[rescue] Data General "Desktop Generation" help required

[Carl R. Friend]

   G'day Rescuers!

   Do any of the sages hereon have the technical details for a Data
General Desktop Generation Model 20 (with FIS)?  Specifically, I'm
looking for what all the jumpers and DIP switches actually *do* (not
what the factory-recommended settings are) and the exact pinouts for
the cable that connects the SPU (System Processing Unit) to the console
terminal.

   I've got a DG-20 here that seems to be in pretty sad shape (no
echoes even from the console terminal) and I'd like to make really
sure I haven't brain-farted something simple.  I've got the standard
DG "installation" manuals, which show jumpers and DIP settings, but
which don't go into any *detail*.  ARRGH!!!!

   HELP!  And many thanks in advance.

   Cheers.

+------------------------------------------------+---------------------+
| Carl Richard Friend (UNIX Sysadmin)            | West Boylston       |
| Minicomputer Collector / Enthusiast            | Massachusetts, USA  |
| mailto:crfriend at rcn.com                        +---------------------+
| http://users.rcn.com/crfriend/museum           | ICBM: 42:22N 71:47W |
+------------------------------------------------+---------------------+