24 days ago
- mGBA allows GBA developers to use printf-like functionality for debugging by writing to specific memory-mapped registers.
- Logging is enabled by writing 0xC0DE to REG_LOG_ENABLE, writing the message to REG_LOG_BUFFER, and then sending a log level to REG_LOG_SEND.
- The log levels include ERROR, WARNING, INFO, and DEBUG, with each corresponding to a specific value for the REG_LOG_SEND register.
- Logs can be viewed in mGBA's Tools > View logs... window or output to the terminal if launched from the command line with --log-level.
- Advanced logging features include printf-style formatting using vsnprintf and conditional compilation with a macro to exclude logging from release builds.