Csm Configuration - Asus WS C621E SAGE Series Manual

3.5.10

CSM Configuration

This item 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
This option allows you to enable or disable CSM Support.
Configuration options: [Disabled] [Enabled]
The following items appear only when you set the CSM Support to [Enabled].
GateA20 Active
This allows you to set the GA20 option.
[Upon Request]
[Always]
Option ROM Messages
This allows you to set the display mode for option ROM.
Configuration options: [Force BIOS] [Keep Current]
INT19 Trap Response
This option allows you to control the BIOS reaction on INT19 trapping by Option ROM.
[Immediate]
[Legacy only]
Boot Option filter
This option allows you to control the Legacy/UEFI ROMs priority.
Configuration options: [UEFI and Legacy] [Legacy only] [UEFI only]
Network / Storage / Video
This option allows you to control the execution of UEFI and Legacy PXE/ Storage/
Video OpROM.
Configuration options: [UEFI ] [Legacy]
Other PCI devices
This item determines the OpROM execution policy for devices other than Network,
Storage, or Video.
Configuration options: [UEFI ] [Legacy]
3-12
GA20 can be disabled using BIOS services.
D o not allow disabling GA20; this option is useful when any RT
code is executed above 1MB.
Execute the trap right away.
Execute the trap during legacy boot.
Chapter 3: BIOS Setup