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+.\"	$OpenBSD: isagpio.4,v 1.5 2013/07/16 16:05:49 schwarze Exp $
+.\"
+.\" Copyright (c) 2006 Oleg Safiullin <form@pdp-11.org.ru>
+.\" 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 unmodified, 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 $Mdocdate: July 16 2013 $
+.Dt ISAGPIO 4
+.Os
+.Sh NAME
+.Nm isagpio
+.Nd ISA I/O mapped as GPIO
+.Sh SYNOPSIS
+.Cd "isagpio0 at isa? port 0x78"
+.Cd "isagpio1 at isa? port 0x80"
+.Cd "gpio* at isagpio?"
+.Sh DESCRIPTION
+The
+.Nm
+driver allows access to the 8-bit ISA I/O space through the
+.Xr gpio 4
+framework, thus making use of the simple GPIO devices connected directly
+to the ISA bus.
+.Sh SEE ALSO
+.Xr gpio 4 ,
+.Xr intro 4 ,
+.Xr isa 4 ,
+.Xr gpioctl 8
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Ox 4.0 .
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Oleg Safiullin Aq Mt form@pdp-11.org.ru .