[Cable details deleted]
While not strictly unobtanium, I wouldn't be sure
where to get that
DA26HD from right now.
It's probably easier to find than the 19 pin D for the floppy drive
(although I suppose you could wire upo a couple of 20 pin headers and
used the old Disk IIs with it). What is the name for that connector
anyhow? I've seen it called a DF19 (and a DG23 for the 23 pin version),
but I am not convinced those are the offiical names.
-tony