This is what prof Andrew S. Tanenbaum was working on when he made the famous "LINUX is obsolete" post in 1992. At the end of his post:
P.S. Just as a random aside, Amoeba has a UNIX emulator (running in user
space), but it is far from complete. If there are any people who would
like to work on that, please let me know. To run Amoeba you need a few 386s,
one of which needs 16M, and all of which need the WD Ethernet card.
