SBC35-427/BIOS Settings
v1.0
www.winsystems.com
Page 24
Feature
Description
Choices
Default
Quiet Boot
Enables/disables quiet boot. Enabling this option
hides the BIOS post messages on bootup and
displays the AMI BIOS logo. This logo is configurable
for custom OEM applications. Contact a
WINSYSTEMS Applications Engineer at 1-817-274-
7553 for more information.
Enable.
Disable
Disable
Setup Prompt
Timeout
Sets the number of seconds to wait for the setup
activation key. A value of 65535 (0xFFFF) means
indefinite waiting.
1 to 65535
1
Bootup NumLock
State
Selects the default keyboard NumLock state.
On, Off
On
OS Selection
Selects the target operating system. Other menu
options may change based on the OS selection. This
is proper behavior.
Windows,
Linux, MS-
DOS
Windows
Real Time Option Enables/disables the following real time features:
•
L2 cache partitioning to decrease access latency
•
PCIE packet prioritization based on traffic class
•
Hardware-assisted time synchronization
RT Disabled,
RT Enabled
RT Disabled
Boot Option
Priorities
All bootable options are listed in the order of boot priority. The list can be
rearranged to the desired boot device order.
•
Fast Boot
Enables/disables the Fast Boot features, which
shorten the normal boot path for booting into an OS
rapidly. Most device probes are skipped to reduce
boot time.
Enable.
Disable
Disable
•
New Boot
Option Policy
Controls the placement in the boot order of newly
detected UEFI boot options. If default is selected, a
new device is moved to the bottom of the boot
priority list but in front of the UEFI shell. Other
options are the top or the bottom of the list.
Default,
Place First,
Place Last
Default
•
CSM Support Enables/disables Compatibility Support Module
(CSM), which provides legacy BIOS compatibility by
emulating a BIOS environment, allowing legacy
operating systems and some option ROMs that do
not support UEFI to still be used.
Enable.
Disable
Disable
•
Primary IGFX
Boot Display
Selects the video device which will be activated
during POST. Secondary boot display selection
appears based on your selection.
NOTE:
This option is only available when CSM
Support is enabled.
Auto,
Display Port
1, Display
Port 2, LVDS
Auto
•
GateA20
Active
Enabling the Gate-A20 line is an early step that a
protected-mode x86 operating system does in the
bootup process.
•
Upon Request - can be disabled using BIOS ser-
vices.
•
Always - GA20 never disabled; this option is use-
ful when any RT code is executed above 1 MB.
NOTE:
This option is only available when CSM
Support is enabled.
Upon
Request,
Always
Upon
Request
•
INT19 Trap
Response
Specifies the timing for executing an INT19 trap. INT
19h is a low-level system command normally used
just after POST to boot the OS.
•
Immediate - execute the trap right away.
•
Postponed - execute the trap during legacy
boot.
NOTE:
This option is only available when CSM
Support is enabled.
Immediate,
Postponed
Immediate
