gbasm

Parses all source files and definitions before resolving names or sizes, ensuring accurate symbol resolution as highlighted in the compatibility notes.

Adds higher-level instructions like addw and ldxa that compile to multiple native ops, improving source code readability as demonstrated in the instructions section.

Supports both expression macros for single values and expansion macros for code blocks, allowing for advanced code reuse and abstraction, detailed in the macros section.

Includes custom msg opcodes for debugger logging and generates symbol maps for tools like bgb, facilitated by the --debug and --symfile options.