Configuration and Setup
EBX-38 Hardware Reference Manual
12
SW1 Switch
Position
Description
Position 3
Reset BIOS to factory defaults (see page 12)
Off
– Normal operation (default)
On – Resets BIOS to factory defaults when the board boots.
Position 4
For factory use only. Always leave in the Off position.
Position 5
SPI Flash Security
– Not supported. Leave in the Off position.
Position 6
BIOS select
Off
– Primary BIOS (default)
On – Backup BIOS
Integrator’s Note:
If a battery is installed
(on the CBR-4005B paddleboard or externally using the J8
connector), switch position 2 must be set to the off position. If it is set to on, the battery will
discharge quickly.
If you don’t use a battery
, switch position 2 should be set to the on position. Otherwise, boot
times could increase (by as much as 30 seconds in low temperature environments).
R
ESETTING THE
BIOS
TO
F
ACTORY
D
EFAULTS
Reset the BIOS to default settings using the following the instructions:
1. Power off the EBX-38and set SW1 switch position 3
to the On position (toward the center of the board).
2. Power on the EBX-38.
3. After the system boots, power off the EBX-38 and set
the switch back to the Off position (toward the outer
edge of the board).
4. Power on the EBX-38.
C
LEARING
RAM
AND
RTC
R
EGISTERS
Clear RAM and RTC registers (which includes the date/time) using the following the
instructions:
1. Power off the EBX-38.
2. Set SW1 switch position 1 to the On position (toward
the center of the board).
3. Wait at least two seconds and set the switch back to
the Off position (toward the outer edge of the board).
4. Power on the EBX-38.
