The BOOM processor can be found at (https://github.com/ucb-bar/riscv-boom).
You can download this document from (https://ccelio.github.io/riscv-boom-doc).
There is also a Google group at (https://groups.google.com/forum/#!forum/riscv-boom).
To build (and then read) the latest version of this document using Latex:
$ git clone https://github.com/ccelio/riscv-boom-doc.git
$ cd riscv-boom-doc
$ make
$ open main.pdf
The information in this publication is subject to change without notice.
Copyright 2016 Christopher Celio
The "BOOM Design Specification" is licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0). To view a copy of this license, visit (http://creativecommons.org/licenses/by/4.0/).
Pull requests to this document are welcome!