I just found a link to the technical documents for Origin’s Ultima VI: The False Prophet (Amazon.com product link).
Here is the link to the technical documentation: http://www.ultimaaiera.com/blog/ultima-6-technical-documents/
And the blurb from the originating site:
Courtesy of former Origin programmer Bill Randolph, and thanks to the tireless efforts of Joe Garrity of the Origin Muesum, Ultima Aiera is pleased to present four documents — which have been broken out into over thirty images — which discuss some of the technical details of Ultima 6.
Specifically, the documents — all of which appear to be internal documents from Origin Systems — discuss the conversation syntax of the game and its technical implementation, the object design of the game, and the in-house map editor that Origin developers used to construct the Ultima 6 game world.
There is some truly fascinating stuff to be found within these pages, at least for those who enjoy getting a look at the technical foundations of software.