Update

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3. A3,B3 - Intermittent system hangs during BIOS memory testing when power
cycle testing
Problem: Systems may intermittently hang during BIOS memory testing as a result of the internal RCOMP state
machine colliding with BIOS induced RCOMP cycle.
Implication: System hang may occur during boot-up or resume from S3. No other failures have been identified or
reported. Issues are resolved with a BIOS workaround.
Workaround: Please refer to your Intel representative for BIOS workaround details.
Status: There are no plans to fix this erratum in silicon.
4. A4,B4 - AGP PCI Write to system memory may be corrupted
Problem: Display corruption or a system hang may result if an upstream AGP FRAME#-based PCI write crosses a
32-byte aligned boundary. Note that upstream AGP FRAME#-based PCI writes which cross a 32-byte
aligned boundary are expected to be rare.
Implication: The issue may cause display corruption or a system hang. With the workaround implemented, Intel has
done extensive validation and expects less than 3% impact on system performance.
Workaround: A BIOS workaround is available which disconnects upstream AGP FRAME#-based PCI writes to
system memory at 32-byte aligned boundaries. Please refer to your Intel representative for BIOS
workaround details.
Status: There are no plans to fix this erratum in silicon.
5. A5,B5 - AGP write failure when ECC memory is enabled.
Problem: Memory corruption or system hang may result if an AGP semantic write cycle targets a cache line in the
AGP aperture window at the same time a PCI semantic write cycle from another PCI device is targeting
the same cache line if ECC memory is enabled.
Implication: If ECC memory is enabled, data corruption or system hang may result.
Workaround: No workaround available. ECC memory will not be supported when using an AGP graphics device.
Status: There are no plans to fix this erratum in silicon.
Intel
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852GME/852PM Specification Update 11