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DFI G486-EVB User Manual

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G486-EVB
Rev. A
System Board
User' s Manual
- D24341209 -

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Summary of Contents for DFI G486-EVB

  • Page 1 G486-EVB Rev. A System Board User’ s Manual - D24341209 -...
  • Page 2 Further, DFI, Inc. assumes no responsibility for any errors that may appear in this document. DFI is a registered trademark, and G486-EVB is a trademark of Diamond Flower, Inc. All other product names mentioned are trademarks or registered trade-...
  • Page 3 v FCC Statement on Class B This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interfer- ence when the equipment is operated in a residential installation.

  • Page 4: Table Of Contents

    v Table of Contents v Introduction ................. Features and Specifications ..........Installation Overview ..............Preparing the Area ..............Handling the System Board ..........Tips in Handling the System Board ....... Hardware Installation ............. Memory Installation ............Installing the Modules ..........Board Configuration ...............
  • Page 5 Troubleshooting ................Appendix A: Types of Modules ..........Appendix 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 Hard Disk Table ......

  • Page 6: Introduction

    486DXL low power processor, Cyrix Cx486DX/DX2 and Cx486S/S2 CPUs. The G486-EVB uses 256K x 36, 1M x 36 and 4M x 36 HSIM modules. The memory can be configured to six different sizes from 1MB to 64MB. In addition, the...

  • Page 7: Features And Specifications

    G486-EVB Features and Specifications • Microprocessor Intel 486SX-25/33, 486DX-33, 486DX2-50/66, SL Enhanced CPUs, Intel486 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...

  • Page 8: Package Checklist

    Microsoft APM supported. • PCB 4 layers Package Checklist The G486-EVB package contains the following items: • The G486-EVB system board • One G486-EVB user’ s manual If either of these items is missing or damaged, please contact your dealer or sales representative for assistance.

  • Page 9: Installation Overview

    G486-EVB v Installation Overview This chapter summarizes the steps in installing the G486-EVB system board into your system unit. It also includes a description of the area in which you must work and directions for memory installation. Before installing the system board, obtain the memory you plan to install.

  • Page 10: Handling The System Board

    Hardware Installation Memory Installation The G486-EVB system board can support 1MB to 64MB of memory using HSIMM. HSIMM is an acro- nym for High Density Single In-line Memory Module. A HSIMM consists of RAM chips soldered onto a small circuit board.
  • Page 11 G486-EVB The HSIMM sockets are divided into four banks on the system board. The G486-EVB system board uses 256K x 36, 1M x 36 and 4M x 36 HSIM modules. A list of tested memory brands and speeds is given in Appendix A.

  • Page 12: Installing The Modules

    Bank 1 Bank 0 EC802G EC100G Locations of the HSIMM Sockets on the G486-EVB System Board Installing the Modules HSIMMs simply snap into a socket on the system board. Pin 1 of the HSIMM must correspond with Pin 1 of the socket.

  • Page 13: Board Configuration

    Tilt the module upright until it locks in place in the socket. Board Configuration 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 your system unit.

  • Page 14: Jumper Settings

    Locations of Jumpers JP3 and JP10 on the G486-EVB System Board Jumper JP3 Internal Battery Select The G486-EVB comes with an internal battery. If you wish to install an external battery, set JP3 pins 1 and 2 to On. 2-6 u Installation Overview...
  • Page 15 Off: EPROM 27512 (Default) The jumper below is for factory testing only and should always be set to its default configuration. Reconfiguring this jumper will cause problems with your G486-EVB system board. Jumper JP15 - On Installation Overview u 2-7...

  • Page 16: Jumper Settings For Vl-Bus Add-On Boards

    Energy Star Compliant System Board Jumper Settings for VL-Bus Add-on Boards EC802G EC100G JP51 JP50 Locations of Jumpers JP50 and JP51 on the G486-EVB System Board 2-8 u Installation Overview...
  • Page 17 Jumper JP51 CPU Speed for VL-Bus Board If a VL-Bus board is installed in the G486-EVB system board, Jumper JP51 must be set to On if the CPU speed is greater than 33MHz. Set JP51 to Off if the CPU speed is less than or equal to 33MHz.

  • Page 18: Jumper Settings For Light And Deep Green

    If you have a standard Intel 486DX, SX, OverDrive Processor or AMD 486DXL, the G486-EVB will run in Light Green mode. If you have an energy saving SL Enhanced Intel 486DX, 486DX4 or Cyrix Cx486S/Cx486S2 CPU, then the G486-EVB will run in Deep Green mode.

  • Page 19: Cache Configuration

    Processor, AMD 486DXL (Default) Cache Configuration The G486-EVB system board can be configured to three different cache sizes: 128KB, 256KB and 512KB. 128KB of cache memory is the default size. Either 32K x 8 (20ns) or 128K x 8 (20ns) SRAM chips are used for cache depending on the size of cache desired.
  • Page 20 256K cache, it only supports a maximum of 48MB onboard memory. If 512K cache is installed, it will support up to 64MB. EC802G EC100G Locations of the SRAMs on the G486-EVB System Board 2-12 u Installation Overview...

  • Page 21: Jumper Settings For Cache Memory

    G486-EVB Jumper Settings for Cache Memory JP19 JP26 JP27 JP28 JP21 JP20 EC802G EC100G Locations of Jumpers JP19-JP21 and JP26-JP28 on the G486-EVB System Board Cache Memory Size Jumpers 128KB* 256KB 512KB JP19 2-3 On JP20 2-3 On 1-2 On...

  • Page 22: Cpu Installation And Upgrade

    1-2: On JP26, JP27 or JP28 CPU Installation and Upgrade The G486-EVB is equipped with a 237-pin Zero Insertion Force (ZIF) socket at location 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.

  • Page 23: Jumper Settings For Cpus

    JP22 JP23 JP24 JP29 JP30 EC802G JP25 JP31 EC100G JP17 JP18 JP32 JP37 JP36 Socket JP49 Locations of Jumpers JP17, JP18, JP22-JP25, JP29-JP31, JP32, JP36, JP37, JP49, S1, S2 and S3 on the G486-EVB System Board Installation Overview u 2-15...
  • Page 24 SMI CPU Type Selection These jumpers should be set to match the type of Sys- tem Management Mode (SMM) CPU installed on the G486-EVB system board. These jumpers will be ignored if an Intel 486SX, 486DX/DX2 or Intel486 OverDrive Processor is installed.
  • Page 25 G486-EVB Jumpers JP17, JP18, JP29-JP31 CPU Type Selection These jumpers should be set to match the type of the CPU installed on the G486-EVB system board. JP18 JP29 JP30 JP31 CPU Type JP17 486SX 2-3 On 486DX/DX2 1-2 On 2-3 On...
  • Page 26 Energy Star Compliant System Board Jumper Block JP32 CPU Voltage The G486-EVB supports 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.
  • Page 27 G486-EVB Jumpers JP36, JP37, S1, S2 and S3 Clock Selection These jumpers should be set to match the speed of the CPU installed on the G486-EVB system board. CPU Speed JP36 JP37 25MHz 1-2 On 1-2 On 33MHz* 1-2 On...

  • Page 28: Installing Upgrade Cpus

    CPU pins. The location of the ZIF socket on the G486-EVB system board is shown below. EC802G EC100G Socket Pin 1 of the socket Location of the ZIF Socket on the G486-EVB System Board 2-20 u Installation Overview...
  • Page 29 G486-EVB 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 OverDrive Processor will not affect the original system warranty. The 237-pin ZIF socket consists of four rows of pin holes on each side.
  • Page 30 Energy Star Compliant System Board To install an upgrade CPU, move the handle 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 corresponding holes.
  • Page 31 G486-EVB Handle Lifting the Handle CPU Pin 1 Positioning the CPU Above the ZIF Socket Installation Overview u 2-23...
  • Page 32 Energy Star Compliant System Board Gently push the handle down until the handle locks into place. You will hear a click when the handle is secure. Warning: The cables (floppy drive, hard drive, CD-ROM, etc.) must be routed clear of the CPU with a minimum of 0.25”...

  • Page 33: Installing The System Board

    G486-EVB Installing the System Board Before installing the system board into your system unit, you should prepare the tools you will use: You will need: • one medium size, flat-bladed screwdriver • one medium Phillips screwdriver • one nutdriver, 3/16" or 5 mm •...
  • Page 34 Energy Star Compliant System Board Step 5 Insert the HSIM modules into the HSIMM banks on the G486-EVB. The quantity and location of the HSIM modules are dependent upon the memory configuration and type of modules you intend to use.

  • Page 35: Initial Setup Program

    G486-EVB v Initial Setup Program After you power up your system, the BIOS message appears on your screen and the memory count begins. After the memory test, the following message will appear on the screen: Press CTRL-ALT-ESC/DEL to enter setup...

  • Page 36: Award Bios Cmos Setup Utility

    Energy Star Compliant System Board Award BIOS CMOS Setup Utility Press <Ctrl> <Alt> <Esc> or <Del> 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>.
  • Page 37 Drive C and Drive D If you have added a hard drive, you must select 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.
  • Page 38 Energy Star Compliant System Board If none of the pre-set types is appropriate for your hard drive, choose “User,” which is the user-definable type. To use this type, highlight either hard disk C or D, depending on your hard drive configuration. Use the arrow keys until type “User”...

  • Page 39: Bios Features Setup

    G486-EVB All, But Keyboard: The system will stop for any errors except a keyboard error. All, But Diskette: The system will stop for any errors except a disk error. All, But Disk/Key: The system will stop for any errors except a keyboard or disk error.
  • Page 40 Energy Star Compliant System Board The Virus Warning option may be set to “enabled” or “disabled.” When enabled, the BIOS issues a warning when any program or virus sends a Disk Format com- mand or attempts to write to the boot sector of the hard disk drive.

  • Page 41: Chipset Features Setup

    Press <Esc> after making the changes to return to the main menu. Chipset Features Setup The G486-EVB uses the EFAR EC802G chipset. The Chipset Features Setup allows you to modify some functions to optimize system performance. If you press <Enter>, a screen similar to the one below will appear.

  • Page 42: Power Management Setup

    Energy Star Compliant System Board Up>, <Page Down>, <+> or <-> keys to make the corresponding changes. If the changes you make are incorrect or you change your mind, press <F6> or <F7> to return to the default settings. Press <Esc> after making the changes to return to the main menu.

  • Page 43: Load Bios Defaults

    G486-EVB Use the arrow keys to move the highlight bar to the option you wish to change or modify. Use the <Page Up>, <Page Down>, <+> or <-> keys to make the corresponding changes. Load BIOS Defaults If, for some reason, the CMOS becomes corrupted, the system can be reconfigured with the default values stored in the ROM chips.

  • Page 44: Password Setting

    Energy Star Compliant System Board Type “Y” and press <Enter> to return to the Setup default values. After pressing <Enter>, you will be returned to the main menu. Password Setting If you want to set a password, make sure that the Secu- rity Option under the BIOS Features Setup is set to “System”...

  • Page 45: Ide Hdd Auto Detection

    <Enter>. A screen similar to the one below will appear. The G486-EVB supports three HDD modes: Normal, LBA, and 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”...
  • Page 46 Energy Star Compliant System Board Normal Mode Normal mode is the generic access mode in which neither the BIOS nor the IDE controller will make any transformations during accessing. The maximum number of cylinders, heads and sectors for Normal mode are 1024, 16 and 63. no.
  • Page 47 8.4 Gigabyte Large Mode The Large mode is the extended HDD access mode supported by the G486-EVB system board. Some IDE HDDs have more than 1024 cylinders without LBA support (in some cases, you may not want the LBA mode). The system board provides another alternative to support these kinds of HDD.

  • Page 48: Save And Exit Setup

    Energy Star Compliant System Board Note: To support LBA or Large mode HDDs, there must be some software involved. All of this software is included in the Award HDD Service Routine (INT13h). It may fail to access a HDD with LBA or Large mode selected if you are running under an operating system which replaces the entire INT13h.
  • Page 49 G486-EVB Type “Y” and press <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.

  • Page 50: Troubleshooting

    Energy Star Compliant System Board v Troubleshooting If you experience difficulty with the G486-EVB system board, please refer to the checklist below. If you still cannot isolate the problem, please contact your dealer. 1. Check the jumper settings to ensure that the jumpers are properly set.

  • Page 51: Appendix A: Types Of Modules

    G486-EVB v Appendix A: Types of Modules The G486-EVB system board allows you to populate memory with 256K x 36, 1M x 36, and 4M x 36 HSIM modules. The following modules have been tested with this board. Most untested brands will work but a few may fail to do so.

  • Page 52: Appendix B: System Error Report

    Energy Star Compliant System Board v Appendix B: System Error Report When the BIOS encounters an error that requires the user to correct something, either a beep code will sound or a message will be displayed in a box in the middle of the screen and a message PRESS F1 TO CONTINUE, CTRL-ALT-ESC or DEL TO ENTER SETUP will be shown in the information box at the bottom.
  • Page 53 G486-EVB DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER No boot device was found. Insert a system disk into Drive A and press <Enter>. If you assumed the system would boot from the hard drive, make sure the control- ler is inserted correctly and all cables are properly attached.
  • Page 54 Energy Star Compliant System Board ERROR INITIALIZING HARD DISK CONTROLLER Cannot initialize controller. Make sure the cord is correctly 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.
  • Page 55 G486-EVB MEMORY SIZE HAS CHANGED SINCE LAST BOOT Memory has been added or removed since the last boot. Enter Setup and enter the new memory size in the memory fields. MEMORY VERIFY ERROR AT... Indicates an error verifying a value already written to memory.
  • Page 56 Energy Star Compliant System Board RAM PARITY ERROR - CHECKING FOR SEGMENT Indicates a parity error in Random Access Memory. SYSTEM HALTED, (CTRL-ALT-DEL) TO REBOOT... Indicates the present boot attempt has been aborted and the system must be rebooted. Press and hold down the CTRL and ALT keys and press DEL.

  • Page 57: Appendix C: Memory And I/O Maps

    G486-EVB v 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 192K I/O...
  • Page 58 Energy Star Compliant System Board I/O Address Map I/O Address Function 000-01F DMA Controller 1, 8237A-5 020-03F Interrupt Controller 1, 8259A, Master 040-05F Timer, 8254-2 060-06F 8742 (Keyboard Controller) 070-07F Real-time Clock, NMI (Non-maskable Interrupt) Mask 080-09F DMA Page Memory, 74LS612 0A0-08F Interrupt Controller 2, 8259A 0C0-0DF...

  • Page 59: Appendix D: 16-Bit Isa I/O Pin Assignments

    G486-EVB v Appendix D: 16-Bit ISA I/O Pin Assignments -I/O Chck - 01 - Reset Drv - 02 - +5V DC - 03 - IRQ9 - 04 - -5V DC - 05 - DRQ2 - 06 - -12V DC - 07 -...

  • Page 60: Appendix E: Vl-Bus I/O Pin Assignments

    Energy Star Compliant System Board v Appendix E: VL-Bus I/O Pin Assignments Component Side Solder Side DAT00 - 01 - DAT01 DAT02 - 02 - DAT03 DAT04 - 03 - DAT06 - 04 - DAT05 DAT08 - 05 - DAT07 - 06 - DAT09 DAT10...
  • Page 61 G486-EVB Pin Name ADR<31..2> ADS# BE<3..0> BLAST# BRDY# D/C# DAT<31..0> ID<4..0> IRQ9 LBS16# LCLK LDEV<x># LEADS# LGNT<x># LKEN# LRDY# LREQ<x># M/IO# RDYRTN# RESET# W/R# WBACK# (power) (ground) (reserved) Total per slot Direction of signals for the LBC if the host CPU or a system I/O bus master is active.

  • Page 62: Appendix F: Connector Pin Assignments

    Energy Star Compliant System Board v Appendix F: Connector Pin Assignments Connector JP14 External Battery Connector Function Voltage Reserved Ground Ground Connector JP40 Power LED/Keylock Connector Function LED Signal Reserved Ground Keylock Signal Ground F-1 u Appendix F...
  • Page 63 G486-EVB Connector JP41 Speaker Connector Function Signal Connector to Buzzer Ground Connector D6 Standby Mode LED Function Ground Signal Jumper JP44 Standby Mode Switch Connector Function Ground Signal Appendix F u F-2...
  • Page 64 Energy Star Compliant System Board Connector JP45 Reset Switch Connector Function Reset Ground F-3 u Appendix F...

  • Page 65: Appendix G: Award Bios Hard Disk Table

    G486-EVB v Appendix G: Award BIOS Hard Disk Table Example Type Size Cylinders Heads Sectors Write Land (MB) Precomp Zone Model TEAC SD510, MMI 112, 5412 Seagate ST225, ST4026 None Seagate ST125, Tandon TM262 None Tandon TM 703 None None...
  • Page 66 Example Type Size Cylinders Heads Sectors Write Land (MB) Precomp Zone Model 1024 None 1023 Maxtor 1085, Micropolis 1325 None 1023 Maxtor 1105 1120, 4780 None 1023 Maxtor 1170 1024 None CDC 9415 1024 None 1023 1024 None 1023 1024 None 1023 1024...
  • Page 67 G486-EVB Rev. A System Board User’ s Manual - 24341209 -...

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