Mailinglist Archive: opensuse (4020 mails)

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Re: [SLE] new v9.2 is out-terminal question
  • From: JAMES KNOTT <james.knott@xxxxxxxxxx>
  • Date: Wed, 27 Oct 2004 16:53:46 -0400 (EDT)
  • Message-id: <20041027205346.17624.qmail@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
--- Darrell Cormier <linuxdev@xxxxxxxx> wrote:

> Just curious if any of you have every worked with a
> machine that used core
> memory. If I remember correctly you basically had a
> cage of "boards". Each
> board was an x-y grid of fine wire and around each
> intersection of the wires
> was a ring of some ferrous oxide material. A
> current was applied to a
> certain x-y coordinate to charge the ring thus
> representing a binary 1. This
> was a system that had a destructive read which
> required you to write back
> what you just read.
> I have never used one myself but one of my college
> instructors had one of
> these cages of core memory modules from a machine he
> had used in his youth.
> Quite interesting.

Yes, I've worked on a few models that used core,
including Data General Nova & Eclipse, DEC PDP-8i &
PDP-11/24, Collins 8500C. I also have a core plane
(4K x 1 bit), from a Colins 8400B here. I also worked
on some Phillips terminals that used core memory.

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