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2.3.2 Processor frequency Selection (JP2)
JP2 is a 2x10-pin jumper block with Easy-jumper cap on it for you to select the processor’s
working speed easily.
233
266
300
333
366
400
Processor
ON
OFF OFF OFF OFF OFF For Pentium ® II 233 MHz
OFF ON
OFF OFF OFF OFF For Pentium ® II 266 MHz
OFF OFF ON
OFF OFF OFF For Pentium ® II 300 MHz
OFF OFF OFF ON
OFF OFF For Pentium ® II 333 MHz
OFF OFF OFF OFF ON
OFF Reserved for 66 MHz x 5.5
OFF OFF OFF OFF OFF ON
Reserved for 66 MHz x 6
Note: This jumper is able to provide more powerful functions, which are reserved for
technician’s special testing purpose only. DO NOT use these functions unless you are an
experienced user and you are willing to take your risk.
Case A. When jumper caps existed on both RS3 & RS4, the JP2 will be functioned as two
group of jumper: External Clock and Multiplier jumper group.
RS1 400
366
333
Multiplier
300
266
233
Ext. Clk
OFF OFF OFF OFF x 2
OFF OFF OFF 66.8M
OFF OFF OFF ON
x 7.5
OFF OFF ON
60M
OFF OFF ON
ON
x 6.5
OFF ON
OFF 75M
OFF ON
OFF ON
x 7
OFF ON
ON
55M
OFF ON
ON
ON
x 6
ON
OFF OFF 68.5M
ON
OFF OFF OFF x 5.5
ON
OFF ON
83M
ON
OFF OFF ON
x 3.5
ON
ON
OFF Reserved
ON
OFF ON
OFF x 4.5
ON
ON
ON
50M
ON
OFF ON
ON
x 2.5
ON
ON
OFF OFF x 5
ON
ON
OFF ON
x 3
ON
ON
ON
OFF x 4
