Before production boards were started, I made a change to my SuperCard Pro project to make the floppy bus fully bi-directional. This means that besides being able to use a real floppy drive, it can also emulate a floppy drive. So, we can use protected disk images via the built-in microSD card slot. Besides USB (using a parallel FTDI USB FIFO chip), there are also two 1Mbps serial buses that can be used to transfer data. So, theoretically it should be possible to boot protected disk images from an SD card and not require a real floppy. I am just starting the drive emulation support, but since its mostly hardware driven (capture/compare w/DMA) I don't think there is too much to do to make it all work... famous last words! LOL!