My Wang Labs calculator has a core plane memory for programs. When it did very long calculations, it could be turned off at the end of the day. The next day, you turn it on and a red lamp turns on to remind you that it is still in the middle of a calculation and continues until a result was
On Wednesday, May 20, 2020 at 7:15:06 PM UTC-7, iavine wrote:
>
> Great example of core memory.
>
> Interesting about the core dump. I guess that would even work after a
> power failure.
>
> IanV
>
>
That depends.reading from a core-memory is destructive, just like a
DRAM, so the data has
Great example of core memory.
Interesting about the core dump. I guess that would even work after a power
failure.
IanV
> On 21 May 2020, at 01:28, Bill van Dijk wrote:
>
>
> Most people have heard the term “core dump”, and some even use it without any
> idea where that came from. Those
Most people have heard the term “core dump”, and some even use it without any
idea where that came from. Those old computers worked slow, taking sometimes
several days to work on a single program. When a “bug” developed (seriously,
bugs shorting out things happened) the computer was stopped, rep
Early core plane memories were made by women weavers. Later, IBM developed a machine to make them - much faster to produce and way cheaper.
Pharma Phil
-- Original Message --
From: gregebert
Date: May 20, 2020 at 6:08 PM
As best I can tell, it loo
As best I can tell, it looks like a 256x18 array, which probably has 2 bits
of parity.
I was told years ago these cores were threaded by hand.
Years ago I played with a PDP-8, that was fully-loaded with 12K words of
memory. You could hear the cores squealing when the CPU was not halted.
--
Yo
That's a NICE one ! Much larger than the ones I see for sale online.
It has zero practical use because it could only be a few kbytes , but it is
a great museum piece. Today, you could store many terabytes in the same
area.
If you really want to do some experimenting, you could trace-out the X,
It's a magnetic core memory board. Used in the 50s and 60s before semiconductor
memory. Jeff
Original message From: "SWISSNIXIE - Jonathan F."
Date: 5/20/20 3:42 PM (GMT-06:00) To: neonixie-l
Subject: [neonixie-l] OT: Help with mysterious
part Hi guys,I know this is kind of
That's an old magnetic-core memory board. I couldn't say for which
computer it was designed for though.
https://en.wikipedia.org/wiki/Magnetic-core_memory
-Benoit
On Wed, May 20, 2020 at 4:42 PM SWISSNIXIE - Jonathan F. <
jfrech...@gmail.com> wrote:
> Hi guys,
>
> I know this is kind of OT,