Quoted from T-Tommy:I'm working on a Twobits -35 mpu board. It's designed for something different than the standard Bally push button. Does someone sell one that fits on this board or should I just leave it vacant. Thanks
The Two bits boards just uses a different type of push button at S33. Can be seen here.
https://www.bigdaddy-enterprises.com/images/DASH35.JPG
GPE sells a replacement switch as per the original Bally switch, not sure if these line up with the holes on the Two bits board. Without any switch at S33 you can't clear bookkeeping memory as far as I know (besides removing the 5101 or power to it)
https://www.greatplainselectronics.com/proddetail.asp?prod=39-261-BLK