Kerr Jnr expanded the SEGA SC-3000 BASIC software catalog in the mamedev/mame repository by introducing two new, verified software definitions for both PAL and Japan versions. Focusing on XML and data management, Kerr ensured each entry was accurately attributed and versioned, supporting reproducible testing and improved regional coverage. The work emphasized catalog integrity and traceability, enabling more reliable validation across different platforms. Although no bugs were addressed during this period, the targeted feature enhancement deepened the repository’s regional test coverage and data accuracy. Kerr’s approach demonstrated careful attention to software list structure and compatibility within the broader development workflow.