Morrow systems ran on a Unix flavor, could address 16MB all on Z80, had memory protection and could have up to 6 simultaneous users. Micronix was the only Unix-

Morrow systems ran on a Unix flavor, could address 16MB all on Z80, had memory protection and could have up to 6 simultaneous users. Micronix was the only Unix-like multiuser system ever to run on an 8 bit processor. https://ia902902.us.archive.org/20/items/mame0.211manualsfullset/mpz80.pdf https://ia902902.us.archive.org/20/items/mame0.211manualsful...