PWDOG(4)                  OpenBSD Programmer's Manual                 PWDOG(4)

NAME
     pwdog - Quancom PWDOG1 watchdog timer device

SYNOPSIS
     pwdog0 at pci?

DESCRIPTION
     The pwdog driver provides support for Quancom PWDOG1 boards.

     If the kernel crashes, the watchdog timer is not reset and the system
     will reboot (assuming a proper connection is made between the PWDOG1 and
     the motherboard).  Alternatively, the watchdog can be reinitialized via a
     userland process which ensures that process scheduling, not just kernel
     timeout processing, is still taking place.  See watchdog(4) and
     watchdogd(8) for more information.

     The timeout period of the PWDOG1 card is set using DIP switches and can-
     not be changed by software.

SEE ALSO
     intro(4), pci(4), watchdog(4), watchdogd(8)

HISTORY
     The pwdog driver first appeared in OpenBSD 4.1.

AUTHORS
     The pwdog driver was written by Marc Balmer <mbalmer@openbsd.org>.

OpenBSD 4.7                    December 23, 2007                             1
