Setting the jumpers

The system board jumpers let you change several system functions. Jumpers are set to the default positions at the factory. You may need to change the jumper settings to perform the following functions:

•Set processor/bus speed settings

•Clear CMOS memory

Processor speed jumper

The system board supports a range of processor speeds, which are set by changing jumpers. If you upgrade your processor, you may need to change jumper settings. The Processor Speed jumper (JP22) configuration block lets you set the processor speed.

The system automatically detects the bus speed supported by the processor and uses the jumper settings in conjunction with the detected bus speed to set the processor speed. If two processors are present and they support different speeds, the system operates at the slower speed. Move the jumper shunts on jumper block JP22 to connect the jumper pins according to the table below. Processor speeds are given in relation to bus speeds of 66MHz/100MHz.

Installing Components 33