Olivetti M20 technical specifications:

Press reveal:	March 31, 1982 (Agliè Castle, Italy)
Processor:	Zilog Z8001
Clock speed:	4MHz
RAM:	128KiB expandable up to 512KiB
ROM:	8KiB containing the startup and boot program
Operating systems:	PCOS, CP/M8000, MS-DOS (with the APB 8086 card)
Screen:	B/W, Green, Amber, 4 or 8 colors
Graphic resolution:	512x256 pixels
Text layout:	80x25 or 64x16 characters
Disk drives:	One or two 160KiB-320KiB-640KiB on 5"1/4 drives
Hard disk:	Optional 11.5MiB Winchester
Installed interfaces:	RS232 and Parallel (Centronics), with proprietary connectors
Optional interfaces:	Double RS232 (normal and current-loop) and IEEE488
Monitor signals	TTL, VSync 68.2 Hz HSync 18.7573 kHz

Page log

January 30, 2023 - Added the refresh frequencies.
December 23, 2022 - Added the date of the press release.
July 2005 - First version of this page.

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