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Intel launched the Pentium processor in 1993. Unfortunately, dividing sometimes gave a slightly wrong answer, the famous FDIV bug. Replacing the faulty chips cost Intel $475 million. I reverse-engineered the circuitry and can explain the bug. 1/9

Thomas Spooks 🎃👻💀

do F00F next! :)

F00F isn't a discrete bug. You would end up documenting the whole decoder and pointing out the F00F case isn't handled right.

15/12/24, 3:03 am0 reposts1 like

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