📄 getkeys.asm
字号:
.code
;==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==
;
;Ask DOS for any pending key press information.
;
;No entry conditions.
;
;On Exit:-
;
;If flags none zero,AL - main byte AH - Auxiluary byte
;otherwise, no keypress available.
;
;KEYS - copy of AX
;
GetKeys proc near
mov ah,1
int 16h
mov ax,0
jz @@0
mov ah,0
int 16h
mov Keys,ax
cmp ax,0
@@0: ret
;
GetKeys endp
.data
Keys dw 0
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