流水灯.asm

单片机的实用程序代码

ORG 0000H
AJMP MAIN
ORG 0030H
MAIN:clr p2.1
SETB P2.0
mov P0 , #01h
MOV A ,P0
LOOP:RL A
LCALL DELAY
MOV P0,A
LCALL DELAY
SJMP LOOP
DELAY:MOV R6,#255
D1:   MOV R7,#255
DJNZ R7,$
DJNZ R6,D1
RET