M/PC – A Concatenative OS
caminanteblanco
54 points
8 comments
July 06, 2026
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Discussion Highlights (5 comments)
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.
MrEricSir
Not to be confused with MPC, apparently: https://en.wikipedia.org/wiki/Multimedia_PC
f47204
maybe I am dumb, but I don't really get how this is different to just piping between commands?
chirsz
Does this name come from reversing "CP/M"?
mtdewcmu
Looks like the hardware this runs on has only 64 KB RAM.