1994-09-19 21:40:43 +04:00
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.\"
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.\" Copyright (c) 1994 Christian E. Hopps
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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 Christian E. Hopps.
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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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1997-10-13 15:21:19 +04:00
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.\" $NetBSD: zssc.4,v 1.4 1997/10/13 11:22:09 lukem Exp $
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1994-09-19 21:40:43 +04:00
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.\"
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.Dd August 31, 1994
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.Os NetBSD 1.0
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.Dt ZSSC 4 amiga
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.Sh NAME
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.Nm zssc
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.Nd Zeus low level SCSI interface
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.Sh SYNOPSIS
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1995-07-04 21:18:10 +04:00
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.Cd "zssc0 at zbus0"
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1994-09-19 21:40:43 +04:00
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.Sh DESCRIPTION
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The
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.Tn Amiga
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architecture uses a common machine independent scsi sub-system
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provided in the kernel source. The machine independent
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drivers that use this code access the hardware through a
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common interface. (see
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.Xr scsibus 4 )
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This common interface interacts with a machine dependent interface,
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such as
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.Nm zssc ,
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which then handles the hardware specific issues.
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.Pp
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The
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.Nm
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interface handles things such as DMA and interrupts as well as
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actually sending commands, negotiating synchronous or asynchronous
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transfers and handling disconnect/reconnect of SCSI targets.
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The hardware that
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.Nm
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uses is based on the NCR53c710 SCSI chip.
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.Sh DIAGNOSTICS
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.Bl -diag
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.It zssc%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x
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1995-08-18 19:10:00 +04:00
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The scsi operation %s was aborted due to error. Dstat, sstat and
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1994-09-19 21:40:43 +04:00
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sbcl are registers within the NCR53c710 SCSI chip.
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.It siop id %d reset\n"
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The NCR53c710 SCSI chip has been reset and configure at id %d.
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.It SIOP interrupt: %x sts %x msg %x sbcl %x
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The NCR53c710 SCSI chip has interrupted unexpectedly.
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.It SIOP: SCSI Gross Error
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The NCR53c710 SCSI chip has indicated that it is confused.
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.It SIOP: Parity Error
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The NCR53c710 SCSI chip has indicated that it has detected a
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parity error on the SCSI bus.
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.Sh SEE ALSO
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.Xr scsibus 4
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.Sh HISTORY
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The
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.Nm
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interface first appeared in
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.Nx 0.9a
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