2016-03-03 9:36 GMT+01:00 Mattis Lind <mattisl...@gmail.com>: > > > >> >> Finally I removed the Foxboro paper tape reader. The tape holders each >> side slide up to reveal the rack mounting >> screws. Onto the ute it went. >> >> There were some other racks of gear, but all custom idustrial control >> equipment. One rack had a DEC A-D Converter >> in it with some serious cables connected to some backplanes of the >> smaller Flip Chip modules. I grabbed the A-D >> and Flip Chips. >> http://www.surfacezero.com/g503/data/4173/gear_recovery_16.jpg >> http://www.surfacezero.com/g503/data/4173/gear_recovery_17.jpg >> http://www.surfacezero.com/g503/data/4173/gear_recovery_18.jpg >> http://www.surfacezero.com/g503/data/4173/gear_recovery_19.jpg >> http://www.surfacezero.com/g503/data/4173/gear_recovery_20.jpg >> >> >> > > What is in picture 18? There is something very familiar with it. To me it > looks like the backplane of a PDP-9. The core memory stack in the top. > > Compare with the RICM PDP-9: > > > http://www.ricomputermuseum.org/Home/equipment/dec-pdp-9/PDP-9_Processor_Front.jpg > > I would be very interesting to see more pictures of the cabinet in picture > 18. > > I also would guess that the the cabinet with the A/D converter (AF01A) in > the top also hold a D/A converter (AA01A). It looks very much similar to > the one we have with our PDP-9. > > https://dl.dropboxusercontent.com/u/96935524/Datormusuem/Exhibhall-8l-8e-rk07.png > (the cabinet next to the RK07) > > /Mattis > >
Just checked the list of 18 bits installations that Bob Supnik made available: https://dl.dropboxusercontent.com/u/96935524/Datormusuem/18bitServiceList1972.pdf There is a PDP-9, s/n 209 delivered to Australia Iron & Steel. It had a AF01B (A/D converter) s/n 195 and a AA05B (I am not sure how it differs from AA01) s/n 101. It is also supposed have an extra memory cabinet since it had two memory stacks. There are also two items which I would guess is non standard options: "76 05404" and "76 05426". Check the AF01 you got is matching the serial number. It was delivered in 1969. There are a few flexiprint cables dangling in the foreground. I think those are the ones that are supposed to connect with the front panel. So someone has probably taken the frontpanel. Maybe that is way it is not recognised as a PDP-9. /Mattis