1.\" 2.\" Copyright (c) 1996 Jonathan Stone. 3.\" Copyright (c) 2000 Matt Thomas. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by Jonathan Stone. 17.\" 4. The name of the author may not be used to endorse or promote products 18.\" derived from this software without specific prior written permission 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30.\" 31.\" $NetBSD: asc.4,v 1.7 2002/01/15 02:03:42 wiz Exp $ 32.\" 33.Dd April 23, 2000 34.Dt ASC 4 vax 35.Os 36.Sh NAME 37.Nm asc 38.Nd 39VAXstation 4000 SCSI controller 40.Sh SYNOPSIS 41.Cd "asc* at vsbus? csr 0x200c0080" Pq VS4000/60 or VLC 42.Cd "asc* at vsbus? csr 0x25000080" Pq VS4000/9x 43.Cd "asc* at tc?" Pq Not yet supported 44.Cd "scsibus* at asc?" 45.Sh DESCRIPTION 46The 47.Nm 48driver provides support for the 49.Tn NCR 5053c94-based SCSI host adapter 51on the VAXstation 4000 series, and for the PMAZ-AA and related 52TURBOchannel SCSI adapter option boards (also on the VAXstation 534000 series models which include support for the TURBOchannel 54adapter. 55.Sh CONFIGURATION 56The 57.Nm 58driver supports the following 59.Sy flags 60for use in 61.Xr config 8 62files: 63.Pp 64.Bl -tag -compact -width "bits 8-15:" 65.It bits 0-7 : 66disable disconnect/reselect for the corresponding 67.Tn SCSI 68target 69.It bits 8-15 : 70disable synchronous negotiation for 71.Tn SCSI 72target 73.El 74.Pp 75.Qq Target 76is synonymous with 77.Tn SCSI 78ID number. 79.Pp 80Note that 81.Tn SCSI 82tape drives should be allowed to perform disconnect/reselect or performance 83will suffer. 84.Sh SEE ALSO 85.Xr cd 4 , 86.Xr ch 4 , 87.Xr esp 4 , 88.Xr intro 4 , 89.Xr scsi 4 , 90.Xr sd 4 , 91.Xr st 4 92.Sh HISTORY 93The 94.Nm 95driver first appeared in 96.Nx 1.5 . 97