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ECM-KA User's Manual
3.6.4.1 CSM16 Parameters
Item
GateA20 Active
Option ROM Messages
INT19 Trap Response
62 ECM-KA User's Manual
Option
Upon Request[Default]
Always
Force BIOS[Default]
Keep Current
Immediate[Default]
Postponed
Description
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.
Set display mode for Option ROM.
BIOS reaction on INT19 trapping by Option
ROM: IMMEDIATE – execute the trap right
away; POSTPONED – execute the trap during
legacy boot.
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