SOYO SOYOTM manual Memory Configuration, Dual Voltage CPU Setting

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Hareware Setup

Dual Voltage CPU Setting

Dual voltage CPUs are designed to use different voltage for VIO and VCore and they include Intel P55C series, Cyrix 6x86L/MX, AMD K6, and MMX technology included CPUs. Refer to the following figures to set these CPUsÕ voltage:

 

 

2.8V CPU (default)

 

 

(i.e., P55C, 6x86L/MX)

 

 

11 9 7 5 3 1

 

Socket 7

JP30

 

(for 586 CPU Family)

 

 

 

 

2.1V CPU

 

 

(i.e., K6)

 

W25P240AF

11 9 7 5 3 1

 

 

 

 

JP30

FDC

 

 

 

 

2.9V CPU

IDE2

11 9 7 5 3 1

(i.e., K6)

 

11 9 7 5 3 1

IDE1

 

 

 

 

JP30

 

 

 

JP30

 

 

3.2V CPU

 

 

(i.e., K6)

 

 

11 9 7 5 3 1

JP30

Figure 2Ð2Ð2. Dual Voltage CPU

Note: Due to various design, please ask your CPU dealer for the exact VIO and VCORE voltage before you install it.

Memory Configuration

The mainboard supports two banks of 72-pin SIMM modules and three strips of 168-pin/3.3V Unbuffered DIMM modules. The mainboard requires SIMM of at least 70ns access time.

The mainboard supports from 4 to 256 Mbytes with no other restrictions on memory configurations. You must install two strips of SIMM modules to complete a bank.

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Contents 5XA5 TX P54C/P55C PCI Mainboard User’s Guide Technical ReferenceSoyotm Table of Contents Page Introduction Electrostatic Discharge Precautions Unpacking the MainboardMainboard Layout w/ Default Settings TAG SramMainboard Default Setting Jumpers JP5 Cmos Clear JumperJP40 CE Test Jumper Pin JP2 Smart Detect CPU Voltage Function Auto/Manual Jumper JP37 Dimm Voltage Select JumperCPU Type Configuration Frequency SettingHardware Setup Ð1Ð3. CPU Jumper Settings P54C/P55C- 180/60 MHz Socket AMD K6 PR266 CPU Setting 4.0 x clock CPU Single/Dual Voltage Setting Single Voltage CPU SettingMemory Configuration Dual Voltage CPU SettingRAM Bank Installation Notice Cache ConfigurationMemory Configuration Table Cache Size and RAM LocationsMulti I/O Port Addresses JP43 CPU Cooling Fan Connector FDC FDC ConnectorATX PW ATX Power Supply Connectors IDE1/IDE2 On-board Primary/Secondary IDE HDD Connectors Reset Hardware Reset ControlHDD LED HDD LED Connector IR1 IR ConnectorSPK Speaker Connector PS/2 Mouse Conn. PS/2 Mouse ConnectorPRT Parallel Port Connector USB1/USB2 Universal Serial Bus ConnectorsBios Setup Standard Cmos Setup Bios Setup Drive a & B Video Halt OnCPU Internal Bios Features SetupQuick Power CacheSetting Chars/SecPCI/VGA Dram 64MBDram Timing Chipset Features SetupROM PCI/ISA Bios Chipset Features Setup Award SOFTWARE, INC Dram Leadoff TimingEDO/FP Sdram CASPower Management Setup Memory Hole At 15M- Choose Enabled or Disabled defaultROM PCI/ISA Bios Cmos Setup Utility Power Management Setup APM Bttn Primary/Secondary PNP/PCI Configuration SetupFloppy Disk Choose Enabled or Disabled Serial Port IDEPCI IRQ PCI IDE IRQINT# Load Setup Defaults Load Bios DefaultsPIO ROM PCI/ISA Bios Integrated Peripherals Award SOFTWARE, INCIntegrated Peripherals IDE Secondary Slave PIOUdma Parallel Port Mode IR Transmission DelayFIR Mode Use DMA ECP Mode Use DMASupervisor Password ÒEnter PasswordÓÒConfirm PasswordÓ User Password ROM PCI/ISA Bios Cmos Setup Utility IDE HDD Auto DetectionHard Disks Appendix CPU Setting List CPU Setting List Voltage Setting Possible CPUsMemory Configuration Spread Spectrum CPU System Hardware MonitorESC