#ifndef WATCHDOG_WATCH
#define M_KICK_THE_PUPPY  
{                         
  BSP3_REVB_STB_DOG = 0;  
  BSP3_REVB_STB_DOG = 1;  
}
#else // WATCHDOG_WATCH
#define M_KICK_THE_PUPPY  
{                         
  wdcnt = 0;  
}
#endif // WATCHDOG_WATCH


//////////////////////////////////////////////////
//
//  ISR for timer 0 (unused)
//

#ifndef WATCHDOG_WATCH
VOID noISRt0 (VOID) interrupt 1 using 0 // ET0 DEAD
{
}  /*- end noISRt0 -*/
#else
VOID ISRt0 (VOID) interrupt 1 using 1 // ET0 for watchdog check
{
  SB_TCON_TF0 = 0;
  wdcnt++;
  if (wdcnt > wdchk)
  {
  SF_TMOD = 0; // 16 bit counter
  SB_IE_ET0 = 0;
  SF_TMOD = 1; // 16 bit counter
  SB_IE_ET0 = 1;
  }
  
}  /*- end noISRt0 -*/
#endif // WATCHDOG_WATCH

WATCHDOG_WATCH will enable the check routine when defined
M_KICK_THE_PUPPY is the macro used througout the program to toggle the watchdog.
wdcnt is a global uchar
wdchk is a global uchar you set to the mumber you need.

  SF_TMOD = 0; 
  SB_IE_ET0 = 0;
  SF_TMOD = 1; 
  SB_IE_ET0 = 1;

is just there to make a place to set a breakpoint.

Have fun, don't let the puppy bite you

Erik