Tanenbaum wrote a textbook, Distributed Operating Systems[1], which covers in some detail the design and implementation of the Amoeba system. I recommend checking it out if you're interested in these things. The detail I enjoyed the most is how the use of multiple independent hardware platforms allowed a user on the overall system to execute binaries for multiple architectures seamlessly. Not the most useful feature, but still neat in my book. I also remember reading it around the same time I was just getting started with the Python programming language unrelatedly, and was very interested to learn later that Python originated with the Ameoba project.

I enjoy all of Tanenbaum's textbooks, but their price here in the US is very high if you're just a hobbyist, or a professional for whom operating system design is a hobby interest, so you may want to get them from the library. (Or, for what it's worth, my personal copies are from India and were much cheaper.)

[1]: http://www.amazon.com/Distributed-Operating-Systems-Andrew-T...