mamedev/mame
Oct 2024 – Apr 2026
19 Months active
Languages Used
CC++XMLLuaPythonYAMLMarkdown
Technical Skills
Bug FixC++ DevelopmentCode CleanupConfiguration ManagementData ManagementData Organization
angelosa
PROFILE
Angelosa
Over 19 months, Lordkale4 contributed deeply to the mamedev/mame repository, building and refining hardware emulation features, software list management, and system integration for platforms such as PC-98, Amiga, Jaguar, and Sega. Their engineering approach combined C++ and Python with low-level programming, focusing on accurate device emulation, memory management, and cross-platform compatibility. Lordkale4 delivered robust solutions for timing, DMA, and IRQ handling, modernized video and audio subsystems, and improved data hygiene through XML and YAML. Their work addressed complex debugging and maintainability challenges, resulting in more reliable emulation, expanded hardware coverage, and higher-quality code across the project’s evolving architecture.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
864Total
Bugs
239
Commits
864
Features
360
Lines of code
143,496
Activity Months19
Your Network
106 peopleWork History
April 2026
21 Commits • 6 Features
Apr 1, 2026April 2026 performance highlights for mamedev/mame focused on hardware data fidelity, input and video subsystem accuracy, and code health. Deliverables spanned PC-88 VA hardware data integration, Namco SG VGA feature work, input/renderer fixes for SMC-777, and driver refactors for Yachiyo SSingles/ATAMANOT, along with startup and stability improvements across platforms. These efforts improve emulation accuracy, reduce boot issues, and lay groundwork for future enhancements. Key achievements included initiating PC-88 VA hardware data integration to map pc88va_flop_orig.xml into hardware data with not-working markers for new software list items; implementing Namco SG VGA medal select handling and sound ROM bankswitch to improve gameplay and sound fidelity; refactoring Namco SMC-777 input wiring to MSX DE-9 and correcting bitmap layer tile offsets for reliable rendering; modernizing Yachiyo SSingles/ATAMANOT with a VRAM-visibility refactor, separation of ATAMANOT into its own driver, and preliminary Kanji hookup; and stability/compatibility improvements through startup validation fixes (Nintendo GameCube) and PC VGA SIS fast page addressing. Technologies/skills demonstrated include driver development in C++, memory map updates, modern C++ patterns (std::unique_ptr), QA-focused code hygiene, and cross-subsystem collaboration for emulation accuracy.
21 Commits • 6 Features
Apr 1, 2026April 2026 performance highlights for mamedev/mame focused on hardware data fidelity, input and video subsystem accuracy, and code health. Deliverables spanned PC-88 VA hardware data integration, Namco SG VGA feature work, input/renderer fixes for SMC-777, and driver refactors for Yachiyo SSingles/ATAMANOT, along with startup and stability improvements across platforms. These efforts improve emulation accuracy, reduce boot issues, and lay groundwork for future enhancements. Key achievements included initiating PC-88 VA hardware data integration to map pc88va_flop_orig.xml into hardware data with not-working markers for new software list items; implementing Namco SG VGA medal select handling and sound ROM bankswitch to improve gameplay and sound fidelity; refactoring Namco SMC-777 input wiring to MSX DE-9 and correcting bitmap layer tile offsets for reliable rendering; modernizing Yachiyo SSingles/ATAMANOT with a VRAM-visibility refactor, separation of ATAMANOT into its own driver, and preliminary Kanji hookup; and stability/compatibility improvements through startup validation fixes (Nintendo GameCube) and PC VGA SIS fast page addressing. Technologies/skills demonstrated include driver development in C++, memory map updates, modern C++ patterns (std::unique_ptr), QA-focused code hygiene, and cross-subsystem collaboration for emulation accuracy.
April 2026
March 2026
55 Commits • 26 Features
Mar 1, 2026March 2026 monthly summary for mamedev/mame focusing on delivering expanded hardware emulation coverage, stability improvements, and performance-oriented driver work. Highlights include VGA/SIS driver enhancements, initial Trident 4DWave-DX hookups, PCI/bus improvements, and video/audio subsystem refinements that broaden compatibility and streamline triage.
March 2026
55 Commits • 26 Features
Mar 1, 2026March 2026 monthly summary for mamedev/mame focusing on delivering expanded hardware emulation coverage, stability improvements, and performance-oriented driver work. Highlights include VGA/SIS driver enhancements, initial Trident 4DWave-DX hookups, PCI/bus improvements, and video/audio subsystem refinements that broaden compatibility and streamline triage.
February 2026
123 Commits • 72 Features
Feb 1, 2026February 2026 monthly summary for mamedev/mame: Consolidated feature delivery and stability improvements across multiple cores, with emphasis on hardware targeting, memory modeling, and data quality. The team expanded emulation coverage to new chipsets, improved reliability of legacy systems, and laid groundwork for future platform parity through refactors and ACPI/ISA remapping work.
123 Commits • 72 Features
Feb 1, 2026February 2026 monthly summary for mamedev/mame: Consolidated feature delivery and stability improvements across multiple cores, with emphasis on hardware targeting, memory modeling, and data quality. The team expanded emulation coverage to new chipsets, improved reliability of legacy systems, and laid groundwork for future platform parity through refactors and ACPI/ISA remapping work.
February 2026
January 2026
87 Commits • 31 Features
Jan 1, 2026In January 2026, the Jaguar-focused work in mamedev/mame delivered a concentrated set of stability, rendering, and correctness improvements that significantly raise game compatibility, visual fidelity, and developer productivity. The month emphasized reliability in IRQ/input handling, expanded the object/graphics pipeline, and tightened core opcode/memory behavior, while also addressing boot-time and CD-ROM software-list integrity. The resulting impact is tangible: fewer crashes, more accurate Jaguar rendering paths, and a stronger foundation for future title compatibility and feature work.
January 2026
87 Commits • 31 Features
Jan 1, 2026In January 2026, the Jaguar-focused work in mamedev/mame delivered a concentrated set of stability, rendering, and correctness improvements that significantly raise game compatibility, visual fidelity, and developer productivity. The month emphasized reliability in IRQ/input handling, expanded the object/graphics pipeline, and tightened core opcode/memory behavior, while also addressing boot-time and CD-ROM software-list integrity. The resulting impact is tangible: fewer crashes, more accurate Jaguar rendering paths, and a stronger foundation for future title compatibility and feature work.
December 2025
84 Commits • 31 Features
Dec 1, 2025December 2025 delivered targeted emulation enhancements and software-list improvements that strengthen compatibility, stability, and preservation outcomes. Highlights include a PC-98 CBUS remapping overhaul enabling coexistence with the base IDE BIOS (BREAKING CHANGE: mapping slots now use -cbus:N), SNES 68k hookup for piratdwb to run in attract mode, and critical SCSI/IO fixes and enhancements. Expanded software catalog through multiple items promoted to working and the addition of new working IBM PC/AT entries (e.g., Mega Man X; Chasm: The Rift) with QA improvements. Foundational progress for PLS-1000 and Brainchild integration, including cart interface hookup and NVRAM support, laid groundwork for future expansion. Also completed targeted updates to the Jaguar and related hardware cores to improve reliability and accuracy.
84 Commits • 31 Features
Dec 1, 2025December 2025 delivered targeted emulation enhancements and software-list improvements that strengthen compatibility, stability, and preservation outcomes. Highlights include a PC-98 CBUS remapping overhaul enabling coexistence with the base IDE BIOS (BREAKING CHANGE: mapping slots now use -cbus:N), SNES 68k hookup for piratdwb to run in attract mode, and critical SCSI/IO fixes and enhancements. Expanded software catalog through multiple items promoted to working and the addition of new working IBM PC/AT entries (e.g., Mega Man X; Chasm: The Rift) with QA improvements. Foundational progress for PLS-1000 and Brainchild integration, including cart interface hookup and NVRAM support, laid groundwork for future expansion. Also completed targeted updates to the Jaguar and related hardware cores to improve reliability and accuracy.
December 2025
November 2025
63 Commits • 26 Features
Nov 1, 2025November 2025 monthly summary for mamedev/mame focused on stabilizing core emulation, expanding PC-98 family support, and improving testability and code health. Delivered several high-impact features, resolved critical IRQ/MBUS issues, and performed targeted refactors to reduce legacy complexity and improve licensing compliance.
November 2025
63 Commits • 26 Features
Nov 1, 2025November 2025 monthly summary for mamedev/mame focused on stabilizing core emulation, expanding PC-98 family support, and improving testability and code health. Delivered several high-impact features, resolved critical IRQ/MBUS issues, and performed targeted refactors to reduce legacy complexity and improve licensing compliance.
October 2025
26 Commits • 15 Features
Oct 1, 2025October 2025 monthly summary for mamedev/mame focusing on business value, reliability, and platform coverage. Emphasis on delivering features that improve compatibility, correctness, and long-term maintainability, while expanding hardware emulation scope and modernizing the codebase.
26 Commits • 15 Features
Oct 1, 2025October 2025 monthly summary for mamedev/mame focusing on business value, reliability, and platform coverage. Emphasis on delivering features that improve compatibility, correctness, and long-term maintainability, while expanding hardware emulation scope and modernizing the codebase.
October 2025
September 2025
31 Commits • 10 Features
Sep 1, 2025September 2025 (2025-09) monthly summary for mamedev/mame. Focused on improving emulation fidelity, expanding video core capabilities, and enhancing stability and testability across multi-system drivers. Work targeted timing accuracy, hardware behavior, and state Save/Restore support to reduce regressions, improve compatibility, and support broader collections of arcade/console titles.
September 2025
31 Commits • 10 Features
Sep 1, 2025September 2025 (2025-09) monthly summary for mamedev/mame. Focused on improving emulation fidelity, expanding video core capabilities, and enhancing stability and testability across multi-system drivers. Work targeted timing accuracy, hardware behavior, and state Save/Restore support to reduce regressions, improve compatibility, and support broader collections of arcade/console titles.
August 2025
43 Commits • 12 Features
Aug 1, 2025August 2025: Delivered high-impact hardware emulation and system integration across the MAME core. Highlights include Megadrive/Mega32X banking hook and 68k-SH-2 FIFO communication, Teradrive WD7600 integration with ISA options and PS/2 keyboard support, generic_flop_525.xml support and hookups, ISA8/ISA16 options merge, SVGA Paradise ISA remap refactor with fixes, and extensive Teradrive system enhancements. These changes improved accuracy, broadened platform coverage, and enabled more robust QA and debugging workflows across multiple subsystems.
43 Commits • 12 Features
Aug 1, 2025August 2025: Delivered high-impact hardware emulation and system integration across the MAME core. Highlights include Megadrive/Mega32X banking hook and 68k-SH-2 FIFO communication, Teradrive WD7600 integration with ISA options and PS/2 keyboard support, generic_flop_525.xml support and hookups, ISA8/ISA16 options merge, SVGA Paradise ISA remap refactor with fixes, and extensive Teradrive system enhancements. These changes improved accuracy, broadened platform coverage, and enabled more robust QA and debugging workflows across multiple subsystems.
August 2025
July 2025
36 Commits • 9 Features
Jul 1, 2025July 2025 highlights for mamedev/mame focusing on emulation accuracy, hardware coverage, and content quality. Delivered major emulation fixes, hardware modernization across the MZ and Megadrive families, and strengthened QA and software lists to improve reliability and user experience. Key features delivered: - MZ hardware modernization: mz80b hardware differences implemented; UBC BARA/BARB read/write hooks; modernization of mz3500/mz2000 family (PIT/SACK/FDC hooks); release date data and PICs/system port A integration; MZ-5500 driver renaming and hardware integration groundwork. - Titan Overdrive 2 mapper and NVRAM support: added Titan Overdrive 2 mapper in bus/megadrive; NVRAM mapper support for Triple Play 96/Gold 8-bit. - Megadrive/32X and Megacdcd improvements: 32X related updates including stereo routing fix, 32X QA enhancements, and logmacro wrapping for Megacdcd commands; i2c type fixes for Megadrive EEPROM; startup hardening for improved stability. - Sound initialization improvement: enable sound playback during startup by dumping internal sound BIOS. Major bugs fixed: - Emulation correctness: DREQ size decrement and auto-off during transfers; fixes to MT07445, sgt24h and overrev behavior; Sega Mega Drive #13941 resolution. - Startup stability: Sub CPU RAM write boundary implemented to fix pitfall/pitfallu startup crash. - Misc fixes: removal of unused lc89510 stub; Z80 YM and bank_w mirror fixes; updated floppy XML validation and disk size alignment for mz5500; PC-100 floppy software list status updates. Overall impact and accomplishments: - Substantial increase in emulation accuracy and hardware coverage, enabling more titles to run correctly and more platforms to be playable. - Improved user experience with more working software lists and reliable QA passes, reducing risk for future releases. - Clear business value from delivering on core emulation fidelity and expanding supported hardware families, aligning with strategy to broaden MAME’s reach and reliability. Technologies/skills demonstrated: - Deep C++ driver and core emulation work across multiple architectures (MZ, Megadrive/32X, Megacdcd). - Hardware interface hooking (UBC, PIT/SACK, FDC, DMAC, CTC) and microcode-level updates. - Robust QA processes, software list maintenance, and content curation, with automated checks and documentation of changes.
July 2025
36 Commits • 9 Features
Jul 1, 2025July 2025 highlights for mamedev/mame focusing on emulation accuracy, hardware coverage, and content quality. Delivered major emulation fixes, hardware modernization across the MZ and Megadrive families, and strengthened QA and software lists to improve reliability and user experience. Key features delivered: - MZ hardware modernization: mz80b hardware differences implemented; UBC BARA/BARB read/write hooks; modernization of mz3500/mz2000 family (PIT/SACK/FDC hooks); release date data and PICs/system port A integration; MZ-5500 driver renaming and hardware integration groundwork. - Titan Overdrive 2 mapper and NVRAM support: added Titan Overdrive 2 mapper in bus/megadrive; NVRAM mapper support for Triple Play 96/Gold 8-bit. - Megadrive/32X and Megacdcd improvements: 32X related updates including stereo routing fix, 32X QA enhancements, and logmacro wrapping for Megacdcd commands; i2c type fixes for Megadrive EEPROM; startup hardening for improved stability. - Sound initialization improvement: enable sound playback during startup by dumping internal sound BIOS. Major bugs fixed: - Emulation correctness: DREQ size decrement and auto-off during transfers; fixes to MT07445, sgt24h and overrev behavior; Sega Mega Drive #13941 resolution. - Startup stability: Sub CPU RAM write boundary implemented to fix pitfall/pitfallu startup crash. - Misc fixes: removal of unused lc89510 stub; Z80 YM and bank_w mirror fixes; updated floppy XML validation and disk size alignment for mz5500; PC-100 floppy software list status updates. Overall impact and accomplishments: - Substantial increase in emulation accuracy and hardware coverage, enabling more titles to run correctly and more platforms to be playable. - Improved user experience with more working software lists and reliable QA passes, reducing risk for future releases. - Clear business value from delivering on core emulation fidelity and expanding supported hardware families, aligning with strategy to broaden MAME’s reach and reliability. Technologies/skills demonstrated: - Deep C++ driver and core emulation work across multiple architectures (MZ, Megadrive/32X, Megacdcd). - Hardware interface hooking (UBC, PIT/SACK, FDC, DMAC, CTC) and microcode-level updates. - Robust QA processes, software list maintenance, and content curation, with automated checks and documentation of changes.
June 2025
29 Commits • 19 Features
Jun 1, 2025June 2025 monthly summary focusing on core deliverables across the MAME codebase: bug fixes, code organization improvements, and modernization efforts aimed at improving emulation accuracy, reliability, and maintainability. The month delivered targeted cross-driver fixes, branding/structure improvements, and significant work on the MZ2000 family that set the foundation for long-term stability and feature readiness.
29 Commits • 19 Features
Jun 1, 2025June 2025 monthly summary focusing on core deliverables across the MAME codebase: bug fixes, code organization improvements, and modernization efforts aimed at improving emulation accuracy, reliability, and maintainability. The month delivered targeted cross-driver fixes, branding/structure improvements, and significant work on the MZ2000 family that set the foundation for long-term stability and feature readiness.
June 2025
May 2025
28 Commits • 11 Features
May 1, 2025May 2025 focused on expanding emulation coverage, stabilizing key platforms, and improving developer tooling. Delivered major hardware integration for PNTNPuzls with UI improvements; introduced Sega MPEG/DSB2 support; advanced Sega Model3 platform with boot/startup fixes, IO wiring, and graphics pipeline enhancements; updated Qt Debuggerview styling and Qt5 palette compatibility; and added 4-player support in Sega Model2 AirWlkrs. These efforts extend hardware accuracy, reduce regression risk, and enhance debugging productivity, delivering business value by enabling more accurate emulation for a broader set of arcade systems and improving internal workflows.
May 2025
28 Commits • 11 Features
May 1, 2025May 2025 focused on expanding emulation coverage, stabilizing key platforms, and improving developer tooling. Delivered major hardware integration for PNTNPuzls with UI improvements; introduced Sega MPEG/DSB2 support; advanced Sega Model3 platform with boot/startup fixes, IO wiring, and graphics pipeline enhancements; updated Qt Debuggerview styling and Qt5 palette compatibility; and added 4-player support in Sega Model2 AirWlkrs. These efforts extend hardware accuracy, reduce regression risk, and enhance debugging productivity, delivering business value by enabling more accurate emulation for a broader set of arcade systems and improving internal workflows.
April 2025
30 Commits • 17 Features
Apr 1, 2025April 2025 monthly work summary for mamedev/mame focusing on delivering foundational features, improving hardware emulation accuracy, and refactoring to enable broader device support. This period emphasized skeleton development, compatibility enhancements, BIOS/ROM overlay groundwork, QA/documentation updates, and targeted stability fixes to advance platform coverage and maintainability.
30 Commits • 17 Features
Apr 1, 2025April 2025 monthly work summary for mamedev/mame focusing on delivering foundational features, improving hardware emulation accuracy, and refactoring to enable broader device support. This period emphasized skeleton development, compatibility enhancements, BIOS/ROM overlay groundwork, QA/documentation updates, and targeted stability fixes to advance platform coverage and maintainability.
April 2025
March 2025
35 Commits • 15 Features
Mar 1, 2025March 2025 delivered substantial PC-88VA-related emulation improvements, infrastructure work, and code-quality gains across the mamedev/mame repository. The month emphasized graphics/rendering fidelity, broader hardware coverage, and QA/data integrity, supported by targeted bug fixes and maintainability efforts.
March 2025
35 Commits • 15 Features
Mar 1, 2025March 2025 delivered substantial PC-88VA-related emulation improvements, infrastructure work, and code-quality gains across the mamedev/mame repository. The month emphasized graphics/rendering fidelity, broader hardware coverage, and QA/data integrity, supported by targeted bug fixes and maintainability efforts.
February 2025
45 Commits • 16 Features
Feb 1, 2025February 2025 (mamedev/mame) focused on improving emulation fidelity, cross-system maintainability, and QA coverage across multiple cores. Delivered notable feature work, meaningful bug fixes, and groundwork for future hardware accuracy. This month’s work strengthens release readiness and expands support for more titles while reducing regressions and maintenance costs. Key features delivered: - AmigaAGA improvements: fixed playfield-sprite collisions; implemented CLXCON2; enabled palette reads to improve color accuracy and visual correctness. - Alba Hanadojo and SetA Hanadojo enhancements: enhanced color handling, compatibility for proms hookup, sketchy video emulation improvements, and preliminary IOX HLE devices with improved input handling and patch protection checks. - PC-8801 and Amiga CD software lists: added Hibernia to pc8801_flop and marked Wendetta in amiga_cd as not working, with metadata updates to improve QA and catalog accuracy. - Konami nwk-tr: implemented broadcast CG select to align with hardware capabilities. - System organization and refactors: moved alba into seta folder, and began reorganizing CD-related interfaces for consistency (Sega CD subsystem reorg and interface alignment). - NVRAM and service inputs: hooked up 8-bit NVRAM device and identified service inputs for more thorough hardware emulation. Major bugs fixed: - Revert in Amiga/agnus copper: revert 51919d5 to restore previous copper behavior and reduce regressions. - X68k flop: fix #8870 to correct disk image handling. - Sega CD: include guard fix and tray unload handling to avoid unstable image state. - PC/VGA and COM3 addressing: fixed linear addressing regression and stray COM3 access handling to ensure stable video memory mapping. Overall impact and accomplishments: - Improved emulation accuracy for Amiga AGA graphics, more reliable Sega CD/CD-system behavior, and better QA through updated software lists and metadata. - Reduced regressions by reverts and include guard fixes, while enabling longer-term refactors (CD interfaces, IO devices). - Expanded hardware coverage (NVRAM, early IOX HLE, service inputs) to better reflect real-system behavior, enabling more realistic testing and feature parity. Technologies/skills demonstrated: - C++ modernization and targeted fixes in large emulation codebases, cross-file refactoring, and interface normalization. - Emulation accuracy enhancements (graphics, NVRAM, IO/HLE devices). - QA, metadata curation, and software-list management to improve testability and release readiness.
45 Commits • 16 Features
Feb 1, 2025February 2025 (mamedev/mame) focused on improving emulation fidelity, cross-system maintainability, and QA coverage across multiple cores. Delivered notable feature work, meaningful bug fixes, and groundwork for future hardware accuracy. This month’s work strengthens release readiness and expands support for more titles while reducing regressions and maintenance costs. Key features delivered: - AmigaAGA improvements: fixed playfield-sprite collisions; implemented CLXCON2; enabled palette reads to improve color accuracy and visual correctness. - Alba Hanadojo and SetA Hanadojo enhancements: enhanced color handling, compatibility for proms hookup, sketchy video emulation improvements, and preliminary IOX HLE devices with improved input handling and patch protection checks. - PC-8801 and Amiga CD software lists: added Hibernia to pc8801_flop and marked Wendetta in amiga_cd as not working, with metadata updates to improve QA and catalog accuracy. - Konami nwk-tr: implemented broadcast CG select to align with hardware capabilities. - System organization and refactors: moved alba into seta folder, and began reorganizing CD-related interfaces for consistency (Sega CD subsystem reorg and interface alignment). - NVRAM and service inputs: hooked up 8-bit NVRAM device and identified service inputs for more thorough hardware emulation. Major bugs fixed: - Revert in Amiga/agnus copper: revert 51919d5 to restore previous copper behavior and reduce regressions. - X68k flop: fix #8870 to correct disk image handling. - Sega CD: include guard fix and tray unload handling to avoid unstable image state. - PC/VGA and COM3 addressing: fixed linear addressing regression and stray COM3 access handling to ensure stable video memory mapping. Overall impact and accomplishments: - Improved emulation accuracy for Amiga AGA graphics, more reliable Sega CD/CD-system behavior, and better QA through updated software lists and metadata. - Reduced regressions by reverts and include guard fixes, while enabling longer-term refactors (CD interfaces, IO devices). - Expanded hardware coverage (NVRAM, early IOX HLE, service inputs) to better reflect real-system behavior, enabling more realistic testing and feature parity. Technologies/skills demonstrated: - C++ modernization and targeted fixes in large emulation codebases, cross-file refactoring, and interface normalization. - Emulation accuracy enhancements (graphics, NVRAM, IO/HLE devices). - QA, metadata curation, and software-list management to improve testability and release readiness.
February 2025
January 2025
39 Commits • 11 Features
Jan 1, 2025January 2025 monthly summary for mamedev/mame focusing on Amiga emulation fidelity, code maintainability, and QA improvements. Delivered a cohesive set of timing- and DMA-related fixes, plus organizational refactors that improve long-term maintainability and onboarding. Emphasis on aligning hardware behavior with real Amiga timing, reducing glitches in audio playback, and improving data quality through explicit QA updates.
January 2025
39 Commits • 11 Features
Jan 1, 2025January 2025 monthly summary for mamedev/mame focusing on Amiga emulation fidelity, code maintainability, and QA improvements. Delivered a cohesive set of timing- and DMA-related fixes, plus organizational refactors that improve long-term maintainability and onboarding. Emphasis on aligning hardware behavior with real Amiga timing, reducing glitches in audio playback, and improving data quality through explicit QA updates.
December 2024
24 Commits • 9 Features
Dec 1, 2024Month: 2024-12 — Monthly work summary for mamedev/mame. Focused on stabilizing video and Amiga emulation, improving data hygiene, and maintainability. Key features delivered include VGA and data handling improvements, input mapping refinements, and targeted code cleanups that reduce complexity and improve future contributions. Key features delivered: - Cirrus VGA arch upgrade: replaced cirrus_define_video_mode with VGA arch recompute_params to improve parameter handling. - AmigaCD software list: kickoff AmigaCD software list and move 10on10 from cdtv.xml to Amiga CD software list. - Input remapping: remap IPT_SERVICE to IPT_SELECT for CPS Changer games to align input mappings. - Data hygiene improvements: convert dataeast/metlclsh.cpp to set_raw for raw data handling; add sharedfeat for Hexen and spacing adjustments in hash/mac_cdrom. - Code cleanup and refactor: remove MACHINE_IS_SKELETON flags; anon to emu_timer conversion; update reference URL in midcoin/24cdjuke.cpp; add logging setups and serial connection notes for better diagnostics. Major bugs fixed: - Video: fix reset_origin handling during CRT reprogramming in the upd7220 video driver. - Video: fetch configuration pins when entering VGA setup mode to ensure correct initialization (macpb180c on restarts & wake). - Cirrus: workaround crash for zorro/picasso2; fix bit 3 in blitting status. - Amiga: guard against out-of-bounds bitmap writes in amiga_v.cpp (fix for #9936 and MT8483). - Input: retire PORT_VBLANK / PORT_HBLANK usage from emu/ioport.h. - AmigaFDC: avoid spinning the drive motor when no disk is present; revert floppy motor spin optimization and document revert reason. - Amiga CD validation: fix validation logic to improve data correctness. - Amiga: correct horizontal screen values to ensure proper display alignment. Overall impact and accomplishments: - Increased stability and correctness of video and Amiga emulation, leading to more reliable gameplay experiences across titles that rely on CRT, VGA, and Amiga hardware paths. - Improved data integrity for software lists and hash entries, enabling more accurate emulation datasets and easier contributor onboarding. - Enhanced maintainability through code cleanup, refactoring, and better diagnostics. Technologies/skills demonstrated: - C++ emulation development (video subsystems, input handling, and data APIs). - VGA and Cirrus VGA architecture work, with parameter recomputation strategies. - Memory safety and boundary checks (Amiga), crash mitigation, and data validation. - Data hygiene, set_raw usage, and software-list data handling. - Code maintenance practices: skeleton flag removal, emu_timer migration, documentation, logging, and diagnostic improvements.
24 Commits • 9 Features
Dec 1, 2024Month: 2024-12 — Monthly work summary for mamedev/mame. Focused on stabilizing video and Amiga emulation, improving data hygiene, and maintainability. Key features delivered include VGA and data handling improvements, input mapping refinements, and targeted code cleanups that reduce complexity and improve future contributions. Key features delivered: - Cirrus VGA arch upgrade: replaced cirrus_define_video_mode with VGA arch recompute_params to improve parameter handling. - AmigaCD software list: kickoff AmigaCD software list and move 10on10 from cdtv.xml to Amiga CD software list. - Input remapping: remap IPT_SERVICE to IPT_SELECT for CPS Changer games to align input mappings. - Data hygiene improvements: convert dataeast/metlclsh.cpp to set_raw for raw data handling; add sharedfeat for Hexen and spacing adjustments in hash/mac_cdrom. - Code cleanup and refactor: remove MACHINE_IS_SKELETON flags; anon to emu_timer conversion; update reference URL in midcoin/24cdjuke.cpp; add logging setups and serial connection notes for better diagnostics. Major bugs fixed: - Video: fix reset_origin handling during CRT reprogramming in the upd7220 video driver. - Video: fetch configuration pins when entering VGA setup mode to ensure correct initialization (macpb180c on restarts & wake). - Cirrus: workaround crash for zorro/picasso2; fix bit 3 in blitting status. - Amiga: guard against out-of-bounds bitmap writes in amiga_v.cpp (fix for #9936 and MT8483). - Input: retire PORT_VBLANK / PORT_HBLANK usage from emu/ioport.h. - AmigaFDC: avoid spinning the drive motor when no disk is present; revert floppy motor spin optimization and document revert reason. - Amiga CD validation: fix validation logic to improve data correctness. - Amiga: correct horizontal screen values to ensure proper display alignment. Overall impact and accomplishments: - Increased stability and correctness of video and Amiga emulation, leading to more reliable gameplay experiences across titles that rely on CRT, VGA, and Amiga hardware paths. - Improved data integrity for software lists and hash entries, enabling more accurate emulation datasets and easier contributor onboarding. - Enhanced maintainability through code cleanup, refactoring, and better diagnostics. Technologies/skills demonstrated: - C++ emulation development (video subsystems, input handling, and data APIs). - VGA and Cirrus VGA architecture work, with parameter recomputation strategies. - Memory safety and boundary checks (Amiga), crash mitigation, and data validation. - Data hygiene, set_raw usage, and software-list data handling. - Code maintenance practices: skeleton flag removal, emu_timer migration, documentation, logging, and diagnostic improvements.
December 2024
November 2024
54 Commits • 20 Features
Nov 1, 2024November 2024 monthly summary for mamedev/mame focusing on delivering business value through emulation reliability, hardware-accurate graphics, and data quality improvements. The team advanced core PC-9801 emulation fidelity, expanded display capabilities across multiple VGA/TSENG targets, integrated memory-mapped I/O interfaces, and improved software readiness and QA data, driving higher accuracy and user confidence.
November 2024
54 Commits • 20 Features
Nov 1, 2024November 2024 monthly summary for mamedev/mame focusing on delivering business value through emulation reliability, hardware-accurate graphics, and data quality improvements. The team advanced core PC-9801 emulation fidelity, expanded display capabilities across multiple VGA/TSENG targets, integrated memory-mapped I/O interfaces, and improved software readiness and QA data, driving higher accuracy and user confidence.
October 2024
11 Commits • 4 Features
Oct 1, 2024October 2024 monthly summary for mamedev/mame: Delivered core data quality improvements, hardware interface enhancements, and improved configurability, while addressing critical logging and documentation quality. Key features delivered include PC-98 data accuracy improvements to clean obsolete formats, add tool recognitions, reclassify entries, and standardize prefixes for software lists; NEC PC9801 serial port support adding RS232 port and SIO IRQ handling; X68k_flop software compatibility improvements updating the working status for Emerald Densetsu and Strider Hiryuu; Device construction flexibility enhancement introducing an optional screen tag parameter for the upd7220_device constructor. Major bugs fixed include SNES MMU logging bug fix to correct log formatting for writes to read-only ports. Overall impact: improved data quality and emulation accuracy, expanded hardware interaction capabilities, and better maintainability. Technologies demonstrated: C++, code maintenance, data hygiene, hardware I/O integration (RS232/SIO), constructor configurability patterns, and improved logging/documentation.
11 Commits • 4 Features
Oct 1, 2024October 2024 monthly summary for mamedev/mame: Delivered core data quality improvements, hardware interface enhancements, and improved configurability, while addressing critical logging and documentation quality. Key features delivered include PC-98 data accuracy improvements to clean obsolete formats, add tool recognitions, reclassify entries, and standardize prefixes for software lists; NEC PC9801 serial port support adding RS232 port and SIO IRQ handling; X68k_flop software compatibility improvements updating the working status for Emerald Densetsu and Strider Hiryuu; Device construction flexibility enhancement introducing an optional screen tag parameter for the upd7220_device constructor. Major bugs fixed include SNES MMU logging bug fix to correct log formatting for writes to read-only ports. Overall impact: improved data quality and emulation accuracy, expanded hardware interaction capabilities, and better maintainability. Technologies demonstrated: C++, code maintenance, data hygiene, hardware I/O integration (RS232/SIO), constructor configurability patterns, and improved logging/documentation.
October 2024
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Quality Metrics
Correctness84.4%
Maintainability83.6%
Architecture81.2%
Performance76.6%
AI Usage20.6%
Skills & Technologies
Programming Languages
CC++LuaMarkdownPythonXMLYAML
Technical Skills
ACPIACPI implementationAudio EmulationAudio HardwareAudio Hardware EmulationAudio Hardware IntegrationAudio PlaybackAudio ProcessingAudio RoutingAudio SystemsBIOS ManagementBIOS developmentBug FixBug FixingBuild Process
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