IBASE SI-38N - Manual (Page 36)

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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.
Option ROM Messages
Set display mode for Option ROM. Options are Force BIOS and Keep Current.
INT19 Trap Response
Enable: Allows Option ROMs to trap Int 19.
Boot Option Priorities
Sets the system boot order.
CSM parameters
OpROM execution, boot options, filter, etc.
Aptio Setup Utility
Main Advanced Chipset Boot Security Save & Exit
→ ← Select Screen
↑↓ Select Item
Enter: Select
+- Change Field
F1: General Help
F2: Previous Values
F3: Optimized Default
F4: Save
ESC: Exit
Launch CSM Always
Boot option filter UEFI and Legacy
Launch PXE OpROM policy Do not launch
Launch Storage OpROM policy Legacy only
Launch Video OpROM policy Legacy only
Other PCI device ROM priority Legacy OpROM
Launch CSM
This option controls if CSM will be launched.
Boot option filter