M/PC: A Unique Concatenative Operating System for Varvara Without a File Browser

M/PC – A Concatenative OS

M/PC: A Unique Concatenative Operating System for Varvara Without a File Browser

I created M/PC, a concatenative operating system for Varvara inspired by Openfirmware, designed to manage files without a traditional file browser. Using postfix notation, it allows users to navigate folders and launch ROMs via a single command prompt or simple controls. Files can store reusable command sequences, and the system even supports drawing custom wallpapers on boot.

M/PC is a concatenative operating system for Varvara, inspired by Openfirmware, designed to manage files on system without a file browser.
  1. benj111

    Is this not more of a shell than an os?

    Nevertheless an interesting idea. Unix pipes are basically concatenative, I've often thought how much mileage you could get out of going more in this direction.

    Having said that. This has a lot of forth in it. (Dup, over, rot) I'm not sure the forth way, of passing options in the stack would necessarily work so well in a shell.

  2. chirsz

    Does this name come from reversing "CP/M"?

  3. sph

    Great work as usual.

    I wish I were half as productive as Devine Lu Linvega. Perhaps I should get a sailboat and spend my time hacking without distraction, but I am not a fan of the seas.

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2026-07-07