mc8051fun/long_1cpl__.c

#include "mc8051fun.h"

static void long_1cpl__() __naked
{
	__asm
	.globl	long_1cpl

long_1cpl:

	clr	c
001$:	
	mov	a,#0xff
	subb	a,@r0
	mov	@r0,a
	inc	r0
	djnz	r7,001$
	ret

	__endasm;	
}