ADLINK Technology COM Express cExpress-BT2, User Manual

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BIOS Setup
7.4.1.1. Boot Configuration > CSM Parameters
Feature Options Description
Compatibility Support
Module Configuration
Info
CSM Support Enabled
Disable
Enable/Disable CSM Support.
CSM16 Module Version Info only
GataA20 Active Upon Request
Always
Upon Request – GA20 can be disabled using BIOS
services.
Always – do not allow disabling of GA20; this option
is useful when any RT code is executed above 1MB.
Option ROM Messages Force BIOS
Keep Current
Set display mode for Option ROM.
INT19 Trap Response Immediate
Postponed
BIOS reaction on INT19 trapping by Option ROM:
Immediate - execute the trap right away;
Postponed – execute the trap during legacy boot.
Boot option filter
UEFI and Legacy
Legacy only
UEFI only
This option controls legacy/UEFI ROM priority.
Option ROM execution order Info only
Network Do not launch
UEFI only
Legacy only
Controls the execution of UEFI and legacy PXE
OpROM.
Storage Do not launch
UEFI only
Legacy only
Controls the execution of UEFI and legacy storage
OpROM.
Video Do not launch
UEFI only
Legacy only
Controls the execution of UEFI and legacy video
OpROM.
Other PCI devices UEFI only
Legacy only
Determines OpROM execution policy for devices
other than network, storage or video.