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G486VPB

Appendix C: Memory & I/O Maps

Memory Address Map

Address

Name

Function

0000000 to

640K System

System Board Memory

009FFFF

Board RAM

00A0000 to

128K Video

Reserved for Graphics Display

00BFFFF

Display Memory

Memory

00C0000 to

160K I/O

Reserved for ROM on I/O

00E7FFF

Expansion ROM

Adapter Card

00E8000 to

96K ROM on

System Board BIOS

00FFFFF

the System Board

0100000 to

Maximum

System Board Memory

3FFFFFF

Memory 128M

Summary of Contents for G486VPB

Page 1: ...G486VPB Rev 0 SystemBoard User sManual D28750815...

Page 2: ...articular purpose The information in this document is subject to change without notice DFI Inc reserves the right to make revisions to this publication and to make changes to any and or all parts of i...

Page 3: ...ar installation If this equipment does cause harmful interference to radio or television recep tion which can be determined by turning the equipment off and on the user is encouraged to try to correct...

Page 4: ...6 CPU Installation 1 7 Jumpers for CPU Voltage Select 1 9 Jumpers for CPU External Clock Select 2 0 Jumpers for CPU Type Select 2 1 Installing Upgrade CPU 32 Memory Installation 3 7 Installing the Mo...

Page 5: ...ults 6 6 Password Setting 6 7 Supervisor Password 6 7 User Password 6 8 IDE HDD Auto Detection 6 9 Save Exit Setup 7 0 Exit Without Saving 7 0 IDE Device Drivers 71 Troubleshooting Checklist 72 Append...

Page 6: ...pgrade their CPUs It also supports an optional Flash EPROM for easy BIOS upgrades Flash EPROM is a memory chip for the storage of BIOS which can be erased in bulk or modified using a software utility...

Page 7: ...86DX4 75 100 SV8B Cyrix 486DX2V 50 66 80 486DX4 100 5x86 100 Chipset VIA VT82C496G system and cache controller VT82C505 Host to PCI bridge VT82C406 peripheral chip PowerManagement Supports System Mana...

Page 8: ...rs Primary IDE connector provides a VL bus IDE interface to support up to two Mode 4 enhanced HDDs Secondary IDE connector provides an ISA IDE Interface to support an ATAPI compliant CD ROM or a tape...

Page 9: ...following items The G486VPB system board The G486VPB user s manual One IDE driver diskette One 34 pin floppy disk drive cable Two 40 pin IDE hard disk cables One 25 pin printer port cable for chassis...

Page 10: ...s also attract static electricity which can damage some circuits on your system board Make sure that the power source has a properly grounded three pronged socket It is essential that the power connec...

Page 11: ...eful not to touch any of the components contacts or connections especially gold contacts on the board 5 Avoid touching the pins or contacts on all modules and connectors Hold modules and connectors by...

Page 12: ...allation Cache configration CPU installation Memory modules installation Other jumper settings Installing the system board Built in Ports Expansion cards installation Initial Setup Program Installatio...

Page 13: ...LocationsofJumpersontheG486VPB...

Page 14: ...8KB default size 256KB and 512KB Regardless of the amount of cache memory installed one 8Kx8 or 32Kx8 is needed for tag RAM to store the cacheable addresses The locations of the SRAM sockets and Jumpe...

Page 15: ...cache memory use four pieces of 128Kx8 SRAM Default setting DataSRAM U4 U5 U9 U10 TagSRAM U21 Cacheable Range CacheSize 128MB 64MB 32MB 32Kx8x1 32Kx8x1 8Kx8x1 128Kx8x4 64Kx8x4 32Kx8x4 512KB 256KB 128...

Page 16: ...e refer to the figure on page 14 for the locations of Jumpers JP10 JP11 JP12 JP13 and JP14 128KB CacheSRAM Default 1 3 2 1 3 2 JP11 JP10 JP12 JP13 JP14 256KBCacheSRAM 1 3 2 1 3 2 JP11 JP10 JP12 JP13 J...

Page 17: ...Zero Inser tion Force ZIF socket at location U17 please refer to the next page of the system board This socket is de signed for the easy removal of the old CPU and the easy insertion of the upgrade CP...

Page 18: ...PCI ISASystemBoard 18 LocationsofZIFSocket Jumpers JP6 JP7 JP9 JP15 JP20 JP21 JP23 JP30andJRN1 JRN3 ontheG486VPBSystemBoard U17...

Page 19: ...Am486DX DXL DXL2 Cyrix 486SX DX DX2 SGS Thompson ST486DX2 3 45V CPUs Intel 486DX4 AMD Am486DX2 DX4 NV8T Am486DX2 DX4 SV8B UMC U5SD Cyrix 486DX2 V50 486DX4 100 5x86 100 5VCPUs 3 45VCPUs JumpersJP21 JP...

Page 20: ...83MHz InternalClockSpeed JumpersJP15 JP17andJP19 CPU External Clock Selection 25MHz 1 3 2 JP152 3On JP171 2On andJP192 3On 25MHz JP19 JP17 JP15 33MHz 1 3 2 JP152 3On JP172 3On andJP191 2On 33MHz Defa...

Page 21: ...G486VPB 21 JumperSettingsforCPUTypeSelect Intel486SX Pin 1...

Page 22: ...PCI ISASystemBoard 22 Intel 486DX DX2 Default Pin 1...

Page 23: ...G486VPB 23 IntelDX4 Pin 1...

Page 24: ...PCI ISASystemBoard 24 Intel DX4 OverDrive Pentium OverDrive Pin 1...

Page 25: ...G486VPB 25 AMDAm486DX2SV8B Pin 1...

Page 26: ...PCI ISASystemBoard 26 AMDAm486DX2NV8T Pin 1...

Page 27: ...G486VPB 27 AMDAm486DX4SV8B Am486DX4NV8T Pin 1...

Page 28: ...PCI ISASystemBoard 28 UMCU5SD Pin 1...

Page 29: ...G486VPB 29 UMCU5S U5SLV Pin 1...

Page 30: ...PCI ISASystemBoard 30 CyrixCx486DX DX2 DX4 SGSThompsonST486DX2 Pin 1 Cyrix Cx486DX DX2 DX4 or SGS ST486DX2 Pin1...

Page 31: ...G486VPB 31 CyrixCx5x86 Pin 1...

Page 32: ...o prevent improper OverDrive Processor installation the ZIF socket has a Plug Keying mechanism Several holes in the socket are plugged so OverDrive Processors will go in only one way If you cannot eas...

Page 33: ...nce the upgrade is installed on the system board the processor and heat sink require certain space clearances The clearance above the OverDrive processor s fan heat sink must be at least 0 4 in The cl...

Page 34: ...will slide back Do not use screwdrivers or other tools to open the socket or damage may occur to the system or socket It may be necessary to initially apply a small amount of sideways force to free t...

Page 35: ...ease verify you have pin 1 of the CPU aligned with pin 1 of the socket Applying too much pressure can damage the CPU or the socket 4 Push the handle down until the handle locks into its place The top...

Page 36: ...e temperature of the air entering the fan heatsink cannot exceed 45 C In order to provide proper airflow to the CPU all movable obstructions power supply cables cards floppy disk cables must be clear...

Page 37: ...tor The SIM sockets are divided into four banks on the system board The G486VPB uses 256Kx36 512Kx36 1Mx36 2Mx36 4Mx36 8Mx36 or 16Mx36 HSIM modules installed in four banks Non parity x32 SIMMs can als...

Page 38: ...64M 65MB 64M 1 M 68MB 64M 4 M 128MB 64M 64M 2MB 2M D 3MB 2M D 1 M 4MB 2M D 2M D 6MB 2M D 4 M 10MB 2M D 8M D 18MB 2M D 16M 8MB 8M D 9MB 8M D 1 M 12MB 8M D 4 M 16MB 8M D 8M D 24MB 8M D 16M 72MB 8M D 64M...

Page 39: ...module simply snaps into a socket on the system board Pin 1 of the HSIM module must corre spond with Pin 1 of the socket 1 Position the HSIM module above the socket with the notch in the module aligne...

Page 40: ...per Settings for Internal External Battery CMOS Clean Flash EPROM PS 2Mouse CPUSpeedforPCISlotsandParallelPort ECPDMAChannelSetting JP3 JP4 JP2 JP31 JP1 JP5 JP22 JP8 Locations of Jumpers JP1 JP2 JP3 J...

Page 41: ...e reconfigured with the default values stored in the ROM BIOS To load the default values set JP22 pins 2 and 3 to On for approximately two minutes then return to the default position 1 2On Normal Defa...

Page 42: ...h serial and mouse port By default the mouse port is disabled If you intend to use a PS 2 mouse the port must be enabled The PS 2 mouse port uses IRQ12 but when the PS 2 mouse port is disabled IRQ12 i...

Page 43: ...d is greater than 33MHz If the CPU external clock speed is less than or equal to 33MHz set Jumpers JP4 and JP8 pins 1 and 2 to On 3 2 1 3 2 1 2 3On CPUExternalClock Speed 33MHz 1 2On CPUExternalClockS...

Page 44: ...modes the printer port requires a DMA channel Set Jumper JP1 to assign either DMA Channel 1 or DMA Channel 3 to the ECP port Use a DMA channel that does not conflict with your add in cards For ex amp...

Page 45: ...p for electrostatic discharge protection Step1 Unlock your system unit Turn off the power and dis connect all power cords and cables Step2 Remove the system unit cover Refer to the manufac turer s ins...

Page 46: ...he SIMM banks on the G486VPB The quantity and location of the SIM modules is dependent upon the memory configuration and type of modules you intend to use Step7 Install the CPU Be sure Pin 1 of the CP...

Page 47: ...Ports The G486VPB system board is equipped with two serial ports one ECP EPP parallel printer port one FDD connector two IDE hard disk connectors and one PS 2 mouse port Locations of the Built in Por...

Page 48: ...heSerialPorts Two DB 9P serial port cables are provided with the motherboard They are mounted on a card edge bracket along with the PS 2 mouse cable The upper serial port cable should be used for the...

Page 49: ...ing your PC to a parallel printer This port is compatible with both IBM AT printer ports and the new high speed bi directional Extended Capabilities Port standard The parallel port on your system boar...

Page 50: ...ble which came with the motherboard to Connector J5 on the G486VPB system board Make sure the colored stripe on the ribbon cable aligns with pin 1 of Connector J5 Use a small nutdriver to mount the ca...

Page 51: ...k drives You can install any 360KB 720KB 1 2MB 1 44MB floppy disk drives 2 88MB optional ConnectingtheFloppyDiskCable TheFloppyDiskConnectoronthe G486VPBSystemBoard Step1 Install the 34 pin header con...

Page 52: ...rd Disk Interface The G486VPB system board is equipped with one VL Bus IDE connector and one ISA IDE connector that will interface four IDE Integrated Drive Electronics hard disk drives An IDE drive i...

Page 53: ...le into the primary disk con nector J7 If you are adding a third or fourth IDE device install the 40 pin connector of the other IDE cable into the secondary connector J6 Make sure the colored edge of...

Page 54: ...es drives from two manufacturers will not function properly when used together The problem lies in the hard drives not the G486VPB system board Preparing an IDE Drive for Use IDE disk drives are alrea...

Page 55: ...n mouse port cable which came in the G486VPB box to Connector CN3 Make sure the brown wire on the PS 2 mouse connector aligns with pin 1 of connector CN3 The other end of the wires are attached to the...

Page 56: ...d slots at a time you cannot install devices in both slots Due to the size of the CPU and heatsink fan component card size is limited The location of the expansion slots are shown below Note The syste...

Page 57: ...ys If you do not press these keys at the correct time and the system does not boot the following error mes sage will appear PressDeltoenterSetup If you have set a password and selected System in the S...

Page 58: ...ly to enter the Setup utility A screen similar to the one below will appear Use the arrow keys to highlight the option you want and press Enter StandardCMOSSetup Use the arrow keys to highlight Standa...

Page 59: ...the IDE HDD Auto Detection from the main CMOS setup menu or you can set it manually The G486VPB has 46 pre set types and one user definable type Use the Page Up or Page Down keys to select the appropr...

Page 60: ...are used to select the type of floppy disk drives installed in your system If neither drive is present select None Make sure you choose the correct drive type otherwise your system might format the d...

Page 61: ...splays them The Other Memory size refers to the memory located in the 640K to 1024K address space This is the memory used for different applications DOS uses this area to load device drivers to keep a...

Page 62: ...f the hard disk drive If you choose System in the Security Option you will be prompted for a password every time you cold boot your system or access setup If you choose Setup you will be prompted for...

Page 63: ...rallel port floppy disk controller and hard disk controller If you press Enter a screen similar to the one below will appear Use the arrow keys to move the highlight bar to the option you wish to chan...

Page 64: ...n similar to one below will appear Choosing Enabled in the Power Management option will allow you to set Doze Timer Sleep Timer and Sleep Mode This will enable your system to reach one of the followin...

Page 65: ...Configuration Setup and press Enter a screen similar to the one below will appear The G486VPB system board supports four PCI slots Each slot may be assigned INT value if the card in stalled in the sl...

Page 66: ...the BIOS setup default values After pressing Enter you will be returned to the main menu LoadSetupDefaults The Setup default values are very stable and should be selected as standard values for your s...

Page 67: ...rized entry If you set a supervisor s password when Setup option is selected under the BIOS Features Setup only access to setup will be denied when incorrect password is entered You will not be prompt...

Page 68: ...user to have access only to your system but not to setup Using user s password to enter Setup allows a user to access only User Password option that appears on the main screen Access to all other opt...

Page 69: ...ht this option and press Enter A screen similar to the one below will appear The screen displays the parameters detected and allows you to accept or reject the parameters Type Y and press Enter to acc...

Page 70: ...ill once again see the initial diagnostics on the screen If you wish to make additional changes to the setup press Ctrl Alt Esc simultaneously or Del after memory testing is done ExitWithoutSaving If...

Page 71: ...e IDE device drivers should be installed under the INSTALL EXE Utility The G486VPB comes with IDE driver diskette s The diskette includes drivers for Microsoft Windows 3 1 and 3 11 Windows NT 3 1 and...

Page 72: ...at all SIM modules are seated securely into the bank sockets 3 Make sure that the SIM modules are in the correct locations 4 Check that all populated memory banks are filled with valid size SIM module...

Page 73: ...he battery to the left It will slide out of the socket Caution Battery may explode if mistreated Do not recharge disassemble or dispose of in fire 3VLithium Battery You should replace the old battery...

Page 74: ...8Mx36 and 16Mx36 SIM modules The follow ing modules have been tested with this board Most untested brands will work but a few may fail to do so ForSIM256Kx36Modules Brand ChipNumber OKI M51C256A 70 F...

Page 75: ...G486VPB 75 ForSIM2Mx36Modules Brand ChipNumber OKI M511000B ForSIM4Mx36Modules Brand ChipNumber OKI M514100A 70S ForSIM8Mx36Modules Brand ChipNumber OKI M514100AL 70K...

Page 76: ...ror has occurred and the BIOS cannot initialize the video screen to display any additional information This beep code consists of a single long beep followed by two short beeps ErrorMessages One or mo...

Page 77: ...t device then reboot the system DISKETTEDRIVESORTYPESMISMATCHERROR RUN SETUP Type of diskette drive installed in the system is different from the CMOS definition Run setup to reconfigure the drive typ...

Page 78: ...ENT Cannot find or initialize the floppy drive controller Make sure the controller is installed correctly and firmly If there are no floppy drives installed be sure the Diskette Drive selection in Set...

Page 79: ...lready written to memory Use the location along with your system s memory map to locate the bad chip OFFENDINGADDRESSNOTFOUND This message is used in conjunction with the I O CHANNEL CHECK and RAM PAR...

Page 80: ...led and continue to boot You can also reboot the system with the NMI enabled RAMPARITYERROR CHECKINGFORSEGMENT Indicates a parity error in Random Access Memory SYSTEMHALTED CTRL ALT DEL TOREBOOT Indic...

Page 81: ...SystemBoardMemory 009FFFF BoardRAM 00A0000to 128KVideo Reserved for Graphics Display 00BFFFF DisplayMemory Memory 00C0000to 160KI O ReservedforROMonI O 00E7FFF ExpansionROM AdapterCard 00E8000to 96KRO...

Page 82: ...mericProcessor ExtensionBusy 0F1 Reset Numeric Processor Extension 0F8 OFF Numeric Processor Extension 1F0 1F8 FixedDisk 200 207 GameI O 278 27F Parallel Printer Port 2 2F8 2FF Serial Port 2 300 31F P...

Page 83: ...L 3 3V AD 22 AD 20 Ground AD 18 AD 16 3 3V FRAME Ground TRDY Ground STOP 3 3V SDONE SBO Ground PAR AD 15 3 3V AD 13 AD 11 Ground AD 09 C BE 0 3 3V AD 06 AD 04 Ground AD 02 AD 00 5V I O REQ64 5V 5V B 1...

Page 84: ...01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 C SBHE LA23 LA22 LA21 LA20 LA19 LA18 LA17 Memr Memw SD08 SD09 SD10 SD11 SD12 SD13 SD14 SD15 B Gnd ResetDrv 5VDC IRQ9 5VDC DRQ2 12VDC O W S 12VDC G...

Page 85: ...G486VPB 85 v AppendixF ConnectorPinAssignments LocationsofConnectorsontheSystemBoard J15 GreenLED J14 TurboLED J13 TurboSW J12 Reset J11 Speaker J10 Keylock J9 IDE1LED J8 IDE2LED...

Page 86: ...llel Printer Port Pin 1 2 3 4 5 6 7 8 9 Function DCD Data Carrier Detect RX ReceiveData TX TransmitData DTR DataTerminalReady Ground SignalGround DSR DataSetReady RTS RequesttoSend CTS CleartoSend RI...

Page 87: ...3 4 5 6 7 8 Function Ground DENSEL Ground Reserved Ground Drate0 Ground Index Pin 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 Function Ack Busy PaperEmpty Select Autofd Error Init...

Page 88: ...1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 Function Ground MTR0 Ground DR1 Ground DR0 Ground MTR1 Drate1 Dir Ground Step Ground WriteData Ground WriteGate Ground Track0 MSEN W...

Page 89: ...y IDE Hard Disk Drive Connectors Pin 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 Function Reset Ground D 7 D 8 D 6 D 9 D 5 D10 D 4 D11 D 3 D12 D 2 D13 D 1 D14 D 0...

Page 90: ...D Pin 1 2 Function Signal LEDPower Function Ground IOChannelReady BALE Reserved Ground IRQ14 IOCS16 SA1 Reserved SA0 SA2 HCS0 HCS1 LED Ground Pin 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3...

Page 91: ...lockConnector ConnectorJP12 Reset Switch Connector ConnectorJ11 SpeakerConnector Pin Function 1 Ground 2 Reset Function Signal Reserved Ground 5V Pin 1 2 3 4 Pin Function 1 LEDSignal 2 Reserved 3 Grou...

Page 92: ...temBoard 92 ConnectorJ13 Turbo Green Button Connector ConnectorJ14 TurboLEDConnector ConnectorJ15 GreenLEDConnector Pin Function 1 GND 2 Signal Pin Function 1 Signal 2 LEDPower Pin Function 1 Signal 2...

Page 93: ...3 4 Function 3 6 Lithium Battery Key GND GND ConnectorCN3 PS 2MouseConnector Pin 1 2 3 4 5 6 Function MouseData Reserved Ground 5V MouseClock Reserved ConnectorCN2 Keyboard Connector Pin 1 2 3 4 5 Fu...

Page 94: ...PCI ISASystemBoard 94 ConnectorPL1 PowerConnector Pin 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 Function PowerGood 5V 12V 12V Ground Ground Ground Ground 5V 5V 5V 5V...

Page 95: ...51 SeagateST4096 Maxtor2085 Maxtor2140 PriamS14 Maxtor2190 PriamS19 10 20 30 62 46 20 30 30 112 20 35 49 20 42 20 40 56 59 30 42 30 10 40 76 71 111 152 306 615 615 940 940 615 462 733 900 820 855 855...

Page 96: ...Miniscribe 3053 6053 RLL Miniscribe 3650 Miniscribe3675RLL ConnerCP3104 ConnerCP3204 68 93 83 69 85 102 110 119 17 136 114 40 42 65 40 61 100 203 1024 918 925 1024 1024 1024 1024 1024 1024 1024 918 82...

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