Adds syntax highlighting to RGBASM assembly files in Atom.

RGBASM is the assembler dialect used for programming Game Boy games with the Rednex Game Boy Development System (RGBDS).

This is sometimes erroneously referred to as "Z80 assembler"; although the Game Boy's CPU is similar to Z80 and 8080, it's distinct, and using Z80 syntax highlighting isn't ideal, especially when using RGBASM features.

• RGBASM language documentation
• RGBASM Game Boy CPU opcode reference

See issues for known bugs and planned features.

Please open an issue to report something. Pull requests are more than welcome.

This grammar was inspired by other related grammars, but focuses on coverage of RGBASM, including features from newer versions of RGBDS.

• https://github.com/Bananattack/rgbds_textmate – RGBASM grammar for TextMate
• https://github.com/DonaldHays/rgbds-vscode/blob/master/syntaxes/rgbds-asm.tmLanguage - RGBASM grammar for VSCode
• https://atom.io/packages/language-gb – TASM grammar for Atom
• https://atom.io/packages/language-z80asm – generic Z80 grammar for Atom