19
2
19
bIoS Select Jumper: bIoS_SeleCT
The jumper is used to select a BIOS
ROM to boot from. You can refer to
the following table for reference.
How to recover BIOS
When one of BIOS has been dam-
aged, you can use another work-
able BIOS to boot to DOS.
Then switch the jumper to change
to your bad BIOS.And then run the
“AFUDOS” reflash program.
Discharge Battery Jumper: VBAT_DISCHARGE
Resetting the CMOS isn’t always good enough since in more recent chipset versions some
configuration settings stored in the Southbridge will not be reset or deleted by a CMOS reset.
Additionally the CMOS reset can take up to several minutes depending on the board design and
capacitance. To facilitate a complete configuration reset this jumper can be used to discharge the
battery. The effect is identical to removing the battery. The result is a faster and complete CMOS
and Southbridge configuration reset.
Definition
Description
Function
1-2(default)
Set Pin 1 and Pin 2 closed
Select SPI1 (BIOS ROM 1)
2-3
Set Pin 2 and Pin 3 closed
Select SPI2 (BIOS ROM 2)
Besides you are doing the BIOS recovery procedure, don’t change the jumper setting
when system is power on.
C
A
U
T
IO
N
!
VBAT_DISCHARGE
1
2
3
Normal
(Default)
1
2
3
VBAT_DISCHARGE
■
Disconnect the power cable before adjusting the jumper settings.
■
Do not discharge the battery while the system is turned on.
■
Only suggest to use the jumper if a normal CMOS reset did not work.
C
A
U
T
IO
N
!
(Default)
1
2
3
1
2
3
BIOS_SELECT
SPI 1
SPI 2
