First off, congratulations on making a relatively complex computer system and game format so playable. I found the latest core and .hdf games really easy to fire up and start playing. I was also really impressed with the overall compatibility.
I'm new to MiSTer, but a long-time X68000 fan via emulation (EmuELEC), and I've spent quite a bit of time playing/testing games and toying around with core settings. Playing through some .hdf games on the collection that was shared earlier, it looks like this core is currently locked to 16 Mhz? Is there a way to switch to 10 Mhz for some games, because certain games won't launch (i.e. Sabnack -- I've learned to recognize the Japanese test, lol), some play too fast, and others have glitches if forced to play at 16 Mhz. I found this page recently, and the results at least pass the eye test in what I've noticed through my own testing:
https://pcbiroiro.blogspot.com/2015/06/ ... 16mhz.html.
I also have Midi-32 Pi parts on order and would be happy to help with any testing on that front.
Keep up the awesome work, and I'm totally pumped for future releases
[Edit] Not sure anyone is working on this fix, but I added it on Github:
https://github.com/MiSTer-devel/X68000_MiSTer/issues/26 [/Edit]