I recently picked up a non-working Williams Pokerino machine in pretty decent shape with the exception of the backglass, and have determined the issue with the game is the MPU/Driver boards.

I have a working set of boards out of my Blackout (System 6), which I understand by researching it are compatible with System 4 machines, having to only change out the Flipper and Game ROM's.

The ROM's on my System 4 board are not marked, and the only information I can find says they are located at IC20, IC17, and IC14, however, on my board, IC14 (far right in the pictures) has no chip in it, and even the layout diagram for the board says "NOT USED"

Can someone please tell me which chip is my Flipper ROM 1, which one is Flipper ROM 2, and which one is my Game ROM so I can get them transferred over to the other board correctly?

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Thanks!!

I'll get them transferred over and hopefully have a working Pokerino!

Worked!
Pokerino is alive!
Thank you again barakandl and zacaj!!!