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From: jdeitch@umiami.ir.miami.edu (Jonathan Deitch)
Newsgroups: comp.sys.apple2
Subject: //c GIF problems
Message-ID: <1991May3.195637.9581@umiami.ir.miami.edu>
Date: 3 May 91 23:56:37 GMT
Organization: Univ of Miami IR
Lines: 23

Ok, I've got a tricky hardware problem that I just can't figure out :

My //c works perfectly fine.  It passes Apple's Apple II Diagnostics v3.0
without error, even when I set it to loop and let it run for a few hours.

When I run IIGIF v1.0, and start to unpack a GIF picture, it gets a few lines
into the picture and then the screen clears and "MMU" appears in the middle
of the screen.  Now I know this is supposed to mean that the MMU is bad, but
nothing I can do can prove the MMU to be bad.  I've even swapped the chip for
a new one and it still goes bonkers.  It's not anything in my system.  I un-
hooked everything and even took my memory card out.  Then I tried four
different versions of ProDOS 8.  Then I tried a different download of the
program.  Nothing works.

Anyone got any ideas ?  I'm fresh out.

thanks,

- Jonathan 
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