Supermicro X13DDW-A User Manual page 139

Chapter 4: UEFI BIOS
MMIO High Base
Use this feature to select the base memory size according to memory-address mapping for
the IO hub. The options are 56T, 40T, 32T, 24T, 16T, 4T, 2T, 1T, 512G, and 3584T.
MMIO High Granularity Size
Use this feature to select the high memory size according to memory-address mapping for
the IO hub. The options are 1G, 4G, 16G, 64G, 256G, and 1024G.
Re-Size BAR Support
Use this feature to enable the Resizable BAR support. Resizable BAR is a PCIe interface
technology that allows the CPU to access the entire frame buffer. With this technology, your
system will be able to handle multiple CPU to GPU transfers simultaneously rather than
queuing to improve the frame rate performance. The options are Disabled and Enabled.
SR-IOV Support
Select Enabled for Single-Root IO Virtualization support. The options are Disabled and
Enabled.
ARI Support
Select Enabled for Alternative Routing-ID Interpretation (ARI) support. The options are
Disabled and Enabled.
Bus Master Enable
If it is set to Enabled, the PCI Bus Driver will enable the Bus Master Attribute for DMA
transactions. If it is set to Disabled, the PCI Bus Driver will disable the Bus Master Attribute
for Pre-Boot DMA protection. The options are Disabled and Enabled.
Consistent Device Name Support
Select Enabled for ACPI_DSM (DSM: Device Specific Method) device name support for
onboard devices and slots. The options are Disabled and Enabled.
NVMe Firmware Source
Use this feature to select the NVMe firmware to support system boot. The options are Vendor
Defined Firmware and AMI Native Support. The default option, Vendor Defined Firmware,
is pre-installed on the drive and may resolve errata or enable innovative functions for the
drive. The other option, AMI Native Support, is offered by the BIOS with a generic method.
VGA Priority
Use this feature to select the graphics device to be used as the primary video display for
system boot. The options are Onboard and Offboard.
For the following features, please note that:
Note 1: The number of slots and slot naming vary based on your motherboard features.
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