1.\" 2.\" Copyright (c) 1994 Christian E. Hopps 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 Christian E. Hopps. 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: zssc.4,v 1.9 2001/09/11 22:52:55 wiz Exp $ 31.\" 32.Dd August 31, 1994 33.Os 34.Dt ZSSC 4 amiga 35.Sh NAME 36.Nm zssc 37.Nd Zeus low level SCSI interface 38.Sh SYNOPSIS 39.Cd "zssc0 at zbus0" 40.Sh DESCRIPTION 41The 42.Tn Amiga 43architecture uses a common machine independent scsi sub-system 44provided in the kernel source. The machine independent 45drivers that use this code access the hardware through a 46common interface. (see 47.Xr scsibus 4 ) 48This common interface interacts with a machine dependent interface, 49such as 50.Nm zssc , 51which then handles the hardware specific issues. 52.Pp 53The 54.Nm 55interface handles things such as DMA and interrupts as well as 56actually sending commands, negotiating synchronous or asynchronous 57transfers and handling disconnect/reconnect of SCSI targets. 58The hardware that 59.Nm 60uses is based on the NCR53c710 SCSI chip. 61.Sh DIAGNOSTICS 62.Bl -diag 63.It zssc%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x 64The scsi operation %s was aborted due to error. Dstat, sstat and 65sbcl are registers within the NCR53c710 SCSI chip. 66.It siop id %d reset\n" 67The NCR53c710 SCSI chip has been reset and configure at id %d. 68.It SIOP interrupt: %x sts %x msg %x sbcl %x 69The NCR53c710 SCSI chip has interrupted unexpectedly. 70.It SIOP: SCSI Gross Error 71The NCR53c710 SCSI chip has indicated that it is confused. 72.It SIOP: Parity Error 73The NCR53c710 SCSI chip has indicated that it has detected a 74parity error on the SCSI bus. 75.El 76.Sh SEE ALSO 77.Xr scsibus 4 78.Sh HISTORY 79The 80.Nm 81interface first appeared in 82.Nx 1.0 83