On Oct 13, 2016, at 9:33 AM, William Maddox wrote:

> This looks like a GP-4, though I am suspicious that parts of it have been 
> modernized.   The GP-4 had a drum memory.
> https://grafeauction.proxibid.com/aspr/Genal-Precision-Systems-2-door-avionics-cabinets/32464723/LotDetail.asp?lid=32464723
> Someone should grab the SEL machines:
> https://grafeauction.proxibid.com/aspr/Simulator-avionics-cabinet/32464645/LotDetail.asp?lid=32464645
> There are a few 3C cards in the pallets of parts, and a few can be seen in 
> the 7th photo here:
> https://grafeauction.proxibid.com/aspr/2-door-avionics-cabinets/32464736/LotDetail.asp?lid=32464736
> Computer Control Company machines (e.g. DDP-124) were widely used in 
> simulators in the mid/late 1960s, when many simulators for aircraft of that 
> vintage were built.
> The computer itself is nowhere in sight, however.  Probably, all that remains 
> are specialized simulator interfaces, with the PC in the last photo doing the 
> computing.  :(
> --Bill

Did anyone on the list grab the GP-4? I just returned from the NWA center and 
while claiming my Documation reader I had a chance to look around the room (and 
there are LOTS of computer rooms there). That GP is an absolute beast, 3 rows 
of interconnected cabinets full of circuit cards and power supplies. The name 
plate says it was originally sold to Continental Airlines. The drum has been 
replaced with a solid state emulator and it looks like the core may have also 
been upgraded. What I also noticed were piles of books, binders, and file 
cabinets full of system documentation including original schematics and system 
diagrams. I sure hope those weren't sold as separate lots.

There also appeared to be more DEC related equipment than I recall on the 
auction site, or perhaps sold under ambiguous lot names. Any PDP buyer(s) 
should have a good look around that computer room for associated documents, 
PCBs, binders, etc. for the sold systems before the paperwork gets tossed.  -C 

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