nes-elite-beebasm VS nes-contra-us

One of the books was an entire annotated disassembly of the BASIC interpreter, if memory serves. I vaguely remember there being some sort of kerfuffle about that.

Another thing that one got: a printed circuit diagram of the machine.

As for today: One can get get an entire annotated disassembly for Elite, including the version that used the Second Processor: https://www.bbcelite.com

Alas, the NTSC version doesn't actually work on NTSC consoles. The NMI timings have been changed to work with some (but not all) emulators in NTSC mode, but it isn't a full NTSC conversion, it's an NTSC emulation (at least, that's what the authors call it in that version's scroll text).

There's a full list of differences between the PAL and NTSC versions here:

https://github.com/markmoxon/nes-elite-beebasm/tree/main#dif...

I've been working on disassembling and documenting the US Contra NES rom. I think it's at a state now that I can share. I've created a public repo at https://github.com/vermiceli/nes-contra-us. I really hope that this information is useful for some here. This disassembly is properly labeled which allows for modification without breaking jumps and branching. It includes supplemental documentation, diagrams, lua scripts, and tooling to build the rom. I'd appreciate any feedback on the assembly, for example if there was a better way to write or document the assembly. In general, any feedback, questions, or discussions are welcome. I'm happy to answer with what I know. My next goals with this project are to look into being able to generate Probotector rom (the European release) as well, which is very similar. I also am looking at seeing how challenging this will be to port to the Commander X16. Has anyone looked into development on the Commander X16? The community there has been very helpful so far.