American Megatrends Atlas PCI-II User manual

Atlantis Pentium II
PCI ISA Motherboard
Guide
MAN-773
11/20/97

Atlantis PCI Pentium II ISA Motherboard User’s Guide
ii
© Copyright 1997 American Megatrends, Inc.
All rights reserved.
American Megatrends, Inc.
6145F Northbelt Parkway
Norcross, GA 30071
This publication contains proprietary information which is protected by copyright. No part of this publication may be reproduced, transcribed,
stored in a retrieval system, translated into any language or computer language, or transmitted in any form whatsoever without the prior written
consent of the publisher, American Megatrends, Inc.
Limited Warranty
Buyer agrees if this product proves to be defective, that American Megatrends, Inc. is only obligated to replace or refund the purchase price of
this product at American Megatrends’ discretion according to the terms and conditions on the motherboard warranty card. American Megatrends
shall not be liable in tort or contract for any loss or damage, direct, incidental or consequential. Please see the Warranty Registration Card
shipped with this product for full warranty details.
Limitations of Liability
In no event shall American Megatrends be held liable for any loss, expenses, or damages of any kind whatsoever, whether direct, indirect,
incidental, or consequential, arising from the design or use of this product or the support materials provided with the product.
Trademarks
Intel and Pentium II are registered trademarks of Intel Corporation.
MS-DOS, Microsoft Word, and Microsoft are registered trademarks of Microsoft Corporation.
SMC is a registered trademark of Standard Microsystems Corporation.
IBM, AT, VGA, PS/2, OS/2, and EGA are registered trademarks of International Business Machines Corporation. XT and CGA are trademarks
of International Business Machines Corporation.
Fujitsu is a registered trademark of Fujitsu America, Inc.
Motorola is a registered trademark of Motorola Corporation.
Hitachi is a registered trademark of Hitachi America, Ltd.
PNY is a registered trademark of PNY Corporation.
Oki is a registered trademark of Oki America, Inc.
NEC is a registered trademark of NEC Corporation.
Samsung is a registered trademark of Samsung Electronics Corporation.
Siemens is a trademark of Siemens Corporation.
Mitsubishi is a registered trademark of Mitsubishi Electronics of America.
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SCO, UnixWare, and Unix are registered trademarks of The Santa Cruz Operation, Inc.
Toshiba is a registered trademark of Kabushiki Kaisha Toshiba.
VESA is a trademark of the Video Electronics Standards Association.
All other brand and product names are trademarks or registered trademarks of their respective companies.
Revision History
11/20/97 Initial release.

Preface iii
Preface
To the OEM Thank you for purchasing the high performance American Megatrends
Atlantis PCI Pentium II ISA motherboard. This product is a state of the art
motherboard that includes the famous AMIBIOS. It is assumed that you have
also licensed the rights to use the American Megatrends documentation for
the American Megatrends Atlantis motherboard
This manual was written for the OEM to assist in the proper installation and
operation of this motherboard. This manual describes the specifications and
features of the Atlantis motherboard. It explains how to assemble a system
based on the Atlantis motherboard and how to use the AMIBIOS that is
specifically designed for this motherboard.
This manual is not meant to be read by the computer owner who purchases a
computer with this motherboard. It is assumed that you, the computer
manufacturer, will use this manual as a sourcebook of information, and that
parts of this manual will be included in the computer owner's manual.
Technical Support
If you need help installing, configuring, or running this product, call
American Megatrends technical support at 770-246-8645. You can also send
questions to tech support at:
[email protected].
American Megatrends BBS The American Megatrends BBS permits you to access technical
information about American Megatrends motherboard, peripheral, and BIOS
products. Product Engineering Change Notices, Tech Tips, and technical
documentation are available on the BBS. Some parts of the BBS are not
accessible to all callers. Call American Megatrends Technical Support at 770-
246-8645 to find out how to access the BBS.
Phone Numbers The BBS requires no parity, eight data bits, and one stop bit. The
characteristics of the BBS phone numbers are:
Phone Number Characteristics
770-246-8780 28,800 baud rate. Supports v.34.
770-246-8781 28,800 baud rate. Supports v.34.
770-246-8782 Supports HST and v.42.
770-246-8783 Supports HST and v.42.
Web Site We invite you to access the American Megatrends world wide web site at:
http://www.ami.com.

Atlantis PCI Pentium II ISA Motherboard User’s Guide
iv
Packing List
You should have received the following:
• an Atlantis Pentium II PCI ISA motherboard,
• a diskette containing the American Megatrends Client Care utility,
• the American Megatrends Client Care User’s Guide,
• a Warranty Card, and
• the American Megatrends Atlantis Pentium II PCI ISA Motherboard User's
Guide.
Warning
The pinout for the optional USB Cable Box is:
Pin 1 Red VCC
Pin 2 Green Data +
Pin 3 White Data -
Pin 4 Black Ground
Please make sure that the USB cable is correctly installed. Incorrect
installation will damage the motherboard.
Static Electricity
The Atlantis motherboard can easily be damaged by static electricity. Make
sure you take appropriate precautions against static electric discharge:
• wear a properly-grounded wristband while handling the motherboard or any other
electrical component,
• touch a grounded anti-static surface or a grounded metal fixture before handling
the Atlantis motherboard,
• handle system components by the mounting bracket, if possible.
Batteries Make sure you dispose of used batteries according to the battery
manufacturer’s instructions. Improper use of batteries may cause an
explosion. Make sure you follow the battery manufacturer’s instructions about
using the battery. Replace used batteries with the same type of battery or an
equivalent recommended by the battery manufacturer.

Chapter 1 Hardware Installation 1
1Hardware Installation
Overview
The American Megatrends Atlantis PCI Pentium II ISA ATX motherboard
supports intelligent diagnostic and power management, hardware monitoring,
DMI reporting and modification, Ultra DMA/33, USB, the ACPI (Advanced
Configuration and Power Interface) specification, and includes an
Accelerated Graphics Port (AGP) socket for a super fast AGP video display
card
CPU The CPU socket on the motherboard is a 242-pin slot. A switching voltage
regulator is required. You can install a 233, 266, 300, or 333 MHz Intel®
Pentium® II CPU in this socket.
MMX Technology This motherboard supports Intel Pentium II CPUs that include MMX
support. MMX technology allows you to experience richer video, audio,
digital imaging and communications when running the latest generation of
multimedia software on your computer.
AGP The Intel Accelerated Graphics Port (AGP) specification provides a new level
of video display sophistication and speed. The Atlantis motherboard includes
an AGP expansion slot for a bus mastering AGP graphics card. AGP video
cards support data transfer rates up to 528 MBs.
Client Care The Atlantis motherboard is shipped with a copy of the American Megatrends
Client Care utility. Client Care allows you to display system information, run
diagnostic test, and monitor environmental parameters such as the CPU
temperature, fan speed, and system voltage levels. Cont’d