VIA Technologies VT82C686A User Manual Download Page 18 | Manualshive

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Mainboard User’s Manual

Jumper JP18: BIOS Write Protection Selector

Use this jumper to enable or disable the BIOS write protection that
make the BIOS read-only on the mainboard. You should disable
this jumper when you want to flash the BIOS.

Function

Jumper Setting

Disable

Short Pins 1-2

Enable (read only)

Short Pins 2-3

14

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Summary of Contents for VT82C686A

Page 1: ... hereof without obligation of the manufacturer to notify any person of such revision or changes Trademarks IBM VGA and PS 2 are registered trademarks of International Business Machines Intel Pentium II III and MMX are registered trademarks of Intel Corporation Microsoft MS DOS and Windows 95 98 NT ME 2000 are registered trademarks of Microsoft Corporation PC cillin and ChipAwayVirus are trademarks...

Page 2: ...Mainboard User s Manual II ...

Page 3: ...xpansion Slots 20 Chapter 3 BIOS Setup Utility 23 Introduction 23 Running the Setup Utility 24 Standard CMOS Features Page 25 Advanced BIOS Features Page 26 Advanced Chipset Features Page 29 Integrated Peripherals Page 32 Power Management Setup Page 35 PnP PCI Configurations Page 37 Hardware Monitor Page 39 Frequency Voltage Control Page 40 Load Best Performance Defaults 41 Load Optimized Defaults...

Page 4: ...erfect Suite 8 A9 Support and Services A13 Appendix B Gamut2000 B1 1 GAMUT2000 Family B2 1 1 LifeAmp Versatile Audio Playback System B2 1 2 AudioPort Audio Transportation System B4 2 Installation B5 2 1 Before Beginning System Requirements B5 2 2 Uninstalling the Previous of GAMUT2000 B5 3 Main Console B7 3 1 Introduction B7 3 2 Function and Operation B7 3 3 Main Menu B9 IV ...

Page 5: ...100 VT82C686B chip only function A 4X AGP slot for highly graphics display and integrates a S3 Savage4 Pro 2D 3D Video Accelerator The mainboard has a built in AC97 Codec provides an AMR Audio Modem Riser slot to support Audio and Modem application In addition the mainboard has an extended set of ATX I O Ports including PS 2 keyboard and mouse ports two USB ports a parallel port a VGA port a seria...

Page 6: ...mory modules Support for 100 133 MHz memory bus Maximum installed memory is 2 x 512MB 1GB Expansion Slots One AMR slot for a special audio modem riser card One AGP4X slot for AGP 2 0 compliant interface Two 32 bit PCI slots for PCI 2 2 compliant bus interface One 8 16 bit ISA slot Onboard IDE channels Primary and Secondary PCI IDE channels Support for PIO modes Bus Mastering and Ultra DMA 33 66 10...

Page 7: ...s Provides PC99 Color Connectors for easy peripheral device connections Floppy disk drive connector with 1Mb s transfer rate Two serial ports with 16550 compatible fast UART One parallel port with ECP and EPP support Two USB ports optional two USB ports module Two PS 2 ports for keyboard and mouse One infrared port connector for optional module Onboard Flash ROM Automatic CPU and board configurati...

Page 8: ...000 provides professional audio features included MP3 encoding playback 3Deep delivers the precise imagery and displays accurate color in your monitor Corel WordPerfect Suite 8 is a Microsoft Windows office application suite optional WinDVD2000 is a DVD playback application optional Dimensions ATX form factor 24 4cm x 22cm 4 ...

Page 9: ...ch model will support different specification list as below Model Specification M781MR Support an AMR v 90 56K Fax Modem card M781 Your mainboard package ships with the following items The mainboard This User s Guide 1 UDMA 66 IDE cable 1 Floppy disk drive cable Support software on CD ROM disk Optional Accessories You can purchase the following optional accessories for this mainboard Extended USB ...

Page 10: ...f you don t have a wrist strap discharge static electricity by touching the bare metal of the system chassis 3 Handle the mainboard carefully by the edges Avoid touching the components unless it is absolutely necessary During installation put the mainboard on top of the static protection packaging it came in with the component side facing up Pre Installation Inspection 1 Inspect the mainboard for ...

Page 11: ...tly Install the mainboard in a system chassis case Connect any extension brackets or cables to the mainboard connector headers Install any other devices and make the appropriate connections to the mainboard connector headers Note 1 Before installing this mainboard make sure jumper JP1 is set to Normal setting See this chapter for information on locating JP1 and the setting options 2 Never connect ...

Page 12: ...ard User s Manual Mainboard Components Use the diagram below to identify the major components on the mainboard Note Any jumpers on your mainboard that do not appear in this illustration are for testing only 8 ...

Page 13: ...s Celeron PPGA and FCPGA Pentium III processors Do not try to install a Socket 7 processor in the Socket 370 A Socket 7 processor such as the Pentium MMX or the AMD K5 K6 does not fit in the Socket 370 The following list notes the processors that are currently supported by this mainboard FCPGA Pentium III 500 1130MHz FSB 100MHz 133MHz PPGA FCPGA Celeron 300 700MHz FSB 66 MHz 9 ...

Page 14: ...cket 370 identify the Pin 1 corner The Pin 1 corner is at the top of the locking lever when it has locked 4 Match the Pin 1 corners and insert the processor into the socket No force is required and the processor should drop into place freely 5 Swing the locking lever down and hook it under the catch on the side of the socket This secures the CPU in the socket 6 All processors should be installed w...

Page 15: ... so the maximum memory size is 2 x 512MB 1GB The edge connectors on the memory modules have cut outs which coincide with spacers in the DIMM sockets so that memory modules can only be installed in the correct orientation To install a module push the retaining latches at either end of the socket outwards Position the memory module correctly and insert it into the DIMM socket Press the module down i...

Page 16: ...ttings in the Setup Utility are incorrect and prevent your mainboard from operating To clear the CMOS memory disconnect all the power cables from the mainboard and then move the jumper cap into the CLEAR setting for a few seconds Function Jumper Setting Normal Operation Short Pins 1 2 Clear CMOS Memory Short Pins 2 3 Jumper JP5 Suspend to RAM Function Selector Use this jumper to enable or disable ...

Page 17: ... operate with a 66 or 133 MHz bus Function Jumper Setting Normal Operation Short Pins 1 2 Force 100 MHz Short Pins 2 3 Jumper JP8 Set System Bus 133 MHz Forced Use this jumper to set the system bus frequency In the normal setting the system will automatically select the correct frequency according to the kind of processor installed In the Force 133 MHz setting the system will use a 133 MHz system ...

Page 18: ...elector Use this jumper to enable or disable the BIOS write protection that make the BIOS read only on the mainboard You should disable this jumper when you want to flash the BIOS Function Jumper Setting Disable Short Pins 1 2 Enable read only Short Pins 2 3 14 ...

Page 19: ...nts on the chassis Connect the power connector from the power supply to the ATX1 connector on the mainboard If there is a cooling fan installed in the system chassis connect the cable from the cooling fan to the PWRFAN1 fan power connector on the mainboard Connect the case switches and indicator LEDs to the PANEL1 switch and LED connector header See the illustration below for a guide to the header...

Page 20: ...Extra IR keyboard mouse header This mainboard provides second infrared keyboard and mouse header J2 giving the option of installing second infrared keyboard and mouse ports on the front panel Depending on your case and system configuration this connector may be more suitable as the sole IR port connector Extra MIC Line out header This J1 header allows the user to install auxiliary front oriented m...

Page 21: ...ule This module bracket has two USB ports for more USB devices 1 Locate the USB2 header on the mainboard 2 Plug the bracket cable onto the header 3 In the system chassis remove a slot cover from one of the expansion slots and install the extension bracket in the opening Use the screw that held the slot cover in place to secure the extension bracket to the chassis 17 1 USB2 Header ...

Page 22: ...ard ships with an IDE cable that can support one or two IDE devices If you connect two devices to a single cable you must configure one of the drives as Master and one of the drives as Slave The documentation of the IDE device will tell you how to configure the device as a Master or Slave device The Master device connects to the end of the cable Install the device s and connect power from the syst...

Page 23: ...ent brands of CD ROM drive have different kinds of audio cable connectors Connect the cable to the appropriate connector Infrared Port You can connect an infrared port to the mainboard You can purchase this option from third party vendors 1 Locate the infrared port SIR1 header on the mainboard 2 If you are adding an infrared port connect the ribbon cable from the port to the header and then secure...

Page 24: ...e connector into the slot and press it firmly down into it so that it is fully inserted 4 Secure the expansion card bracket to the system chassis using the screw that held the slot cover in place AMR Slot The AMR Audio Modem Riser slot is an industry standard slot that allows for the installation of a special audio modem riser card Different territories have different regulations regarding the spe...

Page 25: ...e the system from a software power down You need to enable this feature in the BIOS setup utility Wake On Modem If you have installed a fax modem card connect the fax modem to the Wake On Modem connector WOM1 You can then use the setup utility to program your computer to resume from a power saving mode whenever there is an incoming call to the fax modem 21 WOM1 Header WOL1 Header ...

Page 26: ...Mainboard User s Manual 22 ...

Page 27: ...ty configuration is incorrect it may cause the system to malfunction It can even stop your computer from booting properly If this happens you can use the clear CMOS jumper to clear the CMOS memory used to store the configuration information or you can hold down the Page Up key while you reboot your computer Holding down the Page Up key also clears the setup information You can run the setup utilit...

Page 28: ...il Safe Defaults Load Optimized Defaults Set Supervisor Password Set User Password Save Exit Setup Exit Without Saving Esc Quit F9 Menu in BIOS Select Item F10 Save Exit Setup Time Date Hard Disk Type Listed below are explanations of the keys displayed at the bottom of the screens Key Function Esc Escape key Exits the current menu Cursor keys Scroll through the items on a menu PU PD Plus minus Pag...

Page 29: ... system date and time IDE Devices Your computer has two IDE channels Primary and Secondary and each channel can be installed with one or two devices Master and Slave Use these items to configure each device on the IDE channel Press Enter to display the IDE sub menu Press Esc to close the IDE device sub menu and return to the Standard CMOS Features page Floppy Drive A Floppy Drive B Use these items...

Page 30: ...Disk boot sector protection If this function is enabled and someone attempts to write data into this area BIOS will show a warning message on screen and alarm beep Move Enter Select PU PD Value F10 Save ESC Exit F1 General Help F5 Previous Values F6 Fail Safe Defaults F7 Optimized Defaults Virus Warning When this item is enabled it provides some protection against viruses that try to write to the ...

Page 31: ...e Boot Other Device If you enable this item the system will search all other possible locations for an operating system if it fails to find one in the devices specified under the first second and third boot devices Swap Floppy Drive If you have two floppy diskette drives in your system this item allows you to swap the assigned drive letters so that drive A becomes drive B and drive B becomes drive...

Page 32: ... software resides on both the disk drive and the host computer The disk drive software monitors the internal performance of the motors media heads and electronics of the drive The host software monitors the overall reliability status of the drive If a device failure is predicted the host software through the Client WORKS S M A R T applet warns the user of the impending condition and advises approp...

Page 33: ...bled OnChip Sound Auto Item Help Menu Level Move Enter Select PU PD Value F10 Save ESC Exit F1 General Help F5 Previous Values F6 Fail Safe Defaults F7 Optimized Defaults Bank 0 1 2 3 DRAM Timing This item allows you to select the timing for the DRAM slots depending on whether the board has paged SDRAMs SDRAM Cycle Length This field enables you to set the CAS latency time in HCLKs of 2 2 or 3 3 Th...

Page 34: ...greatly improve the display speed If your graphics display card does not support this feature you need to disable this item AGP Driving Control This item can be used to signal driving current on AGP cards to auto or Manual Some AGP cards need stronger than normal driving current in order to operate We recommend that you set this item to Auto by default AGP Driving Value When the previous item AGP ...

Page 35: ...nce with PCI specification version 2 1 PCI 2 Access 1 Retry When enabled the AGP Bus PCI 1 access to PCI Bus PCI 2 is executed with the error retry feature AGP Master 1 WS Write This implements a single delay when writing to the AGP Bus By default two wait states are used by the system allowing for greater stability AGP Master 1 WS Read This implements a single delay when reading to the AGP Bus By...

Page 36: ... PD Value F10 Save ESC Exit F1 General Help F5 Previous Values F6 Fail Safe Defaults F7 Optimized Defaults On Chip IDE Channel 0 1 Use these items to enable or disable the PCI IDE channels that are integrated on the mainboard Primary Secondary Master Slave PIO Each channel supports a master device and a slave device These four items let you assign which kind of PIO Programmed Input Output is used ...

Page 37: ...ate up to 57 6 Kbps IR Function Duplex This field is available when UART 2 Mode is set to either ASKIR or HPSIR This item determines the infrared IR function of the onboard infrared chip Full duplex means that you can transmit and send information simultaneously Half duplex is the transmission of data in both directions but only one direction at a time TX RX inverting enable Defines the voltage le...

Page 38: ...nd Blaster card if installed SB I O Base Address This item lets you set the I O base address for the Sound Blaster card SB IRQ Select This item lets you set the Interrupt Request IRQ for the Sound Blaster card SB DMA Select This item lets you select the Direct Memory Access DMA for the Sound Blaster card MPU 401 MPU 401 I O Address Use the two items to enable the MPU 401 function and set the I O a...

Page 39: ...nction Power Management This item acts like a master switch for the power saving modes and hard disk timeouts If this item is set to Max Saving power saving modes occur after a short timeout If this item is set to Min Saving power saving modes occur after a longer timeout If the item is set to User Define you can insert your own timeouts for the power saving modes ACPI Suspend Type This item defin...

Page 40: ...re power down In a software power down the system can be resumed by Wake Up Alarms This item lets you install a software power down that is controlled by the normal power button on your system If the item is set to Instant Off then the power button causes a software power down If the item is set to Delay 4 Sec then you have to hold the power button down for four seconds to cause a software power d...

Page 41: ...t PU PD Value F10 Save ESC Exit F1 General Help F5 Previous Values F6 Fail Safe Defaults F7 Optimized Defaults PNP OS Installed Setting this option to Yes allows the PnP OS instead of BIOS to assign the system resources such as IRQ and I O address to the ISA PnP device Reset Configuration Data If you enable this item and restart the system any PnP configuration data stored in the BIOS setup is cle...

Page 42: ...standard VGA cards This board includes a built in VGA system that does not require palette snooping so you must leave this item disabled Assign IRQ For VGA Names the interrupt request IRQ line assigned to the VGA if any on your system Activity of the selected IRQ always awakens the system Assign IRQ For USB Names the interrupt request IRQ line assigned to the USB if any on your system Activity of ...

Page 43: ...0 Save ESC Exit F1 General Help F5 Previous Values F6 Fail Safe Defaults F7 Optimized Defaults Shutdown Temperature Enables you to set the maximum temperature the system can reach before powering down System Component Characteristics These fields provide you with information about the systems current operating status You cannot make changes to these fields The following information is displayed CP...

Page 44: ...free DIMM and PCI slots Spread Spectrum Eables or disables the spread spectrum for the installed processor CPU Host PCI Clock This item appears if you have set the CPU Internal Core Speed to Manual Use the CPU DIMM PCI Clock to set the frontside bus frequency for the installed processor usually 133 MHz 100 MHz or 66 MHz Then use CPU Clock Ratio to set a multiple CPU Clock Ratio Use this item to se...

Page 45: ...that option and then press F6 Load Optimized Defaults If you select this item and press Enter a dialog box appears If you press Y and then Enter the Setup Utility loads a set of optimized default values These default values place demands on the system that may be greater than the performance level of the components such as the CPU and the memory You can cause fatal errors or instability if you ins...

Page 46: ...to confirm the password Confirm Password 5 Type the password again and press Enter or just press Enter if you are deleting a password that is already installed 6 If you typed the password correctly the password will be installed Save Exit Setup Highlight this item and press Enter to save the changes that you have made in the Setup Utility configuration and exit the program When the Save and Exit d...

Page 47: ...tware The software on the support CD ROM is for Windows 95 NT and Windows 98 ME 2000 The installation procedure differs depending on which Operating System you have but the automatic installation is now for Win98 ME 2000 Installing under Windows 95 NT To install support software for Windows 95 NT 2000 follow this general procedure 1 Insert the support CD ROM disc in the CD ROM drive The system mig...

Page 48: ...uitry Find the driver and audio application here D SOUND Driver VIA D SOUND Gamut AMR Modem Driver Find the driver here D Modem Driver AMR PCtel USB Driver The USB Driver allows the system to recognize the USB ports on the mainboard You need to install this driver if you are running Windows 95 Windows 95 OSR2 does not require this driver This driver is available for Win95 D USB EUSBSUPP USBSUPP EX...

Page 49: ...buttons on it Setup Browse CD and Exit See the following screen illustration When you click on the Setup button the software installation program will run and you can select what kind of installation you want to do as explained later in this section The Browse CD button is the standard Windows command that allows you to examine the contents of the disc using the Windows 98 file browsing interface ...

Page 50: ... proceed 3 The support software will automatically install Once any of the installation procedures start software is automatically installed in sequence You will need to follow the onscreen instructions confirm commands and allow the computer to restart as few times as is needed to complete installing whatever software you selected to install When the process is finished all the support software w...

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