ICHWD(4) BSD Kernel Interfaces Manual ICHWD(4)NAME
ichwd -- device driver for the Intel ICH watchdog interrupt timer
SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file:
device ichwd
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
ichwd_load="YES"
DESCRIPTION
The ichwd driver provides watchdog(4) support for the watchdog interrupt timer present on all Intel ICH motherboard chipsets.
The ICH WDT counts down in ticks of approximately 0.6 seconds; the exact value depends on hardware quality and environmental factors. Sup-
ported watchdog intervals range from 2 to 63 ticks.
Note that on some ICH-based systems, the WDT may be present but disabled, either in hardware or by the BIOS. The ichwd driver attempts to
detect this condition and will refuse to attach if it believes the WDT is disabled.
SEE ALSO watchdog(4), watchdog(8), watchdogd(8), watchdog(9)
Using the Intel ICH Family Watchdog Timer (WDT), Intel Application Note AP-725, Document Number 292273-001.
HISTORY
The ichwd driver first appeared in FreeBSD 5.3.
AUTHORS
The ichwd driver was written by Wm. Daryl Hawkins <dhawkins@tamu.edu> of Texas A&M University and Dag-Erling Smorgrav <des@FreeBSD.org>.
This manual page was written by Dag-Erling Smorgrav <des@FreeBSD.org>.
BSD August 20, 2008 BSD
Check Out this Related Man Page
SND_ICH(4) BSD Kernel Interfaces Manual SND_ICH(4)NAME
snd_ich -- Intel ICH AC'97 and compatible bridge device driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file:
device sound
device snd_ich
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
snd_ich_load="YES"
DESCRIPTION
The snd_ich bridge driver allows the generic audio driver sound(4) to attach to Intel ICH AC'97 and compatible audio devices.
Some later chips, like ICH6/ICH7, depending on wiring can instead implement newer Intel HD Audio specification, which is supported by
snd_hda(4) driver.
HARDWARE
The snd_ich driver supports the following audio devices:
o AMD 768
o AMD 8111
o Intel 443MX
o Intel ICH
o Intel ICH revision 1
o Intel ICH2
o Intel ICH3
o Intel ICH4
o Intel ICH5
o Intel ICH6
o Intel ICH7
o NVIDIA nForce
o NVIDIA nForce2
o NVIDIA nForce2 400
o NVIDIA nForce3
o NVIDIA nForce3 250
o NVIDIA nForce4
o SiS 7012
SEE ALSO sound(4), snd_hda(4)HISTORY
The snd_ich device driver first appeared in FreeBSD 4.2.
AUTHORS
This manual page was written by Jorge Mario G. Mazo <jgutie11@eafit.edu.co>.
BSD January 6, 2009 BSD
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