Skip to content

Driver Mode 25: System 11 A/C Relay

This page describes a mode of operation for a driver. See the Working with Drivers section of the FAST Serial Protocol documentation for details about how to use it.

System 11 machines use an "A/C Relay" which allows two drivers to share the same driver control line. FAST Pinball Retro Controllers support this relay via a special driver mode of operation.

Full documentation of this mode, including why it exists, how to use it, and configuration examples, are in the FAST Retro Platform documentation here: How FAST Retro Controllers handle the System 11 A/C relay

Documentation Feedback? Requests? Confused?

Hi! I'm Brian, and I'm responsible for the documentation at FAST Pinball. If you have any feedback, requests, corrections, ideas, or any other thoughts about this documentation, please let me know! You can email me at Thanks!

N or > jump the next page, P or < for previous, search with S or ?