Ok, I finally got a complete Naomi setup.   I bought a Naomi 1 mobo w/region switch and Capcom I/O adaptor.  I'm running Cosmic Smash on it.   First problem I had was that I couldn't get the board to work.  I got an Error 1 message.  Turns out I didn't have the cart fully seated in the mobo.   Once I figured that out, everything was fine.  
Now that I'm up and running...I have a question about Cosmic Smash (being as it's the only game I have).   Is there a continue mode on the damned game?   How do I access the settings for the game?   Is it all done from test mode?   I can't seem to find much info.   
Thanks for any help!