Is that the battery I'm looking for? Also, you say that games with mode 7 don't run well? DAMN!!! FF games all use mode 7!!!! How bad are the problems?
EDIT: actually could somebody do me a HUGE favor and test out the ROMs I have to see if there are any significant problems or not and to see if Famicom ROMs are supported? I could send it to your e-mail (not this board obviously).