Greaseweazle allows versatile floppy drive control over USB. Read and write your vintage floppy disks from your PC/Linux/Mac computer. This USB device lets you to connect an old floppy disk drive to your modern computer to read/write floppy disks from any system with Shugart standard drives (Amiga, Atarí, Commodore, Amstrad, Sinclair, PC, CNC machines, musical instruments, industrial equipment, and more.)

By extracting the raw flux transitions from a drive, any disk format can be captured and analyzed. The Greaseweazle also supports writing to floppy disks, from a range of image file formats including those commonly used for online preservation (ADF, IPF, DSK, IMG, HFE, …).

Greaseweazle V4 is the latest version, updated for mass production and with the following features:

Reads and writes 3″, 3.5″, 5.25″, 8″ disks (with suitable drive and cable)
Buffered outputs, for communicating with older 5.25″ and 8″ disk drives
Integrated power connector for directly powering most 3.5″ disk drives
Write-enable jumper can be removed for safer preservation of precious vintage disks
Supports floppy-modded 5.25″ drives
Supports Disk-Change detection as used by Rob Smith’s integration into the WinUAE Amiga emulator
3 user-definable outputs (eg. 8″ interface REDWC signal)
100% factory tested, and tested again by me before shipping

Found via https://www.tuhs.org/pipermail/tuhs/2023-January/027510.html

Hardware to emulate the SPI memory in PCs to speed up the development of free BIOS firmware.
Found on the Oberon mailing list.
See also the articles about retrocomputing and security, e.g. https://trmm.net/Cosign/

Found via https://groups.google.com/g/lispcore/c/S3JKR_k_uKY
See also https://tumbleweed.nu/r/bug-lispm/forumpost/546e31bb40 for the announcement "System 100.0 is now released!"

Blog, mostly about network-related things. Found via https://www.tuhs.org/pipermail/tuhs/2023-March/028267.html
Time is an illusion, Unix time doubly so... https://www.netmeister.org/blog/epoch.html
Sharing Secrets https://www.netmeister.org/blog/sharing-secrets.html

After reading https://forums.theregister.com/forum/all/2022/05/06/pi_pico_transputer_code/, I was looking for information related to transputers and found this page.

The point-to-point technology to link transputers was formalised in the IEEE 1355 standard. This was further developed under the ESA into SpaceWire, which is now designed into a number of space missions under development in Europe, the USA and Japan. A key player in developing SpaceWire was Paul Walker from the transputer team whose company, 4Links, is now selling SpaceWire test equipment.

XMOS mentioned on the page can be found on https://www.xmos.ai

Mentioned on the Interlisp mailing list.

Besides "VM and the VM Community: Past, Present, and Future", which I have started to read, it also has other documents, including "What Mother Never Told You About VM Service, 1983", which was mentioned in
https://www.tuhs.org/pipermail/tuhs/2022-December/026996.html
"What Mother Never Told You" is still the best document about system maintenance ever written.

Found via https://www.tuhs.org/pipermail/tuhs/2022-September/026476.html

Found via https://www.hpmuseum.org/forum/thread-18562-post-162245.html#pid162245
Located in Germany, close to Frankfurt am Main, it has a number of historic computers, calculators and other electronic devices, many of them still working.

Collection of links with information about, simulators of and software for the pdp-10.