const unsigned short data_port    = 0x0378;　　　　　　　　　　　　　　　　　
const unsigned short status_port  = 0x0379;
const unsigned short control_port = 0x037A;

//const unsigned short data_port    = 0x0278;
//const unsigned short status_port  = 0x0279;
//const unsigned short control_port = 0x027A;

//const unsigned short data_port    = 0x03BC;
//const unsigned short status_port  = 0x03BD;
//const unsigned short control_port = 0x03BE;

#define RED_SWITCH		0x80
#define YELLOW_SWITCH		0x40
#define GREEN_SWITCH		0x20
#define SWITCH_MASK		0xE0

#define LED1			0x1E	// 1-1110
#define LED2			0x1D	// 1-1101
#define LED3			0x1B	// 1-1011
#define LED4			0x17	// 1-0111
#define LED5			0x0F	// 0-1111
#define LED1_4			0x16	// 1-0110
#define LED2_5			0x0D	// 0-1101
#define LED_MASK		0x1F

#define ALL_OFF			0xFF


int main()
{
	_outp(control_port, 0xCC); //出力モードにする
	_outp(data_port, ALL_OFF);

	printf("何かキーを押すと赤色LED1/4、黄色LED2/5が点灯します.");
	getch();
	printf("\n");

	printf("何かキーを押すと終了します.");
	for (;;)
	{
		_outp(data_port, RED_SWITCH|LED1_4);
		_outp(data_port, YELLOW_SWITCH|LED2_5);
		if (kbhit())
		{
			getch();
			break;
		}
	}
	_outp(data_port, ALL_OFF);

	return 0;
}