norgitov/ trends
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Back to discovery/Lobsters9 hours ago

Why is the x86 undefined instruction called ud2? Why 2?

The x86 undefined instruction is named ud2, but the reason for the '2' in its name is not explained in the provided text.

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Tracking sinceSeptember 14, 202661 source points

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Momentum+2.95/hover 1.02 h
PublishedSeptember 14, 2026eranb
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