DOCSLIB.ORG

MSMP5SEV Low-Power Pentium

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
MSMP5SEV Low-Power Pentium TECHNICAL USER'S MANUAL FOR: PC/104plus smartCore MSMP5SEV Low-Power Pentium #100899-1 Nordstrasse 11/F, CH-4542 Luterbach Tel.: ++41 (0)32 681 53 33 - Fax: ++41 (0)32 681 53 31 DIGITAL-LOGIC AG MSMP5SEV V1.00 COPYRIGHT Ó 1998-99 BY DIGITAL-LOGIC AG No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, in any form or by any means, electronic, mechanical, optical, manual, or otherwise, without the prior written permis- sion of DIGITAL-LOGIC AG. The software described herein, together with this document, are furnished under a license agreement and may be used or copied only in accordance with the terms of that agreement. ATTENTION: All information in this manual and about the product are subject to change without prior notice. REVISION HISTORY: Prod.-Serialnumber: Product BIOS Doc. Date/Vis: Modification: From: To: Version Version Version Remarks, News, Attention: 850xxx10000 850xxx1yyyy V2.0 V1.0 1.0 12.99 FK Initial Version Product Registration: Please register your product at: http://www.digitallogic.ch -> SUPPORT -> Product Registration After registration, you will receive driver & software updates, errata information, customer information and news from DIGITAL-LOGIC AG products automatically. 2 DIGITAL-LOGIC AG MSMP5SEV V1.00 Table of Contents 1 Preface ............................................................................................................................................7 1.1 How to use this Manual ....................................................................................................... 7 1.2 Trademarks............................................................................................................................ 7 1.3 Disclaimer.............................................................................................................................. 7 1.4 Who should use this Product.............................................................................................. 7 1.5 Recycling Information .......................................................................................................... 8 1.6 Technical Support ................................................................................................................ 8 1.7 Limited Warranty................................................................................................................... 8 2 Overview.........................................................................................................................................9 2.1 Standard Features................................................................................................................ 9 2.2 Unique Features ................................................................................................................... 9 2.3 MSMP5SEV Block Diagram ............................................................................................. 10 2.4 MSMP5SEV Specifications.............................................................................................. 11 2.5 Ordering Codes .................................................................................................................. 13 2.6 BIOS History........................................................................................................................ 14 2.7 This product is “YEAR 2000 CAPABLE” .......................................................... 14 2.8 Mechanical Dimensions..................................................................................................... 15 2.9 MSMP5SEV Incompatibilities to a Standard PC/AT .................................................... 16 2.10 Related Application Notes................................................................................................. 16 2.11 Thermoscan......................................................................................................................... 16 2.12 High frequency Radiation (to meet EN55022) ................................................................. 17 3 PC/104 Bus Signals ..................................................................................................................18 3.1 Expansion Bus.................................................................................................................... 21 4 Detailed System Description ..................................................................................................22 4.1 Power Requirements.......................................................................................................... 22 4.2 CPU, Boards and RAMs..................................................................................................... 22 4.2.1 CPUs of this MICROSPACE Product ..................................................................................22 4.2.2 Numeric Coprocessor.........................................................................................................22 4.2.3 DRAM Memory ..................................................................................................................22 4.3 Interface ............................................................................................................................... 23 4.3.1 Keyboard AT compatible and PS/2 Mouse...........................................................................23 4.3.2 Line Printer Port LPT1 ........................................................................................................23 4.3.3 Serial Ports COM1-COM2 ..................................................................................................23 4.3.4 Floppy Disk Interface..........................................................................................................24 4.3.5 Speaker Interface...............................................................................................................25 4.4 Controllers........................................................................................................................... 25 4.4.1 Interrupt Controllers ...........................................................................................................25 4.5 Timers and Counters ......................................................................................................... 25 4.5.1 Programmable Timers ........................................................................................................25 4.5.2 Battery backed clock (RTC) ................................................................................................26 4.5.3 Watchdog..........................................................................................................................26 4.6 BIOS ..................................................................................................................................... 27 4.6.1 ROM-BIOS Sockets...........................................................................................................27 4.6.2 EEPROM Memory for Setup...............................................................................................27 4.6.3 BIOS CMOS Setup ............................................................................................................28 4.6.4 CMOS Setup Harddisk List.................................................................................................28 4.7 CMOS RAM Map ................................................................................................................. 29 4.7.1 Harddisk PIO Modes ..........................................................................................................35 4.8 EEPROM saved CMOS Setup............................................................................................ 36 4.8.1 CORE - BIOS Download Function.......................................................................................36 4.8.2 VGA BIOS Download Function ...........................................................................................37 4.9 Information about Advanced Setup ................................................................................. 38 3 DIGITAL-LOGIC AG MSMP5SEV V1.00 4.9.1 Standard Setup Options .....................................................................................................38 4.10 Memory................................................................................................................................. 38 4.10.1 System Memory Map .........................................................................................................38 4.10.2 System I/O map.................................................................................................................39 4.11 BIOS Data Area Definitions ............................................................................................... 54 4.12 VGA, LCD............................................................................................................................. 61 4.12.1 VGA / LCD Controller 69000...............................................................................................61 4.12.2 VGA / LCD BIOS for 69000...............................................................................................61 4.12.3 Display Modes Supported...................................................................................................62 4.12.4 VGA/LCD BIOS Support.....................................................................................................63 4.12.5 Memory 65554/65555/69000
Load more

Recommended publications
  • Beyond MOV ADD XOR – the Unusual and Unexpected
    Beyond MOV ADD XOR the unusual and unexpected in x86 Mateusz "j00ru" Jurczyk, Gynvael Coldwind CONFidence 2013, Kraków Who • Mateusz Jurczyk o Information Security Engineer @ Google o http://j00ru.vexillium.org/ o @j00ru • Gynvael Coldwind o Information Security Engineer @ Google o http://gynvael.coldwind.pl/ o @gynvael Agenda • Getting you up to speed with new x86 research. • Highlighting interesting facts and tricks. • Both x86 and x86-64 discussed. Security relevance • Local vulnerabilities in CPU ↔ OS integration. • Subtle CPU-specific information disclosure. • Exploit mitigations on CPU level. • Loosely related considerations and quirks. x86 - introduction not required • Intel first ships 8086 in 1978 o 16-bit extension of the 8-bit 8085. • Only 80386 and later are used today. o first shipped in 1985 o fully 32-bit architecture o designed with security in mind . code and i/o privilege levels . memory protection . segmentation x86 - produced by... Intel, AMD, VIA - yeah, we all know these. • Chips and Technologies - left market after failed 386 compatible chip failed to boot the Windows operating system. • NEC - sold early Intel architecture compatibles such as NEC V20 and NEC V30; product line transitioned to NEC internal architecture http://www.cpu-collection.de/ x86 - other manufacturers Eastern Bloc KM1810BM86 (USSR) http://www.cpu-collection.de/ x86 - other manufacturers Transmeta, Rise Technology, IDT, National Semiconductor, Cyrix, NexGen, Chips and Technologies, IBM, UMC, DM&P Electronics, ZF Micro, Zet IA-32, RDC Semiconductors, Nvidia, ALi, SiS, GlobalFoundries, TSMC, Fujitsu, SGS-Thomson, Texas Instruments, ... (via Wikipedia) At first, a simple architecture... At first, a simple architecture... x86 bursted with new functions • No eXecute bit (W^X, DEP) o completely redefined exploit development, together with ASLR • Supervisor Mode Execution Prevention • RDRAND instruction o cryptographically secure prng • Related: TPM, VT-d, IOMMU Overall..
    [Show full text]
  • Computing :: Operatingsystems :: DOS Beyond 640K 2Nd
    DOS® Beyond 640K 2nd Edition DOS® Beyond 640K 2nd Edition James S. Forney Windcrest®/McGraw-Hill SECOND EDITION FIRST PRINTING © 1992 by James S. Forney. First Edition © 1989 by James S. Forney. Published by Windcrest Books, an imprint of TAB Books. TAB Books is a division of McGraw-Hill, Inc. The name "Windcrest" is a registered trademark of TAB Books. Printed in the United States of America. All rights reserved. The publisher takes no responsibility for the use of any of the materials or methods described in this book, nor for the products thereof. Library of Congress Cataloging-in-Publication Data Forney, James. DOS beyond 640K / by James S. Forney. - 2nd ed. p. cm. Rev. ed. of: MS-DOS beyond 640K. Includes index. ISBN 0-8306-9717-9 ISBN 0-8306-3744-3 (pbk.) 1. Operating systems (Computers) 2. MS-DOS (Computer file) 3. PC -DOS (Computer file) 4. Random access memory. I. Forney, James. MS-DOS beyond 640K. II. Title. QA76.76.063F644 1991 0058.4'3--dc20 91-24629 CIP TAB Books offers software for sale. For information and a catalog, please contact TAB Software Department, Blue Ridge Summit, PA 17294-0850. Acquisitions Editor: Stephen Moore Production: Katherine G. Brown Book Design: Jaclyn J. Boone Cover: Sandra Blair Design, Harrisburg, PA WTl To Sheila Contents Preface Xlll Acknowledgments xv Introduction xvii Chapter 1. The unexpanded system 1 Physical limits of the system 2 The physical machine 5 Life beyond 640K 7 The operating system 10 Evolution: a two-way street 12 What else is in there? 13 Out of hiding 13 Chapter 2.
    [Show full text]
  • NASM — the Netwide Assembler Version 2.09.04
    NASM — The Netwide Assembler version 2.09.04 -~~..~:#;L .-:#;L,.- .~:#:;.T -~~.~:;. .~:;. E8+U *T +U' *T# .97 *L E8+' *;T' *;, D97 `*L .97 '*L "T;E+:, D9 *L *L H7 I# T7 I# "*:. H7 I# I# U: :8 *#+ , :8 T, 79 U: :8 :8 ,#B. .IE, "T;E* .IE, J *+;#:T*" ,#B. .IE, .IE, © 1996−2010 The NASM Development Team — All Rights Reserved This document is redistributable under the license given in the file "LICENSE" distributed in the NASM archive. Contents Chapter 1: Introduction . .15 1.1 What Is NASM? . .15 1.1.1 Why Yet Another Assembler?. .15 1.1.2 License Conditions . .15 1.2 Contact Information . .16 1.3 Installation. .16 1.3.1 Installing NASM under MS−DOS or Windows . .16 1.3.2 Installing NASM under Unix . .17 Chapter 2: Running NASM . .18 2.1 NASM Command−Line Syntax . .18 2.1.1 The −o Option: Specifying the Output File Name . .18 2.1.2 The −f Option: Specifying the Output File Format . .19 2.1.3 The −l Option: Generating a Listing File . .19 2.1.4 The −M Option: Generate Makefile Dependencies . .19 2.1.5 The −MG Option: Generate Makefile Dependencies . .19 2.1.6 The −MF Option: Set Makefile Dependency File . .19 2.1.7 The −MD Option: Assemble and Generate Dependencies. .19 2.1.8 The −MT Option: Dependency Target Name. .20 2.1.9 The −MQ Option: Dependency Target Name (Quoted) . .20 2.1.10 The −MP Option: Emit phony targets. .20 2.1.11 The −F Option: Selecting a Debug Information Format .
    [Show full text]
  • User's Manual
    User’s Manual P/N 064673-004 ® JANUS 2.4 GHz Installation Utility (4MB) Intermec Technologies Corporation 6001 36th Avenue West P.O. Box 4280 Everett, WA 98203-9280 U.S. service and technical support: 1-800-755-5505 U.S. media supplies ordering information: 1-800-227-9947 Canadian service and technical support: 1-800-688-7043 Canadian media supplies ordering information: 1-800-268-6936 Outside U.S. and Canada: Contact your local Intermec service supplier. The information contained herein is proprietary and is provided solely for the purpose of allowing customers to operate and/or service Intermec manufactured equipment and is not to be released, reproduced, or used for any other purpose without written permission of Intermec. Information and specifications in this manual are subject to change without notice. 1998 by Intermec Technologies Corporation All Rights Reserved The word Intermec, the Intermec logo, JANUS, IRL, TRAKKER, Antares, Duratherm, Precision Print, PrintSet, Virtual Wedge, and CrossBar are either trademarks or registered trademarks of Intermec Corporation. Throughout this manual, trademarked names may be used. Rather than put a trademark () symbol in every occurrence of a trademarked name, we state that we are using the names only in an editorial fashion, and to the benefit of the trademark owner, with no intention of infringement. Manual Change Record This page records the changes to this manual, which was originally released as version 001. Version Date Description of Change 002 12/96 New information was added for the JG2050 and for UDP Plus terminal emulation. 003 9/97 New information was added to describe using the installation utility on a JG2010.
    [Show full text]
  • NASM — the Netwide Assembler
    NASM — The Netwide Assembler version 2.12.02 © 1996−2016 The NASM Development Team — All Rights Reserved This document is redistributable under the license given in the file "LICENSE" distributed in the NASM archive. Contents Chapter 1: Introduction . .16 1.1 What Is NASM? . .16 1.1.1 Why Yet Another Assembler?. .16 1.1.2 License Conditions . .16 1.2 Contact Information . .17 1.3 Installation. .17 1.3.1 Installing NASM under MS−DOS or Windows . .17 1.3.2 Installing NASM under Unix . .18 Chapter 2: Running NASM . .19 2.1 NASM Command−Line Syntax . .19 2.1.1 The −o Option: Specifying the Output File Name . .19 2.1.2 The −f Option: Specifying the Output File Format . .20 2.1.3 The −l Option: Generating a Listing File . .20 2.1.4 The −M Option: Generate Makefile Dependencies . .20 2.1.5 The −MG Option: Generate Makefile Dependencies . .20 2.1.6 The −MF Option: Set Makefile Dependency File . .20 2.1.7 The −MD Option: Assemble and Generate Dependencies. .21 2.1.8 The −MT Option: Dependency Target Name. .21 2.1.9 The −MQ Option: Dependency Target Name (Quoted) . .21 2.1.10 The −MP Option: Emit phony targets. .21 2.1.11 The −F Option: Selecting a Debug Information Format . .21 2.1.12 The −g Option: Enabling Debug Information. .21 2.1.13 The −X Option: Selecting an Error Reporting Format. .21 2.1.14 The −Z Option: Send Errors to a File. .22 2.1.15 The −s Option: Send Errors to stdout ............................22 2.1.16 The −i Option: Include File Search Directories .
    [Show full text]
  • On Improving Cybersecurity Through Memory Isolation Using Systems Management Mode
    On Improving Cybersecurity Through Memory Isolation Using Systems Management Mode A thesis submitted for the degree of Doctor of Philosophy James Andrew Sutherland School of Design and Informatics University of Abertay Dundee August 2018 i Abstract This thesis describes research into security mechanisms for protecting sensitive areas of memory from tampering or intrusion using the facilities of Systems Man- agement Mode. The essence and challenge of modern computer security is to isolate or contain data and applications in a variety of ways, while still allowing sharing where desir- able. If Alice and Bob share a computer, Alice should not be able to access Bob’s passwords or other data; Alice’s web browser should not be able to be tricked into sending email, and viewing a social networking web page in that browser should not allow that page to interact with her online banking service. The aim of this work is to explore techniques for such isolation and how they can be used usefully on standard PCs. This work focuses on the creation of a small dedicated area to perform cryp- tographic operations, isolated from the rest of the system. This is a sufficiently useful facility that many modern devices such as smartphones incorporate dedic- ated hardware for this purpose, but other approaches have advantages which are discussed. As a case study, this research included the creation of a secure web server whose encryption key is protected using this approach such that even an intruder with full Administrator level access cannot extract the key. A proof of concept backdoor which captures and exfiltrates encryption keys using a modified processor wasalso demonstrated.
    [Show full text]
  • NASM — the Netwide Assembler
    NASM — The Netwide Assembler version 2.10.09 © 1996−2012 The NASM Development Team — All Rights Reserved This document is redistributable under the license given in the file "LICENSE" distributed in the NASM archive. Contents Chapter 1: Introduction . .16 1.1 What Is NASM? . .16 1.1.1 Why Yet Another Assembler?. .16 1.1.2 License Conditions . .16 1.2 Contact Information . .17 1.3 Installation. .17 1.3.1 Installing NASM under MS−DOS or Windows . .17 1.3.2 Installing NASM under Unix . .18 Chapter 2: Running NASM . .19 2.1 NASM Command−Line Syntax . .19 2.1.1 The −o Option: Specifying the Output File Name . .19 2.1.2 The −f Option: Specifying the Output File Format . .20 2.1.3 The −l Option: Generating a Listing File . .20 2.1.4 The −M Option: Generate Makefile Dependencies . .20 2.1.5 The −MG Option: Generate Makefile Dependencies . .20 2.1.6 The −MF Option: Set Makefile Dependency File . .20 2.1.7 The −MD Option: Assemble and Generate Dependencies. .21 2.1.8 The −MT Option: Dependency Target Name. .21 2.1.9 The −MQ Option: Dependency Target Name (Quoted) . .21 2.1.10 The −MP Option: Emit phony targets. .21 2.1.11 The −F Option: Selecting a Debug Information Format . .21 2.1.12 The −g Option: Enabling Debug Information. .21 2.1.13 The −X Option: Selecting an Error Reporting Format. .21 2.1.14 The −Z Option: Send Errors to a File. .22 2.1.15 The −s Option: Send Errors to stdout ............................22 2.1.16 The −i Option: Include File Search Directories .
    [Show full text]
  • The Netwide Assembler
    NASM – The Netwide Assembler version 2.15.05rc1 © 1996-2020 The NASM Development Team — All Rights Reserved This document is redistributable under the license given in the section "License". Contents Chapter 1: Introduction . 17 1.1 What Is NASM?. 17 1.1.1 License . 17 Chapter 2: Running NASM . 19 2.1 NASM Command-Line Syntax . 19 2.1.1 The -o Option: Specifying the Output File Name . 19 2.1.2 The -f Option: Specifying the Output File Format . 20 2.1.3 The -l Option: Generating a Listing File . 20 2.1.4 The -L Option: Additional or Modified Listing Info . 20 2.1.5 The -M Option: Generate Makefile Dependencies . 21 2.1.6 The -MG Option: Generate Makefile Dependencies . 21 2.1.7 The -MF Option: Set Makefile Dependency File . 21 2.1.8 The -MD Option: Assemble and Generate Dependencies . 21 2.1.9 The -MT Option: Dependency Target Name . 21 2.1.10 The -MQ Option: Dependency Target Name (Quoted) . 21 2.1.11 The -MP Option: Emit phony targets . 21 2.1.12 The -MW Option: Watcom Make quoting style . 21 2.1.13 The -F Option: Selecting a Debug Information Format . 22 2.1.14 The -g Option: Enabling Debug Information. 22 2.1.15 The -X Option: Selecting an Error Reporting Format . 22 2.1.16 The -Z Option: Send Errors to a File . 22 2.1.17 The -s Option: Send Errors to stdout ...........................22 2.1.18 The -i Option: Include File Search Directories . 23 2.1.19 The -p Option: Pre-Include a File .
    [Show full text]
  • Writing OS/2 Warp Device Drivers in C Third Edition 2
    1 Tuesday, May 06, 1997 Writing OS/2 Warp Device Drivers in C Third Edition 2 Disclaimer This book and software are provided -as is.' The implied warranties of merchantability and fitness for a particular purpose are expressly disclaimed. This book and software may contain programs that are furnished as examples. These examples have not been thoroughly tested under all conditions. Therefore, the reliability, serviceability, or function of any program or program code herein is not guaranteed. The information presented in this book was valid at the time it was written and was conveyed as accurately as possible by the author. However, some information may be incorrect or may have changed prior to publication. The author makes no claims that the material contained in this book is entirely correct, and assumes no liability for use of the material contained herein. 3 Trademarks and Copyrights IBM, AT, OS/2, Personal System/2, PS/2, and Micro Channel are registered trademarks of the International Business Machines Corporation. C/2, XT, and Presentation Manager are trademarks of International Business Machines Corporation. Intel is a registered trademark of the Intel Corporation. Lotus 1-2-3 is a registered trademark of Lotus Development Corporation. MS-DOS, CodeView and Microsoft are registered trademarks of Microsoft Corporation. Microsoft and Microsoft Windows are registered trademarks of Microsoft Corporation. UNIX is a registered trademark of AT&T Bell Laboratories. Copyright 1993 by Van Nostrand Reinhold Library of Congress Catalog Card Number 93-2264 ISBN 0-442-01729-4 All rights reserved. No part of this work covered by the copyright hereon may be reproduced or used in any form or by any means-graphic, electronic, or mechanical, including photocopying, recording, taping, or information storage and retrieval systems-without written permission of the publisher.
    [Show full text]
  • EXTENDING DOS a Programmers's Guide to Protected-Mode DOS Second Edition
    EXTENDING DOS A Programmers's Guide to Protected-Mode DOS Second Edition Edited by Ray Duncan Ray Duncan Charles Petzold Andrew Schulman M. Steven Baker Ross P. Nelson Stephen R. Davis Robert Moote Addison-Wesley Publishing Company, Inc. Reading, Massachusetts Menlo Park, California New York Don Mills, Ontario Wokingham, England Amsterdam Bonn Sydney Singapore Tokyo Madrid San Juan Paris Seoul Milan Mexico City Taipei Chapter 1—Programming the IBM PC j By Ross P. Nelson DOS Lives -i The Quest for RAM 2 The IBM PC Architecture 5 A New Family Member 7 Solving Real Problems IQ Using Protected Mode 25 DOS Extenders 23 Intel's 32-bit Microprocessors 24 Operating Environments 3Q What About OS/2? 31 Choosing Your Market 32 Chapter 2—Expanded Memory and the EMS 35 By Ray Duncan Components of Expanded Memory 37 Obtaining Access to Expanded Memory 40 Using Expanded Memory 44 EMS Pitfalls for Drivers and TSRs 49 EMS Emulators 52 EMS Example Program 54 Chapter 3—Extended Memory and the XMS 75 By Ray Duncan Reaching Extended Memory in Real Mode 78 The ROM BIOS Extended Memory Functions 79 Primitive Extended Memory Management 85 The eXtended Memory Specification (XMS) EXTENDING DOS, Second Edition Programming Example: The XMSDISK.SYS Driver 96 XMS Example Program 97 LOADALL: The Back Door to Extended Memory 116 Chapter 4—16-bit Protected-Mode DOS Extenders 121 By Andrew Schulman 123 Isn't the 286 Outdated? 124 DOS: The Outer Limits Protected-Mode MS-DOS ^7 No More Overlays BigMalloc Protected-Mode C++ Creating the Illusion 143 INT 21h Isn't Enough 146 The RUN286 Loader 150 Compatibility 153 Debugging with CVP and TDW under DOS 159 Isn't There Any Work Involved? 162 Bugs! 164 Real-Mode Practices 173 Limits to Transparency 188 New Features 191 Benefits and Limitations 295 Chapter 5—32-bit Protected-Mode DOS Extenders By M.
    [Show full text]
  • Protected Mode Registers As Universal Registers, Avoiding Any Interrupts, Employing the Wait-State for Other Than Its Intended Purpose, and So On
    PROTE CTE D he air-to-surface battle of 1991 demonstrated once again that among postmodern strategies of appearance, none is as effective as the simulation that there really is software. Until the proof to the contrary on the field of combat—where computers unambiguously revealed themselves as hardware for the destruction of Iraqi hardware (as durable goods are still called in everyday English)—advertising brochures and media conferences spread the fairytale of a development of software that would become increas- ingly more innocuous and user-friendly, more spiritual and intelli- gent, until one day in the not so distant future it would effectively lead to German idealism—that is, it would become human. And that is why software, the billion-dollar enterprise out of one of the cheapest elements on Earth, makes every attempt to prevent the aforenamed humans from ever even coming into contact with the corresponding hardware. With Word 5.0 on a no-name AT 386 and (as one so nicely says) under the operating system Microsoft DOS 3.3, one can write entire essays on precisely these three entities without even suspecting the strategy of appearance. For one writes—the 'under' says it already—as a subject or underling of the Microsoft Corporation. This worm's-eye view did not always prevail. In the good old days when microprocessor pins were still big enough for simple sol- dering irons, even literary critics could do whatever they wished with Intel's 8086 Processor. Even standard chips, which at that time still required one hundred thirty-three cycles for the multiplication of a single whole number, could be raised to the processing speed of primitive signal processors through a variety of strategies: not dif- ferentiating between RAM and ROM, misusing both of the stack 156 Protected Mode registers as universal registers, avoiding any interrupts, employing the wait-state for other than its intended purpose, and so on.
    [Show full text]
  • ||||||||IIIHIIII O USOO544551A United States Patent (19) 11) Patent Number: 5,144,551 Cepulis (45) Date of Patent: Sep
    ||||||||IIIHIIII o USOO544551A United States Patent (19) 11) Patent Number: 5,144,551 Cepulis (45) Date of Patent: Sep. 1, 1992 (54) COMPUTER MEMORY MANAGEMENT METHOD UTILIZING SEGMENTATION OTHER PUBLICATIONS AND PROTECTION TECHNIQUES Oct. 20, 1988 Intel Corporation letter and attachments from Ms. S. Roach regarding emulating 286 Loadall 75)75 InventorI : Darrenen J. Cepulis, Houston,s Tex instruction. Attachments include suggested code for (73) Assignee: Compaq Computer Corporation, emulation. Houston, Tex. Microprocessor and peripheral handbook, vol. I, Intel (21) Appl. No.: 714,552 Corp. 1988, pp. 4-121-4-127. e J. Crawford, P. Gelsinger, Programming the 80386, (22 Filed: Jun. 13, 1991 Sybex, 1987, pp. 54-59, 431-477, 488-489, 644-646. Related U.S. Application Data Primary Examiner-Kevin A. Kriess Attorney, Agent, or Firm-Pravel, Gambrell, Hewitt, 63) Continuation of Ser. No. 354,144, May 19, 1989, aban- Kimball & Krieger doned. ABST 5) Int. C. .............................................. G06F 12/00 (57)7 RAct 52) U.S. C. ............................. 395/425; 364/DIG. 1; A method for managing memory in a computer system 364/232.9, 364/246.6, 364/246.7:364/247; utilizing Intel Corporation's method of segmentation, 364/247.3; 364/247.2; 364/243; 364/243.4; memory management and protection techniques. The 364/243.41; 364/255.7; 364/255.1; 364/254.8; method is directed toward loading all computer regis 364/264; 364/264. 1; 364/DIG. 1; 395/650; ters and segment descriptor tables from a table of pre 395/700 stored values in memory while operating in real mode.
    [Show full text]