Deecy

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About

Deecy is ranked #1 of 9 in Dreamcast emulators on Inferse. It runs on Linux, Windows.

Compared on Dreamcast emulators

Free plan: Yessenryoku.github.io
Supported platforms: Windows, Linuxsenryoku.github.io
Controller support: Yessenryoku.github.io
Save states: Yessenryoku.github.io
Dreamcast BIOS required: Yessenryoku.github.io

Facts

product type: Deecy is an experimental Dreamcast emulator written in Zig.github.com · 30 Sept 2026
operating systems: The official site describes Deecy as an open-source Dreamcast emulator for Windows and Linux.senryoku.github.io · 30 Sept 2026
installation: Users download and decompress an archive, place BIOS and flash dumps named dc_boot.bin and dc_flash.bin in the data folder, then choose their disc-image directory.senryoku.github.io · 30 Sept 2026
disc formats: The command-line interface can load .gdi, .cdi and .chd disc files.github.com · 30 Sept 2026
controller support: Deecy should detect and map controllers automatically, while allowing manual guest-port assignment and customizable keyboard bindings.github.com · 30 Sept 2026
save states: Keyboard shortcuts provide four save-state slots and four corresponding load-state slots.github.com · 30 Sept 2026
fullscreen and speed: The emulator supports fullscreen toggling and an unlimited emulation-speed mode.github.com · 30 Sept 2026
Linux serial integration: The Linux-only --scif option pipes a serial port to /tmp/deecy/scif for dcload-serial prototyping.github.com · 30 Sept 2026
DreamPicoPort integration: DreamPicoPort support is available as an optional build dependency and can be disabled with -Ddreampicoport=false.github.com · 30 Sept 2026
compatibility: The project maintains a compatibility list and invites users to contribute through a dedicated repository.senryoku.github.io · 30 Sept 2026
known limitations: The README lists unfinished areas including AICA filtering, framebuffer handling, exclusion modifier volumes, and several renderer features.github.com · 30 Sept 2026
licensing: The project states that the rest of Deecy is MIT licensed, while MAME data uses BSD-3-Clause and CHD features are based on MAME code.github.com · 30 Sept 2026
support: Bug reports are directed to the project's GitHub issue tracker.senryoku.github.io · 30 Sept 2026
funding: The official site asks supporters to make a one-time donation through GitHub Sponsors.senryoku.github.io · 30 Sept 2026
Product: Deecy is an open source Dreamcast emulator for Windows and Linux.senryoku.github.io · 1 Oct 2026
Technology: Deecy is an experimental Dreamcast emulator written in Zig.raw.githubusercontent.com · 1 Oct 2026
Downloads: The official site provides unstable builds for Windows and Linux.senryoku.github.io · 1 Oct 2026
BIOS requirement: Installation requires copying BIOS and flash dumps named dc_boot.bin and dc_flash.bin into the data folder.senryoku.github.io · 1 Oct 2026
Disc images: Users select the folder where their Dreamcast disc images are stored.senryoku.github.io · 1 Oct 2026
Compatibility: The project maintains a compatibility list and accepts contributions to its dedicated compatibility repository.senryoku.github.io · 1 Oct 2026
Controller support: Deecy should automatically detect, map and use controllers, with manual assignment to guest controller ports available in Settings.raw.githubusercontent.com · 1 Oct 2026
Keyboard: Keyboard bindings can be customized in Settings.raw.githubusercontent.com · 1 Oct 2026
Save states: Keyboard shortcuts provide four save-state slots and four load-state slots.raw.githubusercontent.com · 1 Oct 2026
Disc formats: The command line interface can load and execute .gdi, .cdi and .chd disc files.raw.githubusercontent.com · 1 Oct 2026
DreamPicoPort: DreamPicoPort support is available and can be disabled with the -Ddreampicoport=false build option.raw.githubusercontent.com · 1 Oct 2026
Linux serial feature: The --scif option pipes the serial port to /tmp/deecy/scif on Linux for use with dcload-serial.raw.githubusercontent.com · 1 Oct 2026
Known limitations: The README lists exclusion volumes and open translucent modifier volumes as missing renderer features.raw.githubusercontent.com · 1 Oct 2026
Support: The project directs users to the GitHub issue tracker for bug reports.senryoku.github.io · 1 Oct 2026
Issue intake: Issue creation is restricted in the Deecy GitHub repository.github.com · 1 Oct 2026
Licensing: The rest of Deecy is MIT licensed, while included MAME data is BSD-3-Clause licensed.raw.githubusercontent.com · 1 Oct 2026
Maker: Sen describes himself as a software developer from France and identifies the project account as Senryoku.github.com · 1 Oct 2026