s14-3.asm

手把手叫你学单片机

	ORG 0000H
	LJMP MAIN
	ORG 030H
MAIN:	MOV R2,#30
	MOV R1,#00H
	MOV R0,#20H
THERE:	MOV A,R1
	MOV @R0,A
	INC R0  
	INC R1
	DJNZ R2, THERE
	MOV R2,#30
	MOV R0,#20H
	MOV R1,#60H
LOOP:	MOV A,@R0
	CJNE A,#24H,LOOP2
	MOV P1,A
	ACALL DEL
	AJMP LOOP1
LOOP2:	MOV @R1,A
	MOV P0,A
	ACALL DEL
	INC R0
	INC R1
	DJNZ R2,LOOP
LOOP1:	SJMP $
DEL: 	MOV R7,#0FFH
DEL1:	MOV R6,#0FFH
DEL2:   MOV R5,#08H
DEL3:	DJNZ R5,DEL3
	DJNZ R6,DEL2
	DJNZ R7,DEL1
	RET
	END