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Air 486MI Manual

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PREFACE
Thank you for purchasing the 486MI system board. This document gives
an aid to the configuration and installation of this system board.
The information in this document is subject to change without notice.
This document contains information protected by copyright. All rights are
reserved. No part of this document may be used or reproduced in any
forms or by any means, or stored in a database or retrieval system,
without prior written permission.
TRADEMARKS
Intel is a registered trademark of Intel Corporation.
IBM is a registered trademark of International Business Machines
Corporation.
Microsoft is a registered trademark of Microsoft Corporation.
VESA is a registered trademark of Video Electronics Standard
Association.
All other trademarks used in this manual are the property of their
respective owners.
486MI System Board User's Manual
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  • Page 1 PREFACE Thank you for purchasing the 486MI system board. This document gives an aid to the configuration and installation of this system board. The information in this document is subject to change without notice. This document contains information protected by copyright. All rights are reserved.

  • Page 2: Table Of Contents

    AUTO CONFIGURATION - BIOS DEFAULTS AUTO CONFIGURATION - POWER-ON DEFAULTS CHANGE PASSWORD AUTO DETECT HARD DISK HARD DISK UTILITY WRITE TO CMOS AND EXIT DO NOT WRITE TO CMOS AND EXIT CHAPTER 5: VL-BUS IDE DRIVERS Page 2 486MI System Board User's Manual...
  • Page 3 SYSTEM SECURITY LOCKING SYSTEM POWER DOWN MODE PASSWORD STATE APPENDIX A: AMI BIOS HARD DISK TYPE APPENDIX B: MEMORY MAPPING APPENDIX C: AT I/O ADDRESS MAP APPENDIX D: INTERRUPT ASSIGNMENTS APPENDIX E: SPECIFICATION 486MI System Board User's Manual Page 3...

  • Page 4: Chapter 1: Introduction

    CHAPTER 1: INTRODUCTION The 486MI system board adds to our 486 product line high integration and cost effective solution without compromising performance and quality. With top speed at 50MHz and integrated 64K/128K/256K Write- Back cache, the 486MI dramatically boosts system throughput for even the most demanding applications.
  • Page 5 Floppy Disk Controller can be disabled. Peripherals: · Supports two Serial ports, one Parallel port and one Game port. Green PC: · CPU clock-slow-down and monitor shut-down features. On-Board Battery: · 3.6V/60mA on-board battery. 486MI System Board User's Manual Page 5...

  • Page 6: Chapter 2: Jumpers & Connectors

    Figures 1 on the next page shows the component layout of the 486MI system board with locations of the system board jumpers and connectors. Note that most jumpers and connectors on the system board are labeled with proper names with pin 1 marked as '1'.
  • Page 7 FIGURE 486MI System Board User's Manual Page 7...

  • Page 8: Cpu Type Jumpers

    (PGA) socket on the system board. Make certain that pin 1 of the CPU chip is correctly aligned with pin 1 of CPU socket. The location of pin 1 on the CPU is denoted by a small notch. Page 8 486MI System Board User's Manual...

  • Page 9: Cache Size Jumpers

    System board runs one wait state write transfer. All VL-Bus adapters can operate (Default) in this mode. System board runs zero wait state write transfer. Some VL-Bus adapters may not be able to run this mode. 486MI System Board User's Manual Page 9...

  • Page 10: Display Type Jumper

    4. Replace and secure the system cover. 5. Turn power ON, CMOS data should be cleared. Display Type Jumper Display Type JP16 Video display VGA, EGA, OPEN Monochrome. (Default) Video display is CGA. SHORT Page 10 486MI System Board User's Manual...
  • Page 11 6. After programming is complete, turn power OFF and change jumper JP17 back to 1-2 position. 7. Turn power ON again. BIOS message with new revision number will appear on screen. 8. Re-enable External Cache through BIOS Setup. 486MI System Board User's Manual Page 11...

  • Page 12: Ide Port Jumpers

    2 - 3 1 - 2 2 - 3 9T, High Speed Parallel Port Jumper Parallel Port JP30 Select interrupt line IRQ7 for Parallel port. (Default) Select interrupt line IRQ5 for Parallel port. Page 12 486MI System Board User's Manual...

  • Page 13: System Board Connectors

    System power down can be invoked by shorting pin 1 to pin 2 of jumper "GREEN" located near CPU. Make sure the BIOS Power Management Setup options are enabled. Connect a 2-position switch from the front panel to this jumper for manual control. 486MI System Board User's Manual Page 13...
  • Page 14 Connector PS2 Connector PS1 Power Good Ground +5 VDC Ground +12 VDC -5 VDC -12 VDC +5 VDC Ground +5 VDC Ground +5 VDC Page 14 486MI System Board User's Manual...
  • Page 15 This allows you to switch off the keyboard and so provide limited security against casual intruders. The pin assignments are indicated below: Description LED Power Key (No Connection) Ground Keyboard Lock Ground 486MI System Board User's Manual Page 15...

  • Page 16: Speaker Connector

    System reset can be done by shorting pin 1 to pin 2 with the same effect as turning the power off and then on again. Description Reset Input Ground Page 16 486MI System Board User's Manual...
  • Page 17 The Turbo LED connector, marked as 'TB/LED', is a 2-pin BERG strip. It is used to connect a CPU operating frequency indicator LED from the front panel to the system board. The pin assignments are indicated below: Description LED Cathode LED Anode 486MI System Board User's Manual Page 17...
  • Page 18 Description Carrier Detect (RLSD) Receive Data (RXD) Transmit Data (TXD) Data Terminal Ready (DTR) Signal Ground Data Set Ready (DSR) Request To Send (RTS) Clear To Send (CTS) Ring Indicator (RI) No Connection Page 18 486MI System Board User's Manual...
  • Page 19 Drive 2 Ground Drive 1 Ground Motor 2 Ground Direction Ground Step Ground Write Data Ground Write Enable Ground Track0 Ground Write Protect Ground Read Data Ground Head Select Ground Disk Change Ground 486MI System Board User's Manual Page 19...
  • Page 20 Harddisk Activity LED Connector The hard disk activity LED connector (HDLED) is a 2-pin keyed BERG strip. It is used to connect to front panel hard disk LED. Description LED Anode (+) LED Cathode (-) Page 20 486MI System Board User's Manual...

  • Page 21: Chapter 3: Hardware Installation

    512Kx36, 1Mx36, 2Mx36, 4Mx36, and 8Mx36 DRAM SIMMs. These banks are labeled SIM1, SIM2, SIM3, and SIM4. DRAM speed must be 70ns or 60ns. You can configure the memory of the 486MI in a variety of ways. The chart below shows the possible combinations.

  • Page 22: Installing A Vl-Bus Card

    2. Insert the SIMM at a 45 degree angle, tilted towards ISA slots. 3. Gently push the SIMM to an upright position until it "snaps" into place. 4. Repeat above steps until the entire bank is filled. INSTALLING A VL-BUS CARD Page 22 486MI System Board User's Manual...

  • Page 23: Equipment Required

    9. Replace and secure the system cover. 10.Reconnect all the wires and cables. EQUIPMENT REQUIRED The dimension of the 486MI system board is designed to fit perfectly in a PC/XT (or PC/AT) standard case. To build a complete high performance 486MI System Board User's Manual...
  • Page 24 486MI system board, the following equipment are needed: A chassis with dimension similar to PC/XT/AT standard chassis. A standard AT 220W power supply which is capable to provide a continuous power within a +4.85 VDC to +5.25 VDC range. A power line filter may be needed for areas with noisy transmission.

  • Page 25: Chapter 4: Bios Setup

    2. Hit the <Del> key momentarily as soon as the following message appears: "Hit <DEL>, if you want to run SETUP" 3. After you press the <Del> key, the following BIOS Setup screen appears: 486MI System Board User's Manual Page 25...

  • Page 26: Standard Cmos Setup

    : BIOS Setup Default Values <F7> : Power On Default Values <ESC> : Exit Setup Section Arrow Keys : Select Setup Item <PG UP/ PG DN> : Modify the Setup Item STANDARD CMOS SETUP Page 26 486MI System Board User's Manual...

  • Page 27: Advanced Cmos Setup

    Installed" allows your system to operate without keyboard. After all selections have been done, press <Esc> key to exit this section. ADVANCED CMOS SETUP "ADVANCED CMOS SETUP" lists some system features that allows you to fine tune your system setup. 486MI System Board User's Manual Page 27...
  • Page 28 Floppy Drive Seek At Boot: Default is "Disabled". On this setting the system will check the hard disk first to find the disk operating system. This option also allows the user to run the system without a floppy disk drive. Page 28 486MI System Board User's Manual...
  • Page 29 ROMs use. · Boot Sector Virus Protection: Select 'Enabled' to protect the Boot sector of your hard disk from software virus such as "Michael Angelo". 486MI System Board User's Manual Page 29...
  • Page 30 Write CAS Write Cycle Pulse 20MHz or 25MHz Fastest 0 W/S 33MHz Slower 1 W/S 40MHz Slower 1 W/S 50MHz Slowest 1 W/S · DRAM Hidden Refresh: Select "Enabled" to maximize system performance. Page 30 486MI System Board User's Manual...

  • Page 31: Power Management Setup

    Latch Local Bus Device, Local Bus Ready: Follow below table to set these options. CPU Clock Speed Latch Local Local Bus Bus Device Ready 20MHz TRANS 25MHz TRANS 33MHz SYNC 40MHz SYNC 50MHz 2T or 3T SYNC POWER MANAGEMENT SETUP 486MI System Board User's Manual Page 31...

  • Page 32: Auto Configuration - Bios Defaults

    AUTO CONFIGURATION WITH POWER-ON DEFAULTS Use this option to load the settings detected by the system when you turn it on. It your system behaves erratically you can use this feature to check for incorrect settings. Page 32 486MI System Board User's Manual...

  • Page 33: Change Password

    If the password is miskeyed, the following error message appears: ERROR, Press Any Key... If the password is keyed in correctly the following confirmation message appears: NEW Password Installed 7. Press <Esc> to exit to the Main Menu. 486MI System Board User's Manual Page 33...

  • Page 34: Auto Detect Hard Disk

    After you have/have not made any changes during setup and decided not to store those information into non-volatile CMOS memory, use this option to exit Setup. The system should reboot with the current configuration stored in CMOS memory. CHAPTER 5: VL-BUS IDE DRIVERS Page 34 486MI System Board User's Manual...
  • Page 35 Make sure the 32BitDiskAccess is set to "ON". 3. Add the following command line into the [386Enh] section: device=[drive:] [\path\] IDEDRV.386 where the [drive:] and [\path\] point to the directory that contains the file IDEDRV.386, for example: device=c:\windows\system\idedrv.386 486MI System Board User's Manual Page 35...
  • Page 36 4. Delete the command line "device=*wdctrl" from the [386Enh] section if it exists. 5. Restart Windows by typing WIN. Page 36 486MI System Board User's Manual...
  • Page 37 Pressing <Ctrl> <Alt> <\> key sequence puts the system into immediate power down mode. This hot key sequence is active if the Green PC system power saving mode is enabled in BIOS Setup. PASSWORD STATE 486MI System Board User's Manual Page 37...
  • Page 38 The Green PC power savings Press any key for full power feature is enabled through BIOS operation. Setup, Password is disabled and the <Ctrl> <Alt> <\> key sequence is pressed. Page 38 486MI System Board User's Manual...
  • Page 39 1024 65535 1024 128MB 1024 1024 1024 43MB 10MB 1024 65535 1024 77MB 1024 1024 68MB 41MB 25MB 57MB 41MB 41MB 41MB 48MB 65535 69MB 65535 114MB 1224 65535 1223 152MB USER'S TYPE 486MI System Board User's Manual Page 39...
  • Page 40 I/O board is used in this range 01000000- System Memory Cached BFFFFFFF (RAM) C0000000- System Memory Cached C1FFFFFF (RAM) C2000000- System Memory Cached FFFDFFFF FFFE0000- 128K On-Board Not cached FFFFFFFF BIOS ROM Page 40 486MI System Board User's Manual...
  • Page 41 3F0 - 3F7 Diskette Drive Controller 3F8 - 3FF Serial Port 1 (RS-232-C) 6E2 - 6E3 Data Acquisition Adapter 1 790 - 793 Cluster Adapter 1 AE2 - AE3 Data Acquisition Adapter 2 486MI System Board User's Manual Page 41...
  • Page 42 EE2 - EE3 Data Acquisition Adapter 3 1390 - 1393 Cluster Adapter 3 22E1 GPIB Adapter 1 2390 - 2393 Cluster Adapter 4 42E1 GPIB Adapter 2 62E1 GPIB Adapter 3 82E1 GPIB Adapter 4 Page 42 486MI System Board User's Manual...
  • Page 43 Parallel Port 1 IRQ8 Real Time Clock IRQ9 Expansion Bus Pin IRQ10 Expansion Bus Pin IRQ11 Expansion Bus Pin IRQ12 Expansion Bus Pin IRQ13 Coprocessor Error IRQ14 Fixed Disk Drive Controller IRQ15 Expansion Bus Pin 486MI System Board User's Manual Page 43...
  • Page 44 Non-Operating: 50 o to 104 o Fahrenheit (10 o to 40 o Celsius) -22 o to 140 o Fahrenheit (-30 o to 60 o Celsius) Shipping: RELATIVE HUMIDITY (NON-CONDENSING) Operating: 20% to 80% Non-Operating: 5% to 90% Page 44 486MI System Board User's Manual...

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