TECHNICAL
REFERENCE
SERIES
~
System
BIOS
for
IBM®
pes,
Compatibles,
and
EISA
Computers,
Second
Edition
The
Comrltplete
Guide
to
ROM=Based
System
Soft\Vare
P
HOE
N I X T E C H N 0
LOG
I E S L T
Do
'YAy
Addison-Wesley
Publishing
Company,
lIneo
Reading, Massachusetts Menlo Park, California NewYork
Don Mills, Ontario Wokingham, England Amsterdam Bonn
Sydney Singapore Tokyo Madrid
San
Juan
Paris Seoul Milan Mexico City Taipei
Many
of
the designations used
by
manufacturers and sellers to distinguish their products
are
claimed as trademarks. Where those designations appear in this book
and
Addison-Wesley
was
aware
of
a trademarkclaim, the designations have been printed
in
initial capital letters.
Limitation of
liability
While everyreasonable precaution has been taken in the preparation ofthis book,
the
author
and
the publishers assume no responsibility for errors
or
omissions,
or
for the uses
made
of
the
material contained herein
or
the
decisions based on such use. No warranties
are
made,
express
or
implied,
with
regard to the contents
of
this work, its
merchantabili~
or
fitness for a
particularpurpose. Neither
the
author nor the publishers shall be liable for direct, special,
incidental,
or
consequential damages arising out of the use
or
inability to use
the
contents of
this book.
Library of Congress Cataloging-in-Publication Data
System
BIOS
for
IBM
Pes,
compatibles, and
EISA
computers : the
complete guide to ROM-based system software / Phoenix Technologies
Ltd.
--2nd
00.
p. cm.
--
(Phoenix technical reference series)
2nd 00. of: System
BIOS
for
IBM
PC/XT/
AT
computers and
compatibles.
Includes bibliographical references
and
index.
ISBN
0-201-57760-7
1.
IBM
Personal Computer.
2.
EISA
(Computer bus)
3.
Operating
systems (Computers) I. Phoenix Technologies.
II.
Title: System
BIOS
for
IBM
PC/XT/
AT
computers and compatibles.
III.
Series.
QA76.8.I2594S98
1991
005.4'469--dc20 91-15679
CIP
Copyright ©
1991,
1990, 1989, 1988,
1987
by
Phoenix Technologies Ltd.
All rights reserved.
No
part
of
this publication may
be
reproduced, stored in a retrieval system,
or
transmitted in
any
form or
by
any means, electronic, mechanical, photocopying, recording,
or
otherwise, without
the
prior written permission of the publisher. Printed in the United States
of
America. Published simultaneously in Canada.
Cover design
by
Hannus
Design Associates
Text design
by
Phoenix Technologies Ltd.
Set in 10-point Palatino
by
Phoenix Technologies Ltd.
ISBN
0-201-57760--7
1 2 3 4 5 6 7 8 9-MW-9594939291
First printing, May
1991
Trademarks
This
manual
acknowledges the following trademarks:
Ashton-Tate
and
Framework are registered trademarks ofAshton-Tate Corporation.
AST is a registered trademark
of
AST Research, Inc.
AT,
IBM,
Personal Systems/2, PS/2,
and
PC/
AT
are registered trademarks
of
the International Business
Machines Corporation. PC-DOS, PC/XT, VGA, CGA, MCA, MDA, EGA,
OS/2,
and
Micro Channel are
trademarks of the International Business Machines Corporation.
Hercules, Hercules Graphic Card,
and
Hercules Graphic
Adapter
are trademarks
of
Hercules
Computer
Technology.
Intel
is
a registered trademark
of
Intel Corporation.
1-2-3, Lotus,
and
Symphony are registered trademarksof Lotus Development Corp.
Motorola is a registered trademark
of
Motorola Semiconductor Products, Inc.
MS,
MS-DOS,
XENIX,
and
Microsoft are registered trademarks of Microsoft Corporation.
NEC
and
Multisync are registered trademarks of Nippon Electric Corporation.
Quadram
is a registered trademark
of
Quadram
Corporation.
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