/**********************/
/*     競賽搶答器     */
/**********************/
#include<stdio.h>
#include<conio.h>
#include "..\\ApiEx.h"

#pragma comment(lib,"..\\ApiEx.lib")

int led[8]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07};	/*數碼表*/
int num[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
int  i=0;

void main()
{
	BYTE	data;
	if(!Startup())			/*打開設備*/
	{
		printf("ERROR: Open Device Error!\n");
		return;
	}
	printf("ESC is to exit!");
	PortWriteByte(0x28b,0x89);		/*設8255為A口輸出,C口輸入*/
  	for(;;)
	{
		do{
			PortReadByte(0x28a,&data);	/*若C口的數據為0,則繼續從C口輸入*/
		}while(!data);
		for(i=0;i<8;i++)			/*否則進行依次與num中數比較*/
		{
			if(data==num[i])
			{
				printf("\7");	//響鈴
				break;
			}	/*若有相等*/
		}
		if(i<8)
		{
			PortWriteByte(0x288,led[i+1]);
			data=0;			/*從A口輸出與之對應的LED段碼*/
		}
        if(getch() == 27)
			exit(0);		/*等待按鍵,若為ESC則退出*/
		PortWriteByte(0x288,0);		/*否則關閉LED顯示*/
	}
	Cleanup();				/*關閉設備*/
}