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
