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Mystery Cpuid Bit (www.os2museum.com)
22 points by userbinator 2 days ago | 2 comments

• Sweepi 3 hours ago

And people say "never read the comments":

CL says: April 20, 2026 at 9:18 pm

I updated sandpile.org to reflect that

  Bit 19 = MP-capable
  Bit 18 = ECC-capable
Those were two distinct capabilities.

[sources: K7 µcode + K8 XOS-based public simulator published in 2000 + I worked at AMD back then]

• haunter 4 hours ago

That’s the NSA backdoor /s