97 lines
2.9 KiB
Groff
97 lines
2.9 KiB
Groff
.\"
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.\" Copyright (c) 1996 Jonathan Stone.
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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. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Jonathan Stone.
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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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.\" $NetBSD: sii.4,v 1.2 1997/10/13 11:23:58 lukem Exp $
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.\"
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.Dd August 6, 1996
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.Dt SII 4 pmax
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.Os NetBSD 1.2
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.Sh NAME
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.Nm sii
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.Nd
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SII scsi adaptor
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.Sh SYNOPSIS
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.Cd "sii0 at mainbus"
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.Sh DESCRIPTION
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THe
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.Nm
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driver provides support for the
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.Tn DEC
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SII scsi adaptor ASIC used in
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the DECstation 2100, 3100, and 5100, and in the VAXstation 3100.
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.Pp
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The
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.Nm
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is a medium-performance implementation of the SCSI-I common set
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supporting synchronous and asychronous SCSI devices. The SII cabling
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is unusual: the bulkhead connector is very similar to a standard
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submicro wide SCSI-II connector, but has the other gender.
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The
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.Nm
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chip only supports DMA to or from a fixed window in memory.
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The driver use this area as a bounce buffer, copying data to and
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from the DMA region.
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.Sh SEE ALSO
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.Xr intro 4 ,
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.Xr rz 4 ,
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.Xr tz 4 ,
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.Xr sd 4 ,
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.Xr st 4 ,
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.Xr cd 4 ,
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.Xr ch 4 .
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.Sh HISTORY
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The
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.Nm
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driver
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first appeared in
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.Bx 4.4 .
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.Sh BUGS
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The
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.Nm
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driver only supports the
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.Nm oldscsibus
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higher-level layer, and the
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.Nm rz
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and
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.Nm tz
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devices, which first appeared in
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.Bx 4.4 /pmax.
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It should be re-written to support the
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.Nm scsibus
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machine-independent higher-level SCSI layer and the
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.Nm sd ,
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.Nm st ,
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and
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.Nm cd
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drivers. This is
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.Ud .
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