Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!cica!gatech!udel!mmdf
From: D88.R-WESTMAN@linus.ida.liu.se (Rickard Westman)
Newsgroups: comp.sys.amiga
Subject: Problems with A1000 expansion devices
Message-ID: <20192@louie.udel.EDU>
Date: 21 Jul 89 20:07:30 GMT
Sender: mmdf@udel.EDU
Lines: 35

I've had an XpanderII box with 2 MB of RAM for more than a year now.  Except
for some initial problems caused by a couple of bad RAM chips, it has worked
flawlessly.  However, when I tried to use it together with a 30 MB Alcomp
hard disk, my A1000 started to guru regularly.  One at a time, both devices
work nicely (well, the hard drive is extremely slow, so I will return it
anyway, but apart from that).

The guru meditation numbers are of type 00000003 and 00000008, indicating
address errors and privilege violations.  Typically, they occur after about
ten minutes use, but sometimes much earlier.  The hard drive does not even
need to be turned on to cause these problems, so I guess there might be
something wrong with the pass-thru/interface.

But - I have returned it to where I bought it, and they couldn't find
anything wrong with the interface (but they did replace the controller,
power supply and box - but it is still slow, and makes my Amiga guru...)

I've read in an article by Perry Kivolowitz, that problems like these
could be caused by poor grounding of some chips on the Kickstart RAM
daughterboard, or possibly by PAL devices with weak drive capacity.

Since the motherboard of my Amiga does not *have* this daughterboard
(it is a REV B european type board) I wonder about the second alternative.

Where could I buy replacement PALs?  Is it likely that my problems are
caused by bad PALs at all?


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Richard Westman         !                            !                      !
University of Linkoping ! d88.r-westman@linus.liu.se ! 'Hmm.  In B, Fenby.' !
Sweden                  !                            !                      !
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