Re: Cinematronics question

Hey Matt,

This should answer your question pretty quickly.

http://www.ionpool.net/arcade/cine/ccpu_upgrade.txt

Here's a quick extract:

Depending on the Revision CCPU you have, your game might have used
9316 :
marked PROMs, 2708s, 2716s, 2532s(?) or a ROM expansion board which
was :
connected to the 1st and 3rd sockets (U7 and R7). Some CCPUs use 2
PROMs :
instead of the normal 4 PROM setup. These 4K masked PROMs
were :
manufactured with the 2K blocks reversed. To fix this,
Cinematronics :
lifted the 2K address leg of each PROM so that it didn't go in the
socket :
and jumpered it to the ROM spot to the left which uses an
inverted :
signal for that line. What a
mess!

tm

> Matt Rossiter wrote:
>
> Happy new year everyone. I've been fixing a bunch of cinematronics
> cpu's in celebration of the new year. :) I have one mystery board
> that I'm working on. The roms are missing and it's only got sockets
> at R7 and U7. I assume it could either be a Space Wars or a
> StarHawk. Can you interchange these roms (switch between starhawk and
> space wars) or do you have to modify them first?
>
> thanks
>
> Matt
>
>

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Received on Fri Jan 2 17:52:00 2004