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//============================================
//DOS Watchdog sample program
//Please compile with Turbo C 3.0 to utilized the program
//============================================
int main()
{
//Initialized the WDT program
outp(0x2e,0x87);
outp(0x2e,0x01);
outp(0x2e,0x55);
outp(0x2e,0x55);
//Setting Logical Device Number to 0x07
outp(0x2e,0x07);
outp(0x2f,0x07);
//Set Timer Value(0x73 is LSB while 0x74 is MSB)
outp(0x2e,0x73);
outp(0x2f,0x14);//set to 20 sec (0x14)
//Set Timer Unit to Second/Minute(Bit 7 equal to 1 is second/0 is minute)
//Enable WDT (Bit 6 equal to 1 is enable/0 is disable)
outp(0x2e,0x72);
outp(0x2f,0xC0);//The unit is set as second
return 0;
}

// Copyright 2011, Kees Cook <kees@outflux.net>, License: GPLv2 */
#include <unistd.h>
#include <stdio.h>
#include <sys/io.h>

int main()
{
   printf("via\n"); 


   /* access to watchdog port */
   if (ioperm(0x2e, 0x2e, 1) < 0) {
       perror("0x2e");
       return 1;
   }
   
   /* access to watchdog port */
   if (ioperm(0x2f, 0x2f, 1) < 0) {
       perror("0x2f");
       return 2;
   }

   sleep(1);
   printf("leggo \n");
   printf("%d\n",inb(0x2e));
   printf("scrivo 87\n");
   outb(0x2e,0x87);
   printf("leggo \n");
   printf("%d\n",inb(0x2e));
   outb(0x2e,0x01);
   printf("riscritto\n");
   outb(0x2e,0x55);
   printf("4\n");
   outb(0x2e,0x55);
   //Setting Logical Device Number to 0x07
   outb(0x2e,0x07);
   outb(0x2f,0x07);
   //Set Timer Value(0x73 is LSB while 0x74 is MSB)
   outb(0x2e,0x73);
   outb(0x2f,0x14);//set to 20 sec (0x14)
   //Set Timer Unit to Second/Minute(Bit 7 equal to 1 is second/0 is minute)
   //Enable WDT (Bit 6 equal to 1 is enable/0 is disable)
   outb(0x2e,0x72);
   outb(0x2f,0xC0);//The unit is set as second
   return 0;
}