Pre-Jelly Monsters Pac-Man prototype?

History and Preservation Issues

Moderator: Moderators

Post Reply
User avatar
orion70
VICtalian
Posts: 4341
Joined: Thu Feb 02, 2006 4:45 am
Location: Piacenza, Italy
Occupation: Biologist

Pre-Jelly Monsters Pac-Man prototype?

Post by orion70 »

For sale HERE. I can't say from the screenshot if this is a regular JM cartridge, or instead a Commodore Japan "original clone". Too expensive of course.
User avatar
Mike
Herr VC
Posts: 4841
Joined: Wed Dec 01, 2004 1:57 pm
Location: Munich, Germany
Occupation: electrical engineer

Re: Pre-Jelly Monsters Pac-Man prototype?

Post by Mike »

For reference, here are two photographs I had saved from the auction.

They show the PCB is a variant of the +3K RAM/Super Expander PCB with two extra TTL ICs. These are most probably used for finer address decoding (the detailed photo shows !A11 and !A12 being made available) - this would allow to use two 2716s in the lower and upper half of a 4 KB address range instead of one 2732 or similarly, two 2732s in place of a 2764.

Out of interest, did a Denial member win that auction perchance and could provide photos of the PCB (component and soldering side) without surrounding cartridge shell? Or does someone else here own a cartridge with the same PCB and could do the same?

Image

Image
Post Reply