Amazing job Mike.
One question (as I seemed to have missed this) - The board has provisions for a single 5101 - looking at the pics, there's no provision for the second 5101 for MPU-200 boards ?
Yes, that is 100% my error. I didn't have a Stern board to check so we overlooked the second RAM.
So, obviously it won't do the job in place of an MPU200 as it stands but I am working on a plug in daughterboard for it.
I see most people using it for Bally - 35 replacement and we only have 100 boards so we can work that into the next batch