IIRC, the WD-1002-HD0 is the same controller as the
WD-1002-05, except that
it doesn't have the floppy support. I think Herb Johnson sells a manual
for one on his
retrotechnology.com site, but I also haven't checked
bitsavers.
Yes, but does that manual contain a schematic? Alas I've discovered that
many computer manuals don't contain such useful information.
-tony