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carfax · Sep 21, 2025

Designing a trivial CPU, part 2: machine code

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Go to the first post in this series. 
 Introduction 
 I’m designing a small CPU. In the last post, I picked (fairly
arbitrarily) bit-size, registers, addressing modes, and an instruction
set. To recap, that’s: 8 bits; four registers ( x , y , i and j );
four additional indirect modes ( (i) , (j) , k and (k) ), where
 k is an 8-bit constant.

Read on /posts/trivial-processor-part-2/

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