Supero SUPER PIIIDM3, User Manual

Page: 47 / 98

Chapter 2: Installation
2-13
Installation
CMOS Clear
Refer to Table 2-24 for the jumper
settings to clear CMOS. 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 use JBT1 to clear
CMOS. Replace JBT1 back to the pin 1-2 posi-
tion before powering up the system again. Do
not use the PW_ON connector to clear CMOS.
Table 2-24
CMOS Clear Jumper Settings
(JBT1)
J u m p e r
Position
1-2
2-3
Definition
N o r m a l
C M O S C l e a r
Position
1-2
Position
2-3
Normal
CMOS
Clear
2-7 Jumper Settings
Explanation of
Jumpers
To modify the operation of the moth-
erboard, jumpers can be used to
choose between optional settings.
Jumpers create shorts between two
pins to change the function of the
connector. Pin 1 is identified with a
square solder pad on the printed cir-
cuit board. See the motherboard
layout pages for jumper locations.
C o n n e c t o r
P i n s
J u m p e r
C a p
Setting
Pin 1-2 short
3 2 1
3 2 1
Front Side Bus Speed
Use JP3 to change the FSB speed.
You can also change the CPU
speed with the "CPU Speed at
FSB" setting in BIOS. This setting
w i l l s h o w y o u t h e a c t u a l C P U
speed for each FSB speed option
s e l e c t e d . S e e T a b l e 2 - 2 5 f o r
jumper settings. Note: If the sys-
tem does not reboot after chang-
ing the CPU speed, clear CMOS,
reboot and then set the correct
CPU speed in BIOS.
Table 2-25
Front Side Bus Speed
Jumper Settings (JP3)
J u m p e r
Position
1-2
2-3
O F F
Definition
A u t o
1 3 3 M H z
1 0 0 M H z
* Note: The Auto setting allows
the CPU to set the speed.