1.\" $OpenBSD: led.4,v 1.2 2007/05/31 19:19:57 jmc Exp $ 2.\" 3.\" Copyright (c) 2007 Mark Kettenis <kettenis@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: May 31 2007 $ 18.Dt LED 4 sparc64 19.Os 20.Sh NAME 21.Nm led 22.Nd SPARC64 LED driver 23.Sh SYNOPSIS 24.Cd "led* at ebus?" 25.Sh DESCRIPTION 26The 27.Nm 28driver provides support for the front panel alert LED. 29This LED can be made to blink based on the load average on most systems 30by setting the 31.Xr sysctl 3 32variable 33.Ar machdep.led_blink 34to a non-zero value. 35.Sh SEE ALSO 36.Xr sysctl 3 , 37.Xr ebus 4 , 38.Xr intro 4 , 39.Xr sysctl 8 40.Sh HISTORY 41.Ox 42support for the 43.Nm 44first appeared in 45.Ox 4.2 . 46.Sh AUTHORS 47The 48.Nm 49driver was written by 50.An Mark Kettenis Aq kettenis@openbsd.org . 51