*BSD News Article 6073


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Newsgroups: comp.unix.bsd
Path: sserve!manuel!munnari.oz.au!uniwa!DIALix!mycroft.DIALix.oz.au!philsuth
From: philsuth@mycroft.DIALix.oz.au (Phil Sutherland)
Subject: Re: AHA1542B vs Sysgen SC4000 controller under BSD386
References: <1ao4umINNaua@network.ucsd.edu>
Message-ID: <1992Oct6.011314.7680@mycroft.DIALix.oz.au>
Reply-To: philsuth@DIALix.oz.au
Date: Tue, 6 Oct 92 01:13:14 GMT
Lines: 24

brian@ucsd.edu (Brian Kantor) writes:

>I managed to score a Sysgen SC4000 SCSI-to-QIC-02 controller, an Adaptec
>Stand-Alone-Tape-Controller QIC-02-to-QIC-36 board, and an Archive 5945C 
>drive.  This bizarre combination is what Sun used to use in their really
>old (Sun-2/68010 days) tape backup boxes.

>When I connect this mess up to my Adaptec controller and try to bood
>386BSD with Julian's SCSI package, the error light on the SC4000 comes
>on, and the computer just keeps telling me that command timed out.
>The light on the Adaptec just stays on.

Your problem may be that the early versions of SCSI did not support
SCSI bus parity. I believe (though I don't have a manual close at
hand) that the 1542B at least can be jumpered to disable SCSI parity
checking. Note that you'll have to do this for all devices connected
to that SCSI bus, including any disk drives etc.

phil


-- 
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Phil Sutherland        Perth, Western Australia    philsuth@DIALix.oz.au