Advantech ark-3405 User Manual page 54

3.1.2.15 CSM Configuration
 CSM Support
Enable/Disable CSM Support.
 GateA20 Active
UPON REQUEST - GA20 can be disabled using BIOS services. Do not allow
disabling of GA20; this option is useful when any RT code is executed above
1MB.
 Option ROM Messages
Sets the display mode for Option ROM
 INT19 Trap Response
BIOS reaction on INT19 trapping by Option ROM: IMMEDIATE - execute the
trap right away; POSTPONED - execute the trap during legacy boot.
 Boot option filter
This option controls Legacy/UEFI ROMs priority
 Network
Controls the execution of UEFI and Legacy PXE OpROM
 Storage
Controls the execution of UEFI and Legacy Storage OpROM
 Video
Controls the execution of UEFI and Legacy Video OpROM
 Other PCI devices
Determines OpROM execution policy for devices other than Network, Storage,
or Video
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