Check what FDC chip and or/ additional circuitry is used on the floppy
controllers; boards that can handle FM ("Single Density") are handy.
Any board that has discrete ICs is a lot more fun to hack than one with
VLSI.
If you are new to hardware, look at Bruce Eckel's book on parallel
port interfacing.
--
Grumpy Ol' Fred cisin at
xenosoft.com