1.\" $NetBSD: pnpbios.4,v 1.10 2002/01/15 01:45:28 wiz Exp $ 2.\" 3.\" Copyright (c) 1999-2001 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Lennart Augustsson. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd November 14, 1999 38.Dt PNPBIOS 4 i386 39.Os 40.Sh NAME 41.Nm pnpbios 42.Nd introduction to PnP BIOS support 43.Sh SYNOPSIS 44.Cd "pnpbios0 at mainbus?" 45.Cd "XX* at pnpbios0 index ?" 46.Sh INTRODUCTION 47.Nm 48provides support for finding and attaching devices by 49extracting information from the PnP BIOS of a machine. 50.Sh SUPPORTED DEVICES 51.Nx 52includes the following 53.Nm 54drivers, sorted by driver name: 55.Pp 56.Bl -tag -width speaker -offset indent -compact 57.It com 58serial communications interface 59.It ess 60ESS Technology AudioDrive family audio device driver 61.It fdc 62floppy controller 63.It joy 64game controller 65.It lpt 66parallel port driver 67.It npx 68math coprocessor 69.It pciide 70PCI IDE controllers driver 71.It pckbc 72PC keyboard/mouse controller 73.It sb 74SoundBlaster family audio device driver 75.It wss 76Windows Sound System hardware driver 77.It ym 78Yamaha OPL3-SA3 sound driver 79.El 80.Sh SEE ALSO 81.Xr com 4 , 82.Xr ess 4 , 83.Xr fdc 4 , 84.Xr intro 4 , 85.Xr isa 4 , 86.Xr joy 4 , 87.Xr lpt 4 , 88.Xr npx 4 , 89.Xr pci 4 , 90.Xr pciide 4 , 91.Xr pckbc 4 , 92.Xr sb 4 , 93.Xr wss 4 , 94.Xr ym 4 95.Sh HISTORY 96The 97.Nm 98driver 99appeared in 100.Nx 1.5 . 101.Sh BUGS 102The 103.Nm 104bus provides a different way to attach devices than the real buses 105(e.g., 106.Xr isa 4 ) . 107The reason to use 108.Nm 109instead of the real bus is that some machines have weird routings 110of, e.g., interrupts. The exact information about these things can 111be found in the BIOS, which is why the 112.Nm 113bus has a better chance of succeeding with getting it right. 114.Pp 115Many older BIOS implementations do not support PnP, 116and some newer ones do not follow the standards. 117