op65

op65 is an early-stage 65C02 assembler written in C++.

The current language draft includes labels, sublabels, comments, immediates, string literals, and directives such as .org, .ascii, .data, .symbol, and .zero.

Build

Configure and build with CMake:

cmake -S . -B build
cmake --build build

Run

Run the bootstrap executable:

./build/op65

Tokenize an input file and dump tokens:

./build/op65 path/to/file.asm --dump-tokens

Test

Run the test suite with:

ctest --test-dir build --output-on-failure

Project Notes

• Grammar draft: dev/grammar.md
• Sample source file: examples/sample.asm