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Specification Update 11
3.
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 Intel 855GM Memory BIOS Specification and BIOS Spec Update for details.
Status: There are no plans to fix this erratum in silicon. For steppings affected, see the Summary Tables of
Changes.
4. Display May Flicker When Integrated Graphics and ECC Support Are Enabled
Problem: Display flicker and flashing may occur when integrated graphics and ECC support are enabled under
certain graphics resolution modes.
Implication: A potentially undesirable amount of display flicker may occur.
Workaround: No workaround available.
Status: There are no plans to fix this erratum in silicon. For steppings affected, see the Summary Tables of
Changes.
5.
Anomalous System Behavior May Occur When AGP GART Size Is 64 MB and
APBASE Bit 27 Is Set
Problem: Incorrect address decoded when AGP aperture size is set to 64 MB and the aperture base has bit 27 set
(e.g. APBASE=0xD8000000 causes failures, but 0xD0000000 is fine).
Implication: Problem may result in anomalous system behavior which can cause a system hang.
Workaround: Use an aperture base size of 128 MB or 256 MB. If using a 64-MB aperture size, set APBASE such that
bit 27 is cleared (e.g. use 0xD0000000 instead of 0xD8000000).
Status: There are no plans to fix this erratum in silicon. For steppings affected, see the Summary Tables of
Changes.
6.
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. For steppings affected, see the Summary Tables of
Changes.