1.\" 2.\" Copyright (c) 1996 Jonathan Stone. 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. All advertising materials mentioning features or use of this software 14.\" must display the following acknowledgement: 15.\" This product includes software developed by Jonathan Stone. 16.\" 4. The name of the author may not be used to endorse or promote products 17.\" derived from this software without specific prior written permission 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" $NetBSD: sii.4,v 1.10 2001/09/21 09:11:48 gmcgarry Exp $ 31.\" 32.Dd August 26, 2001 33.Dt SII 4 pmax 34.Os 35.Sh NAME 36.Nm sii 37.Nd 38SII SCSI adaptor 39.Sh SYNOPSIS 40.Cd "sii* at ibus0 addr ? 41.Cd "scsibus* at sii?" 42.Sh DESCRIPTION 43The 44.Nm 45driver provides support for the 46.Tn DEC 47SII SCSI adaptor ASIC used in 48the DECstation 2100, 3100, and 5100, and in the VAXstation 3100. 49.Pp 50The 51.Nm 52is a medium-performance implementation of the SCSI-I common command set 53supporting synchronous and asynchronous SCSI devices. 54.Pp 55The SII cabling is unusual: the bulkhead connector is very similar 56to a standard submicro wide SCSI-II connector, but has the other gender. 57.Pp 58The 59.Nm 60chip only supports DMA to or from a fixed window in memory. 61The driver uses this "window" area as a bounce buffer, copying data 62to and from the DMA region. 63.Sh SEE ALSO 64.Xr cd 4 , 65.Xr ch 4 , 66.Xr ibus 4 , 67.Xr intro 4 , 68.Xr sd 4 , 69.Xr st 4 70.Sh HISTORY 71The 72.Nm 73driver first appeared in 74.Bx 4.4 . 75