mamedev/mame
Aug 2025 – Feb 2026
4 Months active
Languages Used
C++
Technical Skills
Code CorrectionCode MaintenanceData ManagementEmulationEmulator DevelopmentGame Development
sjy555525
PROFILE
Sjy555525
Over four months, this developer contributed to the mamedev/mame repository by enhancing metadata accuracy and input handling for arcade game emulation. They delivered targeted C++ driver-level patches to correct game titles, region descriptions, and licensing data, improving catalog integrity and searchability. Their work included implementing explicit input mappings for games like Namco Race On! and Angler King, enabling accurate joystick and pedal controls. They also resolved startup reliability issues by correcting NVRAM data and checksums. Demonstrating skills in C++ programming, code maintenance, and debugging, the developer’s contributions improved emulator reliability, user experience, and long-term maintainability across multiple modules.
Overall Statistics
Feature vs Bugs
33%Features
Repository Contributions
9Total
Bugs
4
Commits
9
Features
2
Lines of code
276
Activity Months4
Your Network
106 peopleWork History
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.
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
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.
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.
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.
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
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.
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.
Activity
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Quality Metrics
Correctness95.6%
Maintainability95.6%
Architecture91.0%
Performance91.0%
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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