PCI Subsystem Settings
The PCI Bus driver version and common settings are displayed, including:
•
PCI Latency Timer
—Displays value programmed into the PCI Latency Timer Registry
•
VGA Palette Snoop
—Enables or disables VGA palette register snooping
•
PERR# Generation
—Enables or disables the PCI device to generate PERR#
•
SERR# Generation
—Enables or disables the PCI device to generate SERR#
•
PCI Express Settings:
◦
Relaxed Ordering
—Enables or disables PCI Express device relaxed ordering
◦
Extended Tag
—Enables user to set the PCI Express device to use an 8-bit tag field as a requester
◦
No Snoop
—Enables or disables PCI Express device No Snoop option
◦
Maximum Payload
—Enables user to set maximum payload of PCI Express device, or allow the
system BIOS to select the value (Auto)
◦
Maximum Read Request
—Enables user to set maximum read request size of PCI Express device
or allow the system BIOS to select the value (Auto)
◦
ASPM Support
—Enables user to set the ASPM level
◦
Extended Synch
—Enables user to allow the generation of extended synchronization patterns.
◦
Link Training Retry
—Enables user to define the number of retry attempts the software will make
to retrain the link if previous training attempt was unsuccessful
◦
Link Training Timeout (uS)
—Enables user to define the number of microseconds the software will
wait before polling 'Link Training' bit in Link Status register. Values range from 10 to 10,000.
◦
Unpopulated Links
—Enables user to set to 'Disable Link' in order to save power by unpopulating
the PCI Express links
◦
Restore PCIE Registers
—Enables user to restore PCI Express device configurations. Enabling
might cause issues with other hardware components.
ACPI Settings
•
Enable ACPI Auto Configuration
—Enables or disables BIOS ACPI auto configuration
•
Enable Hibernation
—Enables or disables the system's ability to hibernate
•
ACPI Sleep State
—Enables user to set the ACPI sleep state
•
Lock Legacy Resources
—Enables or disables the lock of legacy devices' resources
•
S3 Video Repost
—Enables or disables S3 video repost
•
ACPI Low Power S0 Idle
—Enables or disables system wake on alarm event by items settings
S5 RTC Wake Settings
Wake system with fixed time
—Enables or disables system wake on alarm event
CPU Configuration
General CPU configuration values and settings are displayed, including:
•
Hyper Threading
—Enables or disables Intel Hyper Threading technology
•
Active Processor Cores
—Enables user to set the number of processor cores that should be active
•
Limit CPUID Maximum
—Enables user to limit the maximum value of CPUID
•
Execute Disable Bit
—Enables or disables the No-Execution page protection technology
•
Intel Virtualization Technology
—Enables or disables Intel’s virtualization technology
•
Hardware Prefetcher
—Enables or disables the hardware pre-fetcher feature
•
Adjacent Cache Line Prefetch
—Enables or disables the adjacent cache line pre-fetch feature
PCI Subsystem Settings
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