I think that you need an arcade card DUO to get it to work with th duo
system. The Arcade card PRO is for standard turbo/cd combos. Also-
regarding Cosmic Fantasy 2- I always had problems with it keeping my
savegames. It seems like it gets currupted if I don't play it for a
while. This may be due to my surge protector that I have hooked up. I
usually shut it off when I am not playing, and the memory gets wiped on
the CD unit if I don't power it up in bi-weekly intervals.