VIA 693/693A Twin Processor Mainboard
INSTALLATION
3-20
When 693A chipset is installed onboard:
JP 100
JP133
FSB CLOCK
Pin1 - Pin2
Pin3 - Pin4
Pin1 - Pin2
Pin3 - Pin4
66MHz
Open
Short
Open
Short
100MHz
Open
Open
Open
Short
133MHz
Open
Open
Open
Open
Note:
1.
JP100 and JP133 will have no function unless "Default" is
selected in the "CPU HOST CLOCK" in the BIOS setup
program ( refer to Section. 4-6 ). Please do not to make
jumper setting on JP100 and JP133 unless you are the
professional technician.
2.
When "Default" is selected, you may use JP100/JP133 to
select different speed of CPU clock and force your CPU to use
that clock speed instead of letting the system BIOS to select
the CPU clock automatically.
(I) SWITCH SETTINGS
There is one "toggle switch" designed on the mainboard to select the CPU clock
ratio. Basically, you have to check your CPU carefully because some of the CPU
does not allow you to change its default clock ratio setting. In another word. the
switch setting on the mainboard will make no change when you are using the
processor whose clock ratio is "specified and locked" inside the CPU.
1
2
3
4
ON
SW
(toggle switch)
+
1
2
3
4
