Global American 2807960, User Manual

Page: 33 / 34

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;;--------------------
;;--------------------
;;ROR
mov cx, 08h
@@:
ror al, 1
call delay
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