For those of you who have problems with Naomi, I'll tell you about my experience:
It works for me on some bases and not on others, I don't know why, if it's a problem with the filter board or not.
what I recommend is that if you have other Naomi bases, test it with others
I'm looking for this Nintendo PC-10 games:
Baseball Stars
Chip'n Dale RR
Hogan's Alley
Power Blade
Rockin' Kats
Solar Jetman
Tecmo Bowl
TMNT
Wild Gunman