INT 15 - SYSTEM - ENABLE/DISABLE WATCHDOG TIMEOUT (PS50+IBM PS/2 Models 50,60,70,80) AH = C3h AL = function 00h disable PS/2IBM PS/2, any model watchdog timer 01h enable PS/2IBM PS/2, any model watchdog timer BX = timer counter (0001h-00FFh) 02h disable Gearbox system 03h enable Gearbox system Return: CF set on error CF clear if successful Note: the watchdog timer generates an NMIsee Non-Maskable Interrupt SeeAlso: INT 21/AH=2Bh/CX=6269h"WDTSR"