Emulators, cores, and the architecture behind preserving and playing classic games today.https://danielcosenza.com/en-usFri, 17 Jul 2026 00:00:00 GMThttps://danielcosenza.com/posts/rg-crt-light-guns/https://danielcosenza.com/posts/rg-crt-light-guns/How brightness-sensing and beam-timed light guns worked with CRT raster scanning, why flat panels break them, and how emulators map modern replacements.Sun, 12 Jul 2026 00:00:00 GMTRetrogaminglight-guncrtinputhttps://danielcosenza.com/posts/rg-fix-corrupted-saves/https://danielcosenza.com/posts/rg-fix-corrupted-saves/Recover emulator saves by preserving originals, identifying the storage format, validating copies, and testing restoration in an isolated profile.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingsave-datarecoverybackuphttps://danielcosenza.com/posts/rg-fix-netplay-desync/https://danielcosenza.com/posts/rg-fix-netplay-desync/Eliminate emulator netplay desyncs by matching builds, content, firmware, saves, controller types, and deterministic settings before tuning latency.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingnetplaydesyncrollbackhttps://danielcosenza.com/posts/rg-fix-overscan-cropping/https://danielcosenza.com/posts/rg-fix-overscan-cropping/Separate television zoom, frontend viewport, shader masks, core overscan, and intentional border pixels before changing retro-game geometry.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingoverscancroppingdisplayhttps://danielcosenza.com/posts/rg-fix-refresh-rate-stutter/https://danielcosenza.com/posts/rg-fix-refresh-rate-stutter/Diagnose regular emulator judder by measuring content and display rates, separating workload spikes, and configuring VSync or VRR without speed drift.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingstutterrefresh-rateframe-pacinghttps://danielcosenza.com/posts/rg-fix-retroachievements-sync/https://danielcosenza.com/posts/rg-fix-retroachievements-sync/Diagnose missing RetroAchievements through account tokens, recognized game hashes, supported cores, Hardcore rules, connectivity, and session logs.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingretroachievementstroubleshootinghasheshttps://danielcosenza.com/posts/rg-frame-pacing-vsync/https://danielcosenza.com/posts/rg-frame-pacing-vsync/How source refresh rates, audio clocks, host displays, queues, and synchronization strategies create smooth motion—or periodic stutter and latency.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingframe-pacingvsynctiminghttps://danielcosenza.com/posts/rg-howto-document-physical-collection/https://danielcosenza.com/posts/rg-howto-document-physical-collection/Create a privacy-aware game inventory with stable IDs, condition records, calibrated photographs, archival masters, provenance, backups, and valuations.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingcollectionmetadatadocumentationhttps://danielcosenza.com/posts/rg-howto-fpga-retro-system/https://danielcosenza.com/posts/rg-howto-fpga-retro-system/Build an FPGA retro system with documented hardware, trusted firmware and cores, lawful content, safe power/video, tested saves, and reversible updates.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingfpgahardwarepreservationhttps://danielcosenza.com/posts/rg-howto-hardcore-achievements/https://danielcosenza.com/posts/rg-howto-hardcore-achievements/Run an already-configured RetroAchievements Hardcore session with a clean reset boundary, native-save discipline, legal hotkeys, and auditable evidence.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingretroachievementshardcoreretroarchhttps://danielcosenza.com/posts/rg-howto-low-latency-display/https://danielcosenza.com/posts/rg-howto-low-latency-display/Measure and reduce retro-gaming latency across controller, emulator, renderer, operating system, cable, display mode, scaling, and synchronization.Sun, 12 Jul 2026 00:00:00 GMTRetrogaminglatencydisplaycalibrationhttps://danielcosenza.com/posts/rg-howto-multisystem-arcade-cabinet/https://danielcosenza.com/posts/rg-howto-multisystem-arcade-cabinet/Build a maintainable arcade cabinet with safe power, documented controls, stable device IDs, layered per-system profiles, restricted service access, and backups.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingarcadecontrolsretroarchhttps://danielcosenza.com/posts/rg-howto-retroarch-playlists-thumbnails/https://danielcosenza.com/posts/rg-howto-retroarch-playlists-thumbnails/Build RetroArch playlists from verified content, audit every database match and core assignment, and preserve custom thumbnails across updates.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingretroarchplaylistsmetadatahttps://danielcosenza.com/posts/rg-news-3ds-wiiu-eshop-closure/https://danielcosenza.com/posts/rg-news-3ds-wiiu-eshop-closure/The staged shutdown that culminated on March 27, 2023—and why continued redownload access is not equivalent to permanent preservation.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingnintendoeshopdigital-preservationhttps://danielcosenza.com/posts/rg-news-dolphin-rvz/https://danielcosenza.com/posts/rg-news-dolphin-rvz/How Dolphin 5.0-12188 added RVZ in July 2020 to preserve complete GameCube and Wii disc data while achieving practical compression.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingdolphinrvzpreservationhttps://danielcosenza.com/posts/rg-news-mame-open-source-license/https://danielcosenza.com/posts/rg-news-mame-open-source-license/Why MAME's 2016 relicensing mattered for reuse, preservation tooling, and the distinction between emulator source and copyrighted game data.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingmameopen-sourcelicensinghttps://danielcosenza.com/posts/rg-news-playstation-store-closure-2026/https://danielcosenza.com/posts/rg-news-playstation-store-closure-2026/After reversing an earlier shutdown in 2021, Sony set staged PS3 closures beginning in 2026 and broader PS3/Vita closure for July 2027.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingplaystationdigital-preservationstorefrontshttps://danielcosenza.com/posts/rg-preservation-dumps-hashes-formats/https://danielcosenza.com/posts/rg-preservation-dumps-hashes-formats/How to verify cartridge and disc dumps with hashes, DATs, repeatable acquisition, provenance, lossless masters, documented derivatives, and fixity audits.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingpreservationno-introredumphttps://danielcosenza.com/posts/rg-retro-sound-chips/https://danielcosenza.com/posts/rg-retro-sound-chips/Why classic systems sound different: channels, oscillators, envelopes, filters, sample memory, bus timing, and the limits composers turned into instruments.Sun, 12 Jul 2026 00:00:00 GMTRetrogamingaudiosynthesissound-chipshttps://danielcosenza.com/posts/rg-tile-based-rendering/https://danielcosenza.com/posts/rg-tile-based-rendering/How tile maps, pattern tables, palettes, sprites, scanlines, and hardware limits produced classic 2D graphics—and what an emulator must reproduce.Sun, 12 Jul 2026 00:00:00 GMTRetrogaminggraphicstilesppuhttps://danielcosenza.com/posts/rg-bios-legal/https://danielcosenza.com/posts/rg-bios-legal/Why emulator code, firmware, game images, dumping, distribution, and anti-circumvention are separate legal questions requiring local analysis.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminglegalbioscopyrightretrogaminghttps://danielcosenza.com/posts/rg-cpu-emulation/https://danielcosenza.com/posts/rg-cpu-emulation/A technical comparison of CPU interpreters and dynamic recompilers, including dispatch cost, translation blocks, timing, exceptions, and cache invalidation.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingemulationcpuretrogamingperformancehttps://danielcosenza.com/posts/rg-cycle-accurate/https://danielcosenza.com/posts/rg-cycle-accurate/Why cycle-accurate emulation requires synchronized clocks, bus behavior, interrupts, video timing, hardware tests, and careful performance trade-offs.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingcycle-accurateemulationretrogamingaccuracyhttps://danielcosenza.com/posts/rg-emulation-vs-virtualization/https://danielcosenza.com/posts/rg-emulation-vs-virtualization/A practical boundary between emulation and hardware-assisted virtualization, including CPU execution, devices, memory, timing, and hybrid systems.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingemulationvirtualizationarchitectureretrogaminghttps://danielcosenza.com/posts/rg-fix-aspect-ratio-stretching/https://danielcosenza.com/posts/rg-fix-aspect-ratio-stretching/Diagnose stretched retro games by separating core geometry, pixel aspect ratio, integer scaling, overscan, and saved display overrides.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingfixaspect-ratiodisplayretroarchhttps://danielcosenza.com/posts/rg-fix-black-screen-wont-launch/https://danielcosenza.com/posts/rg-fix-black-screen-wont-launch/Isolate emulator black screens with verified content, lawful firmware, verbose logs, core requirements, clean overrides, and safe renderer tests.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingfixtroubleshootingretroarchhttps://danielcosenza.com/posts/rg-fix-controller-deadzone-drift/https://danielcosenza.com/posts/rg-fix-controller-deadzone-drift/Separate physical stick drift from mapping and calibration faults, then apply the smallest safe deadzone at the correct input layer.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingfixcontrollerinputcalibrationhttps://danielcosenza.com/posts/rg-fix-missing-bios-file/https://danielcosenza.com/posts/rg-fix-missing-bios-file/Resolve missing or invalid emulator firmware by checking core requirements, configured paths, exact names, hashes, permissions, and lawful dumps.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingfixbiosemulationtroubleshootinghttps://danielcosenza.com/posts/rg-fix-savestate-incompatible/https://danielcosenza.com/posts/rg-fix-savestate-incompatible/Recover an incompatible save state by preserving every artifact, matching the original trusted core and content, then migrating to an in-game save.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingfixsavestatesretroarchhttps://danielcosenza.com/posts/rg-fix-shader-compilation-stutter/https://danielcosenza.com/posts/rg-fix-shader-compilation-stutter/Separate emulated-GPU shader generation from RetroArch post-processing, then test caches, official drivers, backend, and documented precompile modes.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingfixshadersperformanceretroarchhttps://danielcosenza.com/posts/rg-fix-wrong-emulation-speed/https://danielcosenza.com/posts/rg-fix-wrong-emulation-speed/Diagnose incorrect emulator speed by separating throttle and region settings, host overload, display synchronization, and intentional console slowdown.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingfixperformancetimingretroarchhttps://danielcosenza.com/posts/rg-howto-bezels-overlays/https://danielcosenza.com/posts/rg-howto-bezels-overlays/Build a RetroArch decorative border with licensed artwork, correct alpha, a measured custom viewport, safe overlay configuration, and scoped presets.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtobezelsoverlaysretroarchhttps://danielcosenza.com/posts/rg-howto-crt-shaders/https://danielcosenza.com/posts/rg-howto-crt-shaders/Configure RetroArch CRT shaders from an official preset, then calibrate geometry, scanlines, mask, brightness, scaling, performance, and preset scope.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtoshaderscrtretroarchhttps://danielcosenza.com/posts/rg-howto-multitap-local-multiplayer/https://danielcosenza.com/posts/rg-howto-multitap-local-multiplayer/Configure RetroArch local multiplayer by separating physical controller assignment from emulated multitap device types, port rules, remaps, and hotkeys.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtoretroarchmultiplayercontrollerhttps://danielcosenza.com/posts/rg-howto-netplay-setup/https://danielcosenza.com/posts/rg-howto-netplay-setup/Set up RetroArch netplay with matched builds and content, private lobby settings, relay-first connectivity, narrow firewall rules, tested ports, and logs.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtonetplaymultiplayerretroarchhttps://danielcosenza.com/posts/rg-howto-per-game-overrides/https://danielcosenza.com/posts/rg-howto-per-game-overrides/Use RetroArch overrides safely by separating frontend settings, core options, input remaps, and shader presets across core, directory, and game scopes.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtoretroarchconfigurationhttps://danielcosenza.com/posts/rg-howto-retroarch-setup/https://danielcosenza.com/posts/rg-howto-retroarch-setup/Install RetroArch and trusted Libretro cores, configure writable data paths, verify firmware and controllers, and prove a clean game launch.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtoretroarchlibretrosetuphttps://danielcosenza.com/posts/rg-howto-retropie-setup/https://danielcosenza.com/posts/rg-howto-retropie-setup/Build a supportable RetroPie console with a model-matched official image, secure networking, lawful content, safe updates, and tested backups.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtoretropieraspberry-pihttps://danielcosenza.com/posts/rg-howto-rewind-configuration/https://danielcosenza.com/posts/rg-howto-rewind-configuration/Configure RetroArch rewind with verified save-state support, measured memory and frame-time costs, safe hotkeys, narrow overrides, and rollback tests.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtoretroarchrewindsavestateshttps://danielcosenza.com/posts/rg-howto-run-ahead/https://danielcosenza.com/posts/rg-howto-run-ahead/Configure RetroArch run-ahead from measured internal game lag, validate core serialization and performance, and keep a reversible per-game profile.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminghowtoinput-lagrun-aheadretroarchhttps://danielcosenza.com/posts/rg-input-latency/https://danielcosenza.com/posts/rg-input-latency/A stage-by-stage account of controller-to-photon latency, including polling, game logic, emulation, GPU queues, display scanout, and measurement.Sat, 11 Jul 2026 00:00:00 GMTRetrogaminginput-laglatencyretrogaminghttps://danielcosenza.com/posts/rg-news-dolphin-steam-removed/https://danielcosenza.com/posts/rg-news-dolphin-steam-removed/Why Dolphin's planned 2023 Steam release stopped after Valve consulted Nintendo, what the DMCA dispute did not decide, and how platforms govern access.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingnewslegalemulationgamecubehttps://danielcosenza.com/posts/rg-news-ggpo-opensource/https://danielcosenza.com/posts/rg-news-ggpo-opensource/Tony Cannon's 2019 MIT release opened GGPO's rollback SDK for study and commercial reuse, while leaving deterministic game integration to developers.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingnewsggponetcodehttps://danielcosenza.com/posts/rg-news-mame-mess-merge/https://danielcosenza.com/posts/rg-news-mame-mess-merge/MAME 0.162 integrated MESS in May 2015, placing arcade, computer, console, calculator, and other machine drivers in one preservation framework.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingnewsmamemessemulationhttps://danielcosenza.com/posts/rg-news-retroarch-10/https://danielcosenza.com/posts/rg-news-retroarch-10/RetroArch 1.0.0.0 coordinated one frontend across seven targets in 2014, demonstrating libretro's separation of cores from platform services.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingnewsretroarchlibretrohttps://danielcosenza.com/posts/rg-news-switch-online-nes/https://danielcosenza.com/posts/rg-news-switch-online-nes/Nintendo Switch Online launched in 2018 with 20 licensed NES games, suspend points, online play, and a subscription-dependent access model.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingnewsnintendoemulationhttps://danielcosenza.com/posts/rg-news-yuzu-shutdown/https://danielcosenza.com/posts/rg-news-yuzu-shutdown/Nintendo's 2024 case against Yuzu ended in a $2.4 million judgment and permanent injunction, without a contested trial on broader emulation law.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingnewslegalemulationnintendohttps://danielcosenza.com/posts/rg-rollback-netcode/https://danielcosenza.com/posts/rg-rollback-netcode/How rollback netcode predicts remote inputs, restores deterministic state, re-simulates missed frames, detects desyncs, and balances delay with artifacts.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingnetcoderollbackmultiplayerretrogaminghttps://danielcosenza.com/posts/rg-rom-dumping/https://danielcosenza.com/posts/rg-rom-dumping/How cartridge dumpers read ROM, mapper banks, save memory, and metadata—and how repeated reads, hashes, provenance, and safe handling establish confidence.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingrom-dumpingpreservationretrogaminghttps://danielcosenza.com/posts/rg-savestates/https://danielcosenza.com/posts/rg-savestates/How emulators serialize CPU, memory, devices, clocks, and pending events—and why completeness, determinism, versioning, and validation matter.Sat, 11 Jul 2026 00:00:00 GMTRetrogamingsavestatesemulationretrogaminghttps://danielcosenza.com/posts/rg-howto-cloud-save-sync/https://danielcosenza.com/posts/rg-howto-cloud-save-sync/Configure RetroArch native cloud sync safely with a primary device, non-destructive backups, matching directory rules, conflict tests, and secret hygiene.Fri, 10 Jul 2026 00:00:00 GMTRetrogaminghowtoretroarchsavessynchttps://danielcosenza.com/posts/rg-howto-rom-collection-metadata/https://danielcosenza.com/posts/rg-howto-rom-collection-metadata/Organize lawful game dumps without losing provenance: verify hashes, preserve masters, track transformations, and build auditable metadata and artwork.Fri, 10 Jul 2026 00:00:00 GMTRetrogaminghowtoromsorganizationpreservationhttps://danielcosenza.com/posts/rg-news-pcsx2-first-boot/https://danielcosenza.com/posts/rg-news-pcsx2-first-boot/How PCSX2's early commercial-game boot proved PlayStation 2 emulation viable, and why that milestone was only the start of decades of hardware research.Fri, 10 Jul 2026 00:00:00 GMTRetrogamingnewspcsx2playstation-2https://danielcosenza.com/posts/rg-news-sony-connectix-ruling/https://danielcosenza.com/posts/rg-news-sony-connectix-ruling/How the Ninth Circuit treated intermediate BIOS copying in Sony v. Connectix, what the ruling protected, and which questions it did not settle.Fri, 10 Jul 2026 00:00:00 GMTRetrogamingnewslegalemulationhistoryhttps://danielcosenza.com/posts/rg-crt-shaders/https://danielcosenza.com/posts/rg-crt-shaders/How integer scaling, aspect ratio, scanlines, masks, bloom, interlacing, and sampling interact when reproducing CRT-era video on flat panels.Thu, 09 Jul 2026 00:00:00 GMTRetrogamingshaderscrtscalingretrogaminghttps://danielcosenza.com/posts/rg-fix-audio-crackling/https://danielcosenza.com/posts/rg-fix-audio-crackling/Trace emulator audio crackling through performance, buffer underruns, refresh synchronization, drivers, resampling, and wireless output latency.Thu, 09 Jul 2026 00:00:00 GMTRetrogamingfixaudioretroarchperformancehttps://danielcosenza.com/posts/rg-fix-controller-not-detected/https://danielcosenza.com/posts/rg-fix-controller-not-detected/Trace an undetected controller from cable and OS enumeration through RetroArch drivers, autoconfiguration, port assignment, and core mapping.Thu, 09 Jul 2026 00:00:00 GMTRetrogamingfixcontrollerretroarchinputhttps://danielcosenza.com/posts/rg-history/https://danielcosenza.com/posts/rg-history/How MAME, DOSBox, libretro, reverse engineering, hardware research, and archival practice turned emulation into a preservation discipline.Thu, 09 Jul 2026 00:00:00 GMTRetrogaminghistoryemulationretrogamingpreservationhttps://danielcosenza.com/posts/rg-howto-retroachievements/https://danielcosenza.com/posts/rg-howto-retroachievements/Set up RetroAchievements with protected credentials, a supported RetroArch core, recognized RA hashes, Casual or Hardcore rules, and verified sync.Thu, 09 Jul 2026 00:00:00 GMTRetrogaminghowtoretroachievementsretroarchhttps://danielcosenza.com/posts/rg-libretro-architecture/https://danielcosenza.com/posts/rg-libretro-architecture/How libretro separates emulator cores from frontends through a stable C API, callbacks, environment negotiation, serialization, and shared services.Thu, 09 Jul 2026 00:00:00 GMTRetrogaminglibretroretroarcharchitectureretrogaminghttps://danielcosenza.com/posts/rg-news-dolphin-gamecube/https://danielcosenza.com/posts/rg-news-dolphin-gamecube/Dolphin's 2003 debut proved commercial GameCube software could run under emulation, before open sourcing and expanding into Wii support.Thu, 09 Jul 2026 00:00:00 GMTRetrogamingnewsdolphingamecubewii