Int 15H [PS/2] Function C3H (195) Set watchdog time-out

Enables or disables a watchdog timer.

Call with:

AH = C3H

AL = subfunction

00H to disable watchdog time-out

01H to enable watchdog time-out

BX = watchdog timer counter (if AL = 01H)

Returns:

If function successful

Carry flag = clear

If function unsuccessful

Carry flag = set

Notes:

The watchdog timer generates an NMI interrupt.

This function is not available on the PS/2 Models 25 and 30.