Thanks for all these details neodev :) , i don't own my coregrafx for a very long time (few weeks before my SSDS3) and i was expecting jailbars like my duo-r and ready to fix it .
But honestly i couldn't find one : the picture is perfect via SSDS3 output, even with my low cost RGB cable...
Same issues here under garou densetsu 2 yesterday , i had some sprite glitches and even at a moment a black screen with a reset of the game.
The in-game trigger option is disabled , my console is also the blue CoreGrafx , stock and in near mint condition , using a good 9V 1A stabilized psu .
To use DS cart:
Gentlemen start your engine !
1: Put your stock bios
2: Put the voltage rail to 4,6V
3: Warm up your mvs motherboard
4 :Make sure your RAM is empty
5: Measure strength of wind
6: The atmospheric pressure too
I was like you , preferring largely Ram memory cart based in the...