Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!usc!apple!portal!cup.portal.com!Chris_F_Chiesa
From: Chris_F_Chiesa@cup.portal.com
Newsgroups: comp.sys.atari.8bit
Subject: Two Questions
Message-ID: <37329@cup.portal.com>
Date: 28 Dec 90 22:00:21 GMT
References: <20892.277b4029@merrimack.edu>
Organization: The Portal System (TM)
Lines: 25

1) What's the most likely reason that a single-sided, single-density,
   Atari-DOS-2.0S-format autoboot diskette, which works on several dif-
   ferent Atari 1050 drives, would NOT work on a SS/SD Percom AT88 drive?
   The Percom makes valiant but unsuccessful attempts to read the disk,
   whereas the 1050's boot right into the software.  I expect you to say
   that the most likely culprit is "head alignment in the Percom," but
   YOU tell ME.

2) Lately I have been experiencing "disappearance" of all peripheral
   devices beyond the first one (D1:) on my SIO daisy-chain.  D2:, for 
   example, will start its motor in response to a DIR D2: command from
   SDX, but no directory (or any other disk-read) data ever reaches
   the computer.  After a while I get only "device not present" and
   "device NAK" statuses no matter what operation I attempt.  The 
   problem goes away if I reseat the SIO cable coming OUT of D1:,
   but occurs regardless of actual cable swapping.  I hypothesize that
   it is the SIO _CONNECTOR ITSELF_ on D1: that is the culprit.  Can
   someone tell me if I've overlooked something, or whether I seem to
   be on the right track?

Thanks for any and all responses; hope you all had a good holiday and
everything!

Chris Chiesa
   Chris_F_Chiesa@cup.portal.com