Vecow MTC-7000 Series User Manual page 52

4.3.14 CSM Configuration
Figure 4-3-14 : CSM Settings
CSM Support
Enable/Disable CSM Support.
GateA20 Active
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.
INT19 Trap Response
BIOS reaction on INT19 trapping by Option ROM :
IMMEDIATE - execute the trap right away;
POSTPONED - execute the trap during legacy boot.
HDD Connection Order
Some OS require HDD handles to be adjusted, i.e. OS is installed on drive 80h.
Boot option filter
This option controls Legacy/UEFI ROMs priority.
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, Storage,
or Video.
©Vecow MTC-7000 User Manual BIOS SETUP 45