SAGE memory plane

dwight dkelvey at
Tue Sep 18 09:11:01 CDT 2018

Its a shame it wasn't in the complete unit. Unless someone actually erases it, core memory will hold data until the sun swells up, as a red giant, and toast the earth.

One always wonders what one would find on these old cores.


From: cctalk <cctalk-bounces at> on behalf of Mike Loewen via cctalk <cctalk at>
Sent: Monday, September 17, 2018 9:10:21 PM
To: Al Kossow; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: SAGE memory plane

On Sun, 16 Sep 2018, Al Kossow via cctalk wrote:

> ebay
> can someone identify exactly what this box was called, when it was deployed,
> and what training manual they are referring to?

    In the T.O. (,
that cabinet is called "core memory 1", or 256² ferrite core array". We  just
called it "Big Mem".  Here's a picture of the cabinet from McChord's

    I'll have to look through my references to find out when it was deployed.
That training manual doesn't seem to be on Bitsavers.  :-)  It would be nice
to find it.

> we have a couple
> and they keep getting mis-identified.

    I have one, as well:

Mike Loewen                             mloewen at
Old Technology                

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