[sdiy] Old memory chips for edp spider - IM6561CN or IM65X61JN ?

[Julian]

My spiders, upon testing, are as most spiders seem to be - dead.

The problem has been traced back to the memory chips (not by me mind) but 
the person working on them has had no luck in finding suitable replacements.

So, anyone got a big bag of these knocking about ; ) or know a man (or shop) 
who does?

Im in england, if that makes any difference to anything?

Thanks, Julian