We totally missed this during RetroChallenge Winter Warmup 2014. Luckily, we caught up with Michael Sternberg during KansasFest for a demo. Checkout his disk/image transfer program for the Apple II using Vince Briel’s A2MP3 adapter.
Michael wrote A2MP3-Xfer has a proof of concept, so it’s rather limited (DOS 3.3, DSK images only). The source code is available on BitBucket for download and Michael encourages anyone interested to check it out and expand upon his work if they’re interested.
Manuals for programming and technical specifications are still available.