Tools I have created to help with NES/Famicom development.

Note: this is under heavy development and it's not currently usable.

nasm is an assembler specifically tailored for the NES/Famicom. Read more about it in ./crates/nasm/README.md.

Since nasm is still under heavy development, it's a good idea to compare the results that it produces with a mature and stable assembler like cc65. The purpose of xa65 is to provide a bridge, and so it simply executes both nasm and cc65 with the given arguments. If the results from both assemblers are not the same, then it will display a warning and produce the binary as taken from cc65. Moreover, if you want this warning to be an error instead, then use the --no-errors.

Last but not least, you can also pass flags to xa65 like --strict, which will invoke nasm with more pedantic features like its address sanitizer.

The readrom program reads a given ROM file and shows all the information that can be gathered from it. For now this only applies to information on the header, but in the future we might want to add disassembling user-specified segments, for example.

This repository holds two licenses, as you can also note on the Cargo.toml file. As it's written there:

• The source code on the crates/ directory is licensed under the GNU GPLv3 (or any later version).
• The source code on the lib/ directory is licensed under the GNU LGPLv3 (or any later version).

In practice, for the libraries under lib/ this means that if you plan to compile your binary statically, you still need to abide by the LGPLv3+ license. This means at least providing the object files necessary to allow someone to recompile your program using a modified version of these libraries. See the LGPLv3 license for more details.