CRC Press Operating System Design: The Xinu Approach, Second Edition

As Dr. Comer claims in the beginning of this book, it is a very clear instructional book that is different from any other operating systems text book. A good example is the poor way most OS books try to visualize the concept of a process using a squiggly line. Instead this book describes the concept and before going on much further actually has exerts from the XINU code itself and if you're unsure about anything "fluffy" concept seeing the code now makes this idea much simpler. Further the code is discussed and then parallels to modern operating systems and the simplifications being made in XINU are made apparent at every step so the reader who is just learning about the inner-workings of operating systems for the first time isn't overburdened with rigorous implementation details.

I thought that this was going to be another great book but it is not. Each chapter is a ball of spaghetti and at the end you don't remember anything. His other books on networking and computer architecture are very good.

The book content is great. The binding is garbage. It literally fell apart my first time opening it.