Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cadence VHDL compiler + This book = Arghhhhhhhhhhhhhhhhhhhh!

For those who use the Cadence Leapfrog CAD tool, DON'T buy this book! There are major incompatibilities with this book and Leapfrog of Cadence 4.4. Moral of the story: Cadence is considered an industry standard CAD tool for IC and digital designers, and you can figure out the rest.