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G486-EVB

Features and Specifications

• Microprocessor

Intel 486SX-25/33, 486DX-33, 486DX2-50/66,

SL Enhanced CPUs, Intel486

DX2

OverDrive Processor,

80486DX4-75/100 (with optional 3.3V support)

AMD 486DXL low power CPU
Cyrix Cx486S-25/33, Cx486S2-50/66,

Cx486DX-25/33 and Cx486DX2-50/66

• Energy-Efficient Design

Intel SL Enhanced CPU ready
Supports system power management
Supports CPU stopped clock
Supports optional external power management

switch

Supports power saving video mode

•

Chipset

EC802G: system and cache controller
EC100: data buffer

• BIOS

Award system BIOS

• Cache Memory

128K, 256K or 512K
Supports direct map write-back or write-through

cache subsystem

• Memory Onboard

1MB to 64MB

Introduction

1-2

Содержание G486-EVB

Страница 1: ...G486 EVB Rev A SystemBoard User sManual D24341209...

Страница 2: ...nformation 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 its content at any time...

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

Страница 4: ...d Deep Green Cache Configuration Jumper Settings for Cache Memory CPU Installation and Upgrade Jumper Settings for CPUs Installing Upgrade CPUs Installing the System Board Initial Setup Program Award...

Страница 5: ...pendix B System Error Report Appendix C Memory and I O Maps Appendix D 16 Bit ISA I O Pin Assignments Appendix E VL Bus I O Pin Assignments Appendix F Connector Pin Assignments Appendix G Award BIOS H...

Страница 6: ...ncluding the energy saving SL En hanced CPUs The system board may be equipped with an 80486SX or 80486DX at 25 33 MHz an 80486DX2 at 50 66 MHz and when equipped with optional 3 3V support an 80486DX4...

Страница 7: ...6DX 25 33 and Cx486DX2 50 66 Energy Efficient Design Intel SL Enhanced CPU ready Supports system power management Supports CPU stopped clock Supports optional external power management switch Supports...

Страница 8: ...pend mode transitions using SMM type of CPUs and SMM software handler Built in hardware auto transition mechanism Microsoft APM supported PCB 4 layers 1 3 u Introduction PackageChecklist The G486 EVB...

Страница 9: ...dity extreme cold and water can damage the operational capabilities of your system board Avoid soft surfaces such as beds and carpeted floors which can hinder air circulation These areas also attract...

Страница 10: ...install it 2 Do all preparation work on a static free surface with components facing up 3 Hold the system board by its edges only Be careful not to touch any of the components contacts or connections...

Страница 11: ...4MB 8MB 16MB 32MB or 64MB of onboard memory When installing the HSIM modules populate Bank 0 first followed by Bank 1 and so on Failure to do so will cause the system board to work improperly The fol...

Страница 12: ...verview LocationsoftheHSIMMSocketsontheG486 EVBSystemBoard EC802G EC100G Bank3 Bank2 Bank1 Bank0 Pin1oftheHSIMMsocket InstallingtheModules HSIMMs simply snap into a socket on the system board Pin 1 of...

Страница 13: ...l it locks in place in the socket BoardConfiguration The G486 EVB is designed with jumpers to configure the board Make sure that the jumpers are set correctly before installing the system board into y...

Страница 14: ...rSettings LocationsofJumpersJP3andJP10 LocationsofJumpersJP3andJP10 ontheG486 EVBSystemBoard EC802G EC100G JP3 JP10 JumperJP3 Internal Battery Select The G486 EVB comes with an internal battery If you...

Страница 15: ...4 or your system will lose its CMOS settings when powered off JumperJP10 EPROMType Jumper JP10 should be set to match the type of EPROM installed on the G486 EVB system board On FlashEPROM28F010 Off E...

Страница 16: ...EnergyStarCompliantSystemBoard JumperSettingsforVL BusAdd onBoards LocationsofJumpersJP50andJP51 ontheG486 EVBSystemBoard JP50 JP51 2 8 u Installation Overview EC802G EC100G...

Страница 17: ...Zero Wait State set JP50 to On otherwise a system error may occur On WriteOneWaitState Default Off WriteZeroWaitState JumperJP51 CPUSpeedforVL BusBoard If a VL Bus board is installed in the G486 EVB s...

Страница 18: ...orted by the G486 EVB allow you to select from two different energy saving modes If you have a standard Intel 486DX SX OverDrive Processor or AMD 486DXL the G486 EVB will run in Light Green mode If yo...

Страница 19: ...d One 8K x 8 or 32K x 8 20ns SRAM is needed for tag RAM to store the cacheable addresses refer to the table below The location of the SRAM sockets on the system board is shown on the next page CacheSi...

Страница 20: ...e memory is limited to 32MB Any memory over 32MB will be non cacheable When the system board is installed with 256K cache it only supports a maximum of 48MB onboard memory If 512K cache is installed i...

Страница 21: ...EC100G LocationsofJumpersJP19 JP21andJP26 JP28 ontheG486 EVBSystemBoard JP20 JP21 JP26 JP27 JP19 JP28 CacheMemorySize Jumpers JP19 JP20 JP21 JP26 JP27 JP28 128KB 512KB 256KB Off 2 3On 2 3On O n O n O...

Страница 22: ...cation U29 of the system board to make upgrading flexible and easy Make sure the jumpers are set correctly before applying power or you may damage the CPU or system board The G486 EVB system board sup...

Страница 23: ...15 JumperSettingsforCPUs EC802G EC100G Locations of Jumpers JP17 JP18 JP22 JP25 JP29 JP31 JP32 JP36 JP37 JP49 S1 S2andS3ontheG486 EVBSystemBoard JP17 JP18 JP29 JP30 JP31 S 3 S 1 S 2 JP32 JP37 JP36 JP...

Страница 24: ...Intel 486SX 486DX DX2 or Intel486TM OverDrive Processor is installed Off O n JP49 Off O n JP25 2 1 3 2 3 On 1 3 2 1 2 On JP22 JP24 JP22 1 2On 1 2On 2 3On 2 3On 2 3On 2 3On Off JP49 Off Off Off Off Off...

Страница 25: ...O n O n Off O n O n Off Off O n JP30 Off 2 3On 2 3On 2 3On Off 2 3On 2 3On Off Off 2 3On JP29 2 3On 1 2On 1 2On 1 2On 2 3On 1 2On 1 2On 2 3On 2 3On 1 2On CPUType 486SX 486DX DX2 Intel486TM OverDrive...

Страница 26: ...5 Volt and 3 3 Volt CPUs Set Jumper Block JP32 according to the voltage of the CPU installed in your system board Warning If you are using a 3 3 Volt CPU this jumper block must be set to 3 3 Volt Oth...

Страница 27: ...tch the speed of the CPU installed on the G486 EVB system board CPUSpeed 25MHz 33MHz 40MHz JP36 1 2On 1 2On 1 2On S 1 O n O n O n JP37 1 2On 1 2On 1 2On S 2 Off O n O n S 3 Off O n Off Default setting...

Страница 28: ...on U29 of the system board The ZIF socket allows easy CPU upgrades and minimizes the chance of breaking off CPU pins The location of the ZIF socket on the G486 EVB system board is shown below 2 20 u I...

Страница 29: ...Insertion Force ZIF Socket Warning Open the socket only if actually installing an upgrade CPU The warranty on the original CPU will be voided if the S N seal is broken Installation of an OverDriveTM...

Страница 30: ...e of the ZIF socket upward Position the upgrade CPU above the socket Make sure pin 1 of the CPU is aligned with pin 1 of the socket Lower the chip until the pins are inserted properly in their corresp...

Страница 31: ...G486 EVB Lifting the Handle CPUPin1 PositioningtheCPUAbovetheZIFSocket Installation Overview u 2 23 Handle...

Страница 32: ...ace must be kept free above the CPU Do not run cables or other obstructions in this area The cables floppy drive hard drive CD ROM etc must be routed clear of the CPU with a minimum of 0 25 horizontal...

Страница 33: ...t static electricity discharges InstallingtheSystemBoard 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 man...

Страница 34: ...are dependent upon the memory configuration and type of modules you intend to use Step6 Set the appropriate jumpers Step7 Install the prepared G486 EVB system board into the case and replace the screw...

Страница 35: ...keys If you do not press the above keys at the correct time the following error message will appear Press F1 to continue Ctrl Alt Esc or Del to enter Setup If you have set a password and selected Syst...

Страница 36: ...up 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 the Standard CMOS Setup a...

Страница 37: ...the appropriate type for the drive The G486 EVB has 46 pre set types and one user definable type Use the Page Up or Page Down keys to select the appropriate type for the drive The table in Appendix G...

Страница 38: ...ter Note When HDD type is User the Mode option will be opened for the user to select their own HDD mode DriveAandDriveB These options are used to select the type of floppy disk drives installed in yo...

Страница 39: ...these items your computer automatically detects and displays them The Other Memory size refers to the memory located between 640K and 1024K This is the memory address space used for different applica...

Страница 40: ...e options may be Enabled or Disabled However if your system is using a VESA IDE these options should always be set to Disabled If you choose System in the Security Option you will be prompted for a pa...

Страница 41: ...ou to modify some functions to optimize system performance If you press Enter a screen similar to the one below will appear The IDE Hard Disk Prefetch IDE Turbo Read and IDE Turbo Write options are fu...

Страница 42: ...ighlight the Power Management Setup and press Enter a screen similar to the one below will appear Choosing User Defined in the Power Management option will allow you to set the time of the Standby Mod...

Страница 43: ...nless you are possibly having hardware problems Highlight this option on the main menu and press Enter The message below will appear LoadBIOSDefaults Y N N Type Y and press Enter to return to the BIOS...

Страница 44: ...option and press Enter The message below will appear EnterPassword Type in the password You are limited to eight charac ters Type in a password that is eight characters long or shorter When done the m...

Страница 45: ...nd Large If your HDD does not support LBA mode the LBA option under Mode will not appear If your HDD has 1024 or fewer cylinders the Large option under Mode will not appear The screen displays the par...

Страница 46: ...BA LogicalBlockAddressing Mode The LBA mode is a new HDD accessing method to overcome the 528 Megabyte limitation The number of cylinders heads and sectors shown on the screen may not be the actual nu...

Страница 47: ...BIOS tells the operating system that the number of cylinders is 1 2 of actual and that the number of heads is double the actual During disk access the reverse con version is done by the INT13h routine...

Страница 48: ...he message below will appear SavetoCMOSandExit Y N N Type Y and press Enter The following message will appear RebootSystem Y N N Type Y and press Enter The modifications you have made will be written...

Страница 49: ...Enter The system will reboot and you will once again see the initial diagnostics on the screen If you wish to make any changes to the setup press Ctrl Alt Esc or Del after memory testing is done Init...

Страница 50: ...ubt refer to the Board Configuration section 2 Verify that all HSIM modules are seated securely into the bank sockets 3 Make sure that the HSIM modules are in the correct location 4 Make sure that the...

Страница 51: ...ules The following modules have been tested with this board Most untested brands will work but a few may fail to do so ForHSIM256Kx36Modules Brand ChipNumber OKI M51C256A 70 ForHSIM1Mx36Modules Brand...

Страница 52: ...This code indicates that a video error 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...

Страница 53: ...DISPLAYSWITCHISSETINCORRECTLY Display switch on the motherboard can be set to other monochrome or color This indicates the switch is set to a different setting than indicated in Setup Determine which...

Страница 54: ...YBOARDERRORORNOKEYBOARDPRESENT Cannot initialize the keyboard Make sure the keyboard is attached correctly and no keys are being pressed during the boot If you are purposely configurating the system w...

Страница 55: ...OR messages when the segment that has caused the problem cannot be isolated OFFENDINGSEGMENT This message is used in conjunction with the I O CHANNEL CHECK and RAM PARITY ERROR messages when the segme...

Страница 56: ...GFORSEGMENT Indicates a parity error in Random Access Memory SYSTEMHALTED CTRL ALT DEL TOREBOOT Indicates the present boot attempt has been aborted and the system must be rebooted Press and hold down...

Страница 57: ...rdMemory 009FFFF BoardRAM 00A0000to 128KVideo Reserved for Graphics Display 00BFFFF DisplayMemory Memory 00C0000to 192KI O ReservedforROMonI O 00EFFFF ExpansionROM AdapterCard 00F0000to 64KROMon Syste...

Страница 58: ...rocessor ExtensionBusy 0F1 Reset Numeric Processor Extension 0F8 OFF NumericProcessorExtension 1F0 1F8 FixedDisk 200 207 GameI O 278 27F Parallel Printer Port 2 2F8 2FF Serial Port 2 300 31F Prototype...

Страница 59: ...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 SE...

Страница 60: ...4 ADR22 Vcc ADR20 ADR18 ADR16 ADR14 ADR12 ADR10 ADR08 GND ADR06 ADR04 WBACK BE0 Vcc BE1 BE2 GND BE3 ADS LRDY LDEV x LREQ x GND LGNT x Vcc ID2 ID3 ID4 LKEN LEADS B DAT00 DAT02 DAT04 DAT06 DAT08 GND DAT...

Страница 61: ...RDY 1 I I N A O LREQ x 4 1 I I O O M IO 1 O I O I RDYRTN 1 O O I I RESET 1 O O I I W R 1 O I O I WBACK 1 O O I N A power 8 ground 14 reserved 1 Total per slot 112 1 Direction of signals for the LBC if...

Страница 62: ...1 LEDSignal 2 Reserved 3 Ground 4 KeylockSignal 5 Ground v AppendixF ConnectorPinAssignments ConnectorJP14 External Battery Connector Pin 1 2 3 4 Function Voltage Reserved Ground Ground ConnectorJP40...

Страница 63: ...1 SpeakerConnector Pin 1 2 3 4 Function Signal Connector to Buzzer Ground 5V ConnectorD6 StandbyModeLED Pin 1 2 Function Ground Signal JumperJP44 StandbyModeSwitchConnector Pin 1 2 Function Ground Sig...

Страница 64: ...EnergyStarCompliantSystemBoard ConnectorJP45 Reset Switch Connector Pin Function 1 Reset 2 Ground F 3 u Appendix F...

Страница 65: ...eST4096 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 71 111 152 306 615 615 940 940 615 462 733 900 820 855 855 306 733 6...

Страница 66: ...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 918 820 1024 1024 809...

Страница 67: ...G486 EVB Rev A SystemBoard User sManual 24341209...

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