汇编实操项目·内部中断T0定时器0.5s八位流水灯
;型号:STC89C52RC foc12MhzORG 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 学习了,感谢分享
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