User manual

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23614K—October 2003 AMD Athlon™ Processor Model 4 Revision Guide
Preliminary Information
15 Processor Does Not Support Reliable Microcode Patch Mechanism
Products Affected. A9
Normal Specified Operation. The processor should function properly after a microcode patch is loaded.
Non-conformance. The processor has the patch RAM BIST function disabled. Since BIST is not run on the
patch RAM, reliable operation of the patch RAM cannot be assured. Therefore it should not be used.
Potential Effect on System. When a microcode patch is loaded, the system may not behave properly.
Suggested Workaround. Do not load a microcode patch.
Resolution Status. Fix planned in future revision.