If you have not yet seen The Designer's Guide to VHDL, the following information may be of interest to you:
Table of Contents
Foreword by Paul Menchini
Back cover text
The following lead to support material for the book:
Source code and test benches for examples and case studies
Introductory lecture material for use by instructors
Suggestions for modeling exercises
One of the case studies in the book is a model of the DLX processor, described by John Hennessy and David Patterson in their book Computer Architecture: A Quantitative Approach. Additional support material for the DLX is available.
Other sources of VHDL-related information:
The VHDL International Internet Server (www.vhdl.org)
The comp.lang.vhdl Usenet news group Frequently Asked Questions (FAQ) file
I would be pleased to hear your comments about the book. You can email comments and errata to me at firstname.lastname@example.org .
Thanks, and happy reading!