汇编实操项目·内部中断T0定时器0.5s八位流水灯

18纯情***

;型号：STC89C52RC foc12Mhz

ORG 0000H
LJMP MAIN
ORG 000BH
LJMP TT0
ORG 0100H

MAIN:
SETB EA
SETB ET0
SETB TR0
MOV TMOD,#01H
MOV A,#0FEH
MOV R7,#50
MOV TH0,#0D8H
MOV TL0,#0F0H
SJMP $

TT0:MOV P0,A
DJNZ R7,AA
MOV R7,#50
RL A
AA:
MOV TH0,#0D8H
MOV TL0,#0F0H
RETI
END

jker***

学习了,感谢分享