1.\" 2.\" Copyright (c) 2001 3.\" Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer as 11.\" the first lines of this file unmodified. 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 ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.Dd September 20, 2001 27.Dt PNPBIOS 4 i386 28.Os 29.Sh NAME 30.Nm pnpbios 31.Nd support for embedded devices on the motherboard 32.Sh DESCRIPTION 33The 34.Nm 35driver enumerates embedded ISA devices on the motherboard whose BIOS 36supports 37.Dq "Plug and Play BIOS Specification" . 38It assigns ISA bus resources (interrupt line, DMA channel, I/O ports, 39and memory region) to each device and activates it. 40.Pp 41If it cannot assign necessary resources to a device without 42causing conflict with other devices in the system, 43the device will not be activated and will be unavailable 44to programs. 45.Sh SEE ALSO 46.Xr pnp 4 47.Sh STANDARDS 48.Rs 49.%A Compaq 50.%A Phenix 51.%A Intel 52.%T "Plug and Play BIOS Specification Version 1.0A" 53.%D May 5, 1994 54.Re 55.Pp 56.Rs 57.%A Compaq 58.%A Phenix 59.%A Intel 60.%T "Plug and Play BIOS CLARIFICATION Paper for Plug and Play BIOS Specification Version 1.0A" 61.%D October 6, 1994 62.Re 63.Sh HISTORY 64The 65.Nm 66driver first appeared in 67.Fx 4.0 . 68.Sh AUTHORS 69The 70.Nm 71driver was written by 72.An Mike Smith . 73.Sh CAVEATS 74There is no explicit way to disable individual embedded devices. 75The 76.Nm 77driver will find all devices reported by the 78.Dq "Plug and Play (PnP)" 79BIOS and try to activate them all. 80.Pp 81There is no way to explicitly assign particular resource to a device. 82The resource assignment is fully automatic and there is 83no provision for manual override. 84