Neil Bradley has sent me an email regarding on a new Retrocade emulator for dreamcast. This is his message:

Greetings,

I thought you might be interested that I’ve ported Retrocade (arcade
emulator) to the Dreamcast. It’s still alpha at this point, but I was
wondering if you’d like to play with it a bit. I don’t yet have a CD
burned, but I do have a BBA image to load if you’re interested.

Thanks again for the great dcemulation site!

–>Neil

I have responded to his email and will upload the BBA image as soon as Neil sends it to me.