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Some of the recent Intel microprocessors have the capability of correcting specific hardware bugs by loading a sequence of bits called a “microcode update” into the CPU. This feature is available on all processors in the Intel P6 family, including Pentium Pro, Celeron, Pentium II, Pentium III, Pentium II Xeon, Pentium III Xeon, and the newly released Pentium 4. This feature is applicable to both single-processor and multi-processor (SMP) systems.