114 lines
3.4 KiB
Groff
114 lines
3.4 KiB
Groff
.\"
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.\" Copyright (c) 1999
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.\" Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer as
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.\" the first lines of this file unmodified.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $Id: atkbd.4,v 1.3 1999/05/16 20:48:21 mph Exp $
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.\"
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.Dd February 9, 1999
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.Dt ATKBD 4
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.Os FreeBSD
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.Sh NAME
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.Nm atkbd
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.Nd
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the AT keyboard interface
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.Sh SYNOPSIS
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.Cd "device atkbd0 at atkbdc? irq 1"
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.Sh DESCRIPTION
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The
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.Nm
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driver, together with the
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.Nm atkbdc
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driver, provides access to the AT 84 keyboard or the AT enhanced keyboard
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which is connected to the AT keyboard controller.
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.Pp
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This driver is required for the console drivers
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.Xr syscons 4
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and
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.Xr pcvt 4 .
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.Pp
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There can be only one
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.Nm
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device defined in the kernel configuration file. This device also
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requires the
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.Nm atkbdc
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keyboard controller to be present.
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The
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.Em irq
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number must always be 1; there is no provision of changing the number.
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.Sh DRIVER CONFIGURATION
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.\".Ss Kernel Configuration Options
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.Ss Driver Flags
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The
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.Nm
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driver accepts the following driver flags. They can be set either in the
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kernel configuration file
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.Pq see Xr config 8 ,
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or else in the User Configuration Menu at boot time
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.Pq see Xr boot 8 .
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.Bl -tag -width FAIL
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.It bit 0 (FAIL_IF_NO_KBD)
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By default the
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.Nm
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driver will install even if a keyboard is not actually connected to the
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system.
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This option prevents the driver from being installed in this situation.
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.It bit 1 (NO_RESET)
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When this option is given, the
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.Nm
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driver will not reset the keyboard when initializing it.
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It may be useful for laptop computers whose function keys
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have special functions and these functions are forgotten when the
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keyboard is reset.
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.It bit 2 (ALT_SCANCODESET)
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Certain keyboards, such as those on some ThinkPad models, behave
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like the old XT keyboard and require this option.
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.El
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.\".Sh FILES
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.\".Sh EXAMPLE
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.\".Sh DIAGNOSTICS
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.\".Sh CAVEATS
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.\".Sh BUGS
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.Sh SEE ALSO
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.Xr atkbdc 4 ,
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.Xr pcvt 4 ,
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.Xr psm 4 ,
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.Xr syscons 4 ,
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.Xr boot 8 ,
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.Xr config 8 .
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Fx 3.1 .
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.Sh AUTHORS
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The
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.Nm
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driver was written by
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.An S<EFBFBD>ren Schmidt Aq sos@FreeBSD.org
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and
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.An Kazutaka Yokota Aq yokota@FreeBSD.org .
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This manual page was written by
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.An Kazutaka Yokota .
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