this post was submitted on 26 Oct 2025
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Technology

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Bootstrapping Your Own CPU (programming.dev)
submitted 1 month ago by tengkuizdihar@programming.dev to c/technology@beehaw.org
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Dear community,

Let's just say I'm a country that wants to create my own CPU only using knowledge/tech/techniques that are in the open and nothing proprietary. When I said CPU, let's just say something that can run a C program, and eventually the linux kernel.

Is creating one out of publicly accessed knowledge and resources even possible, and how minuscule the tolerance need to be? Is there even a successful open CPU project out there?

I'm asking this because of an anxiety that I have when knowing only several companies in the world know how to create a CPU.

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[–] realitista@lemmus.org 2 points 1 month ago* (last edited 1 month ago)

As a matter of fact when looking at their own in country manufactured lithography, they are hoping to make a fab that can hit 350nm by 2030. That's the equivalent of a pentium II from 30 years ago. The raspberry pi 5 is a 16nm chip.

They had developed much faster chips but those relied on machines that are now under sanctions so they are trying to build their own sad fab.