Bull Novascale R423-E2, Installation And User Manual, Page: 65 / 146

Chapter 5: Advanced Serverboard Setup
5-31
CMOS Clear
JBT1 is used to clear CMOS. Instead of pins, this "jumper" consists of contact
pads to prevent accidentally clearing the contents of CMOS. To clear CMOS, use
a metal object such as a small screwdriver to touch both pads at the same time to
short the connection. Always remove the AC power cord from the system before
clearing CMOS.
Note: For an ATX power supply, you must completely shut down the system, remove
the AC power cord and then short JBT1 to clear CMOS.
Watch Dog Enable/Disable
Watch Dog (JWD) is a system monitor that can reboot the
system when a software application hangs. Close Pins 1-2
to reset the system if an application hangs. Close Pins 2-3
to generate a non-maskable interrupt signal for the ap
-
plication that hangs. See the table on the right for jumper
settings. Watch Dog must also be enabled in the BIOS.
Watch Dog
Jumper Settings (JWD)
Jumper Setting Definition
Pins 1-2 Reset (default)
Pins 2-3 NMI
Open Disabled
A: Clear CMOS)
B: Watch Dog Enable