.\"	$OpenBSD: nubus.4,v 1.1 2005/02/27 22:11:03 martin Exp $
.\"
.\" Copyright (c) 2004 Martin Reindl <martin@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.
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.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.Dd February 24, 2005
.Dt NUBUS 4 mac68k
.Os
.Sh NAME
.Nm nubus
.Nd Mac68k nubus support and drivers
.Sh SYNOPSIS
.Cd "nubus0 at mainbus?"
.Sh DESCRIPTION
The
.Nm
is a simple backplane bus found on numerous mac68k machines.
Only extension boards are supported.
The
.Nm
90 IEEE Std 1196-1987 defines the bus protocol as well as the electrical and
mechanical properties of the extension slots.
.Sh SEE ALSO
.Xr ae 4 ,
.\" .Xr macvid 4 ,
.Xr sn 4
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 1.2 .