mamedev/mame
Nov 2024 – Apr 2026
17 Months active
Languages Used
AssemblyC++Lua
Technical Skills
Arcade Game DevelopmentAssemblyC++Code RefactoringCodebase MaintenanceDocumentation
ClawGrip
PROFILE
Clawgrip
Clawgrip contributed to the mamedev/mame repository by expanding arcade and hardware emulation coverage, building new drivers, and integrating a wide range of ROM variants and bootleg support. Using C++ and Assembly, Clawgrip developed skeleton drivers, implemented hardware configurations, and maintained data integrity through careful ROM management and documentation. Their work included adding support for legacy systems, refining emulation accuracy, and improving metadata for future maintainability. By focusing on code quality, version control, and cross-platform compatibility, Clawgrip enabled broader testing and preservation of arcade systems, demonstrating depth in reverse engineering, embedded systems, and emulator development across diverse hardware targets.
Overall Statistics
Feature vs Bugs
90%Features
Repository Contributions
159Total
Bugs
10
Commits
159
Features
91
Lines of code
20,885
Activity Months17
Your Network
106 peopleWork History
April 2026
5 Commits • 1 Features
Apr 1, 2026April 2026: Expanded MAME library with new games and hardware support, corrected BIOS versioning, and improved testing visibility. Delivered concrete features and patches that broaden emulation coverage, enhance accuracy, and support future debugging efforts.
5 Commits • 1 Features
Apr 1, 2026April 2026: Expanded MAME library with new games and hardware support, corrected BIOS versioning, and improved testing visibility. Delivered concrete features and patches that broaden emulation coverage, enhance accuracy, and support future debugging efforts.
April 2026
March 2026
7 Commits • 5 Features
Mar 1, 2026March 2026 performance for mamedev/mame: delivered substantial expansion of emulator coverage across pinball, arcade variants, and hardware emulation, while improving accuracy and metadata. Key deliveries include licensed pinball content, new arcade variants, and supportive hardware features, complemented by an accuracy fix to clone lineage.
March 2026
7 Commits • 5 Features
Mar 1, 2026March 2026 performance for mamedev/mame: delivered substantial expansion of emulator coverage across pinball, arcade variants, and hardware emulation, while improving accuracy and metadata. Key deliveries include licensed pinball content, new arcade variants, and supportive hardware features, complemented by an accuracy fix to clone lineage.
February 2026
5 Commits • 2 Features
Feb 1, 2026February 2026 monthly summary for mamedev/mame: Expanded arcade catalog with new region/ROM variations and advanced emulation infrastructure to broaden playable options and improve maintainability. The work enhances content diversity, showcases cross-repo collaboration, and lays groundwork for future platform variants.
5 Commits • 2 Features
Feb 1, 2026February 2026 monthly summary for mamedev/mame: Expanded arcade catalog with new region/ROM variations and advanced emulation infrastructure to broaden playable options and improve maintainability. The work enhances content diversity, showcases cross-repo collaboration, and lays groundwork for future platform variants.
February 2026
January 2026
2 Commits • 2 Features
Jan 1, 2026Concise monthly summary for 2026-01 focusing on key accomplishments, major bugs fixed, impact, and skills demonstrated. Work concentrated on expanding arcade hardware compatibility in mamedev/mame with a new Revolution X ROM set and a foundational skeleton driver for Sea Wolf - Next Mission.
January 2026
2 Commits • 2 Features
Jan 1, 2026Concise monthly summary for 2026-01 focusing on key accomplishments, major bugs fixed, impact, and skills demonstrated. Work concentrated on expanding arcade hardware compatibility in mamedev/mame with a new Revolution X ROM set and a foundational skeleton driver for Sea Wolf - Next Mission.
December 2025
2 Commits • 2 Features
Dec 1, 2025December 2025: mamedev/mame focused on maintainability improvements and regional feature groundwork. Highlights include Progear Europe 010117 support (ROM definitions and metadata added; currently not working due to a missing decryption key) and CoolFire hardware documentation clarification in gamtor.cpp (formatting fixes, typos, and dip-switch details). No user-facing bug fixes this month; the changes reduce onboarding time and lay the groundwork for future cryptographic key integration and Europe region expansion. Technologies demonstrated: C/C++, ROM/metadata management, and documentation craftsmanship, aligning with business goals of faster maintenance and scalable regional coverage.
2 Commits • 2 Features
Dec 1, 2025December 2025: mamedev/mame focused on maintainability improvements and regional feature groundwork. Highlights include Progear Europe 010117 support (ROM definitions and metadata added; currently not working due to a missing decryption key) and CoolFire hardware documentation clarification in gamtor.cpp (formatting fixes, typos, and dip-switch details). No user-facing bug fixes this month; the changes reduce onboarding time and lay the groundwork for future cryptographic key integration and Europe region expansion. Technologies demonstrated: C/C++, ROM/metadata management, and documentation craftsmanship, aligning with business goals of faster maintenance and scalable regional coverage.
December 2025
October 2025
6 Commits • 3 Features
Oct 1, 2025October 2025 (2025-10) monthly summary for mamedev/mame: Delivered foundational emulation scaffolding and data improvements across legacy hardware support. Key deliverables include: integration scaffolding for Compumatic Champion darts arcade system (config and ROM loading scaffolding; system marked not working pending further emulation development). Added ROM data support: completed intlc8m80 ROM loading with CRC; introduced GAL dump for cueballv to support hardware logic. Created skeleton drivers for three legacy platforms (Itisa Flash Gun, ICE Full Court Fever, Sun Enterprise 250) with basic config and ROM scaffolding; all are non-functional but set the stage for future work.
October 2025
6 Commits • 3 Features
Oct 1, 2025October 2025 (2025-10) monthly summary for mamedev/mame: Delivered foundational emulation scaffolding and data improvements across legacy hardware support. Key deliverables include: integration scaffolding for Compumatic Champion darts arcade system (config and ROM loading scaffolding; system marked not working pending further emulation development). Added ROM data support: completed intlc8m80 ROM loading with CRC; introduced GAL dump for cueballv to support hardware logic. Created skeleton drivers for three legacy platforms (Itisa Flash Gun, ICE Full Court Fever, Sun Enterprise 250) with basic config and ROM scaffolding; all are non-functional but set the stage for future work.
September 2025
6 Commits • 6 Features
Sep 1, 2025September 2025 (mamedev/mame) — Expanded emulator coverage and documentation, delivering several high-value features and ROM data updates while laying groundwork for future functionality. No major bugs reported as fixed in this period; several items are work-in-progress or skeletons that enable rapid development and integration of additional hardware variants. Key features delivered: - Space King II bootleg support: added ROMs and configuration, updating mame.lst and mw8080bw.cpp to widen Space Invaders II variant compatibility. Commit: d2977de3ba57dfb6f798209efaa2c1cd029b571e - Criterium 75 pinball skeleton driver: new skeleton driver and mame.lst entry to kick off emulation work. Commit: b665d036ade6bd7879b43fd94b504964efb048ee - IBM ThinkPad 600X/760XD/770Z support: multi-model laptop entries with hardware info and ROM loading scaffolding (not fully functional yet). Commit: 8283606244cae4db66ee9e423958e425ba910de9 - Monster Maulers (ver UAA) game support: ROMs and configuration added to mystwarr.cpp. Commit: e1f553c12c4425bfa085142042cf1929125ac74f - Macintosh XL ROM data update and cleanup: video ROM information refreshed and comments refactored to C++ style; ROM loading filenames adjusted. Commit: 7eb5bff1b4dc0c1ab3e11c1efa10b505319b3c17 - Documentation: NWS-1250 note documenting mouse MCU type for Sony setups. Commit: 3e992f92dcb34567445ccb8c77632d4224621ef4
6 Commits • 6 Features
Sep 1, 2025September 2025 (mamedev/mame) — Expanded emulator coverage and documentation, delivering several high-value features and ROM data updates while laying groundwork for future functionality. No major bugs reported as fixed in this period; several items are work-in-progress or skeletons that enable rapid development and integration of additional hardware variants. Key features delivered: - Space King II bootleg support: added ROMs and configuration, updating mame.lst and mw8080bw.cpp to widen Space Invaders II variant compatibility. Commit: d2977de3ba57dfb6f798209efaa2c1cd029b571e - Criterium 75 pinball skeleton driver: new skeleton driver and mame.lst entry to kick off emulation work. Commit: b665d036ade6bd7879b43fd94b504964efb048ee - IBM ThinkPad 600X/760XD/770Z support: multi-model laptop entries with hardware info and ROM loading scaffolding (not fully functional yet). Commit: 8283606244cae4db66ee9e423958e425ba910de9 - Monster Maulers (ver UAA) game support: ROMs and configuration added to mystwarr.cpp. Commit: e1f553c12c4425bfa085142042cf1929125ac74f - Macintosh XL ROM data update and cleanup: video ROM information refreshed and comments refactored to C++ style; ROM loading filenames adjusted. Commit: 7eb5bff1b4dc0c1ab3e11c1efa10b505319b3c17 - Documentation: NWS-1250 note documenting mouse MCU type for Sony setups. Commit: 3e992f92dcb34567445ccb8c77632d4224621ef4
September 2025
August 2025
5 Commits • 2 Features
Aug 1, 2025August 2025 for mamedev/mame: Key features delivered and bug fixes focused on ROM data accuracy, bootleg variant support, and initial hardware integration. Bootleg variants added for Tutankham and Rally X, including ROM definitions, ROM regions, and source updates. ROM data accuracy improvements for IP2700 and Goldart: added missing PLDs/PROMs, corrected IDPROM, clarified SRAM dump source, and removed BAD_DUMP flag for Goldart to improve fidelity. New hardware support added: Sony NEWS NWS-1250 in the system list (not working yet). Impact: improved emulation fidelity and broader hardware coverage; groundwork laid for full functionality in coming releases. Technologies demonstrated: ROM scripting/definitions, cross-file integration (konami/tutankhm.cpp, namco/rallyx.cpp, ip2700, gaelco/goldart.cpp, sony/news_68k.cpp).
August 2025
5 Commits • 2 Features
Aug 1, 2025August 2025 for mamedev/mame: Key features delivered and bug fixes focused on ROM data accuracy, bootleg variant support, and initial hardware integration. Bootleg variants added for Tutankham and Rally X, including ROM definitions, ROM regions, and source updates. ROM data accuracy improvements for IP2700 and Goldart: added missing PLDs/PROMs, corrected IDPROM, clarified SRAM dump source, and removed BAD_DUMP flag for Goldart to improve fidelity. New hardware support added: Sony NEWS NWS-1250 in the system list (not working yet). Impact: improved emulation fidelity and broader hardware coverage; groundwork laid for full functionality in coming releases. Technologies demonstrated: ROM scripting/definitions, cross-file integration (konami/tutankhm.cpp, namco/rallyx.cpp, ip2700, gaelco/goldart.cpp, sony/news_68k.cpp).
July 2025
7 Commits • 3 Features
Jul 1, 2025July 2025 performance summary for mamedev/mame focused on improving emulation fidelity and hardware data accuracy across multiple arcade systems. Delivered three main feature areas: Loto-Play emulation cleanup and hardware clarification, PLD/ROM data accuracy improvements, and a Blaupunkt CDS 32-ID terminal skeleton driver. Key impact includes removal of bad dumps, documentation of PIC-based Loto Play clock frequencies, comprehensive PLD/ROM data corrections and flash mappings, and a foundational driver for Blaupunkt terminal emulation. Demonstrated technologies and skills include C/C++ driver development, data validation (CRC/SHA1), ROM/PLD mapping, and cross-team collaboration with external contributors. Business value: higher emulation reliability, broader system coverage, reduced risk from invalid dumps, and accelerated roadmap for hardware-specific models.
7 Commits • 3 Features
Jul 1, 2025July 2025 performance summary for mamedev/mame focused on improving emulation fidelity and hardware data accuracy across multiple arcade systems. Delivered three main feature areas: Loto-Play emulation cleanup and hardware clarification, PLD/ROM data accuracy improvements, and a Blaupunkt CDS 32-ID terminal skeleton driver. Key impact includes removal of bad dumps, documentation of PIC-based Loto Play clock frequencies, comprehensive PLD/ROM data corrections and flash mappings, and a foundational driver for Blaupunkt terminal emulation. Demonstrated technologies and skills include C/C++ driver development, data validation (CRC/SHA1), ROM/PLD mapping, and cross-team collaboration with external contributors. Business value: higher emulation reliability, broader system coverage, reduced risk from invalid dumps, and accelerated roadmap for hardware-specific models.
July 2025
June 2025
24 Commits • 20 Features
Jun 1, 2025June 2025 performance summary focusing on delivering new features and data quality improvements across mamedev/mame. Delivered skeleton drivers, new hardware support, and data integrity updates, along with modular system enhancements that expand platform coverage and improve ROM/data accuracy. Demonstrated strong collaboration, code quality, and maintainability through targeted commits and documentation.
June 2025
24 Commits • 20 Features
Jun 1, 2025June 2025 performance summary focusing on delivering new features and data quality improvements across mamedev/mame. Delivered skeleton drivers, new hardware support, and data integrity updates, along with modular system enhancements that expand platform coverage and improve ROM/data accuracy. Demonstrated strong collaboration, code quality, and maintainability through targeted commits and documentation.
May 2025
37 Commits • 22 Features
May 1, 2025May 2025 monthly performance for mamedev/mame focused on expanding dataset coverage, validating data integrity, and delivering licensing-aware variants across multiple cores. The team migrated and cleaned ROM sets, introduced new hardware variants, and added prototype and driver support for modular systems, while strengthening verification and documentation for PROM/PLD data. The result is broader, more accurate emulation coverage, improved testability, and stronger alignment with licensing requirements for end users and contributors.
37 Commits • 22 Features
May 1, 2025May 2025 monthly performance for mamedev/mame focused on expanding dataset coverage, validating data integrity, and delivering licensing-aware variants across multiple cores. The team migrated and cleaned ROM sets, introduced new hardware variants, and added prototype and driver support for modular systems, while strengthening verification and documentation for PROM/PLD data. The result is broader, more accurate emulation coverage, improved testability, and stronger alignment with licensing requirements for end users and contributors.
May 2025
April 2025
4 Commits • 1 Features
Apr 1, 2025April 2025: Deliveries focused on ROM loading fidelity and expanded arcade game coverage for mamedev/mame, resulting in improved emulation accuracy and broader hardware-compatible game entries.
April 2025
4 Commits • 1 Features
Apr 1, 2025April 2025: Deliveries focused on ROM loading fidelity and expanded arcade game coverage for mamedev/mame, resulting in improved emulation accuracy and broader hardware-compatible game entries.
March 2025
18 Commits • 9 Features
Mar 1, 2025March 2025 (mamedev/mame): Expanded hardware emulation coverage and content by delivering extensive skeleton drivers across 11 hardware targets, adding Wizard Fire (Over Sea v1.0) support, and introducing multiple game variants and bootlegs. This work establishes a scalable foundation for future development, accelerates integration of new targets, and strengthens preservation and research capabilities while improving test coverage and contributor onboarding.
18 Commits • 9 Features
Mar 1, 2025March 2025 (mamedev/mame): Expanded hardware emulation coverage and content by delivering extensive skeleton drivers across 11 hardware targets, adding Wizard Fire (Over Sea v1.0) support, and introducing multiple game variants and bootlegs. This work establishes a scalable foundation for future development, accelerates integration of new targets, and strengthens preservation and research capabilities while improving test coverage and contributor onboarding.
March 2025
February 2025
8 Commits • 6 Features
Feb 1, 2025February 2025 monthly work summary for mamedev/mame. Focused on expanding hardware coverage, integrating bootleg variants, and establishing scaffolding for future hardware support, while addressing licensing metadata accuracy. Key features delivered include new system support, bootleg coverage, and skeletal drivers, with groundwork for international ROMs and interface documentation. A single bug fix ensured proper licensing attribution for IBM terminals.
February 2025
8 Commits • 6 Features
Feb 1, 2025February 2025 monthly work summary for mamedev/mame. Focused on expanding hardware coverage, integrating bootleg variants, and establishing scaffolding for future hardware support, while addressing licensing metadata accuracy. Key features delivered include new system support, bootleg coverage, and skeletal drivers, with groundwork for international ROMs and interface documentation. A single bug fix ensured proper licensing attribution for IBM terminals.
January 2025
3 Commits • 2 Features
Jan 1, 2025Month: 2025-01 | Mamedev/mame Concise monthly summary focusing on business value and technical achievements. Key features delivered and major fixes: - VTech Paw Patrol Learning Tablet (Spanish) emulation skeleton added to MAME, defining CPU, screen, speaker, input ports, and ROM loading. Status: skeleton; not working yet. Commit: 02ee19d3fde5731eccfe38737e558c84460f6fbd. - Rocket Convoy added to the Galaxian driver, including ROM definitions and game entry; mame.lst updated accordingly. Commit: c19fbc8d62156ee3e22d7295cc2efe2523c3132f. - Added missing rocktcnvy PROMs to Galaxian driver with CRC/SHA1 checksums to ensure data integrity and accurate emulation. Commit: 811368a1e2b37ba1f1b3f217feda573175dff62e. Overall impact and accomplishments: - Extended emulator coverage to support additional hardware families (VTech tablet skeleton; Galaxian-based clones), enabling broader testing and future feature work. - Improved ROM data integrity and repeatable emulation results through explicit CRC/SHA1 checksums and corrected ROM_LOAD entries. - Clear traceability of changes with commit references for maintenance and code review. Technologies/skills demonstrated: - C++, MAME architecture, driver skeletons, and input/ROM loading definitions. - ROM management and data integrity through CRC/SHA1 checksums and ROM loading validation. - Version-controlled contributions with clear scope definitions and contributor messaging. Business value: - Reduces risk in future emulation work by establishing solid scaffolding and validation for new hardware under test. - Improves game/driver coverage, aiding QA, documentation, and community validation efforts.
3 Commits • 2 Features
Jan 1, 2025Month: 2025-01 | Mamedev/mame Concise monthly summary focusing on business value and technical achievements. Key features delivered and major fixes: - VTech Paw Patrol Learning Tablet (Spanish) emulation skeleton added to MAME, defining CPU, screen, speaker, input ports, and ROM loading. Status: skeleton; not working yet. Commit: 02ee19d3fde5731eccfe38737e558c84460f6fbd. - Rocket Convoy added to the Galaxian driver, including ROM definitions and game entry; mame.lst updated accordingly. Commit: c19fbc8d62156ee3e22d7295cc2efe2523c3132f. - Added missing rocktcnvy PROMs to Galaxian driver with CRC/SHA1 checksums to ensure data integrity and accurate emulation. Commit: 811368a1e2b37ba1f1b3f217feda573175dff62e. Overall impact and accomplishments: - Extended emulator coverage to support additional hardware families (VTech tablet skeleton; Galaxian-based clones), enabling broader testing and future feature work. - Improved ROM data integrity and repeatable emulation results through explicit CRC/SHA1 checksums and corrected ROM_LOAD entries. - Clear traceability of changes with commit references for maintenance and code review. Technologies/skills demonstrated: - C++, MAME architecture, driver skeletons, and input/ROM loading definitions. - ROM management and data integrity through CRC/SHA1 checksums and ROM loading validation. - Version-controlled contributions with clear scope definitions and contributor messaging. Business value: - Reduces risk in future emulation work by establishing solid scaffolding and validation for new hardware under test. - Improves game/driver coverage, aiding QA, documentation, and community validation efforts.
January 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for mamedev/mame: Delivered new emulation support for Turtles (Novatronic bootleg) by adding a dedicated machine configuration and memory map to faithfully emulate this variant and integrate its ROMs. The work ensures accurate reproduction of bootleg hardware and ROM loading, enabling preservation and research of this arcade variant. The commit 8bb307b4af7f0fe4f1c556ea05be231fe6460a47 (“Add a new Spanish Turtles bootleg (#13096)”) captures the change. Impact: expands variant coverage, improves user experience for bootleg enthusiasts, and strengthens the emulator’s extensibility for future bootleg variants. Technologies/skills demonstrated: C++, MAME architecture, machine configuration, memory mapping, ROM integration, debugging and patching.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for mamedev/mame: Delivered new emulation support for Turtles (Novatronic bootleg) by adding a dedicated machine configuration and memory map to faithfully emulate this variant and integrate its ROMs. The work ensures accurate reproduction of bootleg hardware and ROM loading, enabling preservation and research of this arcade variant. The commit 8bb307b4af7f0fe4f1c556ea05be231fe6460a47 (“Add a new Spanish Turtles bootleg (#13096)”) captures the change. Impact: expands variant coverage, improves user experience for bootleg enthusiasts, and strengthens the emulator’s extensibility for future bootleg variants. Technologies/skills demonstrated: C++, MAME architecture, machine configuration, memory mapping, ROM integration, debugging and patching.
November 2024
19 Commits • 4 Features
Nov 1, 2024Month 2024-11: Delivered foundational work expanding modular bootleg support, broadened ROM catalog with new variants, and improved data accuracy across mamedev/mame. Key accomplishments include skeleton drivers for Modular System bootleg arcade titles, extensive ROM/variant entries across multiple machines, a new Flash VGA 2 skeleton driver, and comprehensive documentation/localization improvements. These efforts increase hardware coverage, improve data reliability for end users, and establish a scalable base for future emulation development and maintenance.
19 Commits • 4 Features
Nov 1, 2024Month 2024-11: Delivered foundational work expanding modular bootleg support, broadened ROM catalog with new variants, and improved data accuracy across mamedev/mame. Key accomplishments include skeleton drivers for Modular System bootleg arcade titles, extensive ROM/variant entries across multiple machines, a new Flash VGA 2 skeleton driver, and comprehensive documentation/localization improvements. These efforts increase hardware coverage, improve data reliability for end users, and establish a scalable base for future emulation development and maintenance.
November 2024
Activity
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Quality Metrics
Correctness88.8%
Maintainability90.8%
Architecture90.4%
Performance84.6%
AI Usage20.2%
Skills & Technologies
Programming Languages
AssemblyC++Lua
Technical Skills
Arcade Game DevelopmentArcade Game EmulationArcade Game PreservationAssemblyBug FixC++C++ DevelopmentC++ programmingCode CommentingCode CorrectionCode DocumentationCode RefactoringCodebase MaintenanceData IntegrityDocumentation
Repositories Contributed To
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