readport.c

公司vc培训的时候,给大家几个例子,比较实用,拿来分享

/*............................... READPORT.C ................10-20-91.......*/
/*  This program prompts the user for a hex i/o port address and then reads */
/*  the port and displays the hex result.                                   */
/*..........................................................................*/


main()
{
	unsigned paddr,pdata;

LOOP:
	printf("Input port address (hex): ");
	scanf("%x",&paddr);
	pdata = inp(paddr);
	printf("Port(%xh) = %xh\n",paddr,pdata);

	goto LOOP;
	return 0;
}