ram62256.asm

22个51单片机的实例

	ORG 000H
	AJMP MAIN
	ORG 0030H
MAIN:	MOV SP,#7H
	MOV DPTR,#0000H
	MOV R7,#20
	MOV A,#1
INPUT:	MOVX @DPTR,A
	INC A
	INC DPTR
	DJNZ R7,INPUT
	MOV 20H,#0
	MOV R7,#20
	MOV DPTR,#0
OUTPUT:	MOVX A,@DPTR
	ADD A,20H
	MOV 20H,A
	INC DPTR
	DJNZ R7,OUTPUT
	MOV P1,20H
LOOP:	SJMP LOOP
	END