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Hardware Setup
Step 10. Power-On by PS/2 Keyboard Jumper (JP1)
You can choose to enable the Power-On by PS/2 Keyboard function
by shorting pin 2-3 on jumper JP1, otherwise, short pin 1-2 to
disable this function.
Support Power-
On
by Keyboard
Disable Power-
JP1 Setting
On by PS/2
Keyboard
function
(short pin 1-2)
Note: When using the Power-On by PS/2 Keyboard function, please
make sure the ATX power supply can take at least 720mA load on
the 5V Standby lead (5VSB) to meet the standard ATX specification.
Step 11. Set JP3 for power up FSB clock and AGP
bus clock.
JP3 is used to adjust AGP bus clock frequency depending on the
value of the front side bus (FSB) clock, also the setting of the JP3
determines the power up FSB clock which will remain effective until
the BIOS set the FSB clock to the CMOS setting.
JP3 Setting
Power up FSB
Clock
AGP Clock
Note: The specification of maximum AGP bus Clock
frequency is 66.6MHz.
∗ Set JP3 to pin 1-2 short when you use a FSB 100MHz CPU.
∗ Set JP3 to pin 2-3 short when you use a FSB 66MHz CPU.
∗ Set JP3 to pin 1-2 short when you use a FSB 66MHz but want
to over-clock the FSB clock to 100MHz via the BIOS setting.
All manuals and user guides at all-guides.com
Disable
Enable Power-
On by PS/2
3
Keyboard
2
function
1
(short pin 2-3)
3
2
1
66MHz
AGP Clock =
FSB Clock ÷ 1
25
SY-6IBM
Enable
3
2
1
3
2
1
100MHz
AGP Clock =
FSB Clock ÷ 1.5
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