TIL that the #IBMPC didn't come with just #MSDOS. It had *four* operating systems available from the start.

I imagine that's why it was designed to boot from disk, and not a fixed ROM operating system like the #Macintosh.

The four original IBM PC operating systems were:

* #ROM #BASIC
* UCSD p-System, an OS built around a #bytecode interpreter for #Pascal
* CP/M-86, an x86 version of #CPM
* #IBM PC #DOS, a knock-off of CP/M from a little-known company called #Microsoft

#retrocomputing

Four years ago I wrote about a TRS-80 game from a (probably) Scottish author that had character-text errors that made it unplayable. The game is now repaired for the first time, and I play it through and discuss its context as a "learning" game.

https://bluerenga.blog/2026/03/20/the-lazurite-factor-the-repaired-version/

#retrogaming #adventuregame #videogames #textadventure #interactivefiction #trs80 #tandy #gwbasic #msdos

Springtime is knocking at the door, so we did some very early spring-cleaning 🧹

RC-BOX BBS, the world's first (and currently only) Bulletin Board System to run on real RC2014 hardware (Z80 based Homebrew Kit) utilizing oldie-but-goldie CP/M 2.2 has seen a minor update:

- new "read latest bulletin" prompt after login, skip the bulletin if you don't want to read it / already read it

- fixed total line count at message output

- raised max lines per message from 48 to 64 (at 64 columns per message line)

- added some essential software to the file base (for those brave enough to try x/ymodem downloads).

Visit us using your favourite terminal program. Heck, we have no ANSI so even a teletype will do!

connect to: rc2014.ddns.net on TCP port: 2014

#rc2014
#rc2014bbs
#rcbox
#bbs
#CPM80
#Zilog
#Z80

Happy First of Spring from the Tuta Team! 🌞🐝🌸

We've beeeeeeen waiting for the blue skies, sunshine, & team ice cream outings - & now it's finally here. 🥰

5 New Features in Tuta Mail & Calendar You Should Try 🔐

Watch our latest guide on YouTube - try these new features for yourself - then let us know what you think! 

🚀 What’s New

• New Spam Filters
• Thunderbird Add-ons
• Schedule Send
• Undo Send
• Ghost Bubbles in Calendar

Watch it here 👉

Invidilink:https://inv.nadeko.net/watch?v=SP4tBAMHTbw

In 166 days #Android will become a locked-down platform because Google wants to kill Android freedom.

At Tuta, we say NO. Google must keep Android open & free!

Here's how to take action & make your voice heard: 👉 https://keepandroidopen.org/

Here's more info: 👉 https://tuta.com/blog/google-wants-to-kill-android-freedom

#KeepAndroidOpen