Specifications

50 Product Errata
25759 Rev. 3.79 July 2009
Revision Guide for AMD Athlon™ 64 and AMD Opteron™ Processors
90 False IC Machine Check Overflow Error Logged On Reset
Description
If a processor cold or warm reset occurs during a precise window when the instruction cache is being
accessed due to a branch re-direct, a false IC Machine Check Overflow error may be logged in the IC
Machine Check Status register.
Potential Effect on System
System operation is not compromised, but a false machine check overflow error (bit 62) may be
reported in the IC Machine Check Status register.
Suggested Workaround
After a cold or warm reset, BIOS should clear the IC Machine Check Status register if the valid bit in
that register is 0.
Fix Planned
Yes