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Undocumented 8086 instructions, explained by the microcode

leshokunin

The idea of a delta between what’s known in a public cpu, and what’s documented is pretty frightening to me. I hadn’t considered this could be a thing. I always assumed it was simply doing what’s advertised. Naively.

kens

I don't know why my article from a couple of years ago has been resubmitted, but I'm here for any questions...

mdaniel

it's a constant: https://xkcd.com/1053/

linkly-linky: https://news.ycombinator.com/item?id=36751399 - Jul 2023 (99 comments)

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