i'm learning so many things about PS/2 keyboards and mice and literally every single thing about them is incredibly poorly designed
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It's even the only way to get N-key rolllover on many modern keyboards, because it turns out the USB keyboard boot protocol was designed by idiots and limits you to 6 keys, while PS/2 doesn't.
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(it's possible to do NKRO over USB, if you break boot protocol compat, but noobdy wants to do that; you can get both with some clever hacks, but it's nontrivial and not documented as a standard)
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I've read it recently that modern keyboards finally support something other than boot protocol as Windows XP support becomes less of an issue, and so that has NKRO.
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