Advantech AIIS-3400 User Manual page 51

3.2.2.13 CSM Configuration

Compatibility Support Module Configuration
– CSM Support
Enable/Disable CSM Support.

CSM16 Module Version
– GateA20 Active
Upon Request - GA20 can be disabled using BIOS services. Never allow dis-
abling of GA20; this option is useful when any RT code is executed above
1MB.
– Option ROM Message
Set 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.

Option ROM execution
– 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, Stor-
age or Video.
Figure 3.17 CSM Configuration
39 AIIS-3400/3410 User Manual