CPU Settings for 66MHz Bus

Clock Speed

Mult

JP11

JP12

JP13

JP14

 

 

 

 

 

 

233MHz

x3.5

ON

OFF

OFF

ON

 

 

 

 

 

 

266MHz

x4

OFF

ON

ON

ON

 

 

 

 

 

 

300MHz

x4.5

OFF

ON

OFF

ON

 

 

 

 

 

 

333MHz

x5

OFF

OFF

ON

ON

 

 

 

 

 

 

CPU Settings for 100MHz Bus

Clock Speed

Mult

JP11

JP12

JP13

JP14

 

 

 

 

 

 

350MHz

x3.5

ON

OFF

OFF

ON

 

 

 

 

 

 

400MHz

x4

OFF

ON

ON

ON

 

 

 

 

 

 

450MHz

x4.5

OFF

ON

OFF

ON

 

 

 

 

 

 

The above clock speed settings control only the clock multiplier. 233MHz corresponds to 3.5x; 266MHz corresponds to 4x, etc. The bus speed is BIOS selectable. Tyan does not recommend operating CPUs, memory or the PCI bus at higher than rated speed. Tyan takes no responsibility for any problems related to overclocking any bus or component on the system board.

CMOS Reset

 

JP3

 

 

Default

1-2

 

 

Reset CMOS

2-3

 

 

ONBOARD

To reset CMOS settings place JP3 on pins 2-3 for 5 seconds, then replace it to the default pins 1-2 setting again for normal operation.

JP3

JP11, JP12, JP13, JP14

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Tyan Computer InterServe 90 manual CPU Settings for 66MHz Bus, CPU Settings for 100MHz Bus