1.\" $OpenBSD: intro.4,v 1.83 2013/06/29 16:57:33 jmc Exp $ 2.\" 3.\" Copyright (c) 1994 Christopher G. Demetriou 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. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by Christopher G. Demetriou. 17.\" 3. The name of the author may not be used to endorse or promote products 18.\" derived from this software without specific prior written permission 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30.\" 31.Dd $Mdocdate: June 29 2013 $ 32.Dt INTRO 4 i386 33.Os 34.Sh NAME 35.Nm intro 36.Nd introduction to special files and hardware support 37.Sh DESCRIPTION 38The manual pages in section 4 describe the special files, 39related driver functions, and networking support 40available in the system. 41In this part of the manual, the SYNOPSIS section of 42each configurable device gives a sample specification 43for use in constructing a system description for the 44.Xr config 8 45program. 46The DIAGNOSTICS section lists messages which may appear on the console 47and/or in the system error log 48.Pa /var/log/messages 49due to errors in device operation; 50see 51.Xr syslogd 8 52for more information. 53.Pp 54This section contains both devices 55which may be configured into the system 56and network related information. 57The networking support is introduced in 58.Xr netintro 4 . 59.Sh DEVICE SUPPORT 60This section describes the hardware supported on the i386 61(PC-clone) platform. 62Software support for these devices comes in two forms. 63A hardware device may be supported with a character or block 64.Em device driver , 65or it may be used within the networking subsystem and have a 66.Em network interface driver . 67Block and character devices are accessed through files in the file 68system of a special type; see 69.Xr mknod 8 . 70Network interfaces are indirectly accessed through the interprocess 71communication facilities provided by the system; see 72.Xr socket 2 . 73.Pp 74A hardware device is identified to the system at configuration time 75and the appropriate device or network interface driver is then compiled 76into the system. 77When the resultant system is booted, the autoconfiguration facilities 78in the system probe for the device and, if found, enable the software 79support for it. 80If a device does not respond at autoconfiguration 81time it is not accessible at any time afterwards. 82To enable a device which did not autoconfigure, 83the system will have to be rebooted. 84.Pp 85The autoconfiguration system is described in 86.Xr autoconf 4 . 87.Sh LIST OF DEVICES 88A complete list of available devices is contained within the pages 89describing the system buses and controllers. 90For example, a PCI device would be listed in the 91.Xr pci 4 92man page. 93The following buses and controllers list these devices: 94.Pp 95.Bl -tag -width "cardbus(4)XX" -offset 3n -compact 96.It Xr cardbus 4 97introduction to CardBus support 98.It Xr eisa 4 99introduction to EISA bus support 100.It Xr iic 4 101Inter IC (I2C) bus 102.It Xr isa 4 103introduction to ISA bus support 104.It Xr isapnp 4 105introduction to ISA Plug-and-Play support 106.It Xr onewire 4 1071-Wire bus 108.It Xr pci 4 109introduction to PCI bus support 110.It Xr pcmcia 4 111introduction to PCMCIA (PC Card) support 112.It Xr usb 4 113introduction to Universal Serial Bus support 114.El 115.Sh SEE ALSO 116.Xr autoconf 4 , 117.Xr cpu 4 , 118.Xr config 8 119.Sh HISTORY 120The 121i386 122.Nm intro 123first appeared in 124.Nx 1.0 . 125