Welcome to the website for Ashenden, P: Digital Design (VHDL): An Embedded Systems Approach Using VHDL.
Digital Design (VHDL)
About this companion site
This site includes links to:
- Source code for all of the example HDL models in the book
- Tutorial on the VHDL hardware description language
- Tutorial on the use of EDA tools for design projects
- Links to CAD Software vendors (Mentor Graphics®, Xilinx®, Synplicity®)
- Reference documents
- An assembler for the Gumnut processor
- Supplementary appendices
- Errata sheet (PDF)
Computer-Aided Design Software
Professional-strength computer-aided design (CAD) software is available from:Synplicity® University Program Demos & Information
Synplicity tools allow tomorrow's designers the ability to gain valuable experience with the latest methodologies and technologies and state-of-the-art EDA solutions. Please visit www.synplicity.com/university1 and to access to the following valuable information on Synplicity and Synplicity's Software solutions:
- Synplify Pro Demo, Training Materials, User Guide & Other Information
- Free Synplicity Tools for instructors at accredited universities
- Synplicity Application Notes
- Synplicity Product Demos & Other Information
- Synplicity Interships & Careers
(Instructors should visit the Instructor Page for this book to get more details on obtaining a free version of Synplify Pro for instructional use.)ModelSim® Xilinx Edition III VHDL and Verilog Simulator
"ModelSim Xilinx Edition-III is the low cost version of the industry's most popular simulation environment
ModelSim XE-III (MXE-III) provides a complete HDL simulation environment that enables you to verify the functional and timing models of your design, and your HDL source code. MXE-III is optimized for use with all configurations of Xilinx ISE™ products."
For more information, click the link below:
This tutorial introduces the basic language features that are needed to get started in modeling relatively simple digital systems. It does not comprehensively review the language. For a full coverage, the reader is referred to The Designer's Guide to VHDL, 2nd Edition, by Peter J. Ashenden, published by Morgan Kaufmann Publishers (ISBN 1-55860-674-2). To access the tutorial, click below: VHDL Tutorial (PDF)
Source Code for HDL Models
The source code for all of the example HDL models featured in the book is available here.
Tutorials on the Use of EDA Tools for Design Projects
Click the links below to access tutorials on the use of EDA tools for design projects.
Available here is the Wishbone bus spec mentioned in the book, plus other public reference documents (added by the author as they become available).
Assembler for the Gumnut Processor
An assembler for the Gumnut Processor is available here.
Available here are supplementary appendices, including one on K-maps.
An Errata Sheet will be posted here if it becomes necessary.
Information provided in this document is provided "as is" without warranty of any kind, either express or implied. Every effort has been made to ensure accuracy and conformance to standards accepted at the time of publication. The reader is advised to research other sources of information on these topics.
The user assumes the entire risk as to the accuracy and the use of this document. This document may be copied and distributed subject to the following conditions:
All text must be copied without modification and all pages must be included;
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This document may not be distributed for profit.