HP xw9400 Service And Technical Reference Manual page 39

Table 3-1 Computer Setup Utility menu descriptions (continued)
Heading Option
Execute
Memory Test
Chipset/
Memory
ENWW
Description
When awakening from the ACPI S3 state, reset IDE hard drive before returning to the OS.
ACPI S3 PS2 Mouse Wake Up (Enable/Disable)
Allow the mouse to awaken the system from the ACPI S3 state.
USB Wake on Device Insertion (Enable/Disable)
Awaken the system from ACPI S3 state on USB device insertion.
System re-boots and executes the memory test.
ECC Support (Enable/Disable)
Enables/disables memory Error Correcting Code (ECC).
Memory Scrubbing (Enable/Disable)
Enables/disables memory ECC scrubbing. If ECC Support is enabled, the scrubbing feature walks
through memory in the background to avoid accumulation of ECC errors in memory. Upon detection
of an ECC error, either during the scrubbing walk-through or during normal processor-to-memory
operation, the scrubbing mechanism corrects the data and writes it back into the corresponding
memory DIMM module.
Memory Node Interleave (Enable/Disable)
This option is valid for dual-processor systems only.
If enabled, BIOS interleaves the memory on CPU0 and CPU1 together. This option requires the
total memory installed on CPU0 (slots 1a/1b/3a/3b) and on CPU1 (slots 2a/2b/4a/4b) to be the
same.
If disabled, BIOS maps the memory connected to CPU0, then the memory connected to CPU1.
The system is then effectively in NUMA mode.
PCI SERR# Generation (Enable/Disable)
Disables PCI SERR# generation for ill-behaved PCI add-in cards that can generate spurious
SERRs.
NET Watchdog Timer (Enable/Disable)
Enables/disables the watchdog timer.
ACPI Bus Segmentation (Enable/Disable)
Enables/disables PCI bus segmentation. Disabling this option may prevent installation issues with
some Linux implementations.
HPET (Enable/Disable)
Enables/disables the High Precision Event Timer. This feature must be enabled to use low power
settings (PowerNow!). Some Linux implementations may require disabling this feature.
Computer Setup (F10) Utility 31