中断响应.txt

51单片机流水灯程序

	ORG 0000H
	JMP MAIN
	ORG 000BH
	JMP SZZD0
MAIN:
	MOV IE,#82H
	MOV TMOD,#01H
	MOV TH0,#4CH
	MOV TL0,#00H
	MOV R0,#00H
	SETB TR0
	MOV A,#0FEH
	MOV P1,A
WAIT:	JMP WAIT
	RET
SZZD0:
	INC R0
	MOV TH0,#4CH
	MOV TL0,#00h
	CJNE R0,#0AH,FH;返回
	RR A
	MOV P1,A
	MOV R0,#00H
FH:	RETI