DocBoy vs GBCC

DocBoy is a free, open-source Game Boy emulator written in C++17. It emulates the original DMG Game Boy and Game Boy Color, with M-cycle-accurate CPU emulation and T-cycle-accurate PPU emulation using a Pixel FIFO. Supported cartridge types include NoMBC, MBC1, MBC2, MBC3, MBC5, MBC7, HUC1 and HUC3. Its frontends provide save and load, save states, fast-forward, configurable palettes, screenshots and an SDL graphical menu. An optional GDB-style command-line debugger offers disassembly, breakpoints, watchpoints, stepping, rewind and memory viewing. DocBoy can also operate as a libretro core through RetroArch. Releases provide Windows and Linux executables, while the project documents an Android libretro build; RetroArch is described as supporting Android and iOS. Save states, link cable emulation and a real-time clock are listed. The project says perfect emulation remains distant and accuracy can affect performance. It uses the MIT license and accepts bug reports and proposals through issues or pull requests.

GBCC is a free Game Boy and Game Boy Color emulator written in C, with an emphasis on accurate emulation. It runs on Android, Linux, macOS, and Windows, with SDL and GTK graphical interfaces. Visual options include Dot-Matrix, Colour-Correct, and Subpixel shaders, DMG palettes, and frame blending; Colour-Correct and Subpixel are intended to reproduce Game Boy Color output accurately. It supports gamepads, adjustable turbo, screenshots, a VRAM tile display, cartridge saves with real-time clock data, and save states with automatic saving and resuming. Link emulation connects GBCC to another instance of itself. The Game Boy Printer sends output only to the terminal, and Game Boy Camera support is limited to Linux and Android. Game Boy Pocket and Super Game Boy are not supported. Installation options vary by platform, and the project describes development as ongoing but slow. Save states are binary dumps and may not work across different architectures or compilers.