1.\" $NetBSD: mainbus.4,v 1.4 2017/02/17 22:24:47 christos Exp $ 2.\" 3.\" Copyright (c) 1999 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Steve C. Woodford. 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.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd February 17, 2017 31.Dt MAINBUS 4 mvme68k 32.Os 33.Sh NAME 34.Nm mainbus 35.Nd MVME68K main processor bus device 36.Sh SYNOPSIS 37.Cd "mainbus0 at root" 38.Sh DESCRIPTION 39The 40.Nm 41interface serves as an abstraction used by the autoconfiguration 42system to help find and attach busses 43.Pq e.g. the Tn VME bus 44or devices 45.Pq e.g. the PCC chip 46connected to Motorola 47.Tn MVME single board computers' 48main processor bus. 49.Sh DIAGNOSTICS 50.Bl -diag -compact 51.It mainbus0 (root). 52This is the normal autoconfiguration message indicating that the 53main processor bus has been found. 54.El 55.Sh SEE ALSO 56.Xr mvme68k/autoconf 4 , 57.Xr mvme68k/pcc 4 , 58.Xr mvme68k/pcctwo 4 59