16
JP7: Flash BIOS Enable/Disable Jumper
The mainboard BIOS is stored on an Erasable Programmable Read Only
Memory (EPROM) chip. This means that you can erase the current BIOS
and install an updated BIOS whenever new upgrades are released. See
Chapter 4 for information on using the Flash BIOS utility. Before erasing
the old BIOS and flashing a new BIOS, you must set JP7 to Enable.
After the new BIOS is installed, set JP7 to Disable so that the BIOS
cannot be erased by accident.
Function
Jumper Cap
Enable flash BIOS
Short pins 1-2
Disable flash BIOS
Short pins 2-3
JP9: 133MHz System Bus Frequency Select Jumper
Use this 3-pin jumper to set the system bus frequency. In the normal
setting, the system automatically selects the correct frequency according
to the kind of processor installed. In the Force 133 MHz setting, the
system uses a 133 MHz system bus even if the processor is designed to
operate with a 100 MHz bus.
Function
Jumper Cap
Normal
Short pins 1-2
Force 133MHz
Short pins 2-3
Note: When both JP4 and JP9 have the 2-3 pins shorted, the
board is set to force a 66 MHz FSB processor to run on a 133
MHz system bus.
JP7
1 2 3
JP9
1 2 3
