The XPin 7Volution system uses a PIC-based board that plugs into J1 of a Bally/Stern MPU. The purpose of this board is to intercept the display signals, watch for the score to roll over, and then add in a 7th digit when applicable.
I made this version of the code to add some functionality:
- work more seamlessly with the display test mode
- work with MPU-200 games, like Meteor
- work natively with RPU games, using the RPU_USE_MULTIPLEXED_DISPLAY_DIGIT_LINES define (this allows RPU to use all 7 digits without engaging the built-in roll-over logic
If you have this code, your displays will boot with 627 in the player displays and have 2 01 in the Credits/BIP displays.
To put this code on an XPin 7Volution, you need a Tag-Connect TC2030 programming harness, PICKit programmer, and MPLAB or some other programming software.