Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!turnkey!jackv
From: jackv@turnkey.tcc.com (Jack F. Vogel)
Newsgroups: comp.periphs.scsi
Subject: 1542B SCSI TIMEOUT problem
Message-ID: <1991Feb05.211828.1405@turnkey.tcc.com>
Date: 5 Feb 91 21:18:28 GMT
Reply-To: jackv@turnkey.TCC.COM (Jack F. Vogel)
Organization: Turnkey Computer Consultants, Westchester, CA
Lines: 19

I am having a problem that I hope someone else out there has seen and solved.
I have a 25Mhz Atronics 386 system, I just purchased an Adaptec 1542B and
Maxtor 200Meg drive. When the system boots the Adaptec bios correctly finds
LUN 0 Target 0 and says its installed as C:, however running the onboard
diagnostics all commands are getting a TIMEOUT failure, it doesn't get
drive information, won't verify or format. Initially I thought there was
a problem with the drive and had it replaced, no go, the new drive had the
same problem. Then I put the adaptor and drive into a 10Mhz 286 system and
it worked fine! So there must be something relating to the speed of the
386 system that is causing the failure. In case it matters the bus is already
throttled to 8Mhz. Is there any magic with jumpers or otherwise that I can
do to get around the problem??

Any help or suggestions appreciated!!

-- 
Jack F. Vogel			jackv@locus.com
AIX370 Technical Support	       - or -
Locus Computing Corp.		jackv@turnkey.TCC.COM