That's a really cool hack, I wonder if it would work on 82077AA or compatibles? I might give that a try later this month after I resurrect my A500

Presumably it should be possible to create a simple drive emulator to spit out that sector/track header without needing an actual disk. Not sure if I'm smart enough to tackle that but it's worth a try!

I'm already working on a 6502 System at the moment that has an 82077AA compatible FDC and can read PC Formatted floppies so it should be relatively easy for me to tool around with this hack.