writport.c

公司vc培训的时候,给大家几个例子,比较实用,拿来分享

/*............................... WRITPORT.C ................10-20-91.......*/
/*  This program prompts the user for a hex i/o port address and a hex data */
/*  byte value.  Then it writes this byte to the port.                      */
/*..........................................................................*/


main()
{
	unsigned paddr,pdata;

LOOP:
	printf("Input port address (hex), data byte (hex): ");
	scanf("%x,%x",&paddr,&pdata);
	outp(paddr,pdata);

	goto LOOP;
	return 0;
}