15 Dec
2001
15 Dec
'01
9:15 p.m.
From: John Allain <allain(a)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
15 Dec
15 Dec
10:10 p.m.
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(a)bellatlantic.net> wrote:
From: John Allain <allain(a)panix.com>
__________________________________________________
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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
8428
days inactive
8428
days old
1 comments
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participants (2)
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ajp166＠bellatlantic.net -
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