ASRock B650M Pro RS WiFi Software/BIOS Setup Guide - Page 46

PCI Configuration, Above 4G Decoding, Re-Size BAR Support, Above 4GB MMIO Limit, SR-IOV Support

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3.4.2 PCI Configuration Above 4G Decoding Globally enables or disables 64-bit capable devices to be decoded in Above 4G Address Space (only if the system supports 64-bit PCI Decoding). Re-Size BAR Support If system has Resizable BAR capable PCIe Devices, this option enables or disables Resizable BAR Support. Above 4GB MMIO Limit Allows you to select Above 4GB MMIO Limit to 38~43 bits limit. This option works only when "Above 4G decoding" is enabled. Configuration options: [40bit (1TB)] [41bit (2TB)] [42bit (4TB)] [43bit (8TB)] SR-IOV Support If system has SR-IOV capable PCIe Devices, this option enables or disables Single Root IO Virtualization Support. 42

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3.4.2
PCI Configuration
Above 4G Decoding
Globally enables or disables 64-bit capable devices to be decoded in Above 4G Address Space
(only if the system supports 64-bit PCI Decoding).
Re-Size BAR Support
If system has Resizable BAR capable PCIe Devices, this option enables or disables Resizable
BAR Support.
Above 4GB MMIO Limit
Allows you to s
elect Above 4GB MMIO Limit to 38~43 bits limit. °is option works only
when "Above 4G decoding" is enabled.
Configuration options: [40bit (1TB)] [41bit (2TB)] [42bit (4TB)] [43bit (8TB)]
SR-IOV Support
If system has SR-IOV capable PCIe Devices, this option enables or disables Single Root IO
Virtualization Support.