I have a Sys11C MPU from a Rollergames for sale, $160 shipped.

It includes a CPU ROM set of choice. Board has been configured with a sealed coin cell battery.

This board will work with

Game Show
Rollergames
Pool Sharks
Diner
Radical
Riverboat Gambler
Bugs Bunny Birthday Ball
Dr.Dude

This board has corrosion repair on it. Work was properly done, but is worth mentioning.

Repair log:
https://pinside.com/pinball/forum/topic/repair-log-rollergames-sys11c-cpu#post-2117297

Guaranteed for 1 year. If something fails, ship it back to me, and I fix it and return it to you at zero cost.

I've got an 11A in the rebuild queue, will be a little more than this one, and maybe another week or so.

May have another 11A as well.

If you have a ES or Taxi board needing repair, let's talk?

Sold!