Re: Commodore PET find

From: Ruud Baltissen (
Date: 1999-01-30 08:48:17

Hallo Geoff,

> Well, this one has 64KB. No lie.

> There's a little board that goes on top (with the CPU on it) has four
> rows of 8 4116's. In my book, that's 64KB. :) So I guess looking at the
> motherboard, that means I've got 96kb! :)

Congratulations first for getting your C=s.

Thanks for answering two of my four questions. I have a loose 64 KB expansion 
board but haven't found the time yet to test due to two reasons:
1) I wasn't sure where to hook up the 40 pin connector (but my fair guess was 
the 6502)
2) one RAM-IC was missing and the code was complete unfamiliar

The last two questions are:
1) do I need extra SW (or ROMs) to make real use of the expansion? I gues the 
original BASIC does not see the expansion.
2) what is the onboard Motorola-chip MC3242AP? I guess a PLA but does anybody 
know for sure and does anybody know the pinouts?

Thanks for answering the above questions.

Groetjes, Ruud

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