GRIPS 2: Government Rast…rocessing Software & Data/GRIPS_2.cdr/dos/imdisp/source/paradise.asm

Assembly Source File | 1991-01-03 | 6KB | 282 lines

.MODEL  LARGE
.CODE

      PUBLIC  _WriteLinePAR
_WriteLinePAR  PROC
      push    bp
      mov     bp,sp

      push ds             ;microsoft requires these registers be
      push si             ;maintained across all calls; all other
      push di             ;registers can be modified freely
                          ;bp+6 is dummy variable hue
      mov bx, [bp+6]      ;x1 - beginning column
      mov cx, [bp+8]      ;# of samples
      mov dx, [bp+10]     ;y  - screen row
      mov ax, [bp+12]     ;segment of buffer
      mov si,ax
      mov ax, [bp+14]     ;offset of buffer
      mov ds,ax
      mov ax, 0a000h
      mov es,ax
      mov ax,640
      mov bx, [bp+10]
      mov cx,[bp+6]
      mul bx
      add ax,cx
      jnc smmall1
      inc dx
smmall1:
      mov bx,dx
      mov dx,ax
      mov cl,4
      shl ax,cl
      shr ax,cl
      mov di,ax
      mov cl,12
      shr dx,cl
      mov cl,4
      shl bx,cl
      add bx,dx
      mov dx, 3ceh
      mov al,0fh
      mov ah,5
      out dx, ax
      mov dx, 3ceh
      mov al,9h
      mov ah, bl
      out dx, ax
      cld
      mov cx,[bp+8]
rep   movsb


        pop di              ;
        pop si              ;restore registers
        pop ds              ;
        pop bp              ;restore stack frame
        ret                 ;return to caller

_WriteLinePAR ENDP



        PUBLIC _ClearDisplayPAR
_ClearDisplayPAR  PROC
        push    bp
        mov     bp,sp

        push ds             ;microsoft requires these registers be
        push si             ;maintained across all calls; all other
        push di             ;registers can be modified freely
      mov bx, [bp+6]
      mov dx, 3ceh
      mov al,0fh
      mov ah,5
      out dx, ax
      mov ax,0a000h
      mov es,ax
      mov dx,3ceh
      mov si,bx
      mov bl,0
outer_loop:
      mov al,9h
      mov ah, bl
      out dx, ax
      cld
      mov di,0
      mov ax,si
      xor ah,ah
      mov cx,8000h
      rep stosb
      add bl,8h
      cmp bl,80h
      jnz outer_loop

        pop di              ;
        pop si              ;restore registers
        pop ds              ;
        pop bp              ;restore stack frame
        ret                 ;return to caller

_ClearDisplayPAR ENDP



        PUBLIC  _ReadLinePAR
_ReadLinePAR PROC
        push    bp
        mov     bp,sp

        push ds             ;microsoft requires these registers be
        push si             ;maintained across all calls; all other
        push di             ;registers can be modified freely
                            ;bp+6 is dummy variable hue
        mov bx, [bp+6]      ;x1 - beginning column
        mov cx, [bp+8]      ;# of samples
        mov dx, [bp+10]     ;y  - screen row
        mov ax, [bp+12]     ;segment of buffer
        mov di,ax
        mov ax, [bp+14]     ;offset of buffer
        mov es,ax
        mov ax, 0a000h
       mov ds,ax
      mov ax,640
      mov bx, [bp+10]
      mov cx,[bp+6]
      mul bx
      add ax,cx
      jnc smmall2
      inc dx
smmall2:
      mov bx,dx
      mov dx,ax
      mov cl,4
      shl ax,cl
      shr ax,cl
      mov si,ax
      mov cl,12
      shr dx,cl
      mov cl,4
      shl bx,cl
      add bx,dx
      mov dx, 3ceh
      mov al,0fh
      mov ah,5
      out dx, ax
      mov dx, 3ceh
      mov al,9h
      mov ah, bl
      out dx, ax
      cld
      mov cx,[bp+8]
rep   movsb


        pop di              ;
        pop si              ;restore registers
        pop ds              ;
        pop bp              ;restore stack frame
        ret                 ;return to caller

_ReadLinePAR ENDP



        PUBLIC  _ReadPixelPAR
_ReadPixelPAR PROC
        push    bp
        mov     bp,sp

        push ds             ;microsoft requires these registers be
        push si             ;maintained across all calls; all other
        push di             ;registers can be modified freely
           pushf               ; save flags for cld below - mwm 8/27/90
        mov bx, [bp+6]      ;row
        mov cx, [bp+8]      ;col
        mov ax, [bp+10]     ;segment of buffer
        mov di,ax
        mov ax, [bp+12]     ;offset of buffer
        mov es,ax
        mov ax, 0a000h
        mov ds,ax
        mov ax,640
        mov bx, [bp+6]
        mov cx,[bp+8]
        mul bx
      add ax,cx
      jnc smmall3
      inc dx
smmall3:
      mov bx,dx
      mov dx,ax
      mov cl,4
      shl ax,cl
      shr ax,cl
      mov si,ax
      mov cl,12
      shr dx,cl
      mov cl,4
      shl bx,cl
      add bx,dx
      mov dx,3ceh
      mov al,0fh
      mov ah,5
      out dx, ax
      mov dx, 3ceh
      mov al,9h
      mov ah, bl
      out dx, ax
      cld
      movsb


        popf                ; restore flags - mwm 8/27/90
        pop di              ;
        pop si              ;restore registers
        pop ds              ;
        pop bp              ;restore stack frame
        ret                 ;return to caller

_ReadPixelPAR ENDP



public _WritePixelPAR
_WritePixelPAR PROC
        push    bp
        mov     bp,sp

        push ds             ;microsoft requires these registers be
        push si             ;maintained across all calls; all other
        push di             ;registers can be modified freely
        mov bx, [bp+6]      ;screen row
        mov cx, [bp+8]      ;screen column
        mov dx, [bp+10]     ;value
        mov ax, 0a000h
        mov es,ax
        mov ax,640
        mov bx, [bp+6]
        mov cx,[bp+8]
        mul bx
        add ax,cx
        jnc smmall4
        inc dx
smmall4:
      mov bx,dx
      mov dx,ax
      mov cl,4
      shl ax,cl
      shr ax,cl
      mov di,ax
      mov cl,12
      shr dx,cl
      mov cl,4
      shl bx,cl
      add bx,dx
      mov dx, 3ceh
      mov al,0fh
      mov ah,5
      out dx, ax
      mov dx, 3ceh
      mov al,9h
      mov ah, bl
      out dx, ax
      cld
      mov ax,[bp+10]
      xor ah,ah
      stosb


        pop di              ;
        pop si              ;restore registers
        pop ds              ;
        pop bp              ;restore stack frame
        ret                 ;return to caller

_WritePixelPAR ENDP



END