Boser HS-2613, Manual

Page: 33 / 72

27
out dx, al
loop @b
pop cx
;;ROL
push cx
mov cx, 08h
@@:
rol al, 1
out dx, al
call delay
loop @b
pop cx
;;--------------------
;flash LED 3 time
mov cx, 01h
@@:
mov al, 0ffh
out dx, al
call delay
mov al,0h
out dx, al
call delay
loop @b
ee:
mov ah, 4ch ;go back to dos
int 21h
.stack
begin endp
end begin