mamedev/mame
Nov 2024 – Apr 2026
16 Months active
Languages Used
C++CMAME Layout LanguageXMLAssembly
Technical Skills
EmulationEmulation DevelopmentGame DevelopmentGame PreservationReverse EngineeringConfiguration Management
Roberto Fresca
PROFILE
Roberto Fresca
Roberto Fresca contributed to the mamedev/mame repository by engineering and refining arcade hardware emulation, focusing on expanding support for new and legacy game systems. He developed and maintained drivers in C++ and Assembly, implementing accurate memory mapping, input handling, and graphics decoding to ensure faithful reproduction of original hardware behavior. His work included integrating NVRAM, DIP-switch configuration, and ROM management, as well as documenting hardware specifications and debugging workflows. By consolidating code, improving maintainability, and broadening clone and regional coverage, Roberto enabled more reliable, testable, and accessible emulation, supporting both preservation goals and ongoing development within the MAME project.
Overall Statistics
Feature vs Bugs
76%Features
Repository Contributions
397Total
Bugs
44
Commits
397
Features
138
Lines of code
50,575
Activity Months16
Your Network
106 peopleWork History
April 2026
10 Commits • 4 Features
Apr 1, 2026April 2026 monthly summary for mamedev/mame focusing on business value and technical achievements. Delivered regional ROM support and enhanced graphics/packaging, expanded catalog with new ROM sets, and improved code maintainability across multiple drivers. The work strengthens platform reliability, increases emulator accuracy for Canadian releases, and broadens user-accessible content while reducing future technical debt.
10 Commits • 4 Features
Apr 1, 2026April 2026 monthly summary for mamedev/mame focusing on business value and technical achievements. Delivered regional ROM support and enhanced graphics/packaging, expanded catalog with new ROM sets, and improved code maintainability across multiple drivers. The work strengthens platform reliability, increases emulator accuracy for Canadian releases, and broadens user-accessible content while reducing future technical debt.
April 2026
February 2026
4 Commits • 2 Features
Feb 1, 2026February 2026: Expanded bootleg ROM support and documentation for mamedev/mame, focusing on Lucky 8 Lines and Cherry Bonus III / Dottori Kun hardware notes. Delivered a new encrypted bootleg variant with refined initialization and DIP-switch handling, improved DIP-switch configuration for compatibility with new ROMs, and enhanced hardware documentation and ASCII PCB layouts to accelerate debugging and onboarding. Result: broader emulation coverage, improved testing reliability, and stronger contributor support.
February 2026
4 Commits • 2 Features
Feb 1, 2026February 2026: Expanded bootleg ROM support and documentation for mamedev/mame, focusing on Lucky 8 Lines and Cherry Bonus III / Dottori Kun hardware notes. Delivered a new encrypted bootleg variant with refined initialization and DIP-switch handling, improved DIP-switch configuration for compatibility with new ROMs, and enhanced hardware documentation and ASCII PCB layouts to accelerate debugging and onboarding. Result: broader emulation coverage, improved testing reliability, and stronger contributor support.
January 2026
5 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for mamedev/mame: Focused on Cherry Bonus III CB3 emulation work and related documentation. Delivered ROM definitions for ver.3.0 and ver.2.20, refined ROM loading and memory mapping, and produced hardware specifications documentation. Documented non-working clones and release-date notes to improve accuracy, maintainability, and user-facing reliability. Implemented partial descrambling for CB3 programs (ver.3.0 and ver.2.20) with added technical documentation. These activities improve emulation fidelity, reduce future maintenance costs, and support smoother integration of CB3 into future releases.
5 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for mamedev/mame: Focused on Cherry Bonus III CB3 emulation work and related documentation. Delivered ROM definitions for ver.3.0 and ver.2.20, refined ROM loading and memory mapping, and produced hardware specifications documentation. Documented non-working clones and release-date notes to improve accuracy, maintainability, and user-facing reliability. Implemented partial descrambling for CB3 programs (ver.3.0 and ver.2.20) with added technical documentation. These activities improve emulation fidelity, reduce future maintenance costs, and support smoother integration of CB3 into future releases.
January 2026
December 2025
82 Commits • 16 Features
Dec 1, 2025December 2025 was focused on expanding hardware emulation fidelity and growing the corpus of working arcade clones in mamedev/mame, with an emphasis on Cherry Master '99 and Flaming 7's families. Key engineering work included boot sequencing and ROM banking improvements, UI enhancements for easier setup, hardware-set reorganization for Dyna El Dorado, and extensive clone provisioning across Flaming 7's GS01–GS39 and beyond. Documentation and status-tracking were also advanced, enabling future work and reducing maintenance risk.
December 2025
82 Commits • 16 Features
Dec 1, 2025December 2025 was focused on expanding hardware emulation fidelity and growing the corpus of working arcade clones in mamedev/mame, with an emphasis on Cherry Master '99 and Flaming 7's families. Key engineering work included boot sequencing and ROM banking improvements, UI enhancements for easier setup, hardware-set reorganization for Dyna El Dorado, and extensive clone provisioning across Flaming 7's GS01–GS39 and beyond. Documentation and status-tracking were also advanced, enabling future work and reducing maintenance risk.
November 2025
30 Commits • 13 Features
Nov 1, 2025November 2025 focused on expanding working coverage and fidelity across the Cherry Master family and related hardware in mamedev/mame. Major achievements include bootleg hardware improvements for Cherry Master 97 with Double Up DIP switch support and comprehensive machine-config refinements; expanded clone support with Super Cherry Master (v1.1) and new Cherry '98/'96 variants promoted to working; hardware/config modernization across IGS Goldstar, Amaztsk, and Star100 with unified configs and corrected DIP banks; extensive hardware and input improvements for the animalhs/eldo family (including new video/tilemap support, updated inputs and registers, and DIP polishing) with multiple clones promoted; Flaming 7/Special 7 family enhancements including video start, hopper/remote pay support, and new working clones; and Cherry Bonus III improvements with memory map adjustments and UI/DIP updates. Lucky 8 reels colors bug fix addressed as part of targeted stability work.
30 Commits • 13 Features
Nov 1, 2025November 2025 focused on expanding working coverage and fidelity across the Cherry Master family and related hardware in mamedev/mame. Major achievements include bootleg hardware improvements for Cherry Master 97 with Double Up DIP switch support and comprehensive machine-config refinements; expanded clone support with Super Cherry Master (v1.1) and new Cherry '98/'96 variants promoted to working; hardware/config modernization across IGS Goldstar, Amaztsk, and Star100 with unified configs and corrected DIP banks; extensive hardware and input improvements for the animalhs/eldo family (including new video/tilemap support, updated inputs and registers, and DIP polishing) with multiple clones promoted; Flaming 7/Special 7 family enhancements including video start, hopper/remote pay support, and new working clones; and Cherry Bonus III improvements with memory map adjustments and UI/DIP updates. Lucky 8 reels colors bug fix addressed as part of targeted stability work.
November 2025
October 2025
50 Commits • 18 Features
Oct 1, 2025October 2025 monthly summary for mamedev/mame: Implemented substantial core improvements and new features across multiple arcade cores, focused on system stability, accurate hardware mapping, and expanded configurability. Major work delivered on Wild Cat, Wing, and New Draw 8 Lines families, plus Cherry Bonus lineage, enabling more titles to work or reach higher fidelity. Achievements include comprehensive Wing W-8/W-6 revamps, Wild Cat DIP-switch integration and input handling, enhanced color/graphics decoding, and broader DIP-switch configurability that expands the playable catalog and improves end-user experience. Numerous ROM/NVRAM fixes and initialization work reduced regressions and improved reliability across titles.
October 2025
50 Commits • 18 Features
Oct 1, 2025October 2025 monthly summary for mamedev/mame: Implemented substantial core improvements and new features across multiple arcade cores, focused on system stability, accurate hardware mapping, and expanded configurability. Major work delivered on Wild Cat, Wing, and New Draw 8 Lines families, plus Cherry Bonus lineage, enabling more titles to work or reach higher fidelity. Achievements include comprehensive Wing W-8/W-6 revamps, Wild Cat DIP-switch integration and input handling, enhanced color/graphics decoding, and broader DIP-switch configurability that expands the playable catalog and improves end-user experience. Numerous ROM/NVRAM fixes and initialization work reduced regressions and improved reliability across titles.
September 2025
60 Commits • 28 Features
Sep 1, 2025September 2025 (2025-09) performance summary for mamedev/mame: In this month, the team delivered extensive driver and emulation enhancements across Goldstar-based hardware, expanded playable clones, and robust UI/data handlings that improve playability, correctness, and stability. The standout work centers on a comprehensive overhaul of the Goldstar.cpp driver, new working clones, and large-scale input/mapping and protection work that expands the playable library while preserving arcade accuracy. Key business value comes from higher fidelity emulation, reduced crash surfaces, and more reliable color, sound, and input behavior across a broad set of titles. Impact areas include driver modernization, protection bypass strategies, machine configurations, memory maps, color and palette handling, OKI sound integration, NVRAM handling, and user interface improvements.
60 Commits • 28 Features
Sep 1, 2025September 2025 (2025-09) performance summary for mamedev/mame: In this month, the team delivered extensive driver and emulation enhancements across Goldstar-based hardware, expanded playable clones, and robust UI/data handlings that improve playability, correctness, and stability. The standout work centers on a comprehensive overhaul of the Goldstar.cpp driver, new working clones, and large-scale input/mapping and protection work that expands the playable library while preserving arcade accuracy. Key business value comes from higher fidelity emulation, reduced crash surfaces, and more reliable color, sound, and input behavior across a broad set of titles. Impact areas include driver modernization, protection bypass strategies, machine configurations, memory maps, color and palette handling, OKI sound integration, NVRAM handling, and user interface improvements.
September 2025
August 2025
59 Commits • 19 Features
Aug 1, 2025August 2025 saw a focused push to expand emulation coverage for mamedev/mame while tightening input handling, graphics fidelity, and system stability. Delivered multiple new working poker systems and clones, refined hardware configurations (Lucky 8 Lines and Goldstar), integrated advanced input and DIP switch mappings (autohold, coinage, multipliers), improved color decoding and PROM handling, and provided thorough platform documentation. These efforts broaden playable titles, improve user experience, reduce maintenance overhead, and strengthen the project’s preservation value.
August 2025
59 Commits • 19 Features
Aug 1, 2025August 2025 saw a focused push to expand emulation coverage for mamedev/mame while tightening input handling, graphics fidelity, and system stability. Delivered multiple new working poker systems and clones, refined hardware configurations (Lucky 8 Lines and Goldstar), integrated advanced input and DIP switch mappings (autohold, coinage, multipliers), improved color decoding and PROM handling, and provided thorough platform documentation. These efforts broaden playable titles, improve user experience, reduce maintenance overhead, and strengthen the project’s preservation value.
July 2025
12 Commits • 5 Features
Jul 1, 2025Concise monthly summary for 2025-07 focusing on key features delivered, major bug fixes, overall impact, and technologies demonstrated in mamedev/mame. Delivered bootleg Dogyuun support and accuracy improvements, Unknown YungYu system addition with ROM corrections, ICP F40/F80 poker enhancements, Wing W90/W90-3 updates, and maintenance documentation/cleanup; these changes increase platform coverage, ROM integrity, and emulation fidelity, delivering tangible business value to developers and testers.
12 Commits • 5 Features
Jul 1, 2025Concise monthly summary for 2025-07 focusing on key features delivered, major bug fixes, overall impact, and technologies demonstrated in mamedev/mame. Delivered bootleg Dogyuun support and accuracy improvements, Unknown YungYu system addition with ROM corrections, ICP F40/F80 poker enhancements, Wing W90/W90-3 updates, and maintenance documentation/cleanup; these changes increase platform coverage, ROM integrity, and emulation fidelity, delivering tangible business value to developers and testers.
July 2025
May 2025
16 Commits • 4 Features
May 1, 2025May 2025 monthly summary for mamedev/mame: Delivered targeted driver enhancements and new system variants to improve emulation fidelity, broaden hardware coverage, and support maintainability. Key work centered on Shanghai 2000/2001, Carrera/NCarrera, and Poker/Draw Poker families, complemented by merit/documentation cleanup. Results include deeper DIP-switch accuracy, corrected color palettes, NVRAM support, MCU-based driver for Carrera 2000, expanded ROM mappings, and comprehensive technical notes, enabling more playable content and clearer future development.
May 2025
16 Commits • 4 Features
May 1, 2025May 2025 monthly summary for mamedev/mame: Delivered targeted driver enhancements and new system variants to improve emulation fidelity, broaden hardware coverage, and support maintainability. Key work centered on Shanghai 2000/2001, Carrera/NCarrera, and Poker/Draw Poker families, complemented by merit/documentation cleanup. Results include deeper DIP-switch accuracy, corrected color palettes, NVRAM support, MCU-based driver for Carrera 2000, expanded ROM mappings, and comprehensive technical notes, enabling more playable content and clearer future development.
April 2025
17 Commits • 8 Features
Apr 1, 2025April 2025 monthly summary for mamedev/mame. Focused on delivering feature-rich driver work, expanding game coverage, and enhancing hardware fidelity, while improving maintainability and testability across the codebase. Key outcomes demonstrate strong business value through broader emulation, more reliable configurations, and enables future development with reusable patterns.
17 Commits • 8 Features
Apr 1, 2025April 2025 monthly summary for mamedev/mame. Focused on delivering feature-rich driver work, expanding game coverage, and enhancing hardware fidelity, while improving maintainability and testability across the codebase. Key outcomes demonstrate strong business value through broader emulation, more reliable configurations, and enables future development with reusable patterns.
April 2025
March 2025
18 Commits • 4 Features
Mar 1, 2025Consolidated and delivered major driver enhancements in mamedev/mame during March 2025. Key features include the Challenger Draw Poker and 5-Aces Poker support in the vpoker driver with stability and I/O improvements, graphics and palette refinements in the MagicFly driver (Bonne Chance and 7mezzo), comprehensive Naroutp/Norautp driver consolidation with new palettes, inputs, DIP switches, i8080 transitions, and several sets promoted to working, and the Paracaidista driver evolving from skeleton to a fully functional implementation with memory/port mappings, PPI hookup, graphics decoding, and video update routines. These changes increase playable content, improve hardware accuracy, fix long-standing NMI/NVRAM issues, and improve screen refresh and palette fidelity, delivering clearer value to players and lowering future maintenance overhead while expanding the platform's footprint.
March 2025
18 Commits • 4 Features
Mar 1, 2025Consolidated and delivered major driver enhancements in mamedev/mame during March 2025. Key features include the Challenger Draw Poker and 5-Aces Poker support in the vpoker driver with stability and I/O improvements, graphics and palette refinements in the MagicFly driver (Bonne Chance and 7mezzo), comprehensive Naroutp/Norautp driver consolidation with new palettes, inputs, DIP switches, i8080 transitions, and several sets promoted to working, and the Paracaidista driver evolving from skeleton to a fully functional implementation with memory/port mappings, PPI hookup, graphics decoding, and video update routines. These changes increase playable content, improve hardware accuracy, fix long-standing NMI/NVRAM issues, and improve screen refresh and palette fidelity, delivering clearer value to players and lowering future maintenance overhead while expanding the platform's footprint.
February 2025
6 Commits • 3 Features
Feb 1, 2025February 2025: Delivered major hardware-emulation improvements across Truco-Tron, Video Poker/ Fortune I, and Draw 80 Poker/Wild 1. Implemented NVRAM support and enhanced input handling, integrated timekeeper and watchdog, and refined CPU/I/O models. All work includes extensive documentation and alignment toward a more accurate, playable, and maintainable emulation.
6 Commits • 3 Features
Feb 1, 2025February 2025: Delivered major hardware-emulation improvements across Truco-Tron, Video Poker/ Fortune I, and Draw 80 Poker/Wild 1. Implemented NVRAM support and enhanced input handling, integrated timekeeper and watchdog, and refined CPU/I/O models. All work includes extensive documentation and alignment toward a more accurate, playable, and maintainable emulation.
February 2025
January 2025
17 Commits • 8 Features
Jan 1, 2025January 2025 focused on expanding hardware driver coverage and improving maintainability across the MAME codebase in mamedev/mame. Major work delivered includes enhancements to the Golden Poker driver, integration of Code Magik and Super 7 support with driver relocation and new machine configurations, and core refinements to Le Pendu graphics and inputs. Targeted fixes and comprehensive documentation were also produced to support reliability and future development.
January 2025
17 Commits • 8 Features
Jan 1, 2025January 2025 focused on expanding hardware driver coverage and improving maintainability across the MAME codebase in mamedev/mame. Major work delivered includes enhancements to the Golden Poker driver, integration of Code Magik and Super 7 support with driver relocation and new machine configurations, and core refinements to Le Pendu graphics and inputs. Targeted fixes and comprehensive documentation were also produced to support reliability and future development.
December 2024
9 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for mamedev/mame: Delivered substantial ICP-1 arcade title support and ROM/data updates, expanding emulator compatibility and reliability. Implemented Roulette (ICP-1 PCB) support; added fever-enabled variants of Jack Potten's Poker with ICP-1 clones; introduced Golden Poker Double Up tearoom*sara hack clone; updated Goldnpkr data/ROMs with corrected set lists, improved inputs, and ROM-loading fixes. Fixed core ROM-loading and input/DIP handling issues to improve accuracy and playability. These changes extend catalog coverage, improve hardware fidelity, and reduce user-facing issues, delivering measurable business value by broadening the emulator's arcade ecosystem and supporting more complete provenance for ROM sets.
9 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for mamedev/mame: Delivered substantial ICP-1 arcade title support and ROM/data updates, expanding emulator compatibility and reliability. Implemented Roulette (ICP-1 PCB) support; added fever-enabled variants of Jack Potten's Poker with ICP-1 clones; introduced Golden Poker Double Up tearoom*sara hack clone; updated Goldnpkr data/ROMs with corrected set lists, improved inputs, and ROM-loading fixes. Fixed core ROM-loading and input/DIP handling issues to improve accuracy and playability. These changes extend catalog coverage, improve hardware fidelity, and reduce user-facing issues, delivering measurable business value by broadening the emulator's arcade ecosystem and supporting more complete provenance for ROM sets.
December 2024
November 2024
2 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for mamedev/mame: Expanded arcade clone catalog with two new clones added to the ROM library and prepared for ongoing refinement. Makaimura (Japan Revision B, alt GFX) was added with ROM definitions and an updated game list, marked as a working clone. Super Real Darwin bootleg (Japan) was added with ROM definitions and an init function for sprite ROM byte swapping, but is currently marked not working to reflect ongoing development. These changes broaden catalog coverage, improve discoverability for users, and lay groundwork for future fixes and enhancements. No major bug fixes were recorded for this repository this month. Contributions came from Roberto Fresca, Gabriel Vega (El Pampa), Emmanuel Firmapaz, and the Club Argentino de Arcades, with commits detailing the new clones.
November 2024
2 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for mamedev/mame: Expanded arcade clone catalog with two new clones added to the ROM library and prepared for ongoing refinement. Makaimura (Japan Revision B, alt GFX) was added with ROM definitions and an updated game list, marked as a working clone. Super Real Darwin bootleg (Japan) was added with ROM definitions and an init function for sprite ROM byte swapping, but is currently marked not working to reflect ongoing development. These changes broaden catalog coverage, improve discoverability for users, and lay groundwork for future fixes and enhancements. No major bug fixes were recorded for this repository this month. Contributions came from Roberto Fresca, Gabriel Vega (El Pampa), Emmanuel Firmapaz, and the Club Argentino de Arcades, with commits detailing the new clones.
Activity
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Quality Metrics
Correctness89.8%
Maintainability86.8%
Architecture85.8%
Performance80.6%
AI Usage20.4%
Skills & Technologies
Programming Languages
AssemblyCC++MAME Layout LanguageXML
Technical Skills
Arcade Game DevelopmentArcade Game PreservationArcade System AnalysisAssembly LanguageAssembly Language (implied)Audio EmulationAudio Hardware ConfigurationBug FixingBuild SystemBuild System ConfigurationBuild System ManagementC++C++ DevelopmentC++ ProgrammingC++ development
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