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From: hyc@math.lsa.umich.edu (Howard Chu)
Newsgroups: comp.periphs.scsi,comp.sys.amiga,comp.sys.atari.st
Subject: Re: [comp.sys.amiga...] Conner CP340 specs
Message-ID: <11027@stag.math.lsa.umich.edu>
Date: 19 Feb 90 05:50:36 GMT
References: <11021@stag.math.lsa.umich.edu>
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Reply-To: hyc@math.lsa.umich.edu (Howard Chu)
Organization: University of Michigan Math Dept., Ann Arbor
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In article <11021@stag.math.lsa.umich.edu> dc@dcpc.UUCP (Don Curtis) writes:
%Original-posting-by: dc@dcpc.UUCP (Don Curtis)
%Original-subject: Conner CP340 specs
%Reposted-by: emv@math.lsa.umich.edu (Edward Vielmetti)
%	I got the Conner Technical Manual today...here's the official
%	word on both drive parameters and jumper settings:
[deleted]
%	While the drive DID show up as SCSI 0 with E2-4 OUT, it was VERY
%	flakey.  It would only boot when it felt like it, and would go
%	off-line at odd times for no apparent reason.  Also, doing an
%	ASSIGN command (NOT info command) showed DH2: thru DH8: as 
%	existing (with only 1 drive attached to the SCSI bus).  Two drives
%	on the cable would not work at all...either neither of them showed
%	up...or both showed up as the same drive.  Yes, they were jumpered
%	for different ID numbers.
%
This sounds familiar, but I'm surprised that a mere jumper change fixed the
problem. I'd heard that when the controller on the Conner drive picked up
a query for any device other than its own number, it would park itself. I'd
also heard that the fix required replacing the conner scsi controller.

%	Based on the message by Darrin (???) earlier...I reversed the sense
%	of the above SELECT settings (that is...changed the "out" to "in"
%	and vice versa) and put all jumpers IN.  Drive again showed up as
%	SCSI ID 0 and this time, ASSIGN only showed DH2: as existing.  The
%	flakieness was GONE...the drive works perfectly.  Adding a 2nd drive
%	works fine also.

Thanks for the info. These are really great articles, guys. 
--
  -- Howard Chu @ University of Michigan