58 lines
2.2 KiB
Groff
58 lines
2.2 KiB
Groff
.\" $NetBSD: iobus.4,v 1.3 2003/05/06 10:46:42 jmmv Exp $
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.\"
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.\" Copyright (c) 2000 Ben Harris.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd April 25, 2001
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.Os
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.Dt IOBUS 4 acorn26
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.Sh NAME
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.Nm iobus
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.Nd Device driver for the I/O bus
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.Sh SYNOPSIS
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.Cd iobus0 at root
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.Sh DESCRIPTION
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Systems supported by
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.Nx Ns /acorn26
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have a 16-bit I/O bus connected to the CPU bus by bi-directional buffers
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managed by the IOC. The
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.Nm
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driver provides support for this bus. All
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.Nx Ns /acorn26
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kernels need this driver.
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.Pp
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On Archimedes systems, the only device attached at
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.Nm
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is the IOC. While MEMC podules are physically
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.Nm
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devices, they're logically treated as being attached to the IOC. On
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machines with an IOEB, the Universal Peripheral Controller chip is also
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attached at
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.Nm .
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.Sh SEE ALSO
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.\" .Xr ioc 4 ,
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.Xr podulebus 4
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.\" .Xr upc 4
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