This may help a bit, not sure if it is for the IIc or
not but it is for the
II :
http://www.oldskool.org/disk2fdi
there is a trial version for which you need 2 drives and a pay version for 1
drive. Also there are instructions for a cable you need.
I think there's a freeware program called ADT (Apple Disk Transfer?) which does
the job with the standard Apple serial card. When I was looking, there were two
versions for two different cards.
The only card I had at the time was a software bit-bashed card which was not
supported and ran at a max of 300bps (perhaps 1200) - obviously that was not
going to cut it, so I built my own card (not a standard apple card either :-(
... And wrote simple programs on each end to transfer the images - worked very
well.
Regards,
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools:
www.dunfield.com
com Vintage computing equipment collector.