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VT-502 Mainboard Manual 

 

58

Wait until it displays 

Message: Power Off or Reset the system. 

Once the BIOS has been loaded successfully, remove the floppy diskette and 
reboot the system  holding the END key prior to  power  on until you enter 
CMOS setup. If you do not do this the first time booting up after upgrading 
the BIOS, the system will hang. 
 

NOTE : 

Do not turn off or reset the computer during the flash process. It will 

corrupt the BIOS data.  

 

 
 
 

 

Summary of Contents for VT-502

Page 1: ...VT 502 MAINBOARD MANUAL DOC No 16049 Rev A0 Date 8 1997 Part No 25 10809 00 ...

Page 2: ... fits around your wrist and is connected to a natural earth ground Touch a grounded or anti static surface or a metal fixture such as a water pipe Avoid contacting the components on add on cards boards and modules and with the gold finger connectors plugged into the expansion slot It is best to handle system components by their mounting bracket The above methods prevent static build up and cause i...

Page 3: ...d CPW 12 Flash EPROM Type Selection EP1 EP2 12 2 Install System RAM Modules 13 DRAM and SDRAM 13 RAM Module Configuration 14 Install SIMMs 15 Remove SIMMs 15 Install DIMMs 16 Remove DIMMs 16 Cache Memory 17 3 Install the CPU 18 CPU External Clock Bus Frequency CLK1 CLK2 CLK3 19 CPU to Bus Frequency Ratio FREQ1 FREQ2 FREQ3 19 Intel Pentium Pentium MMX CPUs 20 Frequency 20 Voltage 21 AMD K5 K6 CPUs ...

Page 4: ...nnector AT_KB 35 Printer Connector PRINTER 36 Universal Serial Bus Connectors USB1 USB2 36 Chapter 3 Award BIOS Setup CMOS Setup Utility 37 Standard CMOS Setup 38 Hard Disk Configurations 38 BIOS Features Setup 40 Chipset Features Setup 43 Power Management Setup 46 PNP Configuration Setup 48 Load BIOS Defaults 50 Load Setup Defaults 50 Integrated Peripherals 51 Supervisor User Password 54 IDE HDD ...

Page 5: ...Plug Play connections to future USB complaint peripheral devices System I O connectivity is further enhanced by an IrDA complaint serial port an optional PS 2 Keyboard PS 2 Mouse port and onboard SIR support Ample expansion is provided for with three 16 bit ISA slots and four 32 bit PCI slots The VT 502 also comes with a built in Enhanced PCI Bus Master PCI IDE controller that provides high speed ...

Page 6: ...ntains all the items listed below If you discover any item is damaged or missing please contact your vendor The VT 502 mainboard This user manual One IDE HDD cable One floppy disk drive cable One printer and COM1 cable One COM2 cable One USB riser card optional Software utility ...

Page 7: ...Overview 3 The VT 502 Mainboard ...

Page 8: ... processors AMD K5 PR90 90 MHz K5 PR100 100 MHz K5 PR120 90 MHz K5 PR133 100 MHz K5 PR150 105 MHz K5 PR166 116 MHz K5 PR200 133 MHz processors Cyrix 6x86MX PR166 150 MHz 6x86MX PR200 166 MHz processors Please read page 24 for details Cyrix 6x86 PR133 110 MHz 6x86 PR150 120 MHz 6x86 PR166 133 MHz processors IBM 6x86MX PR166 150 MHz 6x86MX PR200 166 MHz processors Please read page 26 for more inform...

Page 9: ... provide all the room you need to install a full range of add on cards USB Support Two USB ports on an optional riser card allow convenient high speed Plug and Play connections to the growing number of USB compliant external peripheral devices on the market Enhanced PCI Bus Master IDE Controller Integrated Enhanced PCI local bus IDE controller with two connectors supports up to four IDE devices su...

Page 10: ...ord will already be set and may in some cases differ from the basic defaults The first time you use your computer or when you need to re configure your system you should run the Setup Utility and write down the settings IRQ Functionality As you read through this manual you will see the term IRQ on a number of occasions It is important for you to know what this term means particularly if you intend...

Page 11: ... Some Legacy and PnP ISA add on cards may also need to use a Direct Memory Access DMA channel DMA assignments for this mainboard are handled in the same way as the IRQ assignment process outlined above For more information please refer to Chapter 3 of this manual Enhanced IDE This mainboard features an integrated Enhanced IDE controller that provides convenient high speed connections with up to fo...

Page 12: ...IrDA pinhead The serial port COM2 on this mainboard is designed to be an SIR compliant port If you wish to install the SIR connection feature you need to adjust the BIOS option for high speed performance Universal Serial Bus USB Functionality USB overcomes conventional I O bottlenecks by combining the I O ports into a single dual channel connector For optimum ease of use and flexibility USB not on...

Page 13: ... should follow these installation steps Step 1 Set system jumpers Step 2 Install System RAM modules Step 3 Install the CPU Step 4 Install expansion cards Step 5 Connect cables and power supply Step 6 Set up BIOS feature Please read Chapter Three CAUTION If you use an electric drill to install this mainboard on your chassis please wear a static wrist strap The recommended electric drill torque is f...

Page 14: ...VT 502 Mainboard Manual 10 Mainboard Layout ...

Page 15: ...per a black cap containing metal contacts is placed over the jumper pin s according to the required configuration A jumper is said to be shorted when the black cap has been placed on one or two of its pins The types of jumpers used in this manual are shown below NOTE Users are not encouraged to change the jumper settings not listed in this manual Changing the jumper settings improperly may adverse...

Page 16: ...CPW This jumper allows you to set the password configuration to Enabled or Disabled You may need to enable this jumper if you forget your password Flash EPROM Type Selection EP1 EP2 These two jumpers allow you to configure the Flash EPROM chip ...

Page 17: ... able to support up to 64MB EDO DRAM and lightning fast SDRAM Synchronous DRAM SDRAM is an advanced new memory technology that boosts overall system performance with its ability to synchronize all operations with the processor clock signal This makes the implementation of control interfaces easier and speeds up column access time SDRAM features an on chip burst counter that can be utilized to incr...

Page 18: ...k 1 8 4 4 8 16 8 8 16 32 16 16 32 64 32 32 64 128 64 64 64 64 NOTE 1 A RAM module of this size was not available for testing at press time 2 DIM1 and DIM2 only support 3 3V unbuffered EDO and SDRAM modules 3 DIM1 and SIMM1 are shared so are DIM2 and SIMM2 That is it is not allowed to install RAM modules on DIM1 and SIMM1 at the same time or on DIM2 and SIMM2 at the same time 4 This mainboard suppo...

Page 19: ...TE SIMMs in each bank must be of the same type and the BIOS automatically configures the memory size 2 Carefully fit a SIMM at a 45 degree angle into each empty socket to be populated All the SIMMs must face the same direction 3 Swing each SIMM into its upright locked position When locking a SIMM in place push on each end of the SIMM do not push in the middle as shown above Remove SIMMs To remove ...

Page 20: ...ll DIMMs 1 Locate the DIMM slots on the mainboard 2 Install the DIMM straight down into the DIMM slot with both hands 3 The clips of the slot will close up to hold the DIMM in place when the DIMM touches the slot s bottom Remove DIMMs Press the clips with both hands to remove the DIMM ...

Page 21: ...ta for imminent use Since cache memory is from five to more than ten times faster than main memory the CPU s access time is reduced giving you better system performance Pentium mainboards may implement various types of L2 cache SRAMs Pipeline Burst SRAM is one of them delivering the best price performance ratio They perform much better than asynchronous SRAMs NOTE The cache memory can not be upgra...

Page 22: ... start of this manual 3 Inserting the CPU chip incorrectly may damage the chip To install the CPU do the following 1 Lift the lever on the side of the CPU socket 2 Handle the chip by its edges and try not to touch any of the pins 3 Place the CPU in the socket The chip has a notch to correctly orientate the chip Align the notch with pin one of the socket Pin one is located in the blank triangular a...

Page 23: ...CLK1 CLK2 CLK3 The table below shows the jumper settings for the different CPU speed configurations CPU to Bus Frequency Ratio FREQ1 FREQ2 FREQ3 These three jumpers are used in combination to decide the ratio of the internal frequency of the CPU to the bus clock ...

Page 24: ...VT 502 Mainboard Manual 20 Intel Pentium Pentium MMX CPUs Frequency ...

Page 25: ...Installation Procedures 21 Voltage ...

Page 26: ...VT 502 Mainboard Manual 22 AMD K5 K6 CPUs Frequency ...

Page 27: ...Installation Procedures 23 Voltage ...

Page 28: ...VT 502 Mainboard Manual 24 Cyrix 6x86 6x86MX CPUs Frequency NOTE Please refer to your Cyrix CPU top marking about the actual CPU speed and ratio ...

Page 29: ...Installation Procedures 25 Voltage ...

Page 30: ...VT 502 Mainboard Manual 26 IBM 6x86 6x86MX CPUs Frequency NOTE Please refer to your IBM CPU top marking about the actual CPU speed and ratio ...

Page 31: ...Installation Procedures 27 Voltage ...

Page 32: ...your system For example expansion cards can provide video and sound capabilities CAUTION 1 Always turn the system power off before installing or removing any device 2 Always observe static electricity precautions See Handling Precautions at the start of this manual To install an expansion card do the following 1 Remove the chassis cover and select an empty expansion slot 2 Remove the corresponding...

Page 33: ...y into the slot Push down on one end of the expansion card then the other Use this rocking motion until the add in card is firmly seated inside the slot 5 Secure the board with the mounting screw removed in Step 2 Make sure that the card has been placed evenly and completely into the expansion slot The photo below shows an add on card that was installed in a system ...

Page 34: ...with your devices that take serial ports such as a serial mouse or a modem Usually it is recommended to connect your serial mouse to COM1 and your fax modem to COM2 Because COM2 and IR utilizes the same IRQ COM2 will not work if an IR device is connected to the IR connector CPU Fan Connector FAN This connector is connected to the CPU fan ...

Page 35: ...k connector connects to your floppy disk drive using the cable that is provided with this mainboard Infrared Connector IR This 10 pin male connector is used for connecting to the infrared SIR port and allows the data transaction with another system which also supports the SIR feature ...

Page 36: ...OCK 2 pin male allows the keyboard to access the system C TB_LED 2 pin male indicates the system speed is in normal or turbo speed D SP_SW 2 pin male Suspend Mode switch E SP_LED 2 pin male indicates the system into Suspend Mode when LED lit F SPK 4 pin male connects to speaker G IDE_LED 2 pin male indicates the IDE HDD I O access LED lit H RPW_SW 2 pin male Remote Power switch I RST 2 pin male al...

Page 37: ...ecting to the standard 5V power supply In the picture below notice that in most cases there are two marks P8 and P9 on the surface of the connector You have to insert the P8 plug into the P8 section of the connector and so forth for P9 Two black wires must be in the middle ...

Page 38: ...you have one IDE hard disk connect it to the PRIMARY connector using the IDE HDD flat cable provided with the mainboard The BIOS auto detection sets it to be a Primary Master disk If you want to install another IDE hard disk or CD ROM please use the SECONDARY connector PS 2 Mouse Connector MS_CON This connector is connected to the PS 2 mouse ...

Page 39: ...Connector RPW_CON This 3 pin male connector allows you to enable or disable the system power if the RPW_SW is on or off AT Keyboard Connector AT_KB This 5 pin female connector is used for your 101 key enhanced keyboard or 106 key Windows 95 keyboard ...

Page 40: ...VT 502 Mainboard Manual 36 ...

Page 41: ...rinter via a ribbon cable When inserting the cable please be sure that the red dash line of the ribbon cable is on the same side as pin 1 of this connector Universal Serial Bus Connectors USB1 USB2 These two connectors are featured to link with the USB peripheral devices via the optional USB riser card ...

Page 42: ...u how to modify the settings according to your system configuration CMOS Setup Utility A Setup program built into the system BIOS is stored in the CMOS RAM This Setup utility program allows changes to the mainboard configuration settings It is executed when the user changes system configuration user changes system backup battery or the system detects a configuration error and asks the user to run ...

Page 43: ...keys to highlight the item and then use the PgUp or PgDn keys to select the value you want in each item Hard Disk Configurations TYPE Select from 1 to 45 to fill remaining fields with predefined values of disk drives Select User to fill the remaining fields Select Auto to detect the HDD type automatically SIZE The hard disk size The unit is Mega Bytes CYLS The cylinder number of the hard disk HEAD...

Page 44: ...our hard disk supports the LBA mode select LBA or Large However if your hard disk cylinder is more than 1024 and does not support the LBA function you have to set at Large Select Normal if your hard disk supporting cylinders is below 1024 Software Turbo Speed The BIOS supports Software Turbo Speed feature Instead of pressing the Turbo Speed Button on the front panel simply press the Alt Ctrl and k...

Page 45: ...Disabled Default CPU Internal Cache When enabled improves the system performance Disable this item when testing or trouble shooting The options are Enabled Default Disabled External Cache When enabled supports an optional cache SRAM The options are Enabled Default Disabled Quick Power On Self Test When enabled allows the BIOS to bypass the extensive memory test The options are Enabled Disabled Def...

Page 46: ...atus When set to On allows the BIOS to automatically enable the Num Lock Function when the system boots up The options are On Default Off Boot Up System Speed Allows you to adjust the system speed when the system boots up The options are High Default Low Gate A20 Option When set at Fast allows a faster access response under Protected mode The options are Fast Default Normal Typematic Rate Setting ...

Page 47: ...elect the option OS2 Otherwise stay with the default setting Non OS2 The options are Non OS2 Default OS2 Video BIOS Shadow Allows the BIOS to copy the video ROM code of the add on video card to the system memory for faster access The options are Enabled Default Disabled C8000 CBFFF to DC000 DFFFF Shadow Allows the BIOS to copy the BIOS ROM code of the add on card to system memory for faster access...

Page 48: ...tion The options are Enabled Default Disabled DRAM Timing Allows you to select the speed of data access to EDO DRAM The options are 60 ns Default 70 ns Fast RAS To CAS Delay Allows you to define the delay time that from DRAM RAS active to CAS active The options are 3 2 Unit Clock T DRAM Read Burst EDO FP Allows you to define DRAM read burst timing The options are x222 x333 x332 x333 x444 x444 x333...

Page 49: ...resh cycles The options are 4 Clks 5 Clks SDRAM CAS Lat RAS to CAS If you install a DIMM this feature allows you to select the ratio of CAS Latency to RAS to CAS The default setting is slowest The 2 3 4 7 is fastest The second one is 2 3 5 8 then is 3 3 4 7 The options are 3 3 5 8 Default 3 3 4 7 2 3 5 8 2 3 4 7 System BIOS Cacheable When enabled allows the ROM area F000H FFFFH to be cacheable whe...

Page 50: ...e at the 15MB address will be treated as a DRAM cycle when the processor accesses the 15 16MB address area The options are Enabled Disabled Default Peer Concurrency Enable this item to allow the processor to continue its operation while another PCI Bus is active The options are Enabled Default Disabled Delayed PCI Transaction Enable this feature to abort the current CPI master cycle and to accept ...

Page 51: ...in their minimum values MAX Saving on the other hand initiates maximum values The options are Disable Default User Defined MIN Saving MAX Saving PM Control by APM The option No allows the BIOS to ignore the APM Advanced Power Management specification Selecting Yes will allow the BIOS wait for APM s prompt before it enters Doze mode Standby mode or Suspend mode If the APM is installed it will promp...

Page 52: ...abled Default 1 2 4 6 8 10 20 30 40 Min 1 Hr Standby Mode When disabled the system will not enter the Standby mode The specified time option defines the idle time the system takes before it enters Standby mode The options are Disabled Default 1 2 4 6 8 10 20 30 40 Min 1 Hr Suspend Mode When disabled the system will not enter Suspend mode The specified time option defines the idle time the system t...

Page 53: ...lecting ON will enable the power management timers when a no activity event is detected in the specified I O port or component Selecting OFF will disable the PM timer even if a no activity event is detected The options are ON OFF The default value of IRQ3 COM2 IRQ4 COM1 IRQ12 PS 2 Mouse IRQ14 Hard Disk ON The default setting of other IRQs OFF PNP Configuration Setup PNP OS Installed If your operat...

Page 54: ...acy ISA PCI ISA PnP Reset Configuration Data When enabled allows the system to clear the last BIOS configuration data and reset them with the default BIOS configuration data The options are Enabled Disabled default PCI IRQ Actived By We suggest that you set this to its default configuration unless you are a qualified technician The options are Level Default Edge Assign IRQ For VGA If your PCI VGA ...

Page 55: ... the system parameters that allow minimum system performance The OEM manufacturer may change the defaults through MODBIN before the binary image burns into the ROM Load Setup Defaults Selecting this field loads the factory defaults for BIOS and Chipset Features which the system automatically detects ...

Page 56: ...ault Disabled On Chip Secondary PCI IDE When enabled allows you to use the onboard secondary PCI IDE The options are Enabled Default Disabled IDE Primary Master PIO Allows an automatic or a manual configuration of the PCI primary IDE hard disk master mode The options are Auto Default Mode 0 Mode 1 Mode 2 Mode 3 Mode 4 IDE Primary Slave PIO Allows an automatic or a manual configuration of the PCI p...

Page 57: ...evices cannot be detect automatically by the system BIOS or some driver diskettes came with your USB devices please set at DOS for allowing you to install the driver The options are Setup Default DOS Onboard FDD Controller When enabled the floppy diskette drive FDD controller is activated The options are Enabled Default Disabled Onboard UART1 If the serial port 1 uses the onboard I O controller yo...

Page 58: ... IR RX TX Onboard Parallel Port Allows you to select from a given set of parameters if the parallel port uses the onboard I O controller The options are 378 IRQ7 Default 278 IRQ5 3BC IRQ7 Disabled Parallel Port Mode Allows you to connect with an advanced printer The options are Nomral Default Extended EPP Mode ECP Mode ECP EPP Mode ECP Mode Use DMA If your select ECP mode to be the parallel port m...

Page 59: ...assword press Enter when you are prompted to enter password A message appears confirming the password is disabled Under the BIOS Feature Setup if System is selected under the Security Option field and the Supervisor Password is enabled you will be prompted for the Supervisor Password every time you try to enter the CMOS Setup Utility If System is selected and the User Password is enabled you will ...

Page 60: ...uick configuration of new hard drives This feature allows you to set the parameters of up to four IDE HDDs The option with Y are recommended by the system BIOS You may also keys in your own parameters instead of setting by the system BIOS After all settings press Esc key to return the main menu For confirmation enter the Standard CMOS Setup feature ...

Page 61: ...s Y to retain the Setup settings The following message will appear at the center of the screen to allow you to save data to CMOS and exit the setup utility SAVE to CMOS and EXIT Y N Exit without Saving If you select this feature the following message will appear at the center of the screen to allow you to exit the setup utility without saving CMOS modifications Quit Without Saving Y N NOTE Default...

Page 62: ...e and the Flash Utility file There are two files after extraction Flash BIOS utility e g flash531 exe and BIOS file e g 615J900 bin Use the standard Flash BIOS utility flash531 exe unless othewise specified Place the bootable floppy disk containing the BIOS file and the Flash Utility in drive a and reboot the system in MS DOS preferably Ver 6 22 At the A prompt type the corresponding Flash BIOS ut...

Page 63: ... successfully remove the floppy diskette and reboot the system holding the END key prior to power on until you enter CMOS setup If you do not do this the first time booting up after upgrading the BIOS the system will hang NOTE Do not turn off or reset the computer during the flash process It will corrupt the BIOS data ...

Page 64: ... read and modified from remote locations permitting remote configuration and boot up The utility is contained in a 3 5 diskette Two files DMICFG EXE and README TXT are included The DMICFG EXE must be run in real mode The README TXT records the version of DMICFG EXE NOTE 1 Duplicate the original diskette and use the backup one 2 End users are not encouraged to update DMI information Please contact ...

Page 65: ...ecord data about your computer system IDE Utility The mainboard package provide IDE utility in the attached utility disk for three operating systems Windows 95 Windows NT and OS2 Copy the attached file to your hard disk and execute the corresponding self decompressing executable file Then run SETUP EXE to install the drivers and documentation ...

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