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1.1
date	97.11.27.09.32.40;	author yap;	state Exp;
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1.1
log
@Initial revision
@
text
@title pgm16_2b, timer_tick
; 
; timer interrupt routine from p.344 of text
;
        EXTRN timer_flag:byte
        PUBLIC timer_tick
.model small
.code
; 
timer_tick proc
        push ds
        push ax
        mov ax,seg timer_flag
        mov ds,ax
        mov timer_flag,1
        pop ax
        pop ds
        iret
timer_tick endp
        end
@
