ORG 0000H

MAIN:

MOV R0,#8 ;Ñ­»·´ÎÊý

MOV A, #11111110B ;´æÈëµÚÒ»¸öµÆÁÁµÄλÖÃ

LOOP:

MOV P2, A

CALL DELAY

RL A

DJNZ R0, LOOP

MOV R1,#5
MOV A, 00H

LOOP1:

MOV P2, A

CALL DELAY

CPL A

DJNZ R1,LOOP1

JMP MAIN

DELAY: MOV R5, #25

D1: MOV R6, #100

D2: MOV R7, #100

DJNZ R7, $

DJNZ R6, D2

DJNZ R5, D1

RET

END