I was looking for a SD/FF and found this site
http://www.genao.com/converters.htm (first Board)
with a board that might work. I have plenty of old 1084 monitor cables that have 23 pin D plug but I don't known enough about the circuit of the SD/FF to known if the quality of the output would be ok.
Ron
Sorry I gave the wrong site address, it should work now.