b8-1.asm

汇编语言的设计

	ORG	0000H
	LJMP	MAIN
	ORG 	1000H
MAIN:	MOV	R0,#30H
	MOV 	P2,#7FH
	MOV	R1,#78H
L1:     MOVX 	@R1,A
	LCALL	DALLY		
L2:	JNB	P3.3,L2
	MOVX	A,@R1
	MOV	@R0,A
	INC 	R0
	CJNE	R0,#40H,L1
L3:	SJMP	L3
	NOP
	NOP
	NOP
DALLY:	MOV 	R2,#10H
L4:	DJNZ	R2,L4
	RET
        END