b11-1.asm

汇编语言的设计

	ORG	0000H
	LJMP	MAIN
	ORG     0023H
	LJMP 	L4
	ORG 	1000H
MAIN:	MOV 	TMOD,#20H
	MOV 	TH1,#72H
	MOV 	TL1,#72H
	MOV 	87H,#00
	SETB 	TR1
	SETB 	EA
	MOV 	SCON,#50H
	SETB 	ES
	MOV 	R1,#30H
	MOV 	SBUF,@R1
	INC	R1
	MOV 	R0,#40H
L1:	SJMP 	L1
L2:	MOV 	A,SBUF
	CLR 	RI
	MOV 	@R0,A
	INC 	R0
	CJNE 	R0,#50H,L3
	CLR 	ES
	RETI
L3:	MOV 	SBUF,@R1
	INC 	R1
	RETI
L4:	JNB 	SBUF,L2
	CLR 	TI
	RETI
	END