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Product Errata 83

Revision Guide for AMD Athlon™ 64 and AMD Opteron™ Processors

25759 Rev. 3.79 July 2009

131 Systems May Deadlock Waiting for a Probe Response

Description

Under a highly specific and detailed set of internal timing conditions, the Northbridge System

Request Queue (SRQ) may stall a probe response leading to a deadlock.

Potential Effect on System

Deadlock or a machine check error due to a watchdog timer time-out.

Suggested Workaround

BIOS should set NB_CFG Register[20] (MSR C001_001Fh). No loss of performance results from

this workaround.

Systems implementing the workaround for erratum 169 should not apply this workaround.

Fix Planned

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AMD Athlon 6 Specifiche Pagina 83