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From: idh@nabla.electrical-engineering.umist.ac.uk (Ian D Hawkins)
Newsgroups: comp.sys.hp
Subject: 9816 backplane info,  68881 i/f location
Message-ID: <9103262023.a025659@nabla.electrical-engineering.umist.ac.uk>
Date: 26 Mar 91 20:23:12 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 12

It seems impossible to get schematics or details of the backplane used in
the old 9816 machines.  Could somone suggest where I could find details of
(functional description , timing, pin out) of the backplane of this machine.
Where is the 68881 interface address?.  Has the memory map been published
anywhere ?.   Has anyone heard of a publication called 'Bench Notes' in which
a component level schematic apparently appeared ?.  Can one 'peek and poke'
bytes to specific locations in memory using rocky mountain
basic ?.   Is there a cross reference listing of hp part
numbers vs real world part numbers published anywhere.?.  Has
anyone hacked hardware in this device ?.  Comments,
suggestions or general help welcome on all points!.
                                        Ian H.