warn.asm

来自「8951系列单片机仿真」· 汇编 代码 · 共 22 行

FLAG		BIT 00H 
		ORG 00H 
START:	JB P1.7,START 
		JNB FLAG,NEXT 
		MOV R2,#200 
DV:		CPL P1.0 
		LCALL DELY500 
		LCALL DELY500 
		DJNZ R2,DV 
		CPL FLAG 
NEXT:	MOV R2,#200 
DV1:		CPL P1.0 
		LCALL DELY500 
		DJNZ R2,DV1 
		CPL FLAG 
		SJMP START 
DELY500:	MOV R7,#250 
LOOP:	NOP 
		DJNZ R7,LOOP 
		RET 
		END