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+.\"	$NetBSD: osiop.4,v 1.7 2014/02/24 07:23:40 skrll Exp $
+.\"
+.\" Copyright (c) 2001 Izumi Tsutsui.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd May 12, 2001
+.Dt OSIOP 4
+.Os
+.Sh NAME
+.Nm osiop
+.Nd Symbios/NCR 53C710 SCSI driver
+.Sh SYNOPSIS
+.Ss arc
+.Cd "osiop* at jazzio? flags 0x00000"
+.Ss ews4800mips
+.Cd "osiop* at sbdio? flags 0x00000"
+.Ss hppa
+.Cd "osiop0 at gsc? flags 0x00000"
+.Ss mvme68k
+.Cd "osiop0 at pcctwo? ipl 2"
+.Pp
+.Cd "scsibus* at osiop?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for the
+.Tn Symbios/NCR
+53C710
+.Tn SCSI
+controller chip.
+.Pp
+For the
+.Tn Symbios/NCR
+53C700
+.Tn SCSI
+host adapters, use the
+.Xr oosiop 4
+driver.
+.Pp
+For the
+.Tn Symbios/NCR
+53C8xx
+.Tn PCI
+.Tn SCSI
+host adapters, use the
+.Xr siop 4
+or
+.Xr esiop 4
+driver.
+.Sh CONFIGURATION
+The
+.Nm
+driver supports the following
+.Sy flags
+for use in
+.Xr config 1
+files:
+.Pp
+.Bl -tag -compact -width "bits 8-15:"
+.It bits 0-7 :
+disable disconnect/reselect for the corresponding
+.Tn SCSI
+target
+.It bits 8-15 :
+disable synchronous negotiation for
+.Tn SCSI
+target
+.It bits 16 :
+disable DMA interrupts
+.El
+.Pp
+.Qq Target
+is synonymous with
+.Tn SCSI
+ID number.
+.Pp
+Note that
+.Tn SCSI
+tape drives should be allowed to perform disconnect/reselect or performance
+will suffer.
+.\" .Sh BUGS
+.\" Neither
+.\" .Tn DMA
+.\" or synchronous data transfers are currently supported.
+.Sh SEE ALSO
+.Xr cd 4 ,
+.Xr ch 4 ,
+.Xr esiop 4 ,
+.Xr intro 4 ,
+.Xr oosiop 4 ,
+.Xr scsi 4 ,
+.Xr sd 4 ,
+.Xr siop 4 ,
+.Xr ss 4 ,
+.Xr st 4 ,
+.Xr uk 4 ,
+.Xr scsipi 9
+.Sh HISTORY
+.Nm
+driver first appeared in
+.Nx 1.6 .
+.Pp
+The original
+.Tn NCR
+53C710
+driver appeared in
+.Nx
+1.0 amiga port, and Izumi Tsutsui
+.Aq tsutsui@NetBSD.org
+modified the driver and made it machine-independent.