I'm trying to use FCE Ultra to play famicom disk system roms which its supposed to support but can't get it to work. It keeps telling me I'm missing the BIOS which I have and have gotten from different sources to see if it was the BIOS itself not working. I've set up the directories for it but it still gives me that message. I can load up the BIOS itself but it also gives me a message saying battery error.02. I've also renamed the BIOS disksys.rom like the faq for it said to do but it still says its missing. So has anyone gotten the famicom disk emulator to work on their pc and if so how did you do it?