Chapter 2
P5I848P
15
BIOS-Protection Jumper (BIOS_WP)
The BIOS of the mainboard is inside the FWH. If the jumper BIOS_WP is set as
closed, the system BIOS is protected from being attacked by serious virus such as
CIH virus, you will be unable to flash the BIOS to the mainboard in this status.
The DMI (Desktop Management Interface) system information such as the CPU type/
speed, memory size, and expansion cards will be detected by the onboard BIOS and
stored in the flash ROM. Whenever the system hardware configuration is changed, DMI
information will be updated automatically. However, setting jumper BIOS_WP as closed
makes flashing BIOS and updating DMI information impossible. Therefore, set BIOS_WP
as open when changing the system hardware configuration, or the error message “Un-
known Flash Type” will be displayed on the screen, and DMI information may not be
updated.
BIOS_WP
Flash Write
Disabled
Flash Write
Enabled
Jumper Settings
Jumpers are located on the mainboard, the clear CMOS jumper CLR_CMOS, enable
keyboard password power-on function jumper JKB etc. Pin 1 for all jumpers are located
on the side with a thick white line (Pin1
→
), referring to the mainboard’
s
silkscreen. Jumpers with three pins will be shown as
to represent pin1 & pin2
(“1-2”) closed and
to represent pin2 & pin3 (“2-3”) closed.
Jumper Symbol Description Represent
1-2
set pin1 and pin2 closed
2-3
set pin2 and pin3 closed
close set the pins closed
open set the pins opened
