User`s guide

About This Guide
This guide describes Digital Semiconductor’s 21164 Alpha Microprocessor
Evaluation Board (also called the EB164), an evaluation and development
module for computing systems based on the 21164 Alpha Microprocessor and
the Digital Semiconductor 21171 core logic chipset.
Audience
This guide is intended for system designers and others who use the EB164 to
design or evaluate computer systems based on the 21164 microprocessor and
21171 chipset.
Scope
This guide describes the features, configuration, functional operation, and
interfaces of the EB164. This guide does not include specific bus specifications
(for example, PCI or ISA buses). Additional information is available in the
EB164 schematics, program source files, and appropriate vendor and IEEE
specifications. See Appendix C for information about how to order related
documentation and obtain additional technical support.
Content
This guide contains the following chapters and appendixes:
• Chapter 1, Introduction to the EB164, is an overview of the EB164,
including its components, uses, and features.
• Chapter 2, System Configuration and Connectors, describes the user
environment configuration; board connectors and functions; jumper
functions; and identifies jumper and connector locations.
• Chapter 3, Functional Description, provides a functional description of
the board, including the 21171 chipset, L3 backup cache (Bcache) and
memory subsystems, systems interrupts, clock and power subsystems,
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