IBASE Technology MI992, User Manual

Page: 69 / 93

BIOS Setup
MI992
User’s Manual
61
4
4.4.9 CSM Configuration
BIOS Setting Description
CSM Support Enables / Disables CSM support.
GateA20 Active
•
Upon Request disables GA20 when using
BIOS services.
•
Always cannot disable GA20, but is useful
when any RT code is executed above 1 MB.
Option ROM
Messages Sets display mode for Option ROM.
Options: Force BIOS, Keep Current
INT19 Trap Response Sets how BIOS reacts on INT19 trap by Option
ROM.
•
Immediate executes the trap right away.
•
Postponed executes the trap during legacy
boot.
Boot option filter Controls the priority of Legacy and UEFI ROMs.
Options: UEFI and Legacy / Legacy only / UEFI
only
Network Controls the execution of UEFI and Legacy PXE
OpROM.
Options: Do not launch / Legacy