VIA 693/693A Twin Processor Mainboard
INSTALLATION
3-19
(H) JP100 / JP133: Over Clock Selection
JP100 and JP133 are designed to choose the CPU FSB clock (Front Side Bus
Clock). Basically, when you have installed the CPU onto the mainboard, this
mainboard will detect the CPU type and specify the proper FSB clock for the CPU.
So most of the time you need not to make any setting to select the FSB clock.
However, sometimes you may feel like to select different FSB clock for some
special purpose. In this case, you may use the BIOS setting to select different FSB
clock or use the jumper setting on JP100/JP133 to force your CPU to use the
selected FSB clock.
(Please do not attempt to change this setting unless you are
the technician)
. Please refer to the following for functional description.
+
1
2
3
4
JP100
1 2
3
4
JP133
1 2
3
4
This mainboard is designed by using either VIA 693 or 693A chipset. When VIA693 is
installed on the mainboard, you will see only JP100 on the board and you can use it to
tell the mainboard to use the choosen FSB clock in the following table despite the CPU
installed on the mainboard. If you found the VIA693A chipset installed on the
mainboard, then you will see both JP100 and JP133 on the board and you can refer to
the following table to select different FSB clock:
When 693 chipset is installed onboard:
JP 100
FSB CLOCK
Pin1 - Pin2
Pin3 - Pin4
Auto
Short
Open
66MHz
Open
Short
100MHz
Open
Open
133MHz
Open
Open
