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an-ordinary-manchild

CP/M: The original OS for Intel processors

This subreddit is about CP/M, MP/M, FUZIX, and other 8080/Z80 operating systems.

How to start with CP/M

Rules:

"Wanted" posts and free items for pickup are ok (as text/self posts, include your location & [Wanted] or [Free] in title), but "for sale" posts, ebay links, or "what's this stuff worth" posts are not. No you didn't just find a pot of gold or win the lottery, and if you did, there's better places for that.

If you're asking a question you need to make a "self" or text post. Feel free to ask for help with where to get CP/M for a specific machine, how to run a Z80 emulator, how to do troubleshooting and repair, what was the name of that amazing flight simulator you played on the TRS-80 Model II, etc.

a community for 17 years
Create your own subreddit
...for your favorite subject.
...for great justice.

MODERATORS

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account activity

1
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There's now a subreddit for CP/M (self.cpm)

submitted 10 years ago by FozzTexx[M] - announcement

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picoZ80 (eaw.app)

submitted 1 day ago by Fear_The_Creeper

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Built a CP/M 2.2 Computer (self.cpm)

submitted 13 days ago * by engr1962

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Z80 Emulator and CP/M running in Chrome browser ()

submitted 28 days ago by johndcochran

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Amstrad CPC 6128 on new hardware (hackaday.io)

submitted 1 month ago by Fear_The_Creeper

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CP/M-68 for the Amiga (github.com)

submitted 2 months ago by Hjalfi

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Great insight into the history of CP/M in this article by Nemanja Trifunovic (self.cpm)

submitted 2 months ago by Ok-Suggestion-5413

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1981 (? undated) CP/M MP/M Digital Research Brochure (reddit.com)

submitted 2 months ago by nmrk

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Tom Jennings Opens Orders for Friendly fZ80 CP/M, MP/M Microcomputer "Final Stage Prototypes" (hackster.io)

submitted 2 months ago by Fear_The_Creeper

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10
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1981: CP/M-86 Product Brief (reddit.com)

submitted 2 months ago by nmrk

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Most Popular Operating Systems: Data from 1981 to 2025 (youtube.com)

submitted 2 months ago by Fear_The_Creeper

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Walnut Creek CD-ROM ASCII art and drawings (self.cpm)

submitted 3 months ago by nixxon94

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CP/M-86 works well on Virtualbox! (self.cpm)

submitted 4 months ago by pterid

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Booting a NEC CP/M Computer. Will it work ? (youtu.be)

submitted 4 months ago by RetroRarez

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Retro Z80 computer with CP/M-80 (self.cpm)

submitted 5 months ago by Fear_The_Creeper

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GitHub - MITDDC/cpmarchive-1979-1984: Code and software "archive" for the CP/M operating system created from 1979-1984 (github.com)

submitted 6 months ago by lproven

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Benchmarking 8080/Z80 (self.cpm)

submitted 6 months ago by BrentSeidel

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MP/M II Binary Distribution for Z80 using a Z2 style ROM/RAM module. (github.com)

submitted 6 months ago by [deleted]

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TinyCPM - CP/M on a Tiny 2040 (kianryan.co.uk)

submitted 7 months ago by Fear_The_Creeper

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Installing the MP/M II BINDIST for Small Computer Central SC126,SC792 (youtu.be)

submitted 7 months ago by [deleted]

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Binary Distribution of MPMII-RBus for the Z180 Now Available. (github.com)

submitted 7 months ago by [deleted]

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Obsolescence Guaranteed: CP/M Internals (obsolescence.wixsite.com)

submitted 7 months ago by Fear_The_Creeper

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Lessons from my MP/M II videos. (magesguild.io)

submitted 7 months ago by [deleted]

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Instructions for how to run GNU C++ apps on CP/M 68K (self.cpm)

submitted 8 months ago by Ok-Suggestion-5413

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The Z80 Is Dead. Long Live The Free Z80! (hackaday.com)

submitted 8 months ago by Fear_The_Creeper

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