Namely, Doki Doki Panic. I DLed the ROM and something called famicon disk system BIOS or something like that, and I renamed it disksys.rom as the instructions said, and opened it in the emulator. The emulator just says loading and then battery error or some such in a neat looking screen. Has anyone played a DSF ROM successfully?

Also, I'm using a mac and tried it in NEStopia as well as RockNES.

Thanks!