Recovery adventure - Re: Unidentified DEC gear available, NSW-AU

[Mattis Lind]

2016-03-03 9:36 GMT+01:00 Mattis Lind <mattislind at 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