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What I found really interesting about the 6502 reverse engineering is how instructions are sequenced and what the PLA contains. That way some bugs and undocumen
by Vogtinator 6y ago
What I found really interesting about the 6502 reverse engineering is how instructions are sequenced and what the PLA contains. That way some bugs and undocumented/illegal opcodes could be explained (https://www.pagetable.com/?p=39 https://www.pagetable.com/?p=39). I read that the 8086 uses some more "random logic" for some simpler instructions, but I'd really like to know how the more complex instructions (stosb, iret) look internally. I assume that needs some good understanding of all the other parts first though.