Remember me, why else do I need a #pdp11 ?

a copy of #unix v4 was found on an old magnetic tape at the university of utah.. you can download it from archive (dot) org - i brought it back to life with an #openbsd #pdp11 emulator:

In the tradition of John Lions' Commentary on 6th Edition Unix (and also the xv6 educational OS from MIT), there's now a commentary on the recently recovered V4 Unix system written by Briam Rodriguez:

https://github.com/unix-v4-commentary/unix-v4-source-commentary

#unix #pdp11 #retrocomputing #OS #johnlions

🎉 Wow, breaking news: in 2025, someone actually found something from 1973 and thought, "Hey, let's patch this museum piece!" 🚀 Instead of living in the digital present, our hero is #LARPing as a '70s #UNIX Dev on a PDP-11 emulator. 🕶️ Buddy, maybe next you'll fix your abacus?
https://sigma-star.at/blog/2025/12/unix-v4-buffer-overflow/ #breakingnews #retrocomputing #PDP11 #techhistory #HackerNews #ngated

От PDP-11 до Windows: как кросс-компилировать ретро-код на macOS без машины времени

Гайд по кросс-компиляции для ретро-платформ на macOS с Apple Silicon. Описаны настройка и использование: Open Watcom v2 — для DOS (16/32-бит), OS/2, Windows 3.x/9x/NT, с примерами сборки .com, .exe и функцией для переключения таргетов в shell. Amsterdam Compiler Kit (ACK) — компиляция ANSI C под PDP-11, с запуском крестиков-ноликов на Unix Version 7 в эмуляторе open-simh (включая создание лент, mkfs, restor, mknod). msvc-wine — полноценный MSVC-тулчейн для Windows (x86/x64/arm64) через LLVM Clang и LLD, без MinGW-зависимостей. Дополнительно: тестирование через Wine, DOSBox-X, OrbStack; фиксы для Apple Silicon. Подробные шаги по сборке, установке и примерам. Интересно? Велком внутрь.

https://habr.com/ru/articles/982928/

#кросскомпиляция #ретрокомпьютинг #PDP11 #Unix_V7 #Apple_Silicon #DOS #ACK #MSVC #Open_Watcom #macos

Having just read some #PDP11 assembler code, and similar in #m68k, #sparc, and #i386, my big take-away was that literally everything in computing would have been better in a world where #Zilog won.

🎩 Ah, the grand tour of ancient computer relics! 🖥️ Witness the #UNIX Fourth Edition, a veritable museum of cryptic file names and extinct hardware references that only your great-grandfather's PDP-11 would appreciate. 📜 Because nothing says "cutting-edge tech" quite like digging through a virtual attic of tar files and tape images. ⌛️
http://squoze.net/UNIX/v4/README #ancientcomputers #FourthEdition #techhistory #PDP11 #digitalmuseum #HackerNews #ngated

Anybody here who can tell me how this ps command in #Unix V4 on #simh #pdp11 works?
Regardles what I try I always get "No mem":
# ps
No mem

#RetroComputing #UNIX #OperatingSystem #PDP11

Magnetic tape containing #UNIX V4 from 1973 has been found at the University of Utah School of Computing. Anyone wanting to compile, build and run this OS will need either a DEC PDP-11 or an emulator.

https://discuss.systems/@ricci/115747843169814700

After more than half a century, UNIX v4 tape has been found in the University of Utah, and is now live in the Internet Archive!

#Unix #UNIXv4 #DEC #PDP11 #simh #Retrocomputing #TechNews #TechUpdates #OldUnix

https://officialaptivi.wordpress.com/2025/12/23/unix-fourth-edition-tape-has-been-recovered/

So it's back to 1974 on my @VoidLinux box as well ...

#unixv4
#simh
#pdp11
#classiccomputers

/etc/rc used to be a small shell script that you added commands to if you wanted them run at startup. It remained simple through 7th Ed. After that it exploded into the SysV style mess that was eventually replaced with the unnamed horror.

The recently recovered UNIX V4 /etc/rc:

rm -f /etc/mtab
chdir /tmp
rm -f [a-t]* [x-z]* v*
chdir /
/etc/update

("cd" was "chdir", which is still the name of the system call in linux. /etc/update forks and runs in the background, doing a "sync" on all mounted drives every 30 seconds.)

An example 7th Edition /etc/rc:

PATH=/bin:/usr/bin
echo "Restricted rights: Use, duplication, or disclosure
is subject to restrictions stated in your contract with
Western Electric Company, Inc." >/dev/console
rm /etc/mtab
cat /dev/null >/etc/utmp
/etc/mount /dev/rp3 /usr
rm -f /usr/spool/lpd/lock
: /etc/accton /usr/adm/acct
rm -f /usr/tmp/*
rm -f /tmp/*
/etc/update
date >/dev/console
/etc/cron

#RetroComputing #Unix #PDP11

A harrowing tale with a happy ending. 😨

https://www.youtube.com/watch?v=qjqPT89KaCc

#retrocomputing #davesgarage #pdp11 #unix

Using VSCode to Create a Commodore C64 BASIC Interpreter
#VSCode #OpenAICodex #Commodore64 #CBMBASIC #PDP11 #211BSD #RetroComputing #CProgramming #VintageComputing #DevTools
https://theoasisbbs.com/using-vscode-to-create-a-commodore-c64-basic-interpreter/?feed_id=7105&_unique_id=694174487035a

Happy DEC 11 !

#DigitalEquipmentCorporation #DEC #PDP11 #RetroComputing

#RetroComputing Meetup @cbase
Freitag, 05.12. ab 20 Uhr
in der c-base, Rungestraße 20, 10179 Berlin

Offener #VintageComputing Stammtisch

Bei einem Getränk reden wir über Themen von #Zuse bis #Amiga, egal ob #Atari, #Commodore, #Apple oder #PDP8-#PDP11 - Hauptsache alte Rechner

Run Ancient Unix: Finally an app that makes sense 🥸😻#unix #pdp11

From: @nixCraft
https://mastodon.social/@nixCraft/115570319801145028

👴🤖 Someone finally figured out that what modern hardware really needs is a dose of vintage UNIX for PDP11! Because why use cutting-edge tech when you can spend your day pretending it's 1970? 🤦‍♂️✨
https://github.com/felipenlunkes/run-ancient-unix #vintageUNIX #PDP11 #retrocomputing #technostalgia #hardwareinnovation #HackerNews #ngated

After a year hiatus because of family problems i finally released my The Seventies Board! 🥳

The board, hard and software, is fully open source, no obligation to buy something. Retro for the masses, not for the classes!

If you want to find out more, check out these links:

Github: https://github.com/bastetfurry/TheSeventiesBoard
HaD.io: https://hackaday.io/project/204447-the-seventies-board

There is currently a groupbuy going on on Forum64:
https://www.forum64.de/index.php?thread/159630-sammelbestellung-the-seventies-board-beta/

#pdp11 #z80 #retro #rp2040