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From: arxt@quads.uchicago.edu (patrick  palmer)
Newsgroups: comp.sys.amiga,comp.sys.amiga.hardware
Subject: A2000 internal floppy jumper settings?
Keywords: floppy, internal, jumper
Message-ID: <1990Nov18.195150.13013@midway.uchicago.edu>
Date: 18 Nov 90 19:51:50 GMT
Sender: news@midway.uchicago.edu (News Administrator)
Organization: University of Chicago
Lines: 26

I have added a second internal floppy to my A2000, and I would like to
have the new one be df0: and the old be df1: (it is acting up, so I
want it only on rare occasions).

Either drive works fine as df0:.  (I am using the new one as df1: now,
so the system works fine with two floppys - after putting a jumper on
the motherboard.)  I need to know the jumper settings to make the original
drive work as df1:.

The drive is a Matsushita, JU-253 -02T is the part number, I think
(there are lots of numbers).  Looking from the back, there are 10
pins in the jumper area, 4 are currently jumpered and it works as df0:
when plugged into the end connector on the drive cable.  It looks
like:
             .  .  .  .  .    < these are pins
             l           l    < these represent the current location of
             l           l       the jumpers.
             .  .  .  .  .    < bottom row of pins

I would be very grateful if someone could tell me how to set the jumpers to
make it function as df1:

My drive cable has the twist in it to distinguish df0: and df1:, at least
that is what I think it is for.  df0: is always at the end.

Pat Palmer (email: palmer@oddjob.uchicago.edu)