Ditch the paltronics for an easier to set up system even if you find a controller the software to program it is next to impossible to get.
Huh? Wait. I sort-of know Paltronics. Got a boat load of stuff. Mostly BSK100 and PAL193's I think I can help here.
I've found the manual for the display and uploaded it to the files section.
Not sure if it needs approval or not,
https://newlifegames.com/nlg/index.php?action=downloads;sa=view;down=4404 This looks like it will take a lot of components to get working, it could be a fun project for you. Depending how much work you want to put in to it.
I can probably help and get parts. Happy to get rid of them. Send me a PM if you decide to jump down this rabbit hole. We can probably get it working but it is only a piece of a much larger system. BSK was a total casino progressive system. I love it. Too bad I was like 10 years too late.