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Cores in space: The core memory module from a 1980 Spacelab computer

Ken Shirriff Blog · published 30 August 2026

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Books and some interesting stuff I read in August 2026 Read at the source ↗
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https://static.righto.com/images/cimsa-memory/core-stack.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/spacelab.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/computer-and-memory.jpg
static.righto.com
https://spectrum.ieee.org/the-vacuum-tubes-forgotten-rival
spectrum.ieee.org
https://static.righto.com/images/cimsa-memory/core-diagram.jpg
static.righto.com
https://archive.org/details/digital_computer_components_and_circuits/page/n183/mode/1up
archive.org
https://static.righto.com/images/cimsa-memory/lvdc-core-stack.jpg
static.righto.com
https://www.eol.ucar.edu/content/alabama-sightseeing-images
eol.ucar.edu
https://static.righto.com/images/cimsa-memory/core-closeup2.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/matrix.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/matrix-diodes.jpg
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https://static.righto.com/images/cimsa-memory/diode-board-x.jpg
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https://static.righto.com/images/cimsa-memory/core-board-labeled.jpg
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https://static.righto.com/images/cimsa-memory/core-closeup.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/matrix-board-labeled.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/sense-wires.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/sense-crossing.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/core-angles2.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/x-connections.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/driver-board.jpg
static.righto.com
https://static.righto.com/images/cimsa-memory/interface-HMCL.jpg
static.righto.com
https://bsky.app/profile/righto.com
bsky.app
https://www.youtube.com/curiousmarc
youtube.com
https://www.righto.com/p/index.html
righto.com
https://airandspace.si.edu/collection-objects/spacelab-laboratory-module/nasm_A19990001000
airandspace.si.edu
https://www.esa.int/About_Us/50_years_of_ESA/Spacelab-1_40_years_on
esa.int
https://www.britannica.com/topic/Spacelab
britannica.com
https://commons.erau.edu/cgi/viewcontent.cgi?article=2820&context=space-congress-proceedings
commons.erau.edu
Reverse engineering circuitry in a Spacelab computer from 1980 Read at the source ↗
righto.com
https://ntrs.nasa.gov/api/citations/19790007875/downloads/19790007875.pdf
ntrs.nasa.gov
https://youtu.be/oJbgcbedHhI?si=nfj9DFGlKb_l-BkX&t=1618
youtu.be
https://youtu.be/oJbgcbedHhI?t=1629
youtu.be
https://static.righto.com/images/cimsa-memory/eevblog.jpg
static.righto.com
https://youtu.be/oJbgcbedHhI?t=2278
youtu.be
https://www.computerhistory.org/revolution/memory-storage/8/253/984
computerhistory.org
The first microcomputer: The transfluxor-powered Arma Micro Computer from 1962 Read at the source ↗
righto.com
https://amzn.to/4yaPedW
amzn.to
https://archive.org/details/bitsavers_siliconGenliconGeneralProductCatalog_43940822/page/n494/mode/1up
archive.org
https://static.righto.com/images/cimsa-memory/diode-array.jpg
static.righto.com
https://www.electronicsurplus.com/motorola-inc-mc1103p-core-driver-diode-array
electronicsurplus.com
https://static.righto.com/images/cimsa-memory/sense-amp.jpg
static.righto.com
https://bitsavers.org/components/national/_dataBooks/1975_National_Interface_Integrated_Circuits.pdf
bitsavers.org
https://ieeexplore.ieee.org/document/4038821
ieeexplore.ieee.org
https://en.wikipedia.org/wiki/IBM_2361_Large_Capacity_Storage
en.wikipedia.org
https://en.wikipedia.org/wiki/Right-hand_rule
en.wikipedia.org
https://en.wikipedia.org/wiki/Amp%C3%A8re%27s_circuital_law
en.wikipedia.org
https://static.righto.com/images/cimsa-memory/overall-topology.jpg
static.righto.com
http://bitsavers.informatik.uni-stuttgart.de/components/ti/_dataBooks/1977_TI_Memory_Interface_Data_Book.pdf
bitsavers.informatik.uni-stuttgart.de
https://static.righto.com/images/cimsa-memory/SN55325.jpg
static.righto.com
https://www.righto.com/2015/08/examining-core-memory-module-inside.html
righto.com
https://www.righto.com/2019/04/a-look-at-ibm-s360-core-memory-in-1960s.html
righto.com
https://www.righto.com/2020/03/the-core-memory-inside-saturn-v-rockets.html
righto.com
https://www.righto.com/2019/01/inside-apollo-guidance-computers-core.html
righto.com
https://klabs.org/DEI/Processor/shuttle/oneill_94.pdf
klabs.org
The rise and fall of IBM's 4 Pi aerospace computers: an illustrated history Read at the source ↗
righto.com