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Reverse engineering the 386 processor's prefetch queue circuitry

Ken Shirriff · 2025-05-10 Cached

Detailed reverse engineering of the 386 processor's prefetch queue circuitry, explaining the incrementer, alignment network, and dynamic logic used.

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#circuitry

Notes on the Pentium's microcode circuitry

Ken Shirriff · 2025-03-31 Cached

A detailed examination of the Pentium processor's microcode ROM, describing its structure, capacity, and how microcode implements machine instructions at the hardware level.

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