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.\" 3. 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 1.2 1997/10/13 11:23:58 lukem Exp $ 31.\" 32.Dd August 6, 1996 33.Dt SII 4 pmax 34.Os NetBSD 1.2 35.Sh NAME 36.Nm sii 37.Nd 38SII scsi adaptor 39.Sh SYNOPSIS 40.Cd "sii0 at mainbus" 41.Sh DESCRIPTION 42THe 43.Nm 44driver provides support for the 45.Tn DEC 46SII scsi adaptor ASIC used in 47the DECstation 2100, 3100, and 5100, and in the VAXstation 3100. 48.Pp 49The 50.Nm 51is a medium-performance implementation of the SCSI-I common set 52supporting synchronous and asychronous SCSI devices. The SII cabling 53is unusual: the bulkhead connector is very similar to a standard 54submicro wide SCSI-II connector, but has the other gender. 55The 56.Nm 57chip only supports DMA to or from a fixed window in memory. 58The driver use this area as a bounce buffer, copying data to and 59from the DMA region. 60.Sh SEE ALSO 61.Xr intro 4 , 62.Xr rz 4 , 63.Xr tz 4 , 64.Xr sd 4 , 65.Xr st 4 , 66.Xr cd 4 , 67.Xr ch 4 . 68.Sh HISTORY 69The 70.Nm 71driver 72first appeared in 73.Bx 4.4 . 74.Sh BUGS 75The 76.Nm 77driver only supports the 78.Nm oldscsibus 79higher-level layer, and the 80.Nm rz 81and 82.Nm tz 83devices, which first appeared in 84.Bx 4.4 /pmax. 85It should be re-written to support the 86.Nm scsibus 87machine-independent higher-level SCSI layer and the 88.Nm sd , 89.Nm st , 90and 91.Nm cd 92drivers. This is 93.Ud . 94 95 96 97