mamedev/mame
Aug 2025 – May 2026
5 Months active
Languages Used
C++
Technical Skills
Code CorrectionCode MaintenanceData ManagementEmulationEmulator DevelopmentGame Development
sjy555525
PROFILE
Sjy555525
Worked on the mamedev/mame repository, focusing on improving emulation accuracy and data integrity through targeted C++ development. Delivered features such as explicit input mappings for arcade titles and reconfigured input handling to enhance gameplay fidelity. Addressed multiple metadata and ROM data issues by correcting game titles, region descriptions, licensing, and year data, ensuring accurate cataloging and reliable startup behavior. Applied skills in code correction, debugging, and emulator development to resolve boot loops, standardize metadata, and fix ROM loading for specific game variants. Collaborated across modules and maintained clear documentation, contributing to more robust game emulation and maintainable codebases.
Overall Statistics
Feature vs Bugs
29%Features
Repository Contributions
11Total
Bugs
5
Commits
11
Features
2
Lines of code
440
Activity Months5
Your Network
119 peopleWork History
May 2026
2 Commits
May 1, 2026May 2026 developer monthly summary for mamedev/mame focusing on ROM data handling and ROM metadata corrections to improve emulation accuracy and data integrity across Namcos2 titles. Highlights include bug fixes for the Japanese Final Lap 2 ROM loading and corrected ROM labels/descriptions for Final Lap 2 and San Francisco Rush 2049. These changes enhance emulation reliability, data integrity, and user-visible metadata, with traceable commits.
2 Commits
May 1, 2026May 2026 developer monthly summary for mamedev/mame focusing on ROM data handling and ROM metadata corrections to improve emulation accuracy and data integrity across Namcos2 titles. Highlights include bug fixes for the Japanese Final Lap 2 ROM loading and corrected ROM labels/descriptions for Final Lap 2 and San Francisco Rush 2049. These changes enhance emulation reliability, data integrity, and user-visible metadata, with traceable commits.
May 2026
February 2026
2 Commits
Feb 1, 2026February 2026 (2026-02): Delivered metadata accuracy fixes in mamedev/mame, focusing on correct year data and standardized region descriptions. Implemented cross-driver corrections including The Pirates of Dark Water year fix and Slap Fight region description corrections, with MT09132 adjustments. Changes touched snesb.cpp, taito_f2.cpp, and slapfght.cpp. Result: improved catalog data quality, searchability, and user trust; demonstrated strong C++ driver-level patching and cross-module collaboration within the MAME project.
February 2026
2 Commits
Feb 1, 2026February 2026 (2026-02): Delivered metadata accuracy fixes in mamedev/mame, focusing on correct year data and standardized region descriptions. Implemented cross-driver corrections including The Pirates of Dark Water year fix and Slap Fight region description corrections, with MT09132 adjustments. Changes touched snesb.cpp, taito_f2.cpp, and slapfght.cpp. Result: improved catalog data quality, searchability, and user trust; demonstrated strong C++ driver-level patching and cross-module collaboration within the MAME project.
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025 monthly work summary for mamedev/mame. Focused on delivering user-facing input handling improvements and ensuring metadata accuracy to support better usability, data integrity, and emulator reliability.
2 Commits • 1 Features
Oct 1, 2025October 2025 monthly work summary for mamedev/mame. Focused on delivering user-facing input handling improvements and ensuring metadata accuracy to support better usability, data integrity, and emulator reliability.
October 2025
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025: Delivered explicit input mappings for Namco Race On! and Angler King in MAME to enable accurate joystick, paddle, and pedal interactions, improving gameplay accessibility and control fidelity (commit ef0ffe8b1728df7ee92c22734d20046b986eeb5b). Resolved Monster Maulers UAA startup boot loop by correcting default NVRAM data and updating the NVRAM filename and CRC/SHA1 checksums (commit 7c58a5147b2b132e1e91c1271a23c5f2b5c8d7cc). These changes reduce startup failures and improve emulator reliability, with clear ownership by sjy96525. Technologies demonstrated include input mapping design, NVRAM data management, and integrity validation; business value includes smoother user experience and lower maintenance risk.
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025: Delivered explicit input mappings for Namco Race On! and Angler King in MAME to enable accurate joystick, paddle, and pedal interactions, improving gameplay accessibility and control fidelity (commit ef0ffe8b1728df7ee92c22734d20046b986eeb5b). Resolved Monster Maulers UAA startup boot loop by correcting default NVRAM data and updating the NVRAM filename and CRC/SHA1 checksums (commit 7c58a5147b2b132e1e91c1271a23c5f2b5c8d7cc). These changes reduce startup failures and improve emulator reliability, with clear ownership by sjy96525. Technologies demonstrated include input mapping design, NVRAM data management, and integrity validation; business value includes smoother user experience and lower maintenance risk.
August 2025
3 Commits
Aug 1, 2025Monthly work summary for 2025-08: Metadata accuracy improvements across the arcade drivers in mamedev/mame, focusing on titles, descriptions, regions, and licensing to improve identification of game sets and regional variations.
3 Commits
Aug 1, 2025Monthly work summary for 2025-08: Metadata accuracy improvements across the arcade drivers in mamedev/mame, focusing on titles, descriptions, regions, and licensing to improve identification of game sets and regional variations.
August 2025
Activity
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Quality Metrics
Correctness96.4%
Maintainability94.6%
Architecture90.8%
Performance90.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++ programmingCode CorrectionCode MaintenanceData CorrectionData ManagementDebuggingEmulationEmulator DevelopmentGame DevelopmentGame EmulationInput MappingReverse Engineeringemulationemulator developmentgame development
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