Ignatios Souvatzis wrote:
>    I don't recognise the board per se. (sorry), but if you can describe
>    the memory connectors (pins or sockets?  how many pins?) a little
>    better we might be able to help.  With that many of them, they
>    may well be "standard" 30-pin SIP/SIM modules.
> 
> Err, I might have been too vague about this. Yes, they are supposed to
> be 30-pin SIPP... was there only one sort of them?

In terms of pinout, I believe so.  You'll probably want 80 or
100ns parts, and probably with parity.  Finding that sort of
memory part these days might be a bit difficult.  Depending on
the spacing, you may be able to use SIMMs in skinny sockets 
plugged into the SIP sockets.  A bit revolting though.
 
> No, it looks like this (view from component side).
...

Hmm, can't say I have the faintest idea what it might have
come out of; best of luck tracking down details!

--
Mike Smith  *BSD hack  Unix hardware collector
The question "why are the fundamental laws of nature mathematical"
invites the trivial response "because we define as fundamental those
laws which are mathematical".  Paul Davies, _The_Mind_of_God_