CHAINTECH 6VIA6, User Manual

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Hardware Setup
9
Clear CMOS Data (JP1)
To clear the contents of the CMOS, please follow the steps
below.
1. Disconnect the system power supply from the power source.
2. Set the jumper cap at location 2~3 for 5 seconds, then set it back
to the default position.
3. Connect the system's power and then start the system.
4. Enter BIOS's CMOS Setup Utility and choose Load Setup
Defaults. Type Y and press enter.
5. Set the system configuration in the Standard CMOS Setup
menu.
Frequency Ratio Setting (JP2)
This feature allows you to set a CPU at a
higher frequency clock ratio than it's speci-
fication allows. it may or may not run at that
ratio, depending on the quality of your CPU
and the extent to which the ratio has been
overset.
External Clock Frequency (JP3/JP4)
This jumper allows the system bus frequency to be determined
either by CPU or the user. If set both JP3/JP4 pins to 1-2, the CPU
determines the system bus frequency speed. Set both JP3/JP4 pins
to 2-3 for 66MHz FSB, set only JP4 pins to 2-3 for 100MHz FSB
and leave JP4 pins open and set JP3 pins to 1-2 or 2-3 for 133MHz
FSB.
Onboard Audio (JP5)
This function allows you to enable or disable the on board
audio. You must set the jumper cap to pins 1-2 to enable or
set pins 2-3 to disable this function.
CD-ROM Audio-in (CN2)
Use the audio cable enclosed with your CD-ROM disk drive to
connect the CD-ROM to your mainboard. This will enable your
CD-ROM's audio function.
Pin Definition
1~2 Normal (default)
2~3 Clear CMOS Data
This option will not work with
frequency lock CPU.
L
1
R
GND
RATIO 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8
7~8 SHORT SHORT SHORT SHORT SHORT SHORT OPEN OPEN OPEN OPEN OPEN
5~6 SHORT OPEN SHORT OPEN SHORT OPEN SHORT OPEN SHORT OPEN SHORT
3~4 SHORT SHORT OPEN OPEN OPEN OPEN SHORT SHORT SHORT SHORT OPEN
1~2 OPEN OPEN SHORT SHORT OPEN OPEN SHORT SHORT OPEN OPEN SHORT
FSB JP3 JP4
Auto 1~2 1~2
66 2~3 2~3
100MHz Open 2~3
133MHz1~2 or 2~3 Open
Pin Definition
1~2 Enable (default)
2~3 Disable