Advantech AIR-200 User Manual page 46

3.2.2.14 CSM Configuration
Feature
CSM Support
Gate A20 Active
INT19 Trap Response
Boot option filter
Network
Storage
Video
Other PCI devices
AIR-200 User Manual
Option Description
Disabled
Enable/Disable CSM support
Enabled
'Upon Request' - Gate A20 can be disabled
with BIOS services.
Upon Request
'Always' - Gate A20 cannot be disabled.
Always
Note: This feature is useful if runtime code
above 1MB is executed.
Set BIOS reaction on INT19 trapping by option
ROM:
Immediate
'Immediate' - Executes the trap right away.
Postponed
'Postponed' - Executes the trap during legacy
boot.
UEFI and Legacy
This option controls Legacy/UEFI ROMS prior-
Legacy only
ity
UEFI only
Do not launch
Controls the execution of UEFI and Legacy
UEFI
PXE OpROM
Legacy
Do not launch
Controls the execution of UEFI and Legacy
UEFI
Storage OpROM
Legacy
Do not launch
Controls the execution of UEFI and Legacy
UEFI
Video OpROM
Legacy
Do not launch
Determines OpROM execution policy for
UEFI
devices other than Network, Storage, or Video
Legacy
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