Chapter 4: AMI BIOS
4-15
Onchip SCU Option ROM
Select Enabled to support the onboard SCU Option ROM to boot up the system via
a SCU device. The options are Disabled and
Enabled
.
SCU Port 0~SCU Port 3
: The AMI BIOS will automatically detect the presence of
a SCU port and display the status of this port as detected.
PCIe/PCI/PnP Configuration
PCI ROM Priority
Use this feature to select the Option ROM to boot the system when there are mul-
tiple Option ROMs available in the system. The options are EFI Compatible ROM
and
Legacy ROM
.
PCI Latency Timer
Use this feature to set the latency Timer of each PCI device installed on a PCI bus.
Select 64 to set the PCI latency to 64 PCI clock cycles. The options are 32,
64
, 96,
128, 160, 192, 224 and 248.
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
.
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, 256 Bytes, and 512 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.
