
Over a three-month period, Uncle Petros contributed to the mamedev/mame repository by developing new gameplay features and resolving input and configuration bugs in C++. He implemented bonus life settings for Newpuc2 and Newpuc2b variants, enhancing gameplay customization and aligning emulation with original arcade logic. His work included correcting DIP switch input mappings for 4enraya and exprraid, ensuring hardware-accurate configuration and reducing user misconfiguration. Additionally, he fixed inverted joystick input mapping in bsharkjjs, improving player movement accuracy. These contributions demonstrated proficiency in emulator development, input handling, and reverse engineering, with clear commit traceability and a focus on maintainable, hardware-accurate solutions.
November 2025 — Delivered a focused feature for mamedev/mame: new Bonus Life settings for the Newpuc2 and Newpuc2b variants, paired with a targeted DIP-switch (DSW) fix to ensure accurate and reliable bonus-life behavior. The change was implemented through commit e456d42ee2888ca038a24485431bfbf4f9d07320, addressing issue #14539. This work enhances gameplay customization, improves emulation fidelity, and reduces user-reported edge cases, delivering business value through better player experience and maintainability.
November 2025 — Delivered a focused feature for mamedev/mame: new Bonus Life settings for the Newpuc2 and Newpuc2b variants, paired with a targeted DIP-switch (DSW) fix to ensure accurate and reliable bonus-life behavior. The change was implemented through commit e456d42ee2888ca038a24485431bfbf4f9d07320, addressing issue #14539. This work enhances gameplay customization, improves emulation fidelity, and reduces user-reported edge cases, delivering business value through better player experience and maintainability.
January 2025 (2025-01): Delivered focused DIP switch input mapping corrections for arcade hardware in mamedev/mame, with emphasis on 4enraya and exprraid. Corrected mappings and labels to ensure difficulty, speed, cabinet, and miscellaneous switch configurations reflect hardware precisely, improving attract mode reliability and gameplay accuracy. Implemented UI fixes for DIP switch display and clarified labeling on bit 1 (0x02). The work reduces configuration errors and enhances emulation fidelity.
January 2025 (2025-01): Delivered focused DIP switch input mapping corrections for arcade hardware in mamedev/mame, with emphasis on 4enraya and exprraid. Corrected mappings and labels to ensure difficulty, speed, cabinet, and miscellaneous switch configurations reflect hardware precisely, improving attract mode reliability and gameplay accuracy. Implemented UI fixes for DIP switch display and clarified labeling on bit 1 (0x02). The work reduces configuration errors and enhances emulation fidelity.
December 2024 monthly summary focusing on stabilizing input reliability in mamedev/mame. Implemented and committed a fix for inverted Left/Right joystick mapping in the bsharkjjs build, improving player movement accuracy and overall gameplay experience. The change references commit b9c52cc0cd21a1ba71000d5e734e846898b0bfa3 and issue #13115, contributing to higher reliability and user satisfaction across arcade emulation builds. Demonstrated strong debugging, precise commit messaging, and effective traceability for future maintenance.
December 2024 monthly summary focusing on stabilizing input reliability in mamedev/mame. Implemented and committed a fix for inverted Left/Right joystick mapping in the bsharkjjs build, improving player movement accuracy and overall gameplay experience. The change references commit b9c52cc0cd21a1ba71000d5e734e846898b0bfa3 and issue #13115, contributing to higher reliability and user satisfaction across arcade emulation builds. Demonstrated strong debugging, precise commit messaging, and effective traceability for future maintenance.

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