Olivetti M20

Olivetti M20
ManufacturerOlivetti
TypePersonal computer
Release date1982 (1982)
Discontinued1984 (1984)
Operating systemPCOS
CPUZilog Z8001 @ 4 MHz
Memory128 KB (expandable to 512 KB)
Graphics512×256
8 colors with 64 KB expansion boards, 4 colors with 32 KB expansion board.
80×25 or 64×16 characters
SuccessorOlivetti M24

The Olivetti M20 is a Zilog Z8000 based computer designed and released by Olivetti in 1982. Although it offered good performance, it suffered from a lack of software due to its use of the Z8000 processor and custom operating system, PCOS. The company introduced the IBM PC compatible Olivetti M24 in 1983 and the M20 line was phased out.