Contributed to the mamedev/mame repository by expanding the SEGA SC-3000 BASIC software catalog, focusing on enhancing regional coverage and data accuracy for both PAL and Japan versions. Leveraged XML for precise data management, introducing two new verified BASIC Level 2 software definitions to improve catalog integrity and support reproducible testing across regions. Emphasized clear version control and traceability, ensuring that updates were well-documented and attributed for future validation. The work centered on software development practices that prioritize maintainability and compatibility, addressing the needs of platform testing without introducing bug fixes during the period, and strengthening the reliability of the software list.