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+.\"	$NetBSD: piixide.4,v 1.9 2010/07/30 16:05:07 njoly Exp $
+.\"
+.\" Copyright (c) 2003 Manuel Bouyer.
+.\"
+.\" 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 ``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 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 July 30, 2010
+.Dt PIIXIDE 4
+.Os
+.Sh NAME
+.Nm piixide
+.Nd Intel IDE/SATA disk controllers driver
+.Sh SYNOPSIS
+.Cd "piixide* at pci? dev ? function ? flags 0x0000"
+.Sh DESCRIPTION
+The
+.Nm
+driver supports the Intel PIIX, PIIX3, PIIX4, and
+82801 (ICH/ICH0/ICH2/ICH3/ICH4/ICH5/ICH6/ICH7/ICH8/ICH9/ICH10) IDE/SATA
+controllers and provides the interface with the hardware for the
+.Xr ata 4
+driver.
+.Pp
+The 0x0002 flag forces the
+.Nm
+driver to disable DMA on chipsets for which DMA would normally be
+enabled.
+This can be used as a debugging aid, or to work around
+problems where the IDE controller is wired up to the system incorrectly.
+.Sh SEE ALSO
+.Xr ata 4 ,
+.Xr atapi 4 ,
+.Xr intro 4 ,
+.Xr pci 4 ,
+.Xr pciide 4 ,
+.Xr wd 4 ,
+.Xr wdc 4
+.Sh BUGS
+The timings used for the PIO and DMA modes for controllers listed above
+are for a PCI bus running at 30 or 33 MHz.
+This driver may not work properly on overclocked systems.