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G486VPC

Rev. BA0+

System Board
User’

s Manual

- 30071030 -

Summary of Contents for G486VPC

Page 1: ...G486VPC Rev BA0 SystemBoard User sManual 30071030...

Page 2: ...nto an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Notice 1 The changes or modifications not expressly...

Page 3: ...heMemory 16 CPUInstallation 16 JumperSettingsforCPU 17 InstallingUpgradeCPUs 21 JumperSettingsforPCISlots 24 JumperSettingsforCMOSClean 25 JumperSettingsforEPROMType 25 FactoryTestingJumpers 26 Built...

Page 4: ...itWithoutSaving 43 SystemErrorReport 44 Chapter4 TroubleshootingChecklist 47 AppendixA TypesofModules 48 AppendixB MemoryandI OMaps 49 AppendixC PCII OPinAssignments 51 AppendixD ISAI OPinAssignments...

Page 5: ...m memory using x32 or x36 DRAM It also supports 128KB or 256KB Level 1 and Level 2 write back write through cache Equipped with one built in VL bus IDE connector and one ISA IDE con nector the G486VPC...

Page 6: ...MM sockets Supports memory parity check function 256KBx36 x32 1MBx36 x32 4MBx36 x32 and 16MBx36 x32 SM1 SM3 512KBx36 x32 2MBx36 x32 and 8MBx36 x32 SM1 or SM3 BIOS Award BIOS Windows 95 Plug and Play c...

Page 7: ...t Mode 3 and Mode 4 HDDs Secondary IDE is an ISA IDE to support one tape drive and one ATAPICD ROMdrive ZIFSocket 237 pin ZIF socket Intel Socket 3 Connectors 2 serial ports 1 parallel port 2 IDE conn...

Page 8: ...edge bracket with a 25 pin printer port cable and a PS 2 mouse port cable Option 2 One card edge bracket with two 9 pin serial port cables and a PS 2 mouse port cable One 25 pin printer port cable for...

Page 9: ...eted floors These areas also attract static electricity which can damage some circuits on your system board Make sure the power source has a properly grounded three pronged socket It is essential that...

Page 10: ...her components Perform the upgrade instruction procedures described at an ESD workstation only If such a station is not available you can provide some ESD protection by wearing an anti static wrist st...

Page 11: ...connectors and pins on the board Please refer to the handling instructions on pages 9 10 for proper handling tech niques 6 Insert the SIMMs into the SIMM sockets on the G486VPC The quantity and locat...

Page 12: ...COM B JP21 JP11 JP14 JP12 JP13 JP17 EPROM Battery PowerConnector CN2 CN1 JP22 JP16 JP18 JRN1 JP15 JP9 JP8 JP7 JP6 JP5 JP3 JP4 JP1 J6 J5 J4 J3 J2 J1 J7 UMC UM8669 VIA VT82C496 VIA VT82C505 VIA VT82C416...

Page 13: ...depending on the amount of memory you intend to install Refer to page 12 for the locations of the SIMM sockets Note The G486VPC system board supports fast page mode DRAM only InstallingaSIMModule A SI...

Page 14: ...6MB 8MB 9MB 12MB 16MB 17MB 18MB 20MB 21MB 24MB 32MB 33MB 36MB 48MB 64MB 2MB 3MB 4MB 6MB 18MB 8MB 9MB SM1 1 M 1 M 1 M 4 M 4 M 4 M 4 M 4 M 4 M 16M 16M 16M 16M 16M 16M 16M 16M 16M 16M 64M 2M D 2M D 2M D...

Page 15: ...MB 80MB 81MB 84MB 128MB 128MB 72MB 96MB SM1 8M D 8M D 8M D 16M D 32M D 32M D 32M D 32M D 32M D 32M D 32M D 64M 64M 64M 64M 64M 64M 64M 64M 64M 8M D 32M D SM2 1 M 4 M 4 M 4 M 16M 16M 16M 64M SM3 4 M 8M...

Page 16: ...ard can be configured to two different cache sizes 128KB and 256KB Regardless of the amount of cache memory installed one 32Kx8 is needed for tag RAM U7 to store the cacheable addresses Refer to page...

Page 17: ...8 9 10 On 1 2 3 4 5 6 7 8 9 10 Off Pin out Intel pin out Cyrix pin out CPUs Intel DX2 DX4 DX4 OverDrive PentiumOverDrive AMD Standard Enhanced 5x86 Cyrix 5x86 SGSThomson5x86 CyrixDX2 SGSThomsonDX2 Cy...

Page 18: ...x86 150 CyrixDX2 DX4 5x86 SGSThomsonDX2 DX4 5x86 AMDDX2SV8B 5x86 133 166 CPUs JumperJP16 JP16 Off O n O n Off JumperJP18 Intel DX2 DX4 DX4 OverDrive PentiumOverDrive AMDEnhanced DX4NV8T 5x86 CyrixDX2...

Page 19: ...X4 5x86 SGSThomsonDX2 DX4 5x86 CPUs 1 2 3 1 2On 1 2 3 2 3On 1 2 3 Off JumperJP22 JP22 1 2On 2 3On IntelDX2 DX4 AMD Standard Enhanced 5x86 CyrixDX2 DX4 5x86 SGSThomsonDX2 DX4 5x86 Intel DX4 OverDrive P...

Page 20: ...CPU Voltage Selection JP15 1 2On 2 3On 2 3On 2 3On 1 2 3 JP9 JP15 1 2On 1 2 3 JP9 JP15 2 3On JumpersJP3 JP5 CPU External Clock Selection JP3 JP4 JP5 2 3On 1 2On 2 3On 1 2On 2 3On 1 2On 2 3On 2 3On 1 2...

Page 21: ...eal is broken Before proceeding with the upgrade take note of the following The mi croprocessor and heat sink may be hot if the system has been running To avoid the possibility of a burn power the sys...

Page 22: ...y apply a small amount of sideways force to free the handle from its retaining tab Once clear of the tab the handle will open relatively easily The top plate will slide back Do not use screwdrivers or...

Page 23: ...ace The top plate will slide forward You will feel some resistance as the pres sure starts to secure the CPU in the socket This is normal and will not damage the CPU However if the handle is not compl...

Page 24: ...bles cards floppy disk cables must be clear of the CPU fan heatsink component in accordance with the space clearance discussed in the Clearance Requirements section of this manual Jumper Settings for...

Page 25: ...your body Set JC2 pins 2 and 3 to On for approximately 5 seconds then return to the default position pins 1 and 2 to On Put the cover back and power up your system 1 2On Normal Default JumperSettingsf...

Page 26: ...1 2On JP11 1 2On JP24 Off JP12 1 2On JP25 1 2On JP14 1 2On Jumper Settings for Lithium Battery JumperJC1 Lithium Battery The G486VPC system board comes with a lithium battery The default setting of J...

Page 27: ...ortConfiguration COMA COMB I OAddress 3F8h 2F8h Connecting the Serial Ports Two DB 9P serial port cables are provided with the system board At tach one serial port cable to connector J12 for the COM A...

Page 28: ...G486VPC system board has a built in floppy disk controller that supports two standard floppy disk drives You can install any 360KB 720KB 1 2MB 1 44MB or 2 88MB floppy disk drives ConnectingtheFloppyD...

Page 29: ...Header Note The IDE cable with a standard 40 pin connector without the keying mechanism can be installed in the PCI IDE shrouded header Be ex tremely careful to match the colored edge of the ribbon wi...

Page 30: ...e IDE hard drives be from the same manufac turer In a few cases drives from two different manufacturers will not function properly when used together The problem lies in the hard drives not the G486VP...

Page 31: ...card in one or the other of the shared slots at a time you cannot install devices in both slots at the same time Refer to page 12 for the locations of the expansion slots Note The BIOS needs to be co...

Page 32: ...ime and the system does not boot the following error message will appear Press Del to enter Setup If you have set a password and selected System in the Security Op tion of the BIOS Features Setup menu...

Page 33: ...ow keys to highlight Standard CMOS Setup and press Enter A screen similar to the one below will appear DateandTime This selection sets the time and date for the system Press F3 for the calendar HardDr...

Page 34: ...ard disk vendor or system manufacturer However we recommend you use the IDE HDD Auto Detection which provides a more efficient way to setup your hard drive 46 Predefined Drive Specifications The table...

Page 35: ...memory size extended memory size and the other memory size of your system You cannot alter these items your computer automatically detects and displays them The Other Memory size refers to the memory...

Page 36: ...on 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 a password only when trying to access setup Use the arrow keys...

Page 37: ...n to the default settings Press Esc after mak ing the changes to return to the main menu PowerManagementSetup Use the arrow keys to highlight Power Management Setup and press Enter A screen similar to...

Page 38: ...lts option loads the troubleshooting default val ues permanently stored in the ROM chips These settings are not opti mal and turn off all high performance features You should use these values only if...

Page 39: ...in the BIOS Fea tures Setup You will not be prompted for a password when you cold boot the system Use the arrow keys to highlight the Supervisor Password option and press Enter The message below will...

Page 40: ...o enter Setup allows a user to access only the User Password option that appears on the main screen Access to all other options is denied To set confirm verify disable or delete a user s password foll...

Page 41: ...drive access The maximum number of cylinders heads and sectors for Normal mode are 1024 16 and 63 respectively no Cylinders 1024 x no Heads 16 x no Sectors 63 x bytes per sector 512 528megabytes If yo...

Page 42: ...out LBA support in some cases you may not want the LBA mode This system board provides another alternative to support these kinds of HDDs The BIOS tells the operating system that the number of cylinde...

Page 43: ...odifications you have made will be written into the CMOS memory and the system will reboot You will once again see the initial diagnostics on the screen If you wish to make additional changes to the s...

Page 44: ...e following messages may be displayed if the BIOS detects an error during the POST CMOSBATTERYHASFAILED The CMOS battery is no longer functional It should be replaced Caution Danger of explosion if ba...

Page 45: ...Make sure the card is cor rectly and firmly installed in the bus Be sure the correct hard drive type is selected in Setup Also check to see if any jumper needs to be set correctly on the hard drive F...

Page 46: ...DINGSEGMENT This message is used in conjunction with the I O CHANNEL CHECK and RAM PARITY ERROR messages when the segment that has caused the problem has been isolated PRESSAKEYTOREBOOT This will be d...

Page 47: ...in doubt refer to the Hardware Installation section 2 Verify that all SIMMs are seated securely into the SIMM sockets 3 Make sure the SIMMs are in the correct locations 4 Check that all populated memo...

Page 48: ...e been tested with this board Most untested brands will work but a few may fail to do so SIMM 256KBx36 512KBx36 1MBx36 2MBx36 4MBx36 Brand OKI OKI Fujitsu Toshiba OKI Mitsubishi Fujitsu Mitsubishi OKI...

Page 49: ...RAM 00A0000to 128KBVideo Reserved for Graphics 00BFFFF DisplayMemory DisplayMemory 00C0000to 160KBI O ReservedforROMon 00E7FFF ExpansionROM I OAdapterCard 00E8000to 96KBROMon SystemBoardBIOS 00FFFFF t...

Page 50: ...2 0A0 08F Interrupt Controller 2 8259A 0C0 0DF DMA Controller 2 8237A 5 0E8 ShadowRAMandCacheControlBit 0F0 ClearNumericProcessor ExtensionBusy 0F1 Reset Numeric Processor Extension 0F8 0FF Numeric Pr...

Page 51: ...L N C AD 22 AD 20 Ground AD 18 AD 16 N C FRAME Ground TRDY Ground STOP N C SDONE SBO Ground PAR AD 15 N C AD 13 AD 11 Ground AD 09 C BE 0 N C AD 06 AD 04 Ground AD 02 AD 00 5V I O REQ64 5V 5V B 12V TC...

Page 52: ...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 Gnd SEMEMW S...

Page 53: ...upports 8 bit data transfer DMA controller 2 supports 16 bit data transfer AddressGenerationforDMAChannels3to0 Source DMAPageMemory DMAController1 Address A23 A16 A15 A0 AddressGenerationforDMAChannel...

Page 54: ...boardparallelportcanbeconfiguredtoeitherParallel Port1 2or3 ParallelPort1usesI Oaddress3BCh ParallelPort 2usesI Oaddress378h andParallelPort3usesI Oaddress278H Note The 16 levels of system interrupts...

Page 55: ...rboLEDConnector Pin 1 2 Function Signal LEDPower ConnectorJ2 GreenLEDConnector Pin 1 2 Function Signal LEDPower ConnectorJ3 SpeakerConnector Pin 1 2 3 4 Function Signal Reserved Ground 5V ConnectorJ4...

Page 56: ...LEDPower ConnectorJ7 Turbo Switch Connector Pin 1 2 Function Turbo G N D ConnectorsJ8andJ9 Primary and Secondary IDE Hard Disk Drive Connectors Pin 1 2 3 4 5 6 7 8 9 10 11 12 Function Reset Ground D...

Page 57: ...ata5 Data6 Data7 Ack Busy PaperEmpty Select Pin 14 15 16 17 18 19 20 21 22 23 24 25 Function Autofd Error Init Slctin Ground Ground Ground Ground Ground Ground Ground Ground ConnectorJ10 Parallel Prin...

Page 58: ...Ground DiskChange ConnectorJ12andJ13 COMAandCOMBSerialPorts Pin 1 2 3 4 5 6 7 8 9 DCD Data Carrier Detect RX ReceiveData TX TransmitData DTR DataTerminal Ready Ground SignalGround DSR DataSetReady RT...

Page 59: ...owerConnector Pin Function 1 2 3 4 5 6 7 8 9 10 11 12 PowerGood 5V 12V 12V Ground Ground Ground Ground 5V 5V 5V 5V ConnectorCN2 ATKeyboardConnector Function Pin 1 2 3 4 5 KeyboardClock KeyboardData Re...

Page 60: ...5 MicroscienceHH725 Syquest 3250 3425 Land Zone 305 615 615 940 940 615 511 733 901 820 855 855 319 733 663 977 977 1023 732 Size MB Write Precomp 128 300 300 512 512 None 256 None None None None None...

Page 61: ...023 1023 1023 1023 820 1023 300 300 0 None None None None None None None None None None None None None None None None None None 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 SeagateST...

Page 62: ...684 User Defined Heads 5 6 6 8 16 Sectors 26 17 26 33 38 65 40 61 100 203 Size MB Write Precomp None None None None None Land Zone 1023 852 852 775 685 Example Model Miniscribe 3053 6053RLL Miniscrib...

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