2 ms·
There was and it ran on quite well on 286 systems. It started out as Concurrent CP/M-86 but evolved into Concurrent DOS. It was able to run simple MSDOS program
by VogonPoetry 4y ago
There was and it ran on quite well on 286 systems. It started out as Concurrent CP/M-86 but evolved into Concurrent DOS. It was able to run simple MSDOS programs and eventually ran from a FAT filesystem. This OS came from Digital Research. The wikipedia page has a lot more info. https://en.wikipedia.org/wiki/Multiuser_DOS https://en.wikipedia.org/wiki/Multiuser_DOS.