SOYO SY-6BA+ IV user manual 66MHz FSB clock CPUs Setting, 100MHz FSB clock CPUs Setting

Hardware Installation SY-6BA+ IV

Step 3. CPU multiplier release Jumper: (JP8)

Closing JP8 can make higher multiplier settings available on some INTEL CPUs. For technical details read the following:

Your Pentium CPU has an input pin B21 (100/66# signal) to tell it at what Front Side Bus (FSB) Frequency it is running; JP8 is connected to this input pin. The actual FSB Frequency is however set through the BIOS and it may therefore differ from the Frequency specified to the CPU through JP8.

Because some INTEL CPUs have their multipliers limited at a FSB Frequency of 100MHz and higher, telling the CPU that it is running at 66MHz though JP8 while setting a different (higher) FSB Frequency in the BIOS may allow the user to set a higher multiplier value. Doing so will however force your CPU to operate out of its specifications, and therefore SOYO can not guarantee the proper functioning of your system.

Refer to the following table:

Mode JP8

66MHz FSB clock CPUs Setting

66MHz FSB clock CPUs must use

this setting

short

1 2

100MHz FSB clock CPUs Setting

Normal	open
1 2
Possible higher multiplier limit	short
1	2

Note: Shorting the jumper will tell the CPU that it is running on 66MHz, this will release more multiplier settings on some INTEL CPUs, but will make the system operate out of its specifications if the actual frequency is 100 MHz or higher.

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