;P1ΏΪ΅ΖΙΑ
                ORG     0000H
                LJMP    MAIN
                ORG     0030H
MAIN:
                MOV     P1,#0FFH
                LCALL   DELAY
                MOV     P1,#00H
                LCALL   DELAY
                LJMP    MAIN

;ΡΣΚ±125ms
DELAY:          MOV     R7,#250
DELAY1:         MOV     R6,#250
DELAY2:         DJNZ    R6,DELAY2
                DJNZ    R7,DELAY1
                RET
                END