PC-MOS / 386 v501 was an MS-DOS clone that was quite successful in the late 80’s. Created by The Software Link, we could run WordPerfect, or play Doom. Also, it could run most protected-mode applications standard DOS and 386, is optimized for the Intel 80386 processor.
MS-DOS version is now open source
Roeland Jansen, one of its creators, still had the source code for PC-MOS on tape and had obtained permission from other owners to relaunch the operating system, with open source, to make it possible to feel the experience again.
The release includes the x386 assembler and C source code, executable files, a 3.5 “boot floppy image and a CD-ROM driver, as indicated on zdnet.com.
7 Apps to Experience Apple Augmented Reality
They recommend running the operating system using the Unix / Linux dd command to create a boot image from the floppy disk image. Then we can run it on the VMWare or Oracle VirtualBox workstation, although we can always use a computer from the 80’s that still works, of course, using a 3.5 “physical floppy drive.
The newly released code is under GPL, and comment that to compile it we will need the Borland C ++ 3.1 compiler of 1992, although others may still work.
If you want to start the adventure, you have the code on GitHub.