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+.\" $OpenBSD: power.4,v 1.1 2006/09/09 14:04:12 jason Exp $
+.\"
+.\" Copyright (c) 2006 Jason L. Wright (jason@thought.net)
+.\" 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 ``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 January 30, 2002
+.Dt POWER 4 sparc64
+.Os
+.Sh NAME
+.Nm power
+.Nd power button
+.Sh SYNOPSIS
+.Cd "power* at ebus?"
+.Sh DESCRIPTION
+Some UltraSPARC host bridges provide an interrupt when the power button
+is depressed.
+The
+.Nm
+driver catches that interrupt.
+If the
+.Nm machdep.kbdreset
+.Xr sysctl 8
+is set to 1,
+.Nm power
+will signal
+.Xr init 8
+to do a clean shutdown and power the machine down.
+.Sh SEE ALSO
+.Xr ebus 4 ,
+.Xr intro 4 ,
+.Xr init 8 ,
+.Xr sysctl 8
+.Sh HISTORY
+The
+.Nm
+driver was first supported in
+.Ox 4.0 .
+.Sh AUTHORS
+The driver was written by
+.An Jason Wright Aq jason@thought.net .