Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucsd!usc!elroy!peregrine!ccicpg!cci632!rit!ultb!clf3678
From: clf3678@ultb.UUCP (C.L. Freemesser)
Newsgroups: comp.sys.atari.st
Subject: Re: Fujitsu Drive Problem
Summary: Simple fix
Message-ID: <951@ultb.UUCP>
Date: 20 Jun 89 23:55:14 GMT
References: <741@lilink.UUCP>
Reply-To: clf3678@ultb.UUCP (C.L. Freemesser (709ITP))
Distribution: usa
Organization: Rochester Institute of Technology, Information Systems
Lines: 29

In article <741@lilink.UUCP> joeg@lilink.UUCP (Joe Gelman) writes:
>
>      I've installed a Fujitsu 720K DS drive in place of the standard Atari
>SS drive. (Direct swap into Atari's case).  The drive works fine except for
>it's failure to detect a disk change unless it's write-protected. 
>
>      I traced the problem to a different signalling scheme at the pins
>responsible for telling the ST about the swap. Does anyone have the fix for
>this, or have I acquired the wrong drive for use with the ST?
>
>
>-- 
>PO Box:     rutgers!lilink!joeg               *simple, but will it work?*
>=========================================================================
>LILINK Public Access Xenix  (516) 872-2137/2138/2349 1200/2400 Login: new

Run a jumper between pins 2 and 28 of the 34 pin connector on the drive.
This SHOULD fix the problem.  If you start to get WRITE PROTECT warning
boxes after this jumper is connected, then you are out of luck.  The
signals aren't strong enough when the two lines are connected.  I have
this problem on my Teac.

TOS 1.4 fixes this problem, so you COULD wait until it comes out.


Chris Freemesser, Rochester Institute of Technology | What I like :
BITNET: %clf3678@RITVAX                             | 1) My Atari ST
USENET: Just reply and hope it gets through         | 2) My '77 Mercury
"Another brilliant mind ruined by higher education" | 3) Coke Classic