Supero Supero X9DBS-F, User Manual

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Chapter 4: AMI BIOS
4-17

PCIe/PCI/PnP Configuration
Launch Storage OpROM Policy
This feature selects the Storage Option ROM to be used to bootup the system
when there are multiple Storage Option ROMs available. The options are UEFI
Only and
Legacy Only .
PCI Latency Timer
Use this feature to set the latency timer for each PCI device installed on a PCI bus.
Select 64 to set the PCI latency to 64 PCI clock cycles. The options are 32 PCI
Bus Clocks,
64 PCI Bus Clocks , 96 PCI Bus Clocks, 128 PCI Bus Clocks, 160 PCI
Bus Clocks, 192 PCI Bus Clocks, 224 PCI Bus Clocks, and 248 PCI Bus Clocks.
PERR# Generation
Select Enabled to allow a PCI device to generate a PERR number for a PCI Bus
Signal Error Event. The options are Enabled and
Disabled
.
SERR# Generation
Select Enabled to allow a PCI device to generate an SERR number for a PCI Bus
Signal Error Event. The options are Enabled and
Disabled .
Maximum Payload
Select Auto to allow the system BIOS to automatically set the maximum payload
value for a PCI-E device to enhance system performance. The options are
Auto ,
128 Bytes and 256 Bytes.
Maximum Read Request
Select Auto to allow the system BIOS to automatically set the maximum read request
size for a PCI-E device to enhance system performance. The options are
Auto , 128
Bytes, 256 Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
ASPM Support
This feature allows the user to set the Active State Power Management (ASPM)
level for a PCI-E device. Select Auto to allow the system BIOS to automatically
set the ASPM level for the system. Select Disabled to disable ASPM support. The
options are
Disabled and Auto.
Warning : Enabling ASPM support may cause some PCI-E devices to fail!
Above 4G Decoding (Available if the system supports 64-bit PCI decoding)
Select Enabled to decode a PCI device that supports 64-bit in the space above 4G
Address. The options are Enabled and
Disabled .