My documentation is here:
http://www.calumsult.com/calumsu/disassembler/
Look in the SVX folder. You can make changes to the memory.txt file and let dis automatically add the comments for you as you uncover rom/ram addresses. To run dis you need to have .net and MS C# express (free from MS) installed on your machine, or I need to get off my butt and repackage it as a stand-alone.
If you use it and have problems getting it to run, questions, or comments, just post and I'll help.
Btw, once you start figuring out how the bits in rom work, I would start building a TunerPro xdf file. Tuner Pro is free, and really good for working with older ROM based ecus. You can see how I set it up for Nissans here:
http://www.sr20forum.com/realtime-ec...unerprort.html
Download the B13 xdf for a sample xdf file. I would actually start with that and just delete all but a handful of tables, then copy and change those as you add in the SVX tables.