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Re:How a CPU works: Bare metal C on my RISC-V toy CPU by erichocean on Thursday January 26, 2023 @05:22PM (#34539717)
This is written for young people, but still accurate: Code: The Hidden Language of Computer Hardware and Software by Charles Petzold

Link: https://www.amazon.com/Code-Language-Computer-Hardware-Softw...

It's got a very slow, methodical onramp with a lot of diagrams and a light, breezy style. You end up building a (very simple) computer in the end, including instruction processing.

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