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PCI/ISA System Board
Off: the speed ratio
is 2/3 (Default)
J13 Speed
Off
Off
Off
O n
O n
O n
Note:
Please refer to your CPU specifications for the CPU
internal speed and then determine the appropriate speed
ratio. Selecing a higher system (external) bus speed
would enhance the I/O performance.
Jumpers J2, J3, J4, J8, J11, J12, J19, J20, J21, J22, J23, J24, J25
The jumpers below are for factory testing only and
should always be set to their default configurations.
Reconfiguring these jumpers will cause problems with
your system board.
J2, J3, J4 and J20: 2-3 On
J8, J11, J12, J21, J22, J23, J24 and J25: On
J19: Off
2-20 u Installation Overview
On: the speed ratio
System (External)
Ratio
Bus Speed
2/3
50MHz
2/3
60MHz
2/3
66MHz
1/2
50Mhz
1/2
60MHz
1/2
66MHz
is 1/2
CPU Internal
Speed
75MHz
90MHz
100MHz
100MHz
120MHz
133MHz
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