Re: PET ROM User Guides for ROM-X, KeyCHIP and MonJana

From: Ethan Dicks <>
Date: Tue, 1 Nov 2016 15:50:02 -0400
Message-ID: <>
On Tue, Nov 1, 2016 at 6:41 AM, Baltissen, GJPAA (Ruud)
<> wrote:
>> Sorry forgot to add I have a CBM 3008 which has 32KB of RAM.
> IIRC the 3008s had only one row of DRAMs and in the second row Commodore drilled holes to make it unusable. Either the holes in your machines were missing or somebody used a trick. Could you have a look and tell us what happened inside your machine, please?

Wouldn't a 3008 have two rows of 4Kx1 DRAMs?

I thought it was the 16K machines they drilled out the upper bank on -
6mm or 8mm holes, IIRC, in several places to "ruin" the area (one
could clean it up and run wires, but it was beyond the skills of most


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Received on 2016-11-01 20:00:02

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