1.\" Copyright (c) 1986, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)intro.4 8.1 (Berkeley) 06/05/93 7.\" 8.Dd 9.Dt INTRO 4 tahoe 10.Os 11.Sh NAME 12.Nm intro 13.Nd introduction to special files and hardware support 14.Sh DESCRIPTION 15This section describes the special files, related driver functions, 16and networking support 17available in the system. 18In this part of the manual, the 19.Tn SYNOPSIS 20section of 21each configurable device gives a sample specification 22for use in constructing a system description for the 23.Xr config 8 24program. 25The 26.Tn DIAGNOSTICS 27section lists messages which may appear on the console 28and in the system error log 29.Pa /var/log/messages 30due to errors in device operation. 31.Sh CCI DEVICE SUPPORT 32Software support for these devices comes in two forms. A hardware 33device may be supported with a character or block 34.Em device driver , 35or it may be used within the networking subsystem and have a 36.Em network interface driver . 37Block and character devices are accessed through files in the file 38system of a special type; see 39.Xr physio 4 40and 41.Xr mknod 8 . 42Network interfaces are indirectly accessed through the interprocess 43communication facilities provided by the system; see 44.Xr socket 2 . 45.Pp 46A hardware device is identified to the system at configuration time 47and the appropriate device or network interface driver is then compiled 48into the system. When the resultant system is booted, the 49autoconfiguration facilities in the system probe for the device 50on the 51.Tn VERSAbus 52and, if found, enable the software 53support for it. If a 54.Tn VERSAbus 55device does not respond at autoconfiguration 56time it is not accessible at any time afterwards. To 57enable a 58.Tn VERSAbus 59device which did not autoconfigure, the system will have to 60be rebooted. 61.Pp 62The autoconfiguration system is described in 63.Xr autoconf 4 . 64.Sh SEE ALSO 65.Xr autoconf 4 , 66.Xr netintro 4 , 67.Xr config 8 68.Sh LIST OF DEVICES 69The devices listed below are supported in this incarnation of 70the system. Devices are indicated by their functional interface. 71If second vendor products provide functionally identical interfaces 72they should be usable with the supplied software. 73.Bf Sy 74(Beware however that we promise the software works 75ONLY with the hardware indicated on the appropriate manual page.) 76.Ef 77.Pp 78.Bl -column cons 79ace ACC 10 Mb/s Ethernet controller 80cons Tahoe console interface 81cy Cypher tape drive interface 82dr Ikon DR-11W controller 83enp 3Com 10 Mb/s Ethernet controller 84ik Evans and Sutherland PS300 interface through an Ikon DR-11W 85 controller 86vd CCI vd mass storage disk controller 87vx CCI vioc terminal multiplexor 88.El 89.Sh HISTORY 90The section 4 91.Nm 92appeared in 93.Bx 4.2 . 94