Avalue Technology EMX-H110KP User Manual page 55

If enable CSM Support:
Item
CSM Support
GateA20 Active
Option ROM Messages
INT19 Trap Response
Boot option filter
Network
Storage
Other PCI devices
Options
Disabled
Enabled[Default]
Upon Request[Default]
Always
Force BIOS[Default]
Keep Current
Immediate[Default]
Postponed
Legacy only[Default]
UEFI only
Do not launch
UEFI
Legacy[Default]
Do not launch
UEFI
Legacy[Default]
Do not launch
UEFI
Legacy[Default]
Description
Enable/Disable CSM Support.
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.
Set display mode for Option ROM.
BIOS reaction on INT19 trapping by Option ROM:
IMMEDIATE – execute the trap right away;
POSTPONED – execute the trap during legacy
boot.
This option controls Legacy/UEFI ROMs priority.
Controls the execution of UEFI and Legacy PXE
OpROM.
Controls the execution of UEFI and Legacy
Storage OpROM.
Determines OpROM execution policy for devices
other than Network, Storage, or Video.
EMX-H110KP User's Manual 55
User's Manual