PREFACE
This manual is a technical reference and BIOS document for engineers and technicians
providing system level support. It is assumed that the reader possesses a detailed
understanding of AT-compatible microprocessor functions and digital addressing techniques.
Technical information that is readily available from other sources, such as manufacturer's
proprietary publications, has not been reproduced.
This manual contains summary information only. For additional reference material, refer to the
bibliography.
ORDERING INFORMATION FOR THE PHOENIX BIOS MANUAL
System BIOS for IBM PCs, Compatibles, and EISA Computers (ISBN 0-201-57760-7) by
Phoenix Technologies is available in many bookstores. It can also be ordered directly from the
publisher as follows:
In the U.S.A.
Call Addison-Wesley in Massachusetts at +1-800-447-2226, and be prepared to give a credit
card number and expiry date.
In Europe
Send your request to Addison-Wesley at the address given below, and be prepared to give a
credit card number and expiry date.
Addison-Wesley
Concertgebouwplein 25
1071 LM Amsterdam, The Netherlands
Tel: +31 (20) 671 72 96
Fax: +31 (20) 675 21 41
CONVENTIONS
The following conventions are used throughout this manual to identify specific elements:
•
Hexadecimal numbers are identified by a lower case h.
For example, 0FFFFFFFh or 32F5h
•
Binary numbers and bit patterns are identified by a lower case b.
For example, 1101b or 10011011b