[Gmecm] disassembly 101 / writing a commented hack

[William Lucke]

I'd like to get started hacking the OBDI Cadillac Northstar computer (). 
I have a couple of different BCC's, as well as a dyno program that only 
has engine management turned on.

I'm familiar with assembly and have worked with commercial 68HC11's in 
development boards. I'm familiar with the concepts of disassembly and 
I'm ready to devote the time necessary to reverse engineer this program.

What I'm not sure of, however, is where to start.
What's the best disassembler to use on GM chip images?

Is there a listing of the memory locations of the data for the ALDL 
stream? Other than starting at the beginning, I'm not entirely sure how 
to enter the program and know what's what.



Will