mamedev/mame
Dec 2024 – Feb 2026
5 Months active
Languages Used
C++
Technical Skills
Embedded SystemsEmulationReverse EngineeringSystem ArchitectureSystem EmulationDocumentation
Sergio G.
PROFILE
Sergio G.
Sergio Polog contributed to the mamedev/mame repository by developing and refining features for arcade system emulation, focusing on hardware fidelity and maintainability. He implemented microcontroller emulation for Mega System 1’s Earth Defense Force, improved ROM loading stability by deduplicating PROM definitions, and expanded support for new arcade variants such as EDF Set 3 and Doraemon Slot. Using C++ and leveraging skills in embedded systems, reverse engineering, and documentation, Sergio enhanced code clarity by updating MCU references to actual filenames and added traceability notes for undumped game versions. His work demonstrated depth in system architecture and careful attention to long-term maintainability.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
7Total
Bugs
2
Commits
7
Features
4
Lines of code
734
Activity Months5
Your Network
106 peopleWork History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered a targeted improvement in mamedev/mame by updating ROM_LOAD MCU references to actual filenames, improving clarity, maintenance, and debugging. Key commit 06006dcddebe5c599eda7e714a84c444bae4ad1f. No major bugs fixed this month; overall impact is increased accuracy of MCU mappings and streamlined future work. Technologies demonstrated include C++, ROM loading logic, and precise code documentation.
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered a targeted improvement in mamedev/mame by updating ROM_LOAD MCU references to actual filenames, improving clarity, maintenance, and debugging. Key commit 06006dcddebe5c599eda7e714a84c444bae4ad1f. No major bugs fixed this month; overall impact is increased accuracy of MCU mappings and streamlined future work. Technologies demonstrated include C++, ROM loading logic, and precise code documentation.
February 2026
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Focused delivery on expanding MAME's arcade variant support in mamedev/mame. Key features completed include EDF Set 3 ROM support and Doraemon Slot integration, with new machine configurations, input ports, and ROM loading. These changes broaden the emulator's library by unifying two user-facing expansions and improving coverage of Earth Defense Force and Doraemon Slot variants. Noted that the MCU for the 'peekaboo' game is present but not hooked up due to a different connection scheme, representing a potential future task. The work demonstrates capabilities in C++ driver code, ROM set management, and cross-driver integration, contributing to enhanced accuracy and user value for arcade emulation.
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Focused delivery on expanding MAME's arcade variant support in mamedev/mame. Key features completed include EDF Set 3 ROM support and Doraemon Slot integration, with new machine configurations, input ports, and ROM loading. These changes broaden the emulator's library by unifying two user-facing expansions and improving coverage of Earth Defense Force and Doraemon Slot variants. Noted that the MCU for the 'peekaboo' game is present but not hooked up due to a different connection scheme, representing a potential future task. The work demonstrates capabilities in C++ driver code, ROM set management, and cross-driver integration, contributing to enhanced accuracy and user value for arcade emulation.
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025: Documentation-focused contribution for mamedev/mame. Added an informational in-code note in raizing_batrider.cpp about the existence of an undumped Hong Kong version of Battle Bakraid, with a reference video. No code logic changes.
1 Commits • 1 Features
Aug 1, 2025August 2025: Documentation-focused contribution for mamedev/mame. Added an informational in-code note in raizing_batrider.cpp about the existence of an undumped Hong Kong version of Battle Bakraid, with a reference video. No code logic changes.
August 2025
July 2025
1 Commits
Jul 1, 2025July 2025 focused on stabilizing ROM definitions in the mamedev/mame repository by deduplicating ROM PROM entries to prevent conflicts and ensure each PROM is defined only once in nmk16.cpp. This targeted fix reduces ROM conflicts during initialization, improves ROM loading reliability, and enhances maintainability of the ROM data model. Key outcomes include a single source of truth for PROM definitions and a reduction in runtime issues related to ROM conflicts. Technologies demonstrated include C++ code cleanup, ROM data structure analysis, and git-based change management (commit caa849c9e2e4b6dda5a3123a485d671ff7404ac7).
July 2025
1 Commits
Jul 1, 2025July 2025 focused on stabilizing ROM definitions in the mamedev/mame repository by deduplicating ROM PROM entries to prevent conflicts and ensure each PROM is defined only once in nmk16.cpp. This targeted fix reduces ROM conflicts during initialization, improves ROM loading reliability, and enhances maintainability of the ROM data model. Key outcomes include a single source of truth for PROM definitions and a reduction in runtime issues related to ROM conflicts. Technologies demonstrated include C++ code cleanup, ROM data structure analysis, and git-based change management (commit caa849c9e2e4b6dda5a3123a485d671ff7404ac7).
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for mamedev/mame focusing on Mega System 1 EDF microcontroller emulation and System B I/O timing fixes. Delivered targeted emulation enhancements that improve hardware fidelity, gameplay stability, and maintainability across Mega System 1 variants, reducing divergence from real hardware and lowering risk for future updates.
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for mamedev/mame focusing on Mega System 1 EDF microcontroller emulation and System B I/O timing fixes. Delivered targeted emulation enhancements that improve hardware fidelity, gameplay stability, and maintainability across Mega System 1 variants, reducing divergence from real hardware and lowering risk for future updates.
December 2024
Activity
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Quality Metrics
Correctness92.8%
Maintainability91.4%
Architecture92.8%
Performance85.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++C++ programmingDocumentationEmbedded SystemsEmulationGame EmulationROM HackingReverse EngineeringSystem ArchitectureSystem Emulationembedded systemsgame development
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