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+.\" Copyright (c) 1999 Takanori Watanabe
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd September 22, 2016
+.Dt INTPM 4
+.Os
+.Sh NAME
+.Nm intpm
+.Nd Intel PIIX4 Power Management controller driver
+.Sh SYNOPSIS
+.Cd device pci
+.Cd device smbus
+.Cd device smb
+.Cd device intpm
+.Sh DESCRIPTION
+The
+.Nm
+driver provides access to
+.Tn Intel PIIX4
+compatible Power Management controllers.
+Currently, only
+.Xr smbus 4
+controller function is implemented.
+.Sh HARDWARE
+The
+.Nm
+driver supports the following chipsets:
+.Pp
+.Bl -bullet -compact
+.It
+Intel 82371AB/82443MX
+.It
+ATI IXP400
+.It
+AMD SB600/7x0/8x0/9x0 southbridges
+.It
+AMD Axx/Hudson/Bolton FCHs
+.It
+AMD FCH integrated into Family 15h Models 60h-6Fh, 70h-7Fh Processors
+.It
+AMD FCH integrated into Family 16h Models 00h-0Fh, 30h-3Fh Processors
+.El
+.Sh SEE ALSO
+.Xr amdpm 4 ,
+.Xr amdsmb 4 ,
+.Xr ichsmb 4 ,
+.Xr smb 4 ,
+.Xr smbus 4
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Fx 3.4 .
+.Sh AUTHORS
+This
+manual page was written by
+.An Takanori Watanabe Aq Mt takawata@shidahara1.planet.sci.kobe-u.ac.jp .
+.Sh BUGS
+This device requires IRQ 9 exclusively.
+To use this, you should enable
+ACPI function in BIOS configuration, or PnP mechanism assigns conflicted
+IRQ for PnP ISA card.
+And do not use IRQ 9 for Non-PnP ISA cards.