h51s.asm

上课老师给的8086仿真器

	ORG 0540h
HA1S:	MOV A,#00H
HA1S1:	JB P3.3,HA1S1
	MOV R2,#20H
	LCALL DELAY
	JB P3.3,HA1S1
HA1S2:	JNB P3.3,HA1S2
	MOV R2,#20H
	LCALL DELAY
	JNB P3.3,HA1S2
	INC A
	PUSH ACC
	CPL A
	MOV P1,A
	POP ACC
	AJMP HA1S1
DELAY:	PUSH 02H
DELAY1:  PUSH 02H
DELAY2: PUSH 02H
DELAY3: DJNZ R2,DELAY3
	POP 02H
	DJNZ R2,DELAY2
	POP 02H
	DJNZ R2,DELAY1
	POP 02H
	DJNZ R2,DELAY
	RET
	END