Unfortunately you have to convert every ADF image to custom format (raw MFM data) and then store such files on an SD card. Only one drive is supported. More over write to images created from Amiga disk format files (ADF, DMS, IPF) is not supported.
I'm thinking about making my own floppy emulator supporting directly ADF images (writable) and up to 4 floppy drives (that would require some Amiga hacking since external floppy connector supports 3 or 2 (A2000, A3000 & A4000) drives, also making external drive acting as DF0: isn't simple (maybe except A4000 where you need only to change a jumper).
