tools.nes/lib/xixanta/src, branch main

Do not mark some valid identifiers as invalid

2026-08-18T14:44:27Z

Some identifiers like "@aa" were marked as invalid as "aa" is a potentially hexadecimal value, but the "@" symbol actually disambiguates this situation. Hence, if a non-alphanumeric character (that the parser liked) is actually found, ensure it cannot be considered as an hexadecimal value. Provide also a test of is_valid_identifier(). The list is certainly not exhaustive, but it should be good enough coupled with end-to-end tests. Signed-off-by: Miquel Sabaté Solà

Validate labels when walking through the context

2026-08-18T14:41:34Z

The parser does not validate label names completely (it only takes care of validating that it something that makes sense syntactically). The assembler can tell whether the label is actually taking a reserved name, or an invalid hexadecimal constant, etc. Before this commit a user would get a cryptic "invalid identifier" message when referencing an invalid label (e.g. "jmp 1234"). Fix this by validating the identifier there, but also when the label was defined before any of this. Signed-off-by: Miquel Sabaté Solà

Add global labels

2026-08-18T14:39:37Z

These are labels that are declared by prefixing a '#' symbol to the name, and it allows the label to be declared at the global scope instead of the current one. This is a feature which is not to be abused so to not make scopes pointless, but it can be quite handy with some optimizations while not abandoning scopes completely. Signed-off-by: Miquel Sabaté Solà

Fix the opcode for the 'sed' instruction

2026-08-17T21:07:03Z

Signed-off-by: Miquel Sabaté Solà

Add the runrom crate and the vnf library

2026-08-17T21:06:23Z

The vnf library supports the runrom crate and they both combined enable users to "run" a ROM file. This is basically an emulator, but with two key differences: 1. It is to be run programatically. That is, you are not expected to play games with this, but to run code by steps, start at a given address, run a function, etc. 2. It is headless: there are no graphics displayed on screen, nor sound being delivered. Thus, the target for both these things are developers, not players. This way developers can validate code paths without needing a full blown emulator. You can write tests with this and be able to run some checks as part of your testing infrastructure. Signed-off-by: Miquel Sabaté Solà

Remove .github directory

2026-07-22T15:00:00Z

Signed-off-by: Miquel Sabaté Solà

readrom: implement the -d/--disassemble option

2026-07-15T20:11:50Z

This option can also be coupled with -n/--nasm-directory, and you can then get a human-readable disassembling of any proc or label you might be thinking on. Signed-off-by: Miquel Sabaté Solà

Save known addresses into .nasm/addresses.txt

2026-07-15T06:10:45Z

This new file contains all the addresses that are known to the assembler, belonging to either proc's or plain labels. For the former we will further be able to tell the "end" of the proc. With that, the file follows a simple CSV format, with the name, start and end. Signed-off-by: Miquel Sabaté Solà

Generalize MemoryRange into Range

2026-07-14T05:36:14Z

Leading up to also having address ranges exported to callers, which should be using the same infrastructure. Signed-off-by: Miquel Sabaté Solà

Use 'full_name' everywhere in check()

2026-07-14T05:11:59Z

Signed-off-by: Miquel Sabaté Solà