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Path: utzoo!linus!philabs!seismo!hao!hplabs!sri-unix!RMS.G.EH%MIT-OZ@mit-mc
From: RMS.G.EH%MIT-OZ%mit-mc@sri-unix.UUCP
Newsgroups: net.micro.cpm
Subject: Problem with Heath Z37 controller and Tandon TM-100-4  drives
Message-ID: <2291@sri-arpa.UUCP>
Date: Fri, 17-Jun-83 19:05:00 EDT
Article-I.D.: sri-arpa.2291
Posted: Fri Jun 17 19:05:00 1983
Date-Received: Mon, 20-Jun-83 04:25:19 EDT
Lines: 17

From:  Edward Huang 

Hello,
When running Heath/Zenith CP/M with the Z37-89 DD controller
and Tandon TM-100-4 drives, I often get BDOS SELECT errors.
Notice that this Tandon drive was brought from an outside
dealer NOT from Heath [Heath jacks up the price on outside
things they sell in their stores]. The drive is rated for 3ms
seek - those Bdos error SELECT happen during warm boot @ 6ms
When I increased the speed to 12 ms step, the errors went away
as well as all those soft errors I didnt know about. (see
SECERR counter in Heath BIOS listing - they give you # of
soft errors and retries)  Does any-one know what is wrong??
Is it because I used a non-Heath drive or what?
Thank you very much,
-Ed
RMS.G.EH@MIT-OZ via MIT-MC