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ATI.ASM
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Assembly Source File
|
1993-10-22
|
854b
|
48 lines
;
; QPEG video driver
; for ATI chipsets
;
.286
Code Segment Para 'Code'
Assume cs:Code
Org 100h
Procs dw Bank,Init,Exit,0
Bank: shl al,1
push ax
mov dx,cs:ExtReg
mov al,0b2h
out dx,al
inc dx
in al,dx
pop dx
and al,0e1h
or al,dl
mov dx,cs:ExtReg
inc dx
out dx,al
retf
ExtReg dw ?
Init: mov ax,0c000h
mov es,ax
mov dx,es:[0010h]
mov cs:ExtReg,dx
mov al,0beh
out dx,al
inc dx
in al,dx
and al,11110111b
out dx,al
retf
Exit: retf
Code Ends
End Procs
; End of source.