21 Apr
1999
21 Apr
'99
4:57 a.m.
--- John Dykstra <jdykstra(a)nortelnetworks.com> wrote:
I have several jars of ferrite cores made by IBM
sometime in the late
1950's. I don't know exactly what size they are, but they can be
hand-wired without a stereo microscope.
Cool.
As I recall, I used something like #60 enameled wire.
One of the
challenges was stripping the insulation off the ends of the wires without
damaging the copper.
Heat? Chemicals? Friction?
If anyone is seriously intending to build a demo core
memory system, I'd be
glad to provide a couple of hundred cores. I'd recommend something like a
16x16 array, unless you're looking for a project to make a 20-to-life
sentence go faster.
I'm serious. I really have wanted to build something like this. In terms
of size, the problem isn't the wiring, it's the redundant circuitry.
-ethan
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