Intel Pentium 4 Processor Specification Update

Errata
68 Specification Update
Status: For the steppings affected, see the Summary Tables of Changes.
104. Debug Status Register (DR6) Breakpoint Condition Detected Flags
May be set Incorrectly
Problem: The Debug Status Register (DR6) may report detection of a spurious breakpoint
condition under certain boundary conditions when either:
• A "MOV SS" or "POP SS" instruction is immediately followed by a hardware
debugger breakpoint instruction, or
• Any debug register access ("MOV DRx, r32" or "MOV r32, DRx") results in a
general-detect exception condition.
Implication: Due to this erratum the breakpoint condition detected flags may be set incorrectly.
Workaround: None identified.
Status: For the steppings affected, see the Summary Tables of Changes.
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