MOV	 A,#55H
AGAIN:	MOV	 P1,A
		ACALL DELAY_200m
		CPL 	 A
		SJMP	 AGAIN
DELAY_200m:
		MOV	 R5,#9
HERE1:	MOV	 R4,#242
HERE2:	MOV	 R3,#255
HERE3:	DJNZ	 R3,HERE3
		DJNZ	 R4,HERE2
		DJNZ	 R5,HERE1
		RET