ASMB-585 User Manual 58
3.3.15 CSM Configuration
Figure 3.19 CSM16 Parameters
GateA20 Active
This items is useful When RT code is executed above 1MB. When this it's set as
"UPON RQUEST", GA20 can be disabled using BIOS services. When it's set as
"Always", it does not allow disabling GA20.
Option ROM Messages
“Force BIOS or Keep Current” to set the display mode for Option ROM
INT19 Trap Response
This item is a BIOS reaction on INT19 trapping by Option ROM. When it's set as
"Immediate", the trap will be executed right away. When it's set as "Postponed",
the trap will be executed 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 execution of OpROM policy for devices other than Nework, Stroage
or Video.
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