1.\" $NetBSD: pnpbios.4,v 1.11 2002/09/27 22:31:45 wiz Exp $ 2.\" 3.\" Copyright (c) 1999-2002 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 September 27, 2002 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.Pp 47.Cd options PNPBIOSVERBOSE 48.Cd options PNPBIOSDEBUG 49.Sh INTRODUCTION 50.Nm 51provides support for finding and attaching devices by 52extracting information from the PnP BIOS of a machine. 53.Sh SUPPORTED DEVICES 54.Nx 55includes the following 56.Nm 57drivers, sorted by driver name: 58.Pp 59.Bl -tag -width speaker -offset indent -compact 60.It com 61serial communications interface 62.It ess 63ESS Technology AudioDrive family audio device driver 64.It fdc 65floppy controller 66.It joy 67game controller 68.It lpt 69parallel port driver 70.It npx 71math coprocessor 72.It pciide 73PCI IDE controllers driver 74.It pckbc 75PC keyboard/mouse controller 76.It sb 77SoundBlaster family audio device driver 78.It wss 79Windows Sound System hardware driver 80.It ym 81Yamaha OPL3-SA3 sound driver 82.El 83.Sh SEE ALSO 84.Xr com 4 , 85.Xr ess 4 , 86.Xr fdc 4 , 87.Xr intro 4 , 88.Xr isa 4 , 89.Xr joy 4 , 90.Xr lpt 4 , 91.Xr npx 4 , 92.Xr pci 4 , 93.Xr pciide 4 , 94.Xr pckbc 4 , 95.Xr sb 4 , 96.Xr wss 4 , 97.Xr ym 4 98.Sh HISTORY 99The 100.Nm 101driver 102appeared in 103.Nx 1.5 . 104.Sh BUGS 105The 106.Nm 107bus provides a different way to attach devices than the real buses 108(e.g., 109.Xr isa 4 ) . 110The reason to use 111.Nm 112instead of the real bus is that some machines have weird routings 113of, e.g., interrupts. The exact information about these things can 114be found in the BIOS, which is why the 115.Nm 116bus has a better chance of succeeding with getting it right. 117.Pp 118Many older BIOS implementations do not support PnP, 119and some newer ones do not follow the standards. 120