Appendix A Jumper Setting Summary CPU Voltage Select JP7 1-2 3-4 5-6 7-8 9-10 11-12 JP9 1-2 & 3-4 Open CPU Core Voltage (Vcore) 3.45V (Intel P54C or IDT C6) 3.52V (Cyrix or AMD K5) 2.9V (AMD K6-166/200 or Cyrix M2) 2.8V (MMX P55C) 3.2V (AMD K6-233) 2.1V (Reserved) JP10 Open JP11 1-2 & 3-4 Open JP12 Open JP8 1-2 3-4 I/O Voltage (Vio) 3.45V (default) 3.52V CPU Type (Vcpuio) Single Voltage CPU Vcpuio = Vcore (default) Dual Voltage CPU Vcpuio = Vio (PP/MT P55C) 1-2 & 3-4 1-2 & 3-4 Warning: The heat dissipation of Intel PP/MT-233Hz, AMD K6-200/233MHz exceed the original design of this mainboard. Please make sure that you have installed CPU fan properly if Intel PP/MT-233 or AMD K6-200/233 is being selected to use. It may cause your system unstable if you can not meet the heat dissipation requirement from above CPU type. It is recommended to adopt larger fan on these CPU for better air flow in the system. CPU Vcore Vio Vcpuio JP7 JP8 JP9 JP10 JP11 JP12 A-1 Jumper Table Summary Type Intel P54C Intel MMX (P55C) AMD K5 (Single voltage) AMD K6166/200 AMD K6-233 Cyrix 6x86 Cyrix 6x86L Cyrix M2 IDT C6 3.45V 2.8V 3.45V 3.45V Vcore Vio 1-2 7-8 1-2 1-2 1-2, 3-4 Open Open 1-2, 3-4 Open 1-2, 3-4 Open Open 1-2, 3-4 Open 3.52V 3.45V Vcore 3-4 1-2 1-2, 3-4 Open 1-2, 3-4 Open 2.9V 3.45V Vio 5-6 1-2 1-2, 3-4 1-2, 3-4 Open 1-2, 3-4 1-2, 3-4 Open 1-2, 3-4 1-2, 3-4 Open 1-2, 3-4 1-2, 3-4 Open 3.2V 3.52V 2.8V 2.9V 3.45V 3.45V 3.45V 3.45V 3.45V 3.45V Vio Vcore Vio Vio Vcore 9-10 3-4 7-8 5-6 1-2 1-2 1-2 1-2 1-2 1-2 Open 1-2, 3-4 Open Open 1-2, 3-4 Open 1-2, 3-4 Open Open 1-2, 3-4 CPU Frequency Select JP1 1-2 2-3 2-3 1-2 JP2 1-2 1-2 2-3 2-3 CPU Frequency Ratio 1.5x (3.5x) 2x 2.5x (1.75x) 3x JP3 2-3 1-2 2-3 JP4 2-3 2-3 1-2 CPU External Clock 50MHz 60MHz 66MHz Intel Pentium P54C 75 P54C 90 P54C 100 P54C 120 P54C 133 P54C 150 P54C 166 P54C 200 Intel Pentium CPU Core Frequency 75MHz = 90MHz = 100MHz = 120MHz = 133MHz = 150MHz = 166MHz = 200MHz = CPU Core Frequency Ratio 1.5x 1.5x 1.5x 2x 2x 2.5x 2.5x 3x Ratio External Bus Clock 50MHz 60MHz 66MHz 60MHz 66MHz 60MHz 66MHz 66MHz External Bus Clock JP1 & JP2 1-2 & 1-2 1-2 & 1-2 1-2 & 1-2 2-3 & 1-2 2-3 & 1-2 2-3 & 2-3 2-3 & 2-3 1-2 & 2-3 JP1 & JP2 JP3 & JP4 2-3 & 2-3 1-2 & 2-3 2-3 & 1-2 1-2 & 2-3 2-3 & 1-2 1-2 & 2-3 2-3 & 1-2 2-3 & 1-2 JP3 & JP4 A-2 Jumper Table Summary PP/MT 150 PP/MT 166 PP/MT 200 PP/MT 233 150MHz = 166MHz = 200MHz = 233MHz = 2.5x 2.5x 3x 3.5x 60MHz 66MHz 66MHz 66MHz 2-3 & 2-3 2-3 & 2-3 1-2 & 2-3 1-2 & 1-2 1-2 & 2-3 2-3 & 1-2 2-3 & 1-2 2-3 & 1-2 IDT C6 WinChip 180 WinChip 200 CPU Core Frequency 180MHz = 200MHz = Ratio 3x 3x External Bus Clock 66MHz 66MHz JP1 & JP2 1-2 & 2-3 1-2 & 2-3 JP3 & JP4 1-2 & 2-3 2-3 & 1-2 Cyrix 6x86 P120+ P150+ P166+ CPU Core Frequency 100MHz = 120MHz = 133MHz = Ratio 2x 2x 2x External Bus Clock 50MHz 60MHz 66MHz JP1 & JP2 2-3 & 1-2 2-3 & 1-2 2-3 & 1-2 JP3 & JP4 2-3 & 2-3 1-2 & 2-3 2-3 & 1-2 Cyrix M2 MX-PR166 MX-PR200 MX-PR233 MX-PR266 CPU Core Frequency 150MHz = 166MHz = 200MHz = 233MHz = Ratio 2.5x 2.5x 3x 3.5x External Bus Clock 60MHz 66MHz 66MHz 66MHz JP1 & JP2 2-3 & 2-3 2-3 & 2-3 1-2 & 2-3 1-2 & 1-2 JP3 & JP4 1-2 & 2-3 2-3 & 1-2 2-3 & 1-2 2-3 & 1-2 AMD K5 PR90 PR100 PR120 PR133 PR166 CPU Core Frequency 90MHz = 100MHz = 90MHz = 100MHz = 116MHz = Ratio 1.5x 1.5x 1.5x 1.5x 1.75x External Bus Clock 60MHz 66MHz 60MHz 66MHz 66MHz JP1 & JP2 1-2 & 1-2 1-2 & 1-2 1-2 & 1-2 1-2 & 1-2 2-3 & 2-3 JP3 & JP4 1-2 & 2-3 2-3 & 1-2 1-2 & 2-3 2-3 & 1-2 2-3 & 1-2 AMD K6 PR2-166 PR2-200 PR2-233 CPU Core Frequency 166MHz = 200MHz = 233MHz = Ratio 2.5x 3x 3.5x External Bus Clock 66MHz 66MHz 66MHz JP1 & JP2 2-3 & 2-3 1-2 & 2-3 1-2 & 1-2 JP3 & JP4 2-3 & 1-2 2-3 & 1-2 2-3 & 1-2 A-3 Jumper Table Summary Enable/Disable Onboard Super I/O Controller JP18 1-2 2-3 Onboard Super I/O Enabled (default) Disabled Enable/Disable PS/2 Mouse Function JP20 1-2 2-3 PS/2 Mouse Enabled (default) Disabled Clearing CMOS JP14 1-2 2-3 Clear CMOS Normal operation (default) Clear CMOS DIMM Memory Type Select JP25 Open 1-2 & 3-4 Memory Type SDRAM EDO A-4 ...