Books
Links to books that are available on the net. If you've used one of these, please let us know how you found it so we can add some comments below each. If you've used one not listed below, please contact us, and we'll gladly add it.
Digital Design
Digital Design - Principles and Practice
by john f. wakerly
prentice hall
http://www.ddpp.com/
A good book, part of the xilinx library, and includes a copy of foundation student edition (limited to 20,000 gates) development software.
Verilog
Verilog HDL - A Guide to Digital Design and Synthesis
by Samir Palnitkar
Sun Microsystems Press
http://www.sun.com/books/catalog/Palnitkar/
This was the standard text for a good verilog course i attended about two years ago, and was the in-house verilog starter manual for anyone going anywhere near an asic. the cd includes a verilog simulator (silos iii if i recall correctly).
VHDL
The Student's Guide to VHDL
by Peter Ashenden
Morgan Kaufmann
Authors Site
The Designer's Guide to VHDL, 2nd Edition
by Peter Ashenden
Morgan Kaufmann
Authors Site
VHDL For Designers
by Lennart Lindh and Stefan Sjoholm
Prentice hall
Available on Amazon.com
FPGA Synth