s7-3.asm

来自「手把手教你学单片机（第2版）实验程序」· 汇编 代码 · 共 17 行

	ORG 0000H
	LJMP MAIN
	ORG 030H
MAIN:	MOV A,#00H
PLAY:	MOV P1,A
	ACALL DEL
	INC A
	AJMP PLAY
DEL: 	MOV R7,#0FFH
DEL1:	MOV R6,#0FFH
DEL2:   MOV R5,#01FH
DEL3:	DJNZ R5,DEL3
	DJNZ R6,DEL2
	DJNZ R7,DEL1
	RET
	END