Unverified50% confidenceFactExact time
Although 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.
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.67% similarUnverifiedThe opcode corresponding to ud2 is 0F 0B.59% similarVerified@ai-sdk/vue@3.0.277 synchronously incorporates the changes from the core package ai@6.0.277.52% similarUnverifiedUEFI is a firmware specification led by Intel in the early 2000s, supporting a 64-bit pre-boot environment, graphical interface, secure boot mechanism, and network protocol stack.51% similarUnverifiedio_uring is an asynchronous I/O framework introduced in Linux 5.1.51% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/919436API
curl https://kongchang.com/api/v1/knowledge/claims/919436MCP
get_claim(id=919436)