+1 with Marc. Sounds like a 21MX of some flavor. It will have two
prominent card-edge connectors side-by-side around mid-board that connect
to memory and I/O busses that run "up" from the PCB-face.
On Sun, Nov 8, 2015 at 3:21 PM, Marc Verdiell <marc.verdiell at gmail.com>
wrote:
Cindy Croxton
wrote
This week I passed up a
large (at least 24" per side) HP server mainboard from the 70s
Large HP boards from the 70's. This sounds just about perfect. This one
would have fit the description of a HP 1000 mainboard pretty well. Medium
sized ones too. Anything HP from the 70's or early 80's for that matter.
Bring' em home!
Marc