
Chapter 4 BIOS Setup
BM-0947 USER
′
S MANUAL
Page: 4-36
4-6-2. CSM16 Parameters
CSM16 parameters screen
BIOS Setting
Options
Description/Purpose
CSM16 Module
Version
78.d0
CSM version information
GateA20 Active
- Upon Request
- Always
Specifies Gate-A20 logic gate status.
At boot time, Gate-A20 is enabled
when counting and testing of all the
system's memory and disabled before
transferring control to OS.
Option ROM
Messages
- Force BIOS
- Keep Current
Allows the POST screen to display
Option ROM messages.
INT19 Trap
Response
- Immediate
- Postponed
When enabled it allows host adapters
ROM BIOS to capture Interrupt 19
during the boot process and
eventually boot from disk(s)
connected to those adapters.