.\" $OpenBSD: it.4,v 1.8 2006/09/08 15:09:14 jmc Exp $
.\"
.\" Copyright (c) 2003 Julien Bordet <zejames@greygats.org>
.\" All rights reserved.
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.Dd September 13, 2007
.Dt IT 4
.Os
.Sh NAME
.Nm it
.Nd "ITE IT8705F/12F/16F and SiS SiS950 Super I/O Hardware Monitor"
.Sh SYNOPSIS
.Cd "device it0 at isa? port 0x290"
.Cd "device it1 at isa? port 0xc00"
.Cd "device it2 at isa? port 0xd00"
.Cd "device it3 at isa? port 0x228"
.Sh DESCRIPTION
The
.Nm
driver provides support for the
.Tn IT8705F , IT8712F , IT8716F
and
.Tn SiS950
hardware monitors.
The values are exposed through the
.Dv HW_SENSORS
.Xr sysctl 3
interface.
.Pp
Most supported devices possess 15 sensors:
.Bl -column ".Sy Sensor" ".Sy Units" ".Sy Typical" -offset indent
.It Sy "Sensor" Ta Sy "Units" Ta Sy "Typical Use"
.It Li "Fan0" Ta "RPM" Ta "CPU Fan"
.It Li "Fan1" Ta "RPM" Ta "Fan"
.It Li "Fan2" Ta "RPM" Ta "Fan"
.It Li "IN0" Ta "uV DC" Ta "Core voltage"
.It Li "IN1" Ta "uV DC" Ta "Core voltage"
.It Li "IN2" Ta "uV DC" Ta "+3.3V"
.It Li "IN3" Ta "uV DC" Ta "+5V"
.It Li "IN4" Ta "uV DC" Ta "+12V"
.It Li "IN5" Ta "uV DC" Ta "Unknown"
.It Li "IN6" Ta "uV DC" Ta "-12V"
.It Li "IN7" Ta "uV DC" Ta "-5V"
.It Li "IN8" Ta "uV DC" Ta "VBAT"
.It Li "Temp" Ta "uK" Ta "Motherboard Temperature"
.It Li "Temp" Ta "uK" Ta "Motherboard Temperature"
.It Li "Temp" Ta "uK" Ta "CPU Temperature"
.El
.Pp
For some devices, sensors' names and numbers will be different.
.Sh SEE ALSO
.Xr systat 1 ,
.Xr sysctl 3 ,
.Xr sensorsd 8 ,
.Xr sysctl 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 3.4
and was imported into
.Dx 1.11 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Julien Bordet Aq Mt zejames@greyhats.org .
It was ported to
.Fx
by
.An Constantine A. Murenin Aq Mt cnst@FreeBSD.org
as a part of a Google Summer of Code 2007 project.
.Sh BUGS
Interrupt support is unimplemented.