I've released a UX/RT demo image. It includes banner and Hunt the Wumpus from the BSD games package, and runs from the filesystem built into the boot image (no disk filesystem support yet) uxrt.org youtu.be/AVrGQYPbGco andreww591.blogspot.com/2026/08/my-o...
Andrew Warkentin
@andreww591.bsky.social
OS/emulator developer and OS historian. Developer of UX/RT, an open-source QNX-like OS. Curator of the Virtual OS Museum, the world's largest collection of pre-installed emulated OSes: https://virtualosmuseum.org/
Got sash working a bit better under UX/RT. Had to fix various issues (mostly filesystem-related) that I didn't catch with the previous hardcoded tests
UX/RT finally runs a shell, although many of the commands are currently broken. Once I get more of them working I will release a proof-of-concept binary image and add it to the OS museum.
Installed the KERNAL for the Commodore LCD, an abandoned prototype laptop based on somewhat similar hardware and software to their other 8-bit machines, although unlike their other machines it boots into a TUI shell instead of straight into BASIC
Added EDX, one of the OSes for the IBM Series/1 minicomputer, to the OS museum
UX/RT now runs a test program that makes a few VFS calls
Added EOS 3, a German CP/M-compatible OS for the Sharp MZ-3500
I've also managed to get UX/RT running some dummy user programs (one hangs, and the other tries to jump to 0xdeadbeef to produce a distinctive fault)
Added UniPlus+ SVR2 for the Torch Triple X, a low-end 68010-based workstation roughly comparable to the AT&T Unix PC and contemporary with it
Added MPL OS, a Unix-like hobby OS for the X68000 (which uses executables in Human68k format)
I've also released an updated version of the base OS museum VM, which includes all the new installations, as well as enabling 4-core SMP for QEMU (which I somehow forgot before). The jumpy pointer with OpenGL has been fixed as well (by disabling the "hardware" cursor)
I've also updated both IRIX images (5.3 and 6.5.22m) to run in IRIS, which is at least an order of magnitude faster than MAME, and is actually usable even on a relatively slow host, unlike MAME, which was basically a slideshow on my main PC (which is quite old)
Also installed OPUS for the Litton EBS 1231, which was a very low-end office computer from the late 60s and early 70s, from what was formerly Royal McBee, better known for the LGP/RPC machines
Added plusBASIC for the Aquarius+ to the OS museum. The Aquarius+ is a modern enhanced clone of the short-lived Mattel Aquarius home computer, based on a Z80, an FPGA for I/O devices, and an ESP32
Added J OS 051231 to the OS museum. This is the second-oldest version of TempleOS available as a disk image, dating back to the end of 2005, long before it was called TempleOS
Started adding new OS images to the Virtual OS Museum. First is Unite, a QNX-like OS from the late 80s and early 90s, somewhat resembling a 32-bit version of QNX 2 (predating 32-bit support in QNX itself by several years), although it's not a direct clone jacquesmattheij.com/unite-operat...
A new bug fix release of the Virtual OS Museum is now available. No new installations yet, but I've fixed most of the issues people were having virtualosmuseum.org youtu.be/J7qbblRw5JY andreww591.blogspot.com/2026/06/a-ne...
The Virtual OS Museum
Over 1,700 pre-installed operating systems spanning 1948 to today, in a single Linux VM. Bundled QEMU, VirtualBox, and UTM. One-click launchers for Windows and Linux.
virtualosmuseum.org
Other people have already posted about it here, but I have now released the Virtual OS Museum. Sorry for the issues with downloads before; the server I was hosting it on had a failing drive. I now have torrents and direct downloads from archive.org linked on the site virtualosmuseum.org
The Virtual OS Museum
Over 1,700 pre-installed operating systems spanning 1948 to today, in a single Linux VM. Bundled QEMU, VirtualBox, and UTM. One-click launchers for Windows and Linux.
virtualosmuseum.org
Decided I'd make a Bluesky account. Currently I am working on getting UX/RT (gitlab.com/uxrt/uxrt-to...) to the point where it runs a shell, as well as writing a GUI launcher and a site for the Virtual OS Museum (virtualosmuseum.org). I am hoping to have both done within the coming few months
uxrt / uxrt-toplevel · GitLab
Top-level source directory for UX/RT
gitlab.com