this post was submitted on 26 Jun 2023
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retrocomputing

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The first computer I ever worked on had 8KB of core memory. It was an old Digital Equipment Corporation pdp-8/e. I loved that machine and its open face tale drives and teletype with paper tape punch and reader and card reader.

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[–] sixfold@lemmy.sdf.org 9 points 1 year ago (10 children)
[–] redcalcium@c.calciumlabs.com 6 points 1 year ago* (last edited 1 year ago) (8 children)

Is that... 32 bytes of memory? Wow, I didn't know they also came in rope form factor as well.

Some cores appear to touch other neighboring cores. Won't that cause issues to the core's magnetic properties?

[–] sixfold@lemmy.sdf.org 3 points 1 year ago* (last edited 1 year ago) (1 children)

Oh, I see what you mean by

Is that… 32 bytes of memory?

No, each wire that goes through the rope, weaving through or around each of the ferrite rings, represents one or multiple bytes.

[–] redcalcium@c.calciumlabs.com 2 points 1 year ago

Looks like there are 16 wires for each core in this module?

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