#include <stdio.h>
#include <unistd.h>
#include <asm/io.h>
 
#define BASEPORT 0x320 /* our special address */
 
int main()
{
  /* Get access to the ports */
  if (ioperm(BASEPORT, 3, 1)) { perror("ioperm"); exit(1);}
 
 
  /* Set the data signals (D0-7) of the port to all low (0) */
  outb(1, BASEPORT);
  usleep(100000);
  outb(0, BASEPORT);
  usleep(50000000);
  outb(2, BASEPORT);
  usleep(100000);
  outb(0, BASEPORT);
  usleep(500000);
 
 
  /* Sleep for a while (100 ms) */
  /* usleep(10000); */
 
  /* Read from the status port (BASE+1) and display the result */
  /*printf("status: %d\n", inb(BASEPORT + 1)); */
 
  /* We don't need the ports anymore */
  if (ioperm(BASEPORT, 3, 0)) {perror("ioperm"); exit(1);}
 
  exit(0);
}