
+ mov dx,SCindex
+ mov al,SCmapmask
+ out dx,al
+ inc dx
+ mov al,1
+ out dx,al
+
+ mov dx,[horzadd]
+@@1:
+ mov cx,bx
+ rep movsb
+ add di,dx
+ dec ah
+ jne @@1
+;
+; Plane 1
+;
+ mov dx,SCindex
+ mov al,SCmapmask
+ out dx,al
+ inc dx
+ mov al,2
+ out dx,al
+
+ mov dx,[horzadd]
+ mov di,[oldy]
+ mov ah,[oldh]
+@@2:
+ mov cx,bx
+ rep movsb
+ add di,dx
+ dec ah
+ jne @@2
+;
+; Plane 2
+;
+ mov dx,SCindex
+ mov al,SCmapmask
+ out dx,al
+ inc dx
+ mov al,4
+ out dx,al
+
+ mov dx,[horzadd]
+ mov di,[oldy]
+ mov ah,[oldh]
+@@3:
+ mov cx,bx
+ rep movsb
+ add di,dx
+ dec ah
+ jne @@3
+;
+; Plane 3
+;
+ mov dx,SCindex
+ mov al,SCmapmask
+ out dx,al
+ inc dx
+ mov al,8
+ out dx,al
+
+ mov dx,[horzadd]
+ mov di,[oldy]
+ mov ah,[oldh]
+@@4:
+ mov cx,bx
+ rep movsb
+ add di,dx
+ dec ah
+ jne @@4
+
+ pop di
+ pop si
+ ret
+
+label DrawTVGA proc
+
+ mov ax,0a000h
+ mov es,ax
+ mov si,OFFSET tdata
+ mov di,[x]
+ shl di,3
+ add di,[VGAlookup+bx]
+ mov bx,cx
+ shl bx,2
+ mov ah,[oldh]
+@@v1:
+ mov cx,bx
+ rep movsw
+ add di,304
+
+ dec ah
+ jnz @@v1
+
+ pop di
+ pop si
+ ret
+ENDP
+
+;////////////////////////////////////////////////////////////////////
+;
+; TED5 screen scroll routines!
+;
+;////////////////////////////////////////////////////////////////////
+PROC CopyCGA
+PUBLIC CopyCGA
+ ARG srcx:WORD,srcy:WORD,width:WORD,height:WORD,destx:WORD,desty:WORD
+ USES si,di
+ push ds
+
+ mov ax,0b800h
+ mov es,ax
+ mov ds,ax
+ shl [width],1
+ shl [destx],1
+ shl [srcx],1
+
+ mov ax,[srcy]
+ cmp ax,[desty]
+ jb @@1
+ ja @@2
+ mov ax,[srcx]
+ cmp ax,[destx]
+ jb @@0
+;
+; Copy from sourcex to destx, right
+;
+ mov dx,[height]
+ mov bx,[srcy] ;source & dest are the same!
+ shl bx,1
+ cld
+
+@@aa:
+ mov si,[ss:CGAlookup+bx]
+ mov di,si
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ add bx,2
+ dec dx
+ jnz @@aa
+ jz @@exit
+;
+; Copy from end of sourcex to end of destx, left
+;
+@@0:
+ mov dx,[height]
+ mov bx,[srcy] ;source & dest are the same!
+ shl bx,1
+
+@@0a0:
+ mov si,[ss:CGAlookup+bx]
+ mov di,si
+ add si,[srcx]
+ add si,[width]
+ dec si
+ add di,[destx]
+ add di,[width]
+ dec di
+ mov cx,[width]
+ std
+ rep movsb
+ cld
+ add bx,2
+ dec dx
+ jnz @@0a0
+ jz @@exit
+;
+; Copy from end of sourcey to end of desty, up
+;
+@@1:
+ mov ah,[BYTE height]
+ mov dl,[BYTE srcy]
+ add dl,ah
+ dec dl
+ mov dh,[BYTE desty]
+ add dh,ah
+ dec dh
+ cld
+
+@@1a0:
+ mov bx,[srcy]
+ add bx,[height]
+ dec bx
+ shl bx,1
+ mov si,[ss:CGAlookup+bx]
+ mov bx,[desty]
+ add bx,[height]
+ dec bx
+ shl bx,1
+ mov di,[ss:CGAlookup+bx]
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ dec [height]
+ jnz @@1a0
+ jz @@exit
+;
+; Copy from sourcey to desty, down
+;
+@@2:
+ mov ah,[BYTE height]
+ mov dl,[BYTE srcy]
+ mov dh,[BYTE desty]
+ cld
+
+@@2a0:
+ mov bx,[srcy]
+ shl bx,1
+ mov si,[ss:CGAlookup+bx]
+ mov bx,[desty]
+ shl bx,1
+ mov di,[ss:CGAlookup+bx]
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ inc [srcy]
+ inc [desty]
+ dec [height]
+ jnz @@2a0
+ jz @@exit
+@@exit:
+ pop ds
+ ret
+ENDP
+
+
+PROC CopyEGA
+PUBLIC CopyEGA
+ ARG srcx:WORD,srcy:WORD,width:WORD,height:WORD,destx:WORD,desty:WORD
+ USES si,di
+ push ds
+
+ mov dx,GCindex
+ mov ax,GCmode OR 100h
+ out dx,ax
+
+ mov ax,0a000h
+ mov es,ax
+ mov ds,ax
+
+ mov ax,[srcy]
+ cmp ax,[desty]
+ jb @@1
+ ja @@2
+ mov ax,[srcx]
+ cmp ax,[destx]
+ jb @@0
+;
+; Copy from sourcex to destx, right
+;
+ mov dx,[height]
+ mov bx,[srcy] ;source & dest are the same!
+ shl bx,1
+ cld
+
+ cmp [ss:videomode],2
+ jb @@a
+@@aa:
+ mov si,[ss:EGA2lookup+bx]
+ mov di,si
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ add bx,2
+ dec dx
+ jnz @@aa
+ jz @@exit
+@@a:
+ mov si,[ss:EGA1lookup+bx]
+ mov di,si
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ add bx,2
+ dec dx
+ jnz @@a
+ jz @@exit
+;
+; Copy from end of sourcex to end of destx, left
+;
+@@0:
+ mov dx,[height]
+ mov bx,[srcy] ;source & dest are the same!
+ shl bx,1
+
+ cmp [ss:videomode],2
+ jb @@0a
+@@0a0:
+ mov si,[ss:EGA2lookup+bx]
+ mov di,si
+ add si,[srcx]
+ add si,[width]
+ dec si
+ add di,[destx]
+ add di,[width]
+ dec di
+ mov cx,[width]
+ std
+ rep movsb
+ cld
+ add bx,2
+ dec dx
+ jnz @@0a0
+ jz @@exit
+@@0a:
+ mov si,[ss:EGA1lookup+bx]
+ mov di,si
+ add si,[srcx]
+ add si,[width]
+ dec si
+ add di,[destx]
+ add di,[width]
+ dec di
+ mov cx,[width]
+ std
+ rep movsb
+ cld
+ add bx,2
+ dec dx
+ jnz @@0a
+ jz @@exit
+;
+; Copy from end of sourcey to end of desty, up
+;
+@@1:
+ mov ah,[BYTE height]
+ mov dl,[BYTE srcy]
+ add dl,ah
+ dec dl
+ mov dh,[BYTE desty]
+ add dh,ah
+ dec dh
+ cld
+
+ cmp [ss:videomode],2
+ jb @@1a
+@@1a0:
+ mov bx,[srcy]
+ add bx,[height]
+ dec bx
+ shl bx,1
+ mov si,[ss:EGA2lookup+bx]
+ mov bx,[desty]
+ add bx,[height]
+ dec bx
+ shl bx,1
+ mov di,[ss:EGA2lookup+bx]
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ dec [height]
+ jnz @@1a0
+ jz @@exit
+@@1a:
+ mov bl,dl
+ xor bh,bh
+ shl bx,1
+ mov si,[ss:EGA1lookup+bx]
+ mov bl,dh
+ xor bh,bh
+ shl bx,1
+ mov di,[ss:EGA1lookup+bx]
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ dec dl
+ dec dh
+ dec ah
+ jnz @@1a
+ jz @@exit
+;
+; Copy from sourcey to desty, down
+;
+@@2:
+ mov ah,[BYTE height]
+ mov dl,[BYTE srcy]
+ mov dh,[BYTE desty]
+ cld
+
+ cmp [ss:videomode],2
+ jb @@2a
+@@2a0:
+ mov bx,[srcy]
+ shl bx,1
+ mov si,[ss:EGA2lookup+bx]
+ mov bx,[desty]
+ shl bx,1
+ mov di,[ss:EGA2lookup+bx]
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ inc [srcy]
+ inc [desty]
+ dec [height]
+ jnz @@2a0
+ jz @@exit
+@@2a:
+ mov bl,dl
+ xor bh,bh
+ shl bx,1
+ mov si,[ss:EGA1lookup+bx]
+ mov bl,dh
+ xor bh,bh
+ shl bx,1
+ mov di,[ss:EGA1lookup+bx]
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ inc dl
+ inc dh
+ dec ah
+ jnz @@2a
+@@exit:
+ pop ds
+ ret
+ENDP
+
+PROC CopyVGA
+PUBLIC CopyVGA
+ ARG srcx:WORD,srcy:WORD,width:WORD,height:WORD,destx:WORD,desty:WORD
+ USES si,di
+ push ds
+
+ mov ax,0a000h
+ mov es,ax
+ mov ds,ax
+ shl [width],3
+ shl [destx],3
+ shl [srcx],3
+
+ mov ax,[srcy]
+ cmp ax,[desty]
+ jb @@1
+ ja @@2
+ mov ax,[srcx]
+ cmp ax,[destx]
+ jb @@0
+;
+; Copy from sourcex to destx, right
+;
+ mov dx,[height]
+ mov bx,[srcy] ;source & dest are the same!
+ shl bx,1
+ cld
+
+@@aa:
+ mov si,[ss:VGAlookup+bx]
+ mov di,si
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ add bx,2
+ dec dx
+ jnz @@aa
+ jz @@exit
+;
+; Copy from end of sourcex to end of destx, left
+;
+@@0:
+ mov dx,[height]
+ mov bx,[srcy] ;source & dest are the same!
+ shl bx,1
+
+@@0a0:
+ mov si,[ss:VGAlookup+bx]
+ mov di,si
+ add si,[srcx]
+ add si,[width]
+ dec si
+ add di,[destx]
+ add di,[width]
+ dec di
+ mov cx,[width]
+ std
+ rep movsb
+ cld
+ add bx,2
+ dec dx
+ jnz @@0a0
+ jz @@exit
+;
+; Copy from end of sourcey to end of desty, up
+;
+@@1:
+ mov ah,[BYTE height]
+ mov dl,[BYTE srcy]
+ add dl,ah
+ dec dl
+ mov dh,[BYTE desty]
+ add dh,ah
+ dec dh
+ cld
+
+@@1a0:
+ mov bx,[srcy]
+ add bx,[height]
+ dec bx
+ shl bx,1
+ mov si,[ss:VGAlookup+bx]
+ mov bx,[desty]
+ add bx,[height]
+ dec bx
+ shl bx,1
+ mov di,[ss:VGAlookup+bx]
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ dec [height]
+ jnz @@1a0
+ jz @@exit
+;
+; Copy from sourcey to desty, down
+;
+@@2:
+ mov ah,[BYTE height]
+ mov dl,[BYTE srcy]
+ mov dh,[BYTE desty]
+ cld
+
+@@2a0:
+ mov bx,[srcy]
+ shl bx,1
+ mov si,[ss:VGAlookup+bx]
+ mov bx,[desty]
+ shl bx,1
+ mov di,[ss:VGAlookup+bx]
+ add si,[srcx]
+ add di,[destx]
+ mov cx,[width]
+ rep movsb
+ inc [srcy]
+ inc [desty]
+ dec [height]
+ jnz @@2a0
+ jz @@exit
+@@exit:
+ pop ds
+ ret
+ENDP
+
+;////////////////////////////////////////////////////////////////////
+;
+; OVERLAY routine
+;
+;////////////////////////////////////////////////////////////////////
+PROC Overlay
+PUBLIC Overlay
+ ARG tsize:WORD
+
+ push di
+ push si
+
+ mov di,OFFSET tdata
+ mov bx,[tsize]
+ shl bx,1
+ mov si,[videomode]
+ shl si,1
+ mov ax,[OverTable+si]
+ jmp ax
+
+LABEL OverlayCGA PROC
+
+ mov cx,[csize+bx-2]
+ shr cx,1
+ mov si,[Csparse+bx-2]
+@@c1: lodsw
+ or [di],ax
+ add di,2
+ loop @@c1
+
+ pop si
+ pop di
+ ret
+
+LABEL OverlayEGA PROC
+
+ mov cx,[esize+bx-2]
+ shr cx,1
+ mov si,[Esparse+bx-2]
+@@e1: lodsw
+ or [di],ax
+ add di,2
+ loop @@e1
+
+ pop si
+ pop di
+ ret
+
+LABEL OverlayVGA PROC
+
+ mov cx,[vsize+bx-2]
+ shr cx,1
+ mov si,[Vsparse+bx-2]
+@@v1: lodsw
+ or [di],ax
+ add di,2
+ loop @@v1
+
+ pop si
+ pop di
+ ret
+
+ENDP
+
+END
\ No newline at end of file
projects / 16.git / blobdiff