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PREFACE
Thank you for purchasing the 486SH 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.
486SH System Board User's Manual
Page 1
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Table of Contents
Related Manuals for Air 486SH
Summary of Contents for Air 486SH
- Page 1 PREFACE Thank you for purchasing the 486SH 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.
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Page 2: Table Of Contents
WRITE TO CMOS AND EXIT DO NOT WRITE TO CMOS AND EXIT CHAPTER 5: KEYBOARD HOT KEYS SYSTEM SPEED SYSTEM SECURITY LOCKING SYSTEM POWER DOWN MODE PASSWORD STATE APPENDIX A: AMI BIOS HARD DISK TYPE Page 2 486SH System Board User's Manual... - Page 3 APPENDIX B: MEMORY MAPPING APPENDIX C: AT I/O ADDRESS MAP APPENDIX D: INTERRUPT ASSIGNMENTS APPENDIX E: ENVIRONMENTAL SPECIFICATION 486SH System Board User's Manual Page 3...
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Page 4: Chapter 1: Introduction
CHAPTER 1: INTRODUCTION The 486SH 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 486SH dramatically boosts system throughput for even the most demanding applications. - Page 5 486SH System Board User's Manual Page 5...
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Page 6: Chapter 2: Jumpers & Connectors
Figures 1 on the next page shows the component layout of the 486SH 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 486SH System Board User's Manual Page 7...
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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 486SH 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. 486SH System Board User's Manual Page 9... -
Page 10: Display Type Jumper
JP13 Enable Green clock-slow-down SHORT control. During specified idle period, CPU (Default) clock is slowed down to 8-MHz to conserve power. Disable Green clock-slow-down OPEN control. CPU is always running at full speed. Page 10 486SH System Board User's Manual... -
Page 11: System Board Connectors
SYSTEM BOARD CONNECTORS Following is the list of 486SH system board connectors required to be installed for proper system operation. - Power supply connectors (CN1, CN2) - External battery connector (J1) - Keyboard connector (KB1) - Power LED and keyboard lock connector (KEYLOCK) - Page 12 AT- compatible keyboard (84 or 101 -key type keyboards). The pin assignment is shown below: Description Keyboard Clock Signal Keyboard Data Signal Not Used Ground +5V Fused VDC Page 12 486SH System Board User's Manual...
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Page 13: Speaker Connector
The Speaker connector (SPEAKER) is a 4-pin keyed BERG strip. It is used to connect an external 2-inch, 8-ohm speaker to the system board to provide sound capability. The pin assignments are defined below: Description Speaker Data Out Key (No Connection) Ground +5 VDC 486SH System Board User's Manual Page 13... -
Page 14: Reset Connector
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 Page 14 486SH System Board User's Manual... -
Page 15: Green Pc Connectors
Green PC device. When signal on this goes low, external Green device connected to this pin should go into power saving state. This pin must be programmed through BIOS Power Management Setup. 486SH System Board User's Manual Page 15... -
Page 16: Chapter 3: Installation
(SIMM) added to these banks must be installed a full bank at a time. Start with bank 0, then work your way up. DRAM speed must be 80ns, 70ns, or 60ns. You can configure the memory of the 486SH in a variety of ways. The chart below shows the possible combinations. - Page 17 2. Insert the SIMM at a 45 degree angle, tilted away from the 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. 486SH System Board User's Manual Page 17...
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Page 18: Installing A Vl-Bus Card
7. Holding the card at the center of the top edge, gently push straight down with equal pressure at both ends. 8. Replace the screw to hold the card into place. 9. Replace and secure the system cover. 10.Reconnect all the wires and cables. EQUIPMENT REQUIRED Page 18 486SH System Board User's Manual... - Page 19 The dimension of the 486SH system board is designed to fit perfectly in a PC/XT (or PC/AT) standard case. To build a complete high performance system based on the 486SH system board, the following equipment are needed: A chassis with dimension similar to PC/XT/AT standard chassis.
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Page 20: Chapter 4: Bios Setup
1. Reset the system by turning it OFF then ON or pushing the "RESET" button on the system front panel. 2. Hit the <Del> key momentarily as soon as the following message appears: "Hit <DEL>, if you want to run SETUP" Page 20 486SH System Board User's Manual... - Page 21 TO CMOS AND EXIT" ignores your changes and exits the BIOS SETUP program. In each setup screen, the following common keyboard controls may be used: <F1> : Help <F2>, <F3> : Color (to change screen color) <F5> : Old Setup Values 486SH System Board User's Manual Page 21...
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Page 22: Standard Cmos Setup
Floppy Drive B: Type: Specify the type of the second floppy drive installed on the system. · Primary Display Monitor (Color 40x25, Color 80x25, VGA/PGA/EGA, Monochrome): The 'Not Installed' option could be used for network file servers. Page 22 486SH System Board User's Manual... -
Page 23: Advanced Cmos Setup
DOS 1KB in the top 1KB of the 640KB DOS base memory · System Boot Up NumLock: When the computer boots, it selects the numeric values rather than the cursor control functions on the numeric keypad of IBM compatible keyboards. Most extended 486SH System Board User's Manual Page 23... - Page 24 ROMs use. · Boot Sector Virus Protection: Select 'Enabled' to protect the Boot sector of your hard disk from software virus such as "Michael Angelo". Page 24 486SH System Board User's Manual...
- Page 25 486SH System Board User's Manual Page 25...
- Page 26 Speed Write 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 26 486SH System Board User's Manual...
- Page 27 1/5 CLK = 10MHz or 1/6 CLK = 8.33MHz. Latch Local Bus Device, Local Bus Ready: Follow below · table to set these options. CPU Clock Latch Local Bus Speed Local Bus Ready Device 20MHz TRANS 486SH System Board User's Manual Page 27...
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Page 28: Power Management Setup
BIOS with user-defined time-out values from 1 to 255 minutes. The I/ O pins that are associated with each timer are hardware design-specific and are defined as connectors JP8 and JP50 on the 486SH motherboard. Please refer to Chapter 2 for detailed description of these connectors. -
Page 29: Auto Detect Hard Disk
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. AUTO DETECT HARD DISK 486SH System Board User's Manual Page 29... - Page 30 It is not guaranteed than this utility will work with all IDE hard disk. There is no need to use this utility if you already have hard disk type information. Page 30 486SH System Board User's Manual...
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Page 31: Hard Disk Utility
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. 486SH System Board User's Manual Page 31... -
Page 32: Chapter 5: Keyboard Hot Keys
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. Page 32 486SH System Board User's Manual... -
Page 33: Password State
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. 486SH System Board User's Manual Page 33... -
Page 34: Appendix A: Ami Bios Hard Disk Type
68MB 53MB 1024 65535 1024 94MB 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 Page 34 486SH System Board User's Manual... - Page 35 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 486SH System Board User's Manual Page 35...
- Page 36 Enhanced Graphics Adapter 3D0 - 3DF Color/Graphics Monitor Adapter 3F0 - 3F7 Diskette Drive Controller 3F8 - 3FF Serial Port 1 (RS-232-C) 6E2 - 6E3 Data Acquisition Adapter 1 790 - 793 Cluster Adapter 1 Page 36 486SH System Board User's Manual...
- Page 37 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 486SH System Board User's Manual Page 37...
- Page 38 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 Page 38 486SH System Board User's Manual...
- Page 39 50 o to 104 o Fahrenheit (10 o to 40 o Celsius) Non-Operating: -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% 486SH System Board User's Manual Page 39...
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