nullDC 2.0.0 vs WashingtonDC

nullDC 2.0.0 is a Sega Dreamcast emulator, with a browser option and downloadable builds for Windows, macOS, and Linux. The browser page provides a WASM embed where users can drop files to start the emulator. One startup option uses dc_boot.bin (2MB) and dc_flash.bin (128KB); the other is an .elf executable. The project describes its aim as accurate emulation. Its builds page lists v2.0.0-pre-388-g95a924b as the most recent build, dated 2025-11-10 08:17:38 UTC. Windows and macOS artifacts are listed for aarch64 and x86_64; Linux artifacts include aarch64, riscv64gc, and x86_64. The project is open source under the MIT license, which provides the software without warranty. The home page also lists older beta releases, including beta 1.6 from 2007, and a stereoscopy build from 2008. The historical beta 1 netplay server is listed as compatible only with beta 1. For help, the project directs users to its forum at ngemu.com.

washDC, formerly known as WashingtonDC, is a free, open-source SEGA Dreamcast emulator for Linux and Microsoft Windows. It is intended for playing classic Dreamcast games on a modern x86 PC and was built from scratch rather than based on another emulator. The README lists GDI, CHD, CDI, ELF, and raw BIN game image formats, and says BIOS and flash images are required to run the emulator. Controls include keyboard input and support for up to four gamepads. Remote GDB and the WashDbg debugger are listed as TCP debugging options. Wash Emulation describes itself as a one-person team and washDC as its only product to date. The project also publishes homebrew programs for examining Dreamcast behavior, including tests of PowerVR2 backface culling and memory mirroring. Its separate gdisofs tool mounts Dreamcast game images as read-only filesystems on Linux PCs. The emulator is licensed under GNU GPL version 3. The maker links to project updates, Discord, and an email contact.