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.\" $OpenBSD: sysbutton.4,v 1.2 2007/04/23 00:28:02 gwk Exp $
.\"
.\" Copyright (c) 2007 Gordon Willem Klok <gwk@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd April 22, 2007
.Dt sysbutton 4 macppc
.Os
.Sh NAME
.Nm sysbutton
.Nd Xserve G4 and G5 front system identifier button
.Sh SYNOPSIS
.Cd "sysbutton* at macgpio?"
.Sh DESCRIPTION
The
.Nm
driver provides support for the system identifier button found on
the front panel of Apple G4 and G5 Xserve machines.
.Pp
If the ddb.console sysctl is set pressing the system identifier
button will cause the machine to enter
.Xr ddb 4 .
.Sh BUGS
If the ddb.console sysctl is not set holding the system identifier button
down will impair system performance.
.Sh SEE ALSO
.Xr intro 4 ,
.Xr macgpio 4 ,
.Xr sysctl 8
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