Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!bonnie.concordia.ca!ccu.umanitoba.ca!umsmit72
From: umsmit72@ccu.umanitoba.ca (Kenneth G. Smith)
Newsgroups: comp.sys.apple2
Subject: Apple II+ Hardware Problem???
Message-ID: <1991Mar27.154406.2521@ccu.umanitoba.ca>
Date: 27 Mar 91 15:44:06 GMT
Sender: umsmit72@ccu.umanitoba.ca (Kenneth G. Smith)
Organization: University of Manitoba, Winnipeg, Canada
Lines: 38


I was wondering if there is anyone out there who can help me with
a loading problem I'm having with my Apple II+.  When I boot DOS,
the Applesoft BASIC interpreter seems to crash as soon as it tries
to execute any of the lines in the 'HELLO' (DOS 3.3) or the
'Startup' (ProDOS) program.  Using 'TRACE', I can see that it
bombs on pretty well the first executable line (it does, however,
execute 'HOME' and 'TEXT' alright).  It seems prone to crash on
'PRINT' statement and when trying to 'DIM'ension an array.
This causes me to be thrown into the monitor ('*'-prompt) each and
every time I startup my system.  A few peculiar exceptions to the
rule are when I boot my 'AEPro' comm. program which boots fine,
activates my 80-col card, and executes flawlessly (actually my
CP/M OS does likewise ie. works).

At the BASIC prompt (after <cntl>-C'ing out of the monitor), I
can't seem to run any BASIC programs without hanging the computer.
Sometimes DOS commands such as 'CATALOG' give me a syntax error,
sometimes not.

Does this sound like a possible motherboard problem?  I don't
really want to replace it only to find that it's a memory or I/O
problem that could be fixed with a simple chip swap.  Why will
some canned software (AEPro (PRODos) and Bank St. Writer (DOS 3.3))
run flawlessly, while other programs crash on the first statement?

Any suggestions or trouble-shooting techniques would be appreciated.

                               Thx,


                               Ken Smith

-- 
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