Chapter 4: AMI BIOS
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PCIe/PCI/PnP Configuration
PCI Latency Timer
Use this item to configure the PCI latency timer for a device installed on a PCI bus.
Select 32 to set the PCI latency timer to 32 PCI clock cycles. The options are
32
,
64, 96, 128, 160, 192, 224, and 248 (PCI Bus Clocks).
PERR# Generation
Select Enabled to allow a PCI device to generate a PERR (PCI/PCI-E Parity Error)
number for a PCI bus error event. The options are Enabled and
Disabled
.
SERR# Generation
Select Enabled to allow a PCI device to generate an SERR (System Error) number
for a PCI bus error event. The options are Enabled and
Disabled
.
PCI PERR/SERR Support
Select Enabled to support PERR (PCI/PCI-E Parity Error)/SERR (System Error)
runtime error reporting for a PCI/PCI-E slot. The options are Enabled and
Disabled
.
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
.
SR-IOV (Available if the system supports Single-Root Virtualization)
Select Enabled for Single-Root IO Virtualization support. The options are Enabled
and
Disabled.
Maximum Payload
Select Auto for 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,
256 Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
Maximum Read Request
Select Auto for the system BIOS to automatically set the maximum size for a read
request 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
Use this item to set the Active State Power Management (ASPM) level for a PCI-E
device. Select Auto for the system BIOS to automatically set the ASPM level based
on the system configuration. Select Disabled to disable ASPM support. The options
are
Disabled
and Auto.
Warning
: Enabling ASPM support may cause some PCI-E devices to fail!
