SameBoy/README.md

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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
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* High quality 96KHz audio
* Battery save support
* Save states
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* 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
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* Advanced text-based debugger with an expression evaluator, disassembler, conditional breakpoints, conditional watchpoints, backtracing and other features
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* Emulates [PCM_12 and PCM_34 registers](https://github.com/LIJI32/GBVisualizer)
* Emulates LCD timing effects, supporting the Demotronic trick, [GBVideoPlayer](https://github.com/LIJI32/GBVideoPlayer) and other tech demos
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* Extermely high accuracy
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* 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
* Optional frame blending
* Several [scaling algorithms](SCALING.md) (Including exclusive algorithms like OmniScale and Anti-aliased Scale2x)
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* GameBoy Camera support
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## Compatibility
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SameBoy passes many of [blargg's test ROMs](http://gbdev.gg8.se/wiki/articles/Test_ROMs#Blargg.27s_tests), as well as most of [mooneye-gb's](https://github.com/Gekkio/mooneye-gb) acceptance tests. SameBoy should work with most games and demos, please [report](https://github.com/LIJI32/SameBoy/issues/new) any broken ROM. The latest results for SameBoy's automatic tester are available [here](http://htmlpreview.github.io/?https://github.com/LIJI32/SameBoy/blob/automation_results/results.html).
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## 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](https://github.com/bentley/rgbds/releases/), for boot ROM compilation
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On Windows, SameBoy also requires:
* Visual Studio (For headers, etc.)
* [GnuWin](http://gnuwin32.sourceforge.net/)
* Running vcvars32 before running make. Make sure all required tools and libraries are in %PATH% and %lib%, repsectively.
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To compile, simply run `make`. The targets are cocoa (Default for OS X), sdl (Default for everything else), bootroms and tester. You may also specify CONF=debug (default) or CONF=release to control optimization and symbols, and specify BOOTROMS_DIR=... to a directory containing precompiled dmg_boot.bin and cgb_boot.bin files, otherwise the build system will compile and use SameBoy's own boot ROMs.
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SameBoy was compiled and tested on OS X, Ubuntu and Windows 7 32-bit.