Re: Apple IIc upgrade left "DISKII" not working????????

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Article #142

#142

From: David.Empson
Date: Wed, 14 Oct 1992 09:04

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In article <1992Oct13.175146.14700@ll.mit.edu> yasu@ll.mit.edu (Alan Yasutovich) writes:
>
> [Apple IIc with updated logic board scrubbing disks]
>
> 	They said that the apple works fine, but when the DISKII is
> 	put on, they can read it, but not write to it.  The DISKII
> 	works on an apple IIe, so the disk drive is OK.
> 
> 	The reason given for this is that the upgrade board (rev 1
> 	to rev 2) has a different disk controller.

Rubbish.  All versions of the IIc have an IWM.  The second revision
had more ROM to support UniDisk 3.5 and other SmartPort devices, but
there was no change to the drive hardware.  There CERTAINLY wasn't any
compatibility problem with the internal 5.25" drive!

I would say that the updated logic board is also damaged.  Another
possibility is the drive to motherboard cable, or the IIc's power
supply (it could be generating +12 or -12 incorrectly, for example).

-- 
David Empson

Internet: David.Empson@bbs.actrix.gen.nz    EMPSON_D@kosmos.wcc.govt.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand

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Newsgroups: de.comp.sys.apple,comp.sys.apple2
Path: arc1-ca.pugleaf.net!sparky!uunet!comp.vuw.ac.nz!actrix!David.Empson
From: David.Empson@bbs.actrix.gen.nz
Subject: Re: Apple IIc upgrade left "DISKII" not working????????
Organization: Actrix Information Exchange
Date: Wed, 14 Oct 1992 09:04:02 GMT
Message-ID: <1992Oct14.090402.8837@actrix.gen.nz>
References: <1992Oct13.175146.14700@ll.mit.edu>
Sender: David.Empson@actrix.gen.nz (David Empson)
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