Boser HS-2613 Manual page 33

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
int 21h
.stack
begin endp
end begin
;go back to dos
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