Re: UD3 ROM on a 3032

From: Francesco Messineo <>
Date: Sun, 5 Feb 2017 23:03:42 +0100
Message-ID: <>
It was a crappy socket :(
Sorry for that. I had checked continuity on every pin but probably it
was not enough to have a reliable connection. With a real socket, the
option starts fine.
Now the 3032 is stable for a few hours, it just crashed once while
playing with tape load/save, I don't know if a bad tape can solid
crash a PET anyway, it was in the searching phase.
However those original sockets are so scary that I might change them
all (if I ever have the patience to remove all those 40 pins ones).
I need to get a disk drive or a ieee-sd kind of drive, I had forgotten
how slow were tapes :/


On Sun, Feb 5, 2017 at 7:38 PM, Francesco Messineo
<> wrote:
> On Sun, Feb 5, 2017 at 7:34 PM, Mike Naberezny <> wrote:
>> On 2/5/17 10:18 AM, Francesco Messineo wrote:
>>> You said you disassembled it, so maybe if I tell you what's the PC
>>> value after entering the monitor you might give me a clue where it's
>>> stopping?
>> It depends on the value of the PC.  The PET will often dump into TIM when it
>> crashes and the PC may not make much sense at that point.  If it's $9xxx
>> then it's still in the SUPER*TOOL ROM area and a disassembly may be useful.
> yes, it's still in the $9xxx range, but I didn't notice if it's always
> at the same point.
> I'm going to try to read the ROM from "inside" the PET and compare the
> results with the image obtained reading it in the eprom programmer.
> Thanks
> Frank

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Received on 2017-02-05 23:00:02

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