1.\" $OpenBSD: pckbc.4,v 1.18 2010/09/26 20:39:08 miod Exp $ 2.\" $NetBSD: pckbc.4,v 1.2 2000/06/16 06:42:31 augustss Exp $ 3.\" 4.\" Copyright (c) 1999 5.\" Matthias Drochner. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd $Mdocdate: September 26 2010 $ 29.Dt PCKBC 4 30.Os 31.Sh NAME 32.Nm pckbc 33.Nd PC (ISA) keyboard controller driver 34.Sh SYNOPSIS 35.Cd "pckbc* at isa? flags 0x00 " Pq "alpha, amd64, i386, loongson" 36.Cd "pckbc* at ebus? " Pq "sparc64" 37.Cd "pckbd* at pckbc?" 38.Cd "pms* at pckbc?" 39.Sh DESCRIPTION 40The 41.Nm 42driver handles resource allocation and device attachment for the 43traditional PC/AT keyboard controller. 44It provides two logical connections for child devices, the 45.Dq keyboard 46slot for a keyboard and the 47.Dq auxiliary 48slot for mice (the latter might be missing in older keyboard controllers). 49.\" .Pp 50.\" The optional 51.\" .Dq slot 52.\" locator argument can be used to force unusual connections of devices to 53.\" logical slots. 54.\" This feature is for experimentation only, it will not be 55.\" useful in normal operation. 56.Pp 57To avoid attaching a phantom PS/2 keyboard device, the 58.Nm 59driver will attempt to detect USB legacy keyboard emulation on amd64 and i386 60systems. 61Unfortunately, the detection heuristics may fail on older systems with a real 62PS/2 keyboard. 63The keyboard can be forced to attach on these systems, by changing the 64device flags to 1. 65.Sh SEE ALSO 66.Xr ebus 4 , 67.Xr intro 4 , 68.Xr isa 4 , 69.Xr pckbd 4 , 70.Xr pms 4 , 71.Xr boot_config 8 72