1.\" 2.\" Copyright (c) 1997 Colin Wood 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 Colin Wood 16.\" for the NetBSD Project. 17.\" 4. 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.\" $NetBSD: mainbus.4,v 1.4 2002/01/15 01:47:38 wiz Exp $ 32.\" 33.Dd July 2, 1997 34.Dt MAINBUS 4 mac68k 35.Os 36.Sh NAME 37.Nm mainbus 38.Nd Mac68k main processor bus device 39.Sh SYNOPSIS 40.Cd "mainbus0 at root" 41.Sh DESCRIPTION 42The 43.Nm 44interface serves as an abstraction used by the autoconfiguration 45system to help find and attach busses 46.Pq e.g. the Tn NuBus expansion bus 47or devices 48.Pq e.g. the math coprocessor 49connected to the 50.Tn Macintosh 51main processor bus. 52.Sh DIAGNOSTICS 53.Bl -diag -compact 54.It mainbus0 (root). 55This is the normal autoconfiguration message indicating that the 56main processor bus has been found. 57.El 58.Sh SEE ALSO 59.Xr autoconf 4 , 60.Xr obio 4 61.Sh HISTORY 62The 63.Nm 64first appeared in 65.Nx 1.2 . 66