User`s manual

ENDAT-K1001 USERS MANUAL

UNICORN COMPUTER CORP.

Sample code for watch dog timer (using TurboC/C++ 3.0):

#include <stdio.h>

#include <dos.h>

#include <dir.h>

void show_ver();

void main()

{

unsigned int tt;

clrscr();

show_ver();

tt=0;

while((tt==0)||(tt>255))

{

printf("\n\nPlease key in how many seconds you want to reset system (1~255):");

scanf("%d",&tt);

}

outportb(0x2e,0x87); // Unlock register

outportb(0x2e,0x01); // Unlock register

outportb(0x2e,0x55); // Unlock register

outportb(0x2e,0x07); // Set Logic Device number pointer

outportb(0x2f,0x07); // Set Logic Device number

outportb(0x2e,0x71); // Set WDT Comtorl reg CRF71

outportb(0x2f,0x30); // bit 7 CIR interrupt

// bit 6 KBC(MOUSE)interrupt

// bit 5 KBC (Keyboard)interrupt

// bit 0 WDT Status 1:WDT not active / 0: WDT active

outportb(0x2e,0x72); // Set active register is CRF72 " WDT Configuration REG"

outportb(0x2f,0xC0); // bit 7 WDT Time-out value select 1:Second / 0:Minute.

// WDT Output through KRST 1:Enable / 0: Disable

outportb(0x2e,0x74); // Set WDT Time-out LSB CRF74

outportb(0x2f,0x00); //

outportb(0x2e,0x73); // Set WDT Time-out MSB CRF73

outportb(0x2f,tt); // IF SET CRF73 Start WDT Time (Clear REG)

}

void show_ver()

{

unsigned char tmp0;

printf("Designed by attila of UNICORN computer corp. \n2010/10/18 release

version:1.0a\n");

printf("This program is design for test Watch Dog Timer for ENADT-K1001 (ITE8718F).\n");

}