Quoted from jwilson:You realize that the PC doesn't directly drive coils or read switches, right? There's some proprietary electronics in-between, and if Heighway completely disappears then someone needs to reverse engineer those in the future.
Just send a board to jabdoa and you'll probably have it in a weekend. Reference: https://pinside.com/pinball/forum/topic/announcing-stern-spike-support-for-the-mission-pinball-framework