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freebsd/share/man/man4/man4.sparc64/clkbrd.4
Ruslan Ermilov 0d0a2dff3b Document a lot of sparc64 internals.
Submitted by:	marius
Reviewed by:	ru
Approved by:	re (blanket)
X-MFC:		not before the code in RELENG_5 matches
		these man pages or vice versa
2005-06-22 15:35:14 +00:00

89 lines
2.4 KiB
Groff

.\"-
.\" Copyright (c) 2004 Jason L. Wright (jason@thought.net)
.\" All rights reserved.
.\"
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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.\" 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
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.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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.\" from: OpenBSD: clkbrd.4,v 1.2 2005/02/21 11:29:36 jmc Exp
.\" $FreeBSD$
.\"
.Dd June 18, 2005
.Dt CLKBRD 4 sparc64
.Os
.Sh NAME
.Nm clkbrd
.Nd "clock board"
.Sh SYNOPSIS
.Cd "device clkbrd"
.Sh DESCRIPTION
The
.Nm
driver provides support for the clock board found in
.Tn Sun Enterprise xx00
systems.
The clock board has three status LEDs labeled
.Dq Li Power ,
.Dq Li Failure
and
.Dq Li Cycling .
These LEDs are also mirrored on the main front panel.
The
.Dq Li Cycling
LED can be made to blink by writing
.Tn ASCII
strings to the
.Pa /dev/led/clockboard
device.
.Pp
On attach the
.Nm
driver also prints out the number of board slots the chassis provides.
.Sh FILES
.Bl -tag -width ".Pa /dev/led/clockboard"
.It Pa /dev/led/clockboard
clock board LED device node
.El
.Sh CAVEATS
Hardware management functionality is not implemented.
.Sh SEE ALSO
.Xr fhc 4 ,
.Xr led 4
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 3.7 .
The first
.Fx
version to include it was
.Fx 6.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An "Jason L. Wright"
and ported to
.Fx
by
.An "Marius Strobl" Aq marius@FreeBSD.org .