"And really of what use would it be, since
you couldn't read Amiga-formated disks with it ?"
you could read pc-formatted disks...
I know that nowadays it's not as important, but it's a little annoying. If the motherboard includes a floppy controller why should I buy a more expensive usb or floptical drive?
If you talk with Laire it would be nice for Mac emus if he leaved free the address from 0x0000 to 0x3000 (yes, like prepareEmul or RsrvCold did). It won't affect MOS but will allow mac emus to be ported easily (who knows, iFusion may even work directly with this small change).