User Guide

Hardware Installation
2-8
JP4 & JP5 & JP6
1 2 3
JP6
JP5
JP4
60MHz
JP4 & JP5 & JP6
1 2 3
JP6
JP5
JP4
75MHz
JP4 & JP5 & JP6
1 2 3
JP6
JP5
JP4
66MHz
JP4 & JP5 & JP6
1 2 3
JP6
JP5
JP4
83.3Mz
Warning: INTEL TX chipset supports only
60/66MHz external CPU bus clock, the 75/83.3
MHz settings are for internal test only, set to
75/83.3MHz exceeds the specification of TX
chipset, which may cause serious system damage.
Caution: Following table are possible settings of
current CPU available on the market. The correct
setting may vary because of new CPU product,
refer to your CPU specification for more details.
Warning: Cyrix 6x86 P200+ uses 75MHz external
clock, the jumper setting shown on the table below
is for user's convenient. It may cause serious
system damage to use 75MHz clock.
INTEL
Pentium
CPU Core
Frequency
Ratio External
Bus Clock
JP1 & JP2 & JP3 JP4 & JP5 & JP6
P54C 90 90MHz = 1.5x 60MHz 1-2 & 1-2 & 1-2 1-2 & 2-3 & 1-2
P54C 100 100MHz = 1.5x 66MHz 1-2 & 1-2 & 1-2 2-3 & 2-3 & 1-2
P54C 120 120MHz = 2x 60MHz 2-3 & 1-2 & 1-2 1-2 & 2-3 & 1-2
P54C 133 133MHz = 2x 66MHz 2-3 & 1-2 & 1-2 2-3 & 2-3 & 1-2
P54C 150 150MHz = 2.5x 60MHz 2-3 & 2-3 & 1-2 1-2 & 2-3 & 1-2
P54C 166 166MHz = 2.5x 66MHz 2-3 & 2-3 & 1-2 2-3 & 2-3 & 1-2
P54C 200 200MHz = 3x 66MHz 1-2 & 2-3 & 1-2 2-3 & 2-3 & 1-2