1.\" 2.\" Copyright (c) 1994 Christopher G. Demetriou 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. All advertising materials mentioning features or use of this software 14.\" must display the following acknowledgement: 15.\" This product includes software developed by Christopher G. Demetriou. 16.\" 3. The name of the author may not be used to endorse or promote products 17.\" derived from this software without specific prior written permission 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" $Id: intro.4,v 1.1 1994/02/20 09:41:44 cgd Exp $ 31.\" 32.Dd 33.Dt INTRO 4 i386 34.Os 35.Sh NAME 36.Nm intro 37.Nd introduction to special files and hardware support 38.Sh DESCRIPTION 39This section describes the special files, related driver functions, 40and networking support 41available in the system. 42In this part of the manual, the 43.Tn SYNOPSIS 44section of 45each configurable device gives a sample specification 46for use in constructing a system description for the 47.Xr config 8 48program. 49The 50.Tn DIAGNOSTICS 51section lists messages which may appear on the console 52and/or in the system error log 53.Pa /var/log/messages 54due to errors in device operation; 55see 56.Xr syslogd 8 57for more information. 58.Pp 59This section contains both devices 60which may be configured into the system 61and network related information. 62The networking support is introduced in 63.Xr netintro 4 . 64.Sh DEVICE SUPPORT 65This section describes the hardware supported on the i386 66(PC-clone) platform. 67Software support for these devices comes in two forms. A hardware 68device may be supported with a character or block 69.Em device driver , 70or it may be used within the networking subsystem and have a 71.Em network interface driver . 72Block and character devices are accessed through files in the file 73system of a special type; see 74.Xr mknod 8 . 75Network interfaces are indirectly accessed through the interprocess 76communication facilities provided by the system; see 77.Xr socket 2 . 78.Pp 79A hardware device is identified to the system at configuration time 80and the appropriate device or network interface driver is then compiled 81into the system. When the resultant system is booted, the 82autoconfiguration facilities in the system probe for the device 83and, if found, enable the software support for it. 84If a device does not respond at autoconfiguration 85time it is not accessible at any time afterwards. 86To enable a device which did not autoconfigure, 87the system must be rebooted. 88.Pp 89The autoconfiguration system is described in 90.Xr autoconf 4 . 91A list of the supported devices is given below. 92.Sh SEE ALSO 93.Xr intro 4 , 94.Xr autoconf 4 , 95.Xr config 8 . 96.Sh LIST OF DEVICES 97The devices listed below are supported in this incarnation of 98the system. Devices are indicated by their functional interface. 99Not all supported devices are listed. 100.Pp 101.Bl -tag -width speaker -offset indent -compact 102.It com 103NS8250-, NS16450-, and NS16550-based asynchronous serial 104communications device interface 105.It cy 106Cyclades Cyclom-4Y, -8Y, and -16Y asynchronous serial communications 107device interface 108.It ed 109Western Digital/SMC 80x3 and Ultra, 3Com 3c503, and NE1000 and 2000 110ethernet interface 111.It ep 1123Com Etherlink III (3c5x9) ethernet interface 113.It lms 114Logitech-style bus mouse device interface 115.It lpt 116Parallel port device interface 117.It mem 118Main memory interface 119.It mms 120Microsoft-style bus mouse device interface 121.It npx 122Numeric Processing Extension coprocessor and emulator 123.It pms 124PS/2 auxiliary port mouse device interface 125.It speaker 126console speaker device interface 127.El 128.Sh HISTORY 129The 130.Tn i386 131.Nm intro 132appeared in 133.Nx 0.9a . 134