Unverified50% confidenceFactExact time
The opcode corresponding to ud2 is 0F 0B.
1
Sources
50%
Confidence
Long-term
Relevance
9/13/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe ud2 instruction in the x86 architecture is used to trigger an Invalid Opcode (#UD) exception.65% similarUnverifiedAlthough ud1 has long existed in processors and similarly triggers #UD, it was once in an ambiguous state of being reserved but not formally committed to, before Intel later incorporated ud1 and ud0 into its official mnemonic system in documentation.59% similarUnverifiedAs of the time of writing, the repository has 0 Stars and 0 Forks, with the primary language listed as HTML.57% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/919434API
curl https://kongchang.com/api/v1/knowledge/claims/919434MCP
get_claim(id=919434)