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SameBoy

SameBoy is an open source Gameboy (DMG) and Gameboy Color (CGB) emulator, written in portable C. It has a native Cocoa frontend for OS X, and an incomplete experimental SDL frontend for other operating systems. It also includes a text-based debugger with an expression evaluator.

Features

Features common to both Cocoa and SDL versions:

  • Supports Gameboy (DMG) and Gameboy Color (CGB) emulation
  • Lets you choose the model you want to emulate regardless of ROM
  • Includes open source DMG and CGB boot ROMs:
    • Complete support for (and documentation of) all game-specific palettes in the CGB boot ROM, for accurate emulation of Gameboy games on a Gameboy Color
    • Supports manual palette selection with key combinations, with 4 additional new palettes (A + B + direction)
    • Supports palette selection in a CGB game, forcing it to run in 'paletted' DMG mode, if ROM allows doing so.
    • Support for games with a non-Nintendo logo in the header
    • No long animation in the DMG boot
  • Has a text-based debugger with an expression evaluator
  • Emulates PCM_12 and PCM_34 registers
  • Emulates LCD timing effects, supporting the Demotronic trick, GBVideoPlayer and other tech demos
  • Accurate instruction and memory timings
  • Real time clock emulation

Features currently supported only with the Cocoa version:

  • Native Cocoa interface, with support for all system-wide features, such as drag-and-drop and smart titlebars
  • Retina display support, allowing a wider range of scaling factors without artifacts
  • High quality 96KHz audio
  • Battery save support
  • Save states
  • Optional frame blending
  • Several scaling algorithms (Including exclusive algorithms like OmniScale and Anti-aliased Scale2x)

Compatibility

SameBoy passes many of blargg's test ROMs, as well as most of mooneye-gb's acceptance tests. SameBoy should work with most games and demos, please report any broken ROM.

Compilation

SameBoy requires the following tools and libraries to build:

  • clang
  • make
  • Cocoa port: OS X SDK and Xcode command line tools
  • SDL port: SDL.framework (OS X) or libsdl (Other platforms)
  • rgbds, for boot ROM compilation

On Windows, SameBoy also requires:

  • Visual Studio (For headers, etc.)
  • GnuWin
  • Running vcvars32 before running make. Make sure all required tools and libraries are in %PATH% and %lib%, repsectively.

To compile, simply run: make [CONF=(release|debug)] (cocoa|sdl|bootroms)

SameBoy was compiled and tested on OS X, Ubuntu and Windows 7 32-bit.