8-5-2.asm

书籍8051入门篇

;8-5-2.ASM
$MOD51
	ORG	0000H
	CLR	CY		;CY=00H
	MOV	A,#0F2H		;A=F2H
	SUBB	A,#69H		;A=A-69H=89H CY=0
	MOV	P1,A		;P1=!PSW
	END