[nes8] NesD 0.21.3 01/10/2026

NesD 0.21.3 01/10/2026

Added

• Bindable hard reset (power cycle) action
• VT03 CPU opcode scrambling

Fixed

• ROMs with a PlayChoice-10 console type in the header can now be loaded
• Fixed incorrect palette colors in VT03 games

NesD 0.21.2 29/09/2026

Added

• AppImages now contain update information

Fixed

• On Linux, the window no longer opens larger than the screen

NesD 0.21.1 26/09/2026

Changed

• AppImages are now named nesd.<version>.x86_64.AppImage / nesd.<version>.aarch64.AppImage

Fixed

• NESd runs on Ubuntu 22.04 and other older distros again

NesD 0.21.0 26/09/2026

Added

• Color Dreams (mapper 11) support
• AVE NINA-03/NINA-06 (mapper 79) and Sachen 3015 (mapper 146) support
• Undo Load State
• Screenshot action (F12 by default) that saves the current frame
• The web version can be installed to the home screen with offline support
• OAM corruption: sprites glitch like on real hardware
• The web version can start a ROM from a link

Changed

• Improved emulation performance

Fixed

• Fixed minor bugs in multiple CPU instructions
• Fixed an issue with the open bus implementation
• More accurate APU frame interrupt flag
• Fixed an inaccuracy in the controller input implementation
• More accurate PPU implementation
• More accurate sprite evaluation

NesD 0.20.0 16/09/2026

NesD GUI

Added

• Konami VRC2 and VRC4 (mappers 21, 22, 23, 25) support
• Sunsoft FME-7 (mapper 69) support
• In-app palette editor with live preview and export
• Search field in Settings
• Auto save now also saves when quitting a game or quitting NESd
• Most screens now show input hints for the current input method
• The Previous Tab and Next Tab actions now page through the recent ROMs and save states
• All settings can now be changed with the keyboard or a gamepad

Changed

• The main menu and file picker now show that they're loading a ROM
• Improved gamepad and keyboard menu navigation
• Improved file picker list speed on Android
• Increased process priority on macOS
• The privacy policy now describes the website's statistics

Fixed

• Battery saves, save states, and thumbnails are matched to a ROM and not its filename
• Cheats and breakpoints are matched to a ROM and not its filename
• UNROM (mapper 2) games larger than 256 KiB now reach all of their banks
• Short Zapper trigger pulls are no longer ignored
• Two ROMs with the same file name no longer share their saves, save states, and breakpoints
• Quitting NESd no longer loses the SRAM save it was writing
• The file picker now stays open when a ROM fails to load
• Fixed the file picker freezing on Android in large directories
• The web version now has sound on plain HTTP
• Fixed APU length counter halt and reload write timing
• Fixed DMC DMA idle cycle reads
• Fixed the sprite overflow flag set timing

NesD 0.19.0 6/08/2026

Added

• Implemented UNROM 512 (mapper 30)
• Implemented VT03 OneBus (mapper 256)
• Rewind now has a timeline scrubber
• Added multiple color palettes
• Palettes can now be imported from .pal files
• ROMs can now be loaded from .7z archives
• Added an xBR-style upscaling filter
• Gamepads now work out of the box with a default mapping
• Added an audio mixer
• Folders inside an archive can now be browsed
• Implemented open bus for the CPU and PPU

Changed

• The emulator now runs on the fastest CPU cores on Android
• Decluttered the settings screen
• Gamepad bindings now name a slot ("Gamepad 1") instead of a device. Existing bindings are migrated
• Controls settings show the detected gamepads
• Reset now behaves like the console's reset button

Fixed

• Fixed audio underruns on devices that read audio in large bursts
• Fixed audio underruns and slowdown with rewind enabled on lower-end devices
• Broken save states no longer stop games from starting
• Broken save states are marked in the save state picker
• Fixed the logo being cut off on the Android splash screen
• Fixed a crash when a game writes a full 256 bytes to the PPU's OAM data register
• Fixed the PPU skipping a cycle on odd frames while rendering is turned off
• Turning NMI on while the PPU is already in vblank now triggers an NMI right away
• Fixed skipped IRQs on MMC3 games
• Fixed MMC3 scanline counter being off by one
• Fixed sprite data getting discarded while rendering is off
• Fixed color emphasis applying an inverted tint
• Fixed color emphasis on PAL
• ROM and archive file extensions are now matched case-insensitively
• Fixed opening a ROM from inside a zip archive on Windows
• Fixed inconsistent zip archive handling depending on how you opened it
• Fixed broken settings crashing NESd on start
• Fixed some dummy reads occurring at the wrong address
• Fixed APU frame counter timing
• Fixed DMC samples playing one CPU cycle per bit too slowly
• Fixed NMI timing
• Fixed sprite DMA finishing one CPU cycle early
• Fixed DMC sample fetches stalling the CPU for the wrong number of cycles
• Fixed palette reads through PPUDATA
• PPU addresses 0x3000-0x3eff now mirror the nametables like real hardware

NesD 0.18.0 30/08/2026

Added

• Play NESd in the browser at https://nesd.jpj.dev/play/, with a self-hostable Docker image (ghcr.io/jpjonte/nesd)
• Implemented GPU rendering on Linux and Windows
• Added Turbo for the A and B buttons on both controllers, with a configurable speed
• Fast-forward speed is configurable: 2x (default), 3x, 4x, max (without audio)
• Fast-forward now plays audio
• The file picker now supports letter skipping on a gamepad: the Previous/Next Tab actions jump to the previous/next starting letter
• Added a Swap Duty Cycles toggle to the Audio settings
• Added a Low Pass Filter toggle to the Audio settings
• Added overscan settings, configurable per side, 8px top and bottom by default
• Multiple video filters can now be activated at once
• The debug overlay now includes a frame time graph, splitting each frame into emulation work and pacing sleep
• Added an Audio settings tool
• Emulator tools can now be navigated with a gamepad
• Tools can now be focused using the "Focus Tools" action
• The log viewer now colors log levels and channels and supports text search
• Nightly and branch builds now show a build id in the About dialog and the startup log

Changed

• Video filters (CRT, smooth) can now run on top of the GPU renderer instead of forcing a fallback to the CPU renderer
• Updated default settings for new users: Auto load is enabled and scaling is set to "smooth"
• The main menu buttons now sit in a single row below the recent ROM list, so the ROM grid gets more rows on wide screens like the Steam Deck
• Recent ROM thumbnails now fade in and show a progress indicator when they take a while to load
• Holding a gamepad button in menus now speeds up the repeat rate over time
• Cancel on a gamepad (Escape on the keyboard) in the file picker now goes back one directory
• The log viewer now opens at the Info level and tags telemetry lines as Debug
• The About button moved from the main menu to the General settings tab
• The "Quit NESd" button is no longer shown on Android
• Flatpak nightlies are now published to the main jpj.dev Flatpak repo. Existing nightly installs show a message pointing at the new repo

Fixed

• Fixed the Zapper registering hits on the wrong target
• Fixed the CRT filter's scanlines rendering as one giant scanline
• Fixed constant audio crackling on some Android devices
• Fixed audio stutters due to inconsistent timers
• Fixed the "Save states" entry in the recent ROM context menu doing nothing when no game is running
• Fixed controller focus getting stuck in the file picker's search bar
• Fixed Escape quitting to the main menu instead of opening the in-game menu after resuming the game with Enter
• The Android status and navigation bars are now hidden by default
• Keys that are not bound to anything no longer trigger UI shortcuts while in game
• Fixed the main menu logo appearing late
• Fixed ROMs being loaded before the ROM database is ready
• Fixed emulator tools swallowing input and Escape quitting to main menu instead of opening the in-game menu
• Fixed not all architectures being published to the Flatpak repo
• Fixed a ROM path passed on the command line not starting automatically

NesD 0.17.0 7/08/2026

Added

• Built in graphics filters: CRT and smooth
• Display tool: adjust filter, scaling, aspect ratio and border while the game is running
• Support for mapper 45 (GA23C), used by MMC3-based multicart cartridges
• Fuzzy matching in the file picker search bar, with the best matches listed first
• A log viewer (Settings → Debug → View log) with per-line context, copy and file export, plus a rolling log file

Changed

• Nightly Linux builds are now a separate dev flavor. Existing nightly Flatpak installs are migrated automatically
• Debug tools are now opened from the in-game menu under "Tools" instead of the Debug settings tab, and can be bound to keys or gamepad buttons. Panels you had open are carried over
• The execution log now shares the debug tool column instead of taking a column of its own
• Gamepad input now uses the upstream gamepads plugin with normalized button and axis names on all platforms. Saved gamepad bindings are translated automatically where possible
• Upgraded to Flutter 3.47 and Dart 3.13. The minimum supported macOS version is now 12.0 (Monterey)

Fixed

• Fixed control binders on touch screens deactivating right after being tapped, making it impossible to assign a binding by touch
• Fixed the ROM grid on the main menu and the save state screen overflowing on phones and narrow windows
• Fixed opening a debug tool in a narrow window squeezing the game display down to nothing
• Fixed the debug tools overlapping each other when several are open at once
• Fixed the arm64 deb and flatpak missing from release pages because the x64 files overwrote them
• Fixed rewind on macOS being unavailable on Intel Macs and on macOS older than 26.4, because the bundled LZ4 library was built only for Apple Silicon. It is now a universal binary that runs on macOS 12.0 and later
• Fixed GPU rendering on macOS silently falling back to the CPU renderer
• Fixed rewinding showing black frames and flickering
• Fixed graphics corrupting in battery-backed games when a save state was loaded by starting the game from the main menu
• Fixed ROM thumbnails staying black on Android

NesD 0.16.0 7/08/2026

Jackal (1988, Konami)

Added

• APU visualization: per-channel waveforms and parameters (Settings → Debug → Show APU visualization)
• MMC5 expansion audio: Additional audio channels used by Japanese MMC5 games
• Namco 163 expansion audio: Additional audio channels used by Japanese Namco 163 games
• Mapper 176 support: Chinese multicarts and educational cartridges using the 8025 enhanced MMC3 chipset

Fixed

• Fixed the second pulse channel following the first one's enable bit, so it could fall silent or keep playing along with the wrong channel
• Fixed ROM tiles frequently showing a blank thumbnail after returning from a game
• Fixed MMC5 games showing a black screen or freezing
• Fixed MMC5 games with battery-backed save RAM having no working memory at all, which also meant their saves were never written
• Fixed a crash in MMC5 games that use ExRAM attribute mode
• Fixed the first audio sample after a reset being slightly too loud
• Fixed Namco 163 games glitching or freezing whenever the game wrote to its sound hardware
• Fixed controls being dead after opening a ROM from the file picker, until the game was closed and started again
• Fixed opening a ROM via the "File → Open..." menu leaving the game running behind the main menu, with the controls dead
• Fixed a game briefly continuing to run in the background when it finished loading while another screen was open
• Fixed cancelling the "Open ROM" file picker resuming the game behind the in-game menu instead of leaving it paused
• Fixed NES 2.0 ROMs with more than 4 MiB of PRG ROM or 2 MiB of CHR ROM loading at the wrong size, which showed as blank or corrupt graphics
• Fixed NES 2.0 ROMs getting the wrong amount of work RAM, save RAM and CHR RAM, which could show as blank or garbled graphics and lost saves

NesD 0.15.0 7/08/2026