Found a link to the floppy disc head alignment on the MoHP https://www.hpmuseum.org/forum/thread-22003-post-189057.html#pid189057

Links to stories about the TENEX and TOPS-20 operating systems

See README.me for instructions to set up uu{en,de}code for transferring data between emulated v7 and the host system.

The Language-theoretic approach (LangSec) regards the Internet insecurity epidemic as a consequence of ‘ad hoc’ programming of input handling at all layers of network stacks, and in other kinds of software stacks.  LangSec posits that the only path to trustworthy software that takes untrusted inputs is treating all valid or expected inputs as a formal language, and the respective input-handling routines as a ‘recognizer’ for that language.
The recognition must be feasible, and the recognizer must match the language in required computation power.

Found on the TUHS mailing list https://www.tuhs.org/pipermail/tuhs/2024-May/029846.html

DJGPP is a complete 32-bit C/C++ development system for Intel 80386 (and higher) PCs running DOS. It includes ports of many GNU development utilities. The development tools require a 80386 or newer computer to run, as do the programs they produce. In most cases, the programs it produces can be sold commercially without license or royalties.
See also https://en.wikipedia.org/wiki/DJGPP
Found on https://cscope.sourceforge.net/index.html

The first article I bookmarked, "The Berkeley Software Distribution" appears to have a few errors, e.g. job control vs C-z suspend/resume
Announced on https://www.tuhs.org/pipermail/tuhs/2024-February/029381.html

See also https://www.abortretry.fail/p/work-at-the-mill, a history of Digital Equipment Corporation. Found via https://oylenshpeegul.gitlab.io/blog/posts/20250208/ on 2025-02-28

Neo6502 is small computer with USB keyboard host and HDMI/DVI output.
Found on https://fosdem.org/2024/schedule/event/fosdem-2024-2093-neo6502-in-the-matrix-open-source-hardware-and-software-modern-retro-computer-with-software-defined-architecture/

This file, jargon.txt, was maintained on MIT-AI for many years, before being published by Guy Steele and others as the Hacker's Dictionary. Many years after the original book went out of print, Eric Raymond picked it up, updated it and republished it as the New Hacker's Dictionary. Unfortunately, in the process, he essentially destroyed what held it together, in various ways: first, by changing its emphasis from Lisp-based to UNIX-based (blithely ignoring the distinctly anti-UNIX aspects of the LISP culture celebrated in the original); second, by watering down what was otherwise the fairly undiluted record of a single cultural group through this kind of mixing; and third, by adding in all sorts of terms which are "jargon" only in the sense that they're technical. This page, however, is pretty much the original, snarfed from MIT-AI around 1988. -- jpd.

See also https://www.dourish.com/quotes.html and https://www.dourish.com/goodies/

Found on https://mumble.net/

Was mentioned several times on the TUHS and/or COFF mailing lists, I found
https://news.slashdot.org/story/23/07/29/192248/building-a-better-server-oxide-computer-ships-its-first-rack
https://blog.jessfraz.com/post/born-in-a-garage/
The book recommendations on https://blog.jessfraz.com/post/books/ look interesting

See also https://hubris.oxide.computer/ for Hubris, a small open-source operating system for deeply-embedded computer systems written in Rust.