h56s.asm

上课老师给的8086仿真器

	ORG 0740H
HA6S:	MOV SP,#53H
HA6S1:	MOV R6,#00H
HA6S2:	MOV DPTR,#8000H
	MOV A,R6
	MOVX @DPTR,A
  	MOV R2,#0BH
	LCALL DELAY
	INC R6
	CJNE R6,#0FFH,HA6S2
HA6S3:	MOV DPTR,#8000H
	DEC R6
	MOV A,R6
	MOVX @DPTR,A
 	MOV R2,#0BH
	LCALL DELAY
	CJNE R6,#00H,HA6S3
	SJMP HA6S1
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