User`s manual

VIA 693/693A Twin Processor Mainboard INSTALLATION

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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.

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SW (toggle switch)

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