On Fri, 20 Jan 2023, Chuck Guzis via cctalk wrote:
There is also the SMSC USB97CFDC2 floppy usb
controller. Al has the
datasheet archived on bitsavers:
http://www.bitsavers.org/components/standardMicrosystems/_dataSheets/USB97C…
also, I found it here;
https://www.mouser.com/datasheet/2/374/97cfdc2_01-198397.pdf
What more could you ask for--legacy floppy interface,
external flash
programming...
I'm a bit surprised that nobody's come up with a design using this
creature. Of course, there's the possibility that they're unobtainium...