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2.7.6
CSM16 Parameters
Allows you to configure the CSM (Compatibility Support Module) items to fully support the
various VGA, bootable devices and add‑on devices for better compatibility.
CSM Support [Enabled]
Configuration options: [Disabled] [Enabled]
GateA20 Active [Upon Request]
[Upon Request] GA20 can be disabled using BIOS services.
[Always]
Do not allow disabling GA20. This option is useful when any RT code is
executed above 1MB.
Option ROM Messages [Force BIOS]
[Force BIOS]
The third‑party ROM messages will be forced to display during the boot
sequence.
[Keep Current]
The third‑party ROM messages will be displayed only if the third‑party
manufacturer had set the add‑on device to do so.
Interrupt 19 Capture [Enabled]
Set to [Enabled] to allow the option ROMs to trap Interrupt 19. Configuration options:
[Disabled] [Enabled]
Boot Device Control [UEFI and Legacy OpROM]
Allows you to select the type of devices that you want to boot up. Configuration options:
[UEFI and Legacy OpROM] [Legacy OpROM only] [UEFI only]
Option ROM execution order
Boot from Network Devices [Both, Legacy OPROM first]
Allows you to select the type of network devices that you want to launch. Configuration
options: [Ignore] [UEFI only] [Legacy only] [Both, Legacy OPROM first] [Both, UEFI
first]
Boot from Storage Devices [Both, Legacy OPROM first]
Allows you to select the type of storage devices that you want to launch. Configuration
options: [Ignore] [UEFI only] [Legacy only] [Both, Legacy OPROM first] [Both, UEFI
first]]
Launch Video OPROM policy [Both, Legacy OPROM first]
Configures the execution of UEFI and Legacy Video OPROM. Configuration options:
[Ignore] [UEFI only] [Legacy only] [Both, Legacy OPROM first] [Both, UEFI first]
Boot from PCI-E/PCI Expansion Devices [Both, UEFI first]
Allows you to select the type of PCIe/PCI expansion devices that you want to launch.
Configuration options: [Legacy only] [Both, UEFI first]
ASUS J1800M-A / J1900M-A
2‑23
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