Mystery Cpuid Bit

(os2museum.com)

23 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