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.\" 27.\" $FreeBSD$ 28.Dd September 20, 2001 29.Dt PNPBIOS 4 i386 30.Os 31.Sh NAME 32.Nm pnpbios 33.Nd support for embedded devices on the motherboard 34.Sh DESCRIPTION 35The 36.Nm 37driver enumerates embedded ISA devices on the motherboard whose BIOS 38supports 39.Dq "Plug and Play BIOS Specification" . 40It assigns ISA bus resources (interrupt line, DMA channel, I/O ports, 41and memory region) to each device and activates it. 42.Pp 43If it cannot assign necessary resources to a device without 44causing conflict with other devices in the system, 45the device will not be activated and will be unavailable 46to programs. 47.Sh CAVEATS 48There is no explicit way to disable individual embedded devices. 49The 50.Nm 51driver will find all devices reported by the 52.Dq "Plug and Play (PnP)" 53BIOS and try to activate them all. 54.Pp 55There is no way to explicitly assign particular resource to a device. 56The resource assignment is fully automatic and there is 57no provision for manual override. 58.Sh SEE ALSO 59.Xr pnp 4 60.Sh STANDARDS 61.Rs 62.%A Compaq 63.%A Phenix 64.%A Intel 65.%T "Plug and Play BIOS Specification Version 1.0A" 66.%D May 5, 1994 67.Re 68.Pp 69.Rs 70.%A Compaq 71.%A Phenix 72.%A Intel 73.%T "Plug and Play BIOS CLARIFICATION Paper for Plug and Play BIOS Specification Version 1.0A" 74.%D October 6, 1994 75.Re 76.Sh HISTORY 77The 78.Nm 79driver first appeared in 80.Fx 4.0 . 81.Sh AUTHORS 82The 83.Nm 84driver was written by 85.An Mike Smith . 86