p6_4.c

单片机原理与应用实例教程 单片机原理与应用实例教程

void SQR( unsigned char* m ){				/*对应汇编程序中的SQR子程序
	*m = (*m) * (*m);
}

main(){
	unsigned char data* pRAM = 0x00;		/*装入片内RAM首地址*/
	unsigned char a = pRAM[0x20];
	unsigned char b = pRAM[0x21];
	unsigned char c;
	SQR( &a );					/*计算a的平方*/
	SQR( &b );					/*计算b的平方*/
	c = a + b;					/*计算c的值*/
	pRAM[0x30] = c;					/*30H ← c */
}