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Appendix C

Jumper Table Summary

Setting the CPU Voltage

CPU Type Vcore S4 S5 S6 S7 S8

INTEL P54C Single Voltage 3.45V OFF ON ON ON OFF

INTEL P55C Dual Voltage 2.8V OFF OFF OFF ON OFF

AMD K5 Single Voltage 3.52V ON ON ON ON OFF

AMD K6-166/200 Dual Voltage 2.9V ON OFF OFF ON OFF

AMD K6-233 Dual Voltage 3.2V OFF OFF ON ON OFF

AMD K6-266/300 Dual Voltage 2.2V OFF ON OFF OFF OFF

AMD K6-2 Dual Voltage 2.2V OFF ON OFF OFF OFF

AMD K6-2 400/450 Dual Voltage 2.4V OFF OFF ON OFF OFF

AMD K6-III Dual Voltage 2.4V OFF OFF ON OFF OFF

Cyrix 6x86 Single Voltage 3.52V ON ON ON ON OFF

Cyrix 6x86L Dual Voltage 2.8V OFF OFF OFF ON OFF

Cyrix M2 Dual Voltage 2.9V ON OFF OFF ON OFF

IDT C6 Single Voltage 3.52V

3.3V

OFF

Warning: Make sure that you have installed CPU fan properly if

Intel PP/MT-233 or AMD K6 is being selected to use. It may

cause your system unstable if you can not meet the heat

dissipation requirement from above CPU. It is recommended to

adopt larger fan on these CPU for better air flow in the system.

Tip: Normally, for single voltage CPU, Vcpuio (CPU I/O Voltage)

is equal to Vcore, but for CPU that needs dual voltage such as

PP/MT (P55C) or Cyrix 6x86L, Vcpuio is different from Vcore

and must be set to Vio (PBSRAM and Chipset Voltage). The

single or dual voltage CPU is automatically detected by

hardware circuit.

Summary of content (4 pages)

PAGE 1
Appendix C Jumper Table Summary Setting the CPU Voltage CPU Type Vcore S4 S5 S6 S7 S8 INTEL P54C Single Voltage 3.45V OFF ON ON ON OFF INTEL P55C Dual Voltage 2.8V OFF OFF OFF ON OFF AMD K5 Single Voltage 3.52V ON ON ON ON OFF AMD K6-166/200 Dual Voltage 2.9V ON OFF OFF ON OFF AMD K6-233 Dual Voltage 3.2V OFF OFF ON ON OFF AMD K6-266/300 Dual Voltage 2.2V OFF ON OFF OFF OFF AMD K6-2 Dual Voltage 2.
PAGE 2
Jumper Table Summary Selecting the CPU Frequency S1 S2 S3 OFF ON ON OFF ON ON OFF OFF OFF OFF ON ON OFF ON ON OFF OFF OFF OFF OFF ON ON ON ON CPU CLK 66MHz 68MHz 75MHz 83MHz 95MHz 100MHz 112MHz CPU Frequency Ratio 1.5x (3.5x) 2x 2.5x (1.75x) 3x 4x 4.5x 5x 5.
PAGE 3
Jumper Table Summary INTEL Pentium CPU Core Frequency Ratio External Bus Clock S1 S2 S3 P54C 100 100MHz = 1.5x 66MHz OFF OFF OFF 1-2 & 1-2 & 1-2 & 1-2 P54C 133 133MHz = 2x 66MHz ON OFF OFF 1-2 & 1-2 & 1-2 & 1-2 P54C 166 166MHz = 2.5x 66MHz ON ON OFF 1-2 & 1-2 & 1-2 & 1-2 P54C 200 200MHz = 3x 66MHz OFF ON OFF 1-2 & 1-2 & 1-2 & 1-2 INTEL Pentium MMX CPU Core Frequency Ratio External Bus Clock S1 S2 S3 PP/MT 166 166MHz = 2.
PAGE 4
Jumper Table Summary AMD K5 CPU Core Frequency Ratio External Bus Clock S1 PR100 100MHz = 1.5x 66MHz OFF OFF OFF 1-2 & 1-2 & 1-2 & 1-2 PR133 100MHz = 1.5x 66MHz OFF OFF OFF 1-2 & 1-2 & 1-2 & 1-2 PR166 116MHz = 1.75x 66MHz ON ON OFF 1-2 & 1-2 & 1-2 & 1-2 AMD K6 CPU Core Frequency Ratio External Bus Clock S1 S2 S3 K6-166 166MHz = 2.5x 66MHz ON ON OFF 1-2 & 1-2 & 1-2 & 1-2 K6-200 200MHz = 3x 66MHz OFF ON OFF 1-2 & 1-2 & 1-2 & 1-2 K6-233 233MHz = 3.