Need help w/5 1/4" drive

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Article #39879

#39879

From: Layne K. Jensen
Date: Wed, 27 Dec 1989 16:16

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I have been trying to install a 5 1/4" floppy drive on my 1040ST.  I think
I have done everything that I have seen mentioned in this newsgroup. I removed
the termination resistor pack (and replaced it with 1 K-ohm resistors) and
replaced the drive select pullup resistor with a 1 K-ohm.  I also buffered
the drive select and side select lines coming from the sound chip.

The computer now recognizes the external drive at boot-up, and seems to be
able to read existing files written on other machines, but does not reliably
write or format a disk.

I borrowed a friend's external 3 1/2" disk just to check that the computer
signals are there, and it worked just fine with no problems writing or
formatting.

Any help in solving this problem would be greatly appreciated.

Layne Jensen                           jensen@nosc.MIL
Naval Ocean Systems Center             ...!sdcsvax!noscvax!jensen
San Diego, CA
-- 
Layne Jensen                           jensen@nosc.MIL
Naval Ocean Systems Center             ...!sdcsvax!noscvax!jensen
San Diego, CA

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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!samsung!brutus.cs.uiuc.edu!lll-winken!ncis.tis.llnl.gov!helios.ee.lbl.gov!nosc!cod!jensen
From: jensen@cod.NOSC.MIL (Layne K. Jensen)
Newsgroups: comp.sys.atari.st
Subject: Need help w/5 1/4" drive
Keywords: 5 1/4" floppy
Message-ID: <1732@cod.NOSC.MIL>
Date: 27 Dec 89 16:16:29 GMT
Distribution: na
Organization: Naval Ocean Systems Center, San Diego
Lines: 23