I now realize how silly of a question that is since it doesn't care about it with any other game... T_TAll you need is to have a Namco, Sega, or Capcom I/O attached to the 256 and Taiko will boot into the game. It doesn't look for any type of controller being actually attached to the I/O.I'm curious to know if the 256 is fine booting Taiko with just a single drum attached. Have you got just the one in your setup, Defor?
Heh. Yeah, it's not like the Naomi, which won't boot some games without the right I/O board (like Ninja Assault).