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BIOS Setup

3-21

EPP 1.7 spec or EPP 1.9 spec can be selected.

ECP Mode Use DMA

The ECP mode has to use the DMA channel, so choose the onboard
parallel port with the ECP feature. After selecting it, the following mes-
sage will appear: “ECP Mode Use DMA.” At this time, the user can choose
between DMA channel 3 or 1.

PWRON After PWR-Fail

This setting specifies whether your system will reboot after a power fail-
ure or interrupts occurs. Available settins are:

Off

Leaves the computer in the power off state.

On

Reboots the computer.

Former-Sts

Restores the system to the status before power failure or
interrupt occurs.

Game Port Address/Midi Port Address

This setting disables or assigns an address for the onboard game/midi
port.

Midi Port IRQ

This setting specifies an IRQ for the onboard midi port.

Init Display First

This setting specifies which VGA card is your primary graphics adaptor. Avail-
able options: 

PCI Slot, AGP

.

Onchip USB Controller

This setting allows you to activate the onchip USB controller. Available settings:

All Disabled, All enabled, 1 USB Port, 2 USB Port

.

USB Keyboard/Mouse Support

Set to enabled if you need to use a USB keyboard/mouse and the Operating
System does not support or have any USB drivers installed, such as DOS or
SCO Unix. Available settings: 

Disabled, Enabled

.

Summary of Contents for P4XB-MA

Page 1: ...i Version 1 0 December 5 2001 VIA Mainboard User s Manual VIA P4XB MA Harnessing the Power of DDR266 SDRAM for the Intel Pentium 4 Processor ...

Page 2: ...acy of the content of this manual However it is possible that it may contain technical inaccuracies or typographical or other errors VIA will assume no liability for any inaccuracy found in this publication nor for damages direct indirect incidental consequential or otherwise that may result from such an inaccuracy including without limitation loss of data or profits VIA provides this manual as is...

Page 3: ...instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Notice 1 The changes or modifications not expressly approved by the party respon sible for compliance could void the user s authority to operate the ...

Page 4: ... make changes without notice Trademarks All trademarks used in this manual are the property of their respective owners Intel and Pentium are registered trademarks of Intel Corporation PS 2 and OS 2 are registered trademarks of IBM Corporation Windows 95 98 2000 and Windows NT are registered trademarks of Microsoft Netware is a registered trademark of Novell Award is a registered trademark of Award...

Page 5: ...odule 9 All cautions and warnings on the equipment should be noted 10 Never pour any liquid into the opening Liquid can cause damage or elec trical shock 11 If any of the following situations arises get the equipment checked by a service personnel The power cord or plug is damaged Liquid has penetrated into the equipment The equipment has been exposed to moisture The equipment has not work well or...

Page 6: ...vi Box Contents 1 x VIA Mainboard 1 x User s manual 1 x Floppy ribbon cable 1 x ATA 66 100 Hard drive ribbon cable 1 x 2 Port USB Module 1 x Driver Utilities CD ...

Page 7: ...dures 2 6 Power Supply 2 7 ATX 20 Pin Power Connector JWR1 2 7 ATX 12V Power Connector JPW1 2 7 Back Panel 2 8 Mouse Connector JKBMS1 2 8 Keyboard Connector JKBMS1 2 8 LANJack RJ 45 2 8 USB Connectors 2 8 Serial Port Connectors COM A COM B 2 8 Joystick Midi Connector 2 8 Audio Port Connectors 2 9 Parallel Port Connector LPT1 2 9 Connectors 2 10 Floppy Disk Drive Connector FDD1 2 10 Power Saving Sw...

Page 8: ...B2 Intel spec 2 19 Remote Power On Off Switch Connector JRMS1 2 20 Jumpers 2 21 Clear CMOS Jumper JBAT1 2 21 Slots 2 22 AGP Accelerated Graphics Port Slot 2 22 PCI Slots 2 22 CNR CommunicationNetworkRiser 2 22 PCI Interrupt Request Routing 2 23 Chapter3 AwardBIOSSetup 3 1 Entering Setup 3 2 Control Keys 3 2 Getting Help 3 3 The Main Menu 3 4 Standard CMOS Features 3 6 Advanced BIOS Features 3 8 Ad...

Page 9: ...Control 3 29 Load Fail Safe Defaults 3 31 Load Optimized Defaults 3 32 Supervisor User Password 3 33 Save Exit Setup 3 35 Exit Without Saving 3 36 Chapter 4 Driver Setup 4 1 VIA Apollo P4X266A Chipset Driver 4 2 Realtek ALC201A Audio Driver 4 7 ...

Page 10: ...gh bandwidth DDR266 SDRAM to the Intel Pentium 4 processor platform and utilizes advanced V Link technology for optimal system efficiency Designed for the latest 478 pin Pentium 4 processors the P4XB MA offers the ideal platform for building powerful PCs and workstations This chapter includes the following topics Mainboard Specifications 1 2 Mainboard Layout 1 4 Specifications ...

Page 11: ...ts One AGP Accelerated Graphics Port 4x slot Three PCI 2 2 32 bit PCI expansion slots supports 3 3v 5v PCI bus interface One CNR Communication Network Riser slot On Board IDE z IDE controller on the south bridge of the VIA Apollo P4X266A chipset provides IDE HDD CD ROM with PIO Bus Master and Ultra DMA 33 66 100 operation modes z Can connect up to four IDE devices On Board Peripherals On Board Per...

Page 12: ...ec Meets PC2001 audio performance requirement LAN RealTek RTL81000L 10 100 Base T Fast Ethernet Controller Supports 10MB s and 100MB s auto negotiation operation Compliance with PCI v2 2 Compliance with PC99 standard Supports Wake On LAN and remote wake up Supports ACPI power management BIOS Plug and Play Award BIOS Dimension Micro ATX Form Factor 24 3cm x 23 1cm Mounting 6 standard mounting holes...

Page 13: ...Chapter 1 1 4 VIA P4XB MA MicroATX Mainboard Mainboard Layout ...

Page 14: ... installation procedures Some components can be damaged if they are installed incorrectly If possible use a grounded wrist strap before han dling computer components Static electricity can damage the components This chapter contains the following topics Central Processing Unit CPU 2 2 Memory Installation 2 5 Power Supply 2 7 Back Panel 2 8 Connectors 2 10 Jumpers 2 21 Slots 2 22 2 ...

Page 15: ...e turning on the computer 1 Pull the lever sideways away from the socket Then raise the lever up to a 90 degree angle 2 Look for the dot cut edge The dot cut edge should point to wards the lever pivot The CPU will only fit in the correct orientation 3 Hold the CPU down firmly and then close the lever shut to complete the installation CPU Installation Procedures Overheating will seriously damage th...

Page 16: ...nstall the Heatsink Fan 2 Position the heatsink onto the reten tion mechanism 1 Locate the CPU and its retention mechanism on the motherboard 3 Mount the fan on top of the heatsink Press down the fan until its four clips get wedged in the holes of the reten tion mechanism 4 Press the two levers down to fasten the fan Each lever can be pressed down in only ONE direction retention mechanism levers ...

Page 17: ...overclocking However please make sure your components are able to tolerate the abnormal settings required for overclocking Any attempt to operate beyond product specifications is not recommended We do not guarantee the damages or risks caused by operation beyond product specifications WARNING 5 Connect the fan power cable from the mounted fan to the 3 pin fan power connector on the board fan power...

Page 18: ...ce per cycle It transfers data on both the rising and falling edges of the clock Conventional SDRAM only uses the rising edge of the clock to transfer data DDR SDRAM uses 2 5 volts as opposed to 3 3 volts used in SDR SDRAM and requires 184 pin DIMM modules rather than 168 pin DIMM modules used by SDRSDRAM Two types of DDR are available at the time of writing PC1600 PC2100 PC1600 DDR SDRAM running ...

Page 19: ...u can install memory modules in any of the following combinations Socket Memory Module Total Memory Slot 1 Bank 0 Bank 1 32MB 64MB 128MB 256MB 512MB 1GB 32MB 1GB Slot 2 Bank 2 Bank 3 32MB 64MB 128MB 256MB 512MB 1GB 32MB 1GB Maximum System Memory Supported 32MB 2GB 1 The DDR DIMM module has only one notch in the center 2 Insert the DDR module vertically into the DDR DIMM slot Make sure the notch is...

Page 20: ...ply connector is inserted on the board The P4XB MA mainboard requires an ATX power supply for powering the system Before inserting the power supply connector always make sure that all components are installed correctly to ensure that no damage will be caused ATX 12V Power Connector JPW1 This 12V power connector is used to provide power to the CPU PIN SIGNAL 1 GND 2 GND 3 12V 4 12V JPW1 Pin Definit...

Page 21: ...s connector LAN Jack RJ 45 The mainboard provides one standard RJ 45 jack for connection to Local Area Network LAN You can connect a network cable to the LAN jack Keyboard Connector JKBMS1 The mainboard provides a standard PS 2 keyboard mini DIN connector for attaching a PS 2 keyboard You can plug a PS 2 keyboard directly into this connector The Back Panel of the VIA P4XB MA mainboard provides the...

Page 22: ...ternal CD player tape player or other audio devices Mic In is a connector for microphones Parallel Port Connector LPT1 The mainboard provides a 25 pin female centronic connector for LPT A paral lel port is a standard printer port that supports Enhanced Parallel Port EPP and Extended Capabilities Parallel Port ECP mode ...

Page 23: ...k Drive Connector FDD1 The standard floppy disk drive connector supports 360K 720K 1 2M 1 44M and 2 88M floppy disk types Power Saving Switch Connector JGS1 This connector is for attaching a power saving switch Pressing the switch once will enter the system into sleep suspend state Pressing any key will wake up the system JGS1 Connectors ...

Page 24: ...he provided IDE hard disk cable IDE1 PrimaryIDEConnector The first hard drive should always be connected to IDE1 IDE1 can connect a Master and a Slave drive You must configure the second hard drive to Slave mode by setting the jumper accordingly IDE2 Secondary IDE Connector IDE2 can also connect a Master and a Slave drive TIP If you install two hard disks on cable you must configure the second dri...

Page 25: ...it while the system power is on There are two types of LEDs you can connect from the system case to the pin Case Connector JFP2 The case connector JFP2 allows you to connect to the the Power Switch Reset Switch Power LED and HDD LED on the case Pin Description Pin Description 1 HDD_LED 2 PWR_LED G 3 HDD_LED 4 PWR_LED Y 5 RESET 6 PWR_SW 7 RESET 8 PWR_SW 9 RSVD_DNU 10 NC JFP2 Pin Definition Hard dis...

Page 26: ...lor for the power LED to show the suspend sleep mode HDDLED The HDD LED shows the activity of a hard disk drive connected to the IDE1 or IDE2 connector Avoid turning the power off while the HDD is working You can connect the HDD LED from the system case to this pin LEDStatus Description Steady Green The system is in the full on mode Blinking The system enters the suspend sleep mode z When you sele...

Page 27: ...is for the CD ROM audio connector Aux Line In Connector J6 This connector is for a DVD add on card with Line in connector Modem In Connector J5 This connector is for a modem with internal audio connector J2 GND R L J5 GND Phone_In Mono_Out J6 GND R L ...

Page 28: ...onfigure the settings through the BIOS setup to use the IR function The difference between IR1 IR2 is that IR2 is compliant to the3 Intel Front Panel I O Connectivity Design Guide 1 VCC 2 NC 3 IRRX 4 GND 5 IRTX Pin Signal IR1 Pin Definition 1 Not assigned 2 NC 3 VCC 4 GND 5 IRTX 6 IRRX Pin Signal IR2 Pin Definition IR1 1 1 2 5 6 IR2 ...

Page 29: ...gnal Return from Front Panel 7 HP_ON RSVD for future use to control Headphone Amplifier 8 NC NoConnection 9 AUD_FPOUT_L Left Channel Audio signal to Front Panel 10 AUD_RET_L Left Channel Audio signal Return from Front Panel JAUDIO1 Pin Definition 1 10 Pin Signal Description 1 1 AUD_MIC Front Panel Microphone input signal 12 AUD_GND Ground used by Analog Audio Circuits 13 AUD_FPOUT_R Right Channel ...

Page 30: ...wake up the computer via remote control through a local area network LAN Wake On Ring Connector JMDM1 This connector allows you to connect to a modem card with the Wake On Ring function The connector will power up the system when a signal is received through the modem card JMDM1 NC MDM_WAKEUP 5VSB 1 GND NC JWOL1 5VSB GND MP_WAKEUP 1 ...

Page 31: ...onnectors always take note that the red wire is the positive and should be connected to the 12V the black wire is Ground and should be connected to GND If the mainboard has a System Hardware Moni tor chipset on board you must use a specially designed fan with speed sensor to take advantage of the CPU fan control NOTE Always consult the vendor for proper CPU cooling fan SFAN1 SENSOR 12V GND PFAN1 S...

Page 32: ...l Serial Bus USB connector for con necting additional USB devices This USB2 connector is compliant to the Intel Front Panel I O Connectivity Design Guide 10 2 9 1 Pin Description Pin Description 1 VCC 2 VCC 3 DATA3 4 DATA2 5 DATA3 6 DATA2 7 GND 8 GND 9 NC 10 Overcurrent Signal USB2 Pin Definition ...

Page 33: ...the system is off pressing the button will turn the system on When the system is on pressing the button once will enter the system to the sleep suspend state If the button is pressed for more than four seconds the system will be turned off To change the setup go to the BIOS Power Management Setup JRMS1 ...

Page 34: ...ear the system configuration use the JBAT1 Clear CMOS Jumper to clear data Follow the instructions below to clear the data The mainboard provides one jumper for setting the computer s functions This section will explain how to change your mainboard s function through the use of the jumper Clear CMOS 3 1 Keep CMOS 3 1 You can clear CMOS by shorting 2 3 pin while the system is off Then return to 1 2...

Page 35: ...removing expansion cards make sure that you unplug the power supply first Meanwhile read the documentation for the expansion card to make any necessary hardware or software settings for the expansion card such as jumpers switches or BIOS configuration CNR Communication Network Riser The CNR slot allows you to insert the CNR expansion cards CNR is a specially designed network audio or modem riser c...

Page 36: ...R Q are hardware lines over which devices can send interrupt signals to the microprocessor The PCI LAN IRQ pins are typically connected to the PCI bus INT A INT D pins as follows Order 1 Order 2 Order 3 Order 4 PCI Slot 1 INT A INTB INTC INTD PCI Slot 2 INT B INTC INTD INT A PCI Slot 3 INTC INTD INT A INTB LAN INTB ...

Page 37: ...res 3 6 Advanced BIOS Features 3 8 Advanced Chipset Features 3 11 Integrated Peripherals 3 16 Power Management Setup 3 22 PNP PCI Configurations 3 26 PC Health Status 3 28 Frequency Voltage Control 3 29 Load Fail Safe Defaults 3 31 Load Optimized Defaults 3 32 Set Supervisor User Password 3 33 Save Exit Setup 3 35 Exit Without Saving 3 36 ...

Page 38: ...the previous CMOS value from CMOS only for Option Page Setup Menu F6 Load the default CMOS value from Fail Safe default table only for Option Page Setup Menu F7 Load Optimized defaults F10 Save all the CMOS changes and exit Power on the computer and the system will start POST Power On Self Test process When the message below appears on the screen press DEL key to enter Setup Press DEL to enter SET...

Page 39: ...ress Esc GeneralHelp F1 The BIOS setup program provides a General Help screen You can call up this screen from any menu by simply pressing F1 The Help screen lists the appropriate keys to use and the possible selections for the highlighted item Press Esc to exit the Help screen After entering the Setup menu the first menu you will see is the Main Menu MainMenu The main menu lists the setup functio...

Page 40: ...IntegratedPeripherals Use this menu to specify your settings for integrated peripherals PowerManagementSetup Use this menu to specify your settings for power management PnP PCIConfigurations This entry appears if your system supports PnP PCI Once you enter Award BIOS CMOS Setup Utility the Main Menu Figure 1 will appear on the screen The Main Menu allows you to select from twelve setup functions a...

Page 41: ...enu to load factory default settings in the BIOS for stable system running LoadOptimizedDefaults Use this menu to load factory default settings into the BIOS for optimal and stable system operations Supervisor UserPassword Use this menu to set User and Supervisor Passwords Save ExitSetup Save CMOS value changes to CMOS and exit setup ExitWithoutSaving Abandon all CMOS value changes and exit setup ...

Page 42: ... specifications of your drive must match with the drive table The hard disk will not work properly if you enter improper information for this category If your hard disk drive type is not matched or listed you can use Manual to define your own drive type manually If you select Manual related information is asked to be entered to the follow Standard CMOS Features The items in Standard CMOS Features ...

Page 43: ...ctor Number of sectors Drive A B This item allows you to set the type of floppy drives installed Available options are None 360K 5 25 in 1 2M 5 25 in 720K 3 5 in 1 44M 3 5 in 2 88M 3 5 in Video The setting controls the type of video adapter used for the primary monitor of the system Available options are EGA VGA CGA 40 CGA 80 and Mono HaltOn The setting determines whether the system will stop if a...

Page 44: ...rnal L2 cache Settings Enabled and Disabled CPU L2 Cache ECC Checking This setting allows you to enable or disable the ECC Error Correcting Code feature for error detection and correction when data passes through L2 cache memory Setting options Enabled and Disabled Quick Power On Self Test The option speeds up Power On Self Test POST after you power on the computer When setting the item to Enabled...

Page 45: ...the system fails to boot from the First Second Third boot device Swap FloppyDrive Setting to Enabled will swap floppy drives A and B BootUpFloppySeek Setting to Enabled will make BIOS seek floppy drive A before booting the system Settings Disabled and Enabled BootUpNumLockStatus This item is to set the NumLock status when the system is powered on Setting to On will turn on the Num Lock key when th...

Page 46: ...0 and 1000 SecurityOption This specifies the type of BIOS password protection that is implemented Set tings are described below OS Select For DRAM 64MB This allows you to run the OS 2 operating system with DRAM greater than 64MB Setting options Non OS2 OS2 VideoBIOSCacheable SelectingEnabledallowscachingofthevideoBIOSROMatC0000htoC7FFFh resulting in better video performance However if any program ...

Page 47: ...ters control most of the system options in the computer Advanced Chipset Features DRAMClock DriveControl Press Enter to enter the sub menu and the following screen appears DRAMTimingbySPD This setting determines whether DRAM timing is configured by reading Note Change these settings only if you are familiar with the chipset ...

Page 48: ...he timing delay before SDRAM starts a read command after receiving it Setting options 2 2 5 3 clock cycles Auto 2 increases system performance while 2 5 provides more stable system performance for DDR SDRAM BankInterleave This setting determines the bank interleave for the installed SDRAM Setting options Disabled Auto RowPrecharge This setting allows you to select the number of DRAM clocks allocat...

Page 49: ...Length for DRAM The bigger the sizes the faster the system addresses memory Setting options 4 8 Auto DRAMCommandRate This setting controls the DRAM command rate Selecting 1T allows DRAM signal controller to run at 1T T clock cycles rate Selecting 2T makes DRAM signal controller run at 2T rate 1T is faster than 2T Setting options 2T 1T AGP P2P Bridge Control Press Enter to enter the sub menu and th...

Page 50: ...anual AGP Fast Write This setting enables disables the AGP Fast Write feature The Fast Write technology allows CPU to write directly into the graphics card without passing anything through system memory and improves 4X speed accordingly Select Enabled only when your AGP card supports the feature Setting options Enabled Disabled CPU PCI Bus Control Press Enter to enter the sub menu and the followin...

Page 51: ...PCIDelayTransaction The chipset has an embedded 32 bit posted write buffer to support delay transaction cycles Select Enabled to support compliance with PCI speci fication version 2 1 Setting options Enabled Disabled System BIOS Cacheable Selecting enabled allows write through caching of the system BIOS ROM at F0000h to FFFFF except F8000 to F8FFF resulting in better system BIOS performance ...

Page 52: ...3 16 Integrated Peripherals OnboardLANChip This setting enables the onboard RTL8100L LAN chip Setting options Enabled Disabled VIAOnChipIDEDevice Press Enter to enter the sub menu and the following screen appears ...

Page 53: ...nes the best mode for each IDE device Primary SecondaryMaster SlaveUDMA Ultra DMA implementation is possible only if your IDE device supports it and your operating environment contains a DMA driver If both your hard drive and software support Ultra DMA 33 select Auto to enable BIOS support Setting options Auto Disabled IDEHDDBlockMode This setting allows your hard disk controller to use the fast b...

Page 54: ...troller will be enabled if not it is disabled Disable the controller if you want to use other controller cards to connect an audio device Setting options Auto Disabled VIA 3068MC97Modem Auto allows the mainboard to detect whether a modem is used If a modem is used the onboard VIA MC 97 Modem Codec 97 controller will be enabled if not it is disabled Disable the controller if you want to use other c...

Page 55: ...se I O port address and IRQ for the onboard Serial Port A Serial Port B Selecting Auto allows the BIOS to automati cally determine the correct base I O port address Settings Disabled 3F8 IRQ4 2F8 IRQ3 3E8 IRQ4 2E8 IRQ3 and Auto UARTModeSelect The field allows you to specify the operation mode for serial port COM B Settings are Normal RS 232CSerialPort IrDA IrDA compliant Serial Infrared Port ASKIR...

Page 56: ...ardParallelPort This specifies the I O port address and IRQ of the onboard parallel port Settings 378 IRQ7 278 IRQ5 3BC IRQ7 and Disabled ParallelPortMode SPP Standard Parallel Port EPP Enhanced Parallel Port ECP Extended Capability Port ECP EPP Extended Capability Port Enhanced Parallel Port SPP EPP ECP ECP EPP To operate the onboard parallel port as Standard Parallel Port only choose SPP To oper...

Page 57: ...res the system to the status before power failure or interrupt occurs GamePortAddress MidiPortAddress This setting disables or assigns an address for the onboard game midi port MidiPortIRQ This setting specifies an IRQ for the onboard midi port Init Display First This setting specifies which VGA card is your primary graphics adaptor Avail able options PCI Slot AGP Onchip USB Controller This settin...

Page 58: ...ttings Enabled and Disabled Sleep State This item specifies the power saving modes for ACPI function Options are S1 POS The S1 sleep mode is a low power state In this state no system context CPU or chipset is lost and hardware maintains all system context S3 STR The S3 sleep mode is a power down state in which power is supplied only to essential components such as main memory and wake capable devi...

Page 59: ... system inactivity the CPU clock runs at slower speed while all other devices still operate at full speed Settings are Disable 1 Min 2 Min 4 Min 6 Min 8 Min 10 Min 20 Min 30 Min 40 Min and 1 Hour SuspendMode After the selected period of system inactivity all devices except the CPU shut off Settings are Disabled 1 Min 2 Min 4 Min 8 Min 12 Min 20 Min 30 Min 40 Min and 1 Hour PMControlbyAPM Setting t...

Page 60: ...hanges its color to indicate the sleep state IRQ EventActivityDetect Press Enter to enter the sub menu and the following screen appears PS2KBWakeupSelect PS2KBWakeupfromS3 PS2MSWakeupfrom S3 USB Resume from S3 VGA LPT COM HDD FDD PCI Mas ter WakeUpOnLID PowerOnbyPCICard ModemRingResume These fields specify whether the system will be awakened from power saving modes when activity or input signal of...

Page 61: ... any enabled IRQ channels IRQ3 IRQ15 Enables or disables the monitoring of the specified IRQ line If set to Enabled the activity of the specified IRQ line will prevent the system from entering power saving modes or awaken it from power saving modes Note IRQ Interrupt Request lines are system resources allocated to I O devices When an I O device needs to gain attention of the operat ing system it s...

Page 62: ...ds will be initialized by the PnP operating system like Windows 95 or 98 When set to No BIOS will initialize all the PnP cards So select Yes if the operating system is Plug Play aware Reset Configuration Data Normally you leave this field Disabled Select Enabled to reset Extended Sys tem Configuration Data ESCD when you exit Setup if you have installed a new add on and the system reconfiguration h...

Page 63: ...vices operating on different buses can handle data from the CPU on each set of palette registers on every video device Bit 5 of the command register in the PCI device configuration space is the VGA Palette Snoop bit 0 is disabled For example if there are two VGA devices in the computer one PCI and one ISA and the The setting must be set to Enabled if any ISA bus adapter in the system requires VGA ...

Page 64: ...re reaches the upper limit preset in this setting the warn ing mechanism will be activated This helps you to prevent the CPU overheat problem Current System CPU Temperature Current System CPU Fan Vcore 3 3V 5V 12V 12V 5V VBAT V 5VSB V These items display the current status of all of the monitored hardware de vices components such as CPU voltages temperatures and all fans speeds ...

Page 65: ...unction reduces the EMI generated by modulating the pulses so that the spikes of the pulses are reduced to flatter curves If you do not have any EMI problem leave the setting at Disabled for optimal system stability and performance But if you are plagued by EMI setting to Enabled for EMI reduction Remember to disable Spread Spectrum if you are overclocking be cause even a 0 25 jitter can introduce...

Page 66: ...Chapter 3 3 30 CPURatio This setting controls the multiplier that is used to determine the internal clock speed of the processor relative to the external or motherboard clock speed ...

Page 67: ...rs to restore all the BIOS settings to the default Fail Safe values The Fail Safe default settings are the settings set by the mainboard manufacturer for stable running of the mainboard Pressing Y loads the default Fail Safe settings for stable system performance ...

Page 68: ...mized Defaults are the default values also set by the mainboard manufacturer for both optimized and stable perform ance of the mainboard When you select Load Optimized Defaults a message as below appears Pressing Y loads the default values that are factory settings for optimal and stable system performance Load Optimized Defaults ...

Page 69: ...ill show up confirming the password will be disabled Once the password is disabled the system will boot and you can enter Setup without entering any password When a password has been set you will be prompted to enter it every time you try to enter Setup This prevents an unauthorized person from changing any part of your system configuration Additionally when a password is enabled you can also have...

Page 70: ... Supervisor password Can enter and change the settings of the setup menus User password Can only enter but do not have the right to change the settings of the setup menus entry to Setup If set to Setup password prompt only occurs when trying to enter Setup ...

Page 71: ...t the Setup menu you can select this option to save the changes and quit A message as below will appear on the screen Typing Y will allow you to quit the Setup Utility and save the user setup changes to RTC CMOS Typing N will return to the Setup Utility ...

Page 72: ... to quit the Setup menu you can select this option to abandon the changes A message as below will appear on the screen Typing Y will allow you to quit the Setup Utility without saving any changes to RTC CMOS Typing N will return to the Setup Utility ...

Page 73: ...A chipset Realtek ALC201A audio drivers It consists of the following topics Note You must install VIA chipset drivers first before installing other drivers like audio or VGA drivers VIA Apollo P4X266A Chipset Drivers 4 2 Realtek ALC201A Audio Driver 4 7 Chapter 4 Driver Setup Driver Setup 4 ...

Page 74: ...egrated Ultra DMA 33 66 100 master mode PCI EIDE controller Full featured Accelerated Graphics Port AGP controller Supports 533MHz 8x and 266MHz 4x transfer modes for AD and SBA signaling Pseudo synchronous with the host CPU bus with optimal skew control Windows 95 OSR 2 VXD and integrated Windows 98 NT5 miniport driver support System Requirements Computer Intel Pentium 4 processors Monitor VGA Su...

Page 75: ...k on Next 6 The setup program will request you to choose Install VIA ATAPI Ven dor Support Driver Select Install and click Next to continue 7 Select Click to enable DMA Mode and click Next to continue 8 The setup program will request you to choose Install VIA AGP VxD in Turbo mode Install VIA AGP VxD in normal mode or Uninstall VIA AGP VxD Select Install VIA AGP VxD in turbo mode and click on Next...

Page 76: ... Bus Driver dialog box Select Install and then click on Next 7 The screen will show a VIA AGP Driver 4 XX dialog box Select Install AGP 4X 133 driver and click Next 8 The setup program will request you to choose whether to restart the computer or not Please select Yes I want to restart my computer now and click Finish The computer will restart and finish the VIA Chipset Drivers installation One To...

Page 77: ...Next 7 The screen will show a VIA AGP Driver 4 XX dialog box Select Install AGP 4X 133 driver and click Next 8 The setup program will request you to choose whether to restart the computer or not Please select Yes I want to restart my computer now and click Finish The computer will restart and finish the VIA Chipset Drivers installation One Touch Setup In Windows ME you probably will see the One To...

Page 78: ... on VIA Chipset Drivers and the screen will show VIA Service Pack 4 XX 4 Click Next and the screen will show the VIA Service Pack 1 README dialog box 5 Click Yes to proceed and then select Install to enable Ultra DMA for IDEDriver 6 The Choose Destination Location dialog box appears Click Next 7 The Select Program Folder dialog box appears Click Next 8 Click on Yes I want to restart my computer an...

Page 79: ...or PCs Features AC 97 2 2 Compatible WHQL Compliant High Performance Converter Technology 18 bit Stereo Full Duplex CODEC with Independent Variable Sampling Rate Four Analog Line Level Stereo Inputs for Connection from LINE CD VIDEOandAUX Two Analog Line Level Stereo Inputs for Speakerphone and PC BEEP Two MIC Inputs w Software Selectable High Quality Differential CD Input True Stereo Line Level O...

Page 80: ...rive 2 The CD will auto run and the setup screen will appear 3 Click on ADVANCED Sound Drivers and follow the on screen instruc tions to complete the installation 4 After completion of the installation please restart Windows system for new driver installation The system will install the device drivers automatically ...

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