CP/M-80 2.2 (8080)

System · December 2023

CP/M-80 2.2 (8080)

CP/M-80, from Digital Research, was a popular operating system for 8080 and Z80 microcomputers. Each release was customized by OEMs specifically for their hardware.

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L1S754OW5 · December 2023

Where is version 1.x?

khim · December 2023

Nobody knows if even a single copy of CP/M 1.x survived. Even for the Gnat System 10, the first computer system that ever got CP/M, there are only version 2.2.

Remember that back then floppies were valuable and expensive, nobody thought about keeping version 1.x around when much better version was available.

mctpyt · May 2024

Well, source code for 1.x did survive, several versions in fact, as posted by the Computer History Museum: https://computerhistory.org/blog/early-digital-research-cpm-source-code/.
Not sure about binaries, but it should be possible to recreate them from the source.

jonirob · August 2025

CPM-80 2.2 [Sharp X1] running well in the X Millennium Sharp X1 emulator.

Rider · February 13

Should the Release date be 1980?

STONE123456 · August 8

How to run it ?(I can't find a simulator)

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CP/M-80 2.2 (8080)

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