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Preface
This
Technical Information Manual
provides information for the IBM PC 300GL Types 6268, 6278, and
6288. It is intended for developers who want to provide hardware and software products to operate with
these IBM computers and provides an in-depth view of how these IBM computers work. Users of this
publication should have an understanding of computer architecture and programming concepts.
Related publications
In addition to this manual, the following IBM publications provide information related to the operation of the
IBM PC 300GL.
PC 300GL User Guide
This publication contains information about configuring, operating, and maintaining the PC 300GL, as
well as installing new options in the PC 300GL. Also included are warranty information, instructions
for diagnosing and solving problems, and information on how to obtain help and service.
Understanding Your Personal Computer
This online document includes general information about using computers and detailed information
about the features of the PC 300GL.
About Your Software
This publication (provided only with computers that have IBM-preinstalled software) contains
information about the preinstalled software package.
Hardware Maintenance Manual
This publication contains information for trained service technicians. It is available at
http://www.ibm.com/pc/us/cdt/hmm.html on the World Wide Web, and it can also be ordered from IBM.
To purchase a copy, refer to the "Getting Help, Service, and Information" section in
PC 300GL User
Guide
.
Compatibility Report
This publication contains information about compatible hardware and software for the PC 300GL. It is
available at http://www.ibm.com/pc/us/cdt on the World Wide Web.
Network Administrator's Guide
This publication contains information for network administrators who configure and service local area
networks (LANs). Look for this publication at http://www.ibm.com/pc/us/cdt on the World Wide Web.
Terminology usage
Attention: The term
reserved
describes certain signals, bits, and registers that should 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 register are changed, the state of the reserved bits must be preserved.
When possible, read the register first and change only the bits that must be changed.
In this manual, some signals are represented in a small, all-capital-letter format (-ACK). A minus sign in
front of the signal indicates that the signal is active low. No sign in front of the signal indicates that the
signal is active high.
The use of the term
hex
indicates a hexadecimal number. Also, when numerical modifiers such as “K”,
“M” and “G“ are used, they typically indicate powers of 2, not powers of 10. For example, 1 KB equals
1 024 bytes (2
10
), 1 MB equals 1048576 bytes (2
20
), and 1 GB equals 1073 741824 bytes (2
30
).
vi Copyright IBM Corp. September 1999