I have recently converted to MAMEUI64 as my front end, as the author of MAMEUIFX has called it quits, and I don't want to get left behind.
Anyway, in MAMEUIFX, one could get hiscore-dat working to save the high scores if one were so inclined. I can't figure out how to do it in MAMEUI64. When I google, people just say "meh, save the game state on exit". But, IMHO that's sloppy. I much prefer what hiscore.dat did for us.
What's the trick to get this working in the latest MAMEUI64?