Today I got a new JAMMIX. I took out the SD Card I was using on my old MiSTer (with no issues) and starting to test.
I have noticed that on some arcade cores (for example Rod-Land and many, many others), it shows that the ROMs are loading fine, and once loading is complete, the screen stays black. The menu shows up normally when pressing F12, but in the background, no game plays, just a black screen. Seeing that this does not happen on my old MiSTer, the issue must be due to hardware differences between normal MiSTer and JAMMIX?
Any ideas how to solve this? Thank you.