Many other Floppy disk and even some MFM hard drive
emulators are out
there
as enthusiast builds, but are generally not available, or are not drop in
replacements, or only support particular hardware e.g. Commodore Amiga.
All ends up in a lot of frustration if you ask me! I am not sure which is
more evil: posting up a device that does just what I want (but I can't
buy), or one that I can buy (but I can't afford).
There ARE free floppy disk emulators around, just pick up the schematic
and build one :o)