Pitfall Cocktail need some help

Arcade Collecting > Restorations & repair

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bcgamer:
Another , do t know how to describe it , a “dual pcb”
Pitfall 2 - the lost caverns

bcgamer:
But anyways I want to keep the guys but bypass this pcb
Is there any product to convert from 22pin that I have to Jamma Standard?

bcgamer:
One more

pbj:

https://www.ebay.com/itm/223713963426

Zebidee:

--- Quote from: pbj on June 05, 2021, 10:09:40 pm ---

https://www.ebay.com/itm/223713963426

--- End quote ---

PBJ I understand that they want to do the *opposite* of that. They want to run a JAMMA PCB on their unaltered pitfall cab (not run a Pitfall PCB on a JAMMA cab).

BCgamer, You need to make an adaptor "loom" to go from 22-pin to 28-pin JAMMA standard. I say "make" rather than "buy" because you probably won't be able to buy one. It isn't difficult and would probably take you a couple of hours of soldering. You also might be able to get someone to custom make it for you.

Go online, grab 2 things: a JAMMA harness
https://www.ebay.com/itm/192497131511?hash=item2cd1b91ff7:g:ScAAAOSwPoZavnj3

and some 28-pin JAMMA finger boards
https://www.ebay.com/itm/172121505038?hash=item28133dbd0e:g:uRwAAOSwaA5WiUaO

Now, you'll need to reduce the 28 pin finger board to 22 pins. Carefully mark and score along line with a craft knife to snap off (or cut off) the extra 6 pins. You might screw this up first time, so make sure you have multiple fingers to work with. You might be able to find 22 pin fingers, but that will be more difficult and might cost you more. Anyway, I'll leave that to you.

Now you can chop back the JAMMA harness wires and solder them directly to the 22 pin finger.
It is just soldering-by-numbers from here. Follow the original cab harness and standard pinouts as your guide.

The JAMMA pinouts are everywhere online. Here is a pinout for Pitfall II:
https://www.arcade-museum.com/pinouts-game/9036.html

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