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-.\"	$OpenBSD: mainbus.4,v 1.1 2007/11/28 16:27:29 jsing Exp $
-.\"
-.\" Copyright (c) 2007 Joel Sing <jsing@openbsd.org>
-.\"
-.\" Permission to use, copy, modify, and distribute this software for any
-.\" purpose with or without fee is hereby granted, provided that the above
-.\" copyright notice and this permission notice appear in all copies.
-.\"
-.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-.\"
-.Dd $Mdocdate: November 28 2007 $
-.Dt MAINBUS 4 sgi
-.Os
-.Sh NAME
-.Nm mainbus
-.Nd SGI main processor bus device
-.Sh SYNOPSIS
-.Cd "mainbus0 at root"
-.Cd "cpu* at mainbus0"
-.Cd "macebus0 at mainbus0"
-.Cd "gbe0 at mainbus0"
-.Sh DESCRIPTION
-The
-.Nm
-interface serves as an abstraction used by the autoconfiguration system to help
-find and attach buses or devices connected to the main processor bus.
-.Pp
-In SGI O2 machines,
-.Nm
-corresponds to the CRIME (CPU, Rendering, Interconnect and Memory Engine) bus
-which acts as a bridge between the CPU, main memory, MACE (Multimedia,
-Audio and Communications Engine) bus, Video Image Compression Engine (VICE)
-and Graphics Back End (GBE).
-.Sh SEE ALSO
-.Xr autoconf 4 ,
-.Xr gbe 4 ,
-.Xr intro 4 ,
-.Xr macebus 4