Advantech ASMB-584G2-00A2E User Manual page 70

Figure 3.33 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.
ASMB-584 User Manual 58