the 50xxxxx
number with the letter behind it could be a dec board number.
The 50 class could be the artwork, and the letter the board rev. If that is the case,
there is probably a 54- class on the other side of the board one number higher. The 54
number is the board with components, and can be tracked down, but not easily.
Thanks for this hint, Paul. I rechecked for numbers, but couldn't any 54-numbers on
the boards.
They could have
been renamed by another company.
Any other print
in the etch?
Interestingly, the prints in the etches are those I stated and all have an X prior to the
actual number.
I still have not clue what these boards are for. Any help is highly appreciated!
Thanks,
Pierre
On Sat, May 28, 2016 at 5:51 AM, P Gebhardt <p.gebhardt at ymail.com> wrote:
Hello list,
>I recently got a bunch of boards from
somebody who was either not able to tell me where they were from.
>The boards seem to be unibus-based with numbers starting with X. I neither came across
these before, nor could find any information in the web about it:
>Type, P/N , Description
>X029, 5013132B, AUC interconnect
>X022, 5012197C, unibuswindow
>X021, 5012181C, CD ROM control (did that ever exist for unibus?)
>X020, 5012180B, data path
>Two 16K mos memory modules M7847
came with the set.
>No backplane, unfortunately.
>Any hints about the type of system and application these boards were for?
>Many thanks for any pointers.
>Wish a nice weekend to all of you,
>Pierre
>-------------------------------------------------------------------------------
>Pierre's collection of classic
computers moved to:
http://www.digitalheritage.de
