单片机流水灯的实验代码

“8051单片机p0口亮灯实验8个发光二极管，先1个亮，再2个亮，3个亮，一直到8个亮”
ORG 0000H
AJMP MAIN
ORG 0003H
RETI
MAIN: MOV P1,#0FFH
LCALL DELAY
MOV R1,#0
MOV DPTR,#TAB
MAIN1: MOV A,R1
MOVC A,@A+DPTR
MOV P1,A
LCALL DELAY
INC R1
CJNE R1,#8,MAIN1
AJMP MAIN

DELAY: MOV R4,#08H
DL01: MOV R3,#74H
DL00: MOV R2,#0D6H
DJNZ R2,$
DJNZ R3,DL00
DJNZ R4,DL01
NOP
RET
TAB: DB 11111110B
DB 11111100B
DB 11111000B
DB 11110000B
DB 11100000B
DB 11000000B
DB 10000000B
DB 00000000B
END