I've looked into this too. Problems are many. It's
definitely not a trivial project, lots of analog and
electromagnetic voodoo, and the chips that made it
easier are very hard to find. I've got a small
capacity large doughnut ca. 1960 core plane from an
IBM machine and a 4K by 16 plane from the 70's with
very tiny doughnuts, both unused, and I'd love to
demonstrate how it worked.
--- ajp166 <ajp166_at_bellatlantic.net> wrote:
> From: John Allain <allain_at_panix.com>
> >I have a Question for the other core users out
> there:
> >How would I test-signal a board, for demos, that is
> >just a core frame, IE one sacrificed from its stack
>
> >and sold at the e- flea market?
>
>
> It's a non trivial thing to do. Core by definition
> is destructive
> read out memory. So to demo a core you need to
> provide
> the coincident current (x,y) and the
> inhibit/write/read signals
> with the associated timing. Both the currents and
> the
> timing are critical. takes a lot of stuff to do
> that.
>
> Allison
>
>
__________________________________________________
Do You Yahoo!?
Check out Yahoo! Shopping and Yahoo! Auctions for all of
your unique holiday gifts! Buy at
http://shopping.yahoo.com
or bid at
http://auctions.yahoo.com
Received on Sat Dec 15 2001 - 22:10:44 GMT