IBM NetVista Technical Information Manual

Also see for A20 6269: User guide Guía del usuario Guide d'utilisation Manual do utilizador Guida per l'utente

Contents

© Copyright IBM Corp. 2000 viiPrefaceThisTechnical Information Manual provides information for the IBM® NetVista™computer. The manual is intended for developers who want to provide hardware andsoftware products to operate with this IBM computer. It provides an in-depth view ofhow this IBM computer works. Users of this publication should have anunderstanding of computer architecture and programming concepts.Related publicationsIn addition to this manual, the following IBM publications provide information relatedto the operation of the IBM NetVista computer:•NetVista User GuideThis publication, available on the hard disk and on theSoftware Selections CD ifyour computer came with preinstalled software, contains information about settingup your computer, configuring hardware and software, operating and maintainingyour computer, and installing options. Also included are instructions fordiagnosing and solving problems and information on how to obtain help andservice.•Quick ReferenceThis publication contains general information to help you to safely set up yourcomputer and access important online publications.•Understanding Your Personal ComputerThis online document includes general information about using computers andinformation about the features of the NetVista computer. It is available athttp://www.ibm.com/pc/support on the World Wide Web.•Hardware Maintenance ManualThis publication contains information for trained service technicians. It isavailable at http://www.ibm.com/pc/support on the World Wide Web, and it canalso be ordered from IBM. To purchase a copy, see the "Getting help, service,and information" section in theNetVista User Guide.Terminology usageAttention: The termreserved describes certain signals, bits, and registers thatshould not be changed. Use of reserved areas can cause compatibility problems,loss of data, or permanent damage to the hardware. When the contents of a registerare changed, the state of the reserved bits must be preserved. When possible, readthe register first and change only the bits that must be changed.In this manual, some signals are represented in an all-capital-letter format (−ACK). Aminus sign in front of the signal indicates that the signal is active low. No sign in frontof the signal indicates that the signal is active high.The use of the term hex indicates a hexadecimal number.When numerical modifiers such as K, M, and G are used, they typically indicatepowers of 2, not powers of 10. For example, 1 KB equals 1 024 bytes (210), and 1 GBequals 1 073 741 824 bytes (230). However, when expressing storage capacity,powers of 10 are used. 1 MB equals approximately 1 000 KB (1 000 000 bytes).Note: Depending on the operating system and other system requirements, thestorage capacity available to the user might vary.