Hi, I received
a Xerox 820-II mainboard. I've found that does not have a
FDC
on board and that the 37-pin connector used to
connect the floppy disk it
seems to have a bus and its own protocol to talk to an external FDC board
outside. Is there anybody who knows more and is it there a way to try to
connect and operate the drive with this mainboard?
Having cleaned the heads, about every other disk going through a box of
8" 820 disk, sthere is nothing in the drive other than the drives and a
power supply. I am not sure if the 820-II is different but, I doubt it.
The cable just splits off to each drive. Everything is on the mainboard.
Years ago I had a 820-II with both the 8086 daughter board and a drive case
with 8" floppy and HD (All of 3MB). As I recall the protocol was SASI
(hence the heavily-shielded 37-pin cable).