In this example, this tells GBEmu to map the Up button on the Game Boy to the W key. With one exception (see the 'Key' option definition below), config.txt is case insensitive.Īn example configuration line looks like the following: Any changes made to this file will be reflected in GBEmu on the next launch. When GBEmu starts up for the first time, this file is created and populated with default configuration. Each line represents a different configuration.

Start Back (Options Touchpad Button for PS4) - Start, Select respectivelyĬonfig.txt is a file that lives in the GBEmu Home Directory which contains configuration, such as keyboard and gamepad controls, for GBEmu.

D-Pad or Left Analog Stick - Up, Down, Left, Right.

Ctrl (Command on Mac) - 0 to 9 - Save current states 0 to 9.

0 to 9 - Load saved state from slots 0 to 9.

Ctrl (Command on Mac) - N - Show emulator controls.

Ctrl (Command on Mac) - B - Launch debugger screen.

Ctrl (Command on Mac) - U - Mute sound.

Ctrl (Command on Mac) - F - Toggle fullscreen.

Ctrl (Command on Mac) - R - Reset emulation.

Ctrl (Command on Mac) - P - Pause and unpause emulation.H - Briefly display GBEmu Home Directory in the title bar.N - Next instruction when emulator is paused, including when a breakpoint is hit.W S A D - Up, Down, Left, and Right, respectively.The following mappings are the default keyboard mappings for a US keyboard (they have changed since version 0.0.1): However, any emulator action can be mapped to the controller in config.txt. Both keyboard and controller controls can be changed in config.txt.īy default there is a bunch of functionality available on the keyboard that is not currently mapped to the controller (e.g. For example, the Game Boy A button on a standard French keyboard would be = instead of /.

If you do not use a US keyboard, the keyboard controls are automatically determined by 'translating' US keyboard mappings into your keyboard language. A list can be found here.ĭefault emulator controls for US keyboards are in the Keyboard section below. Xbox One/360, PS4, PS3, controllers are included. Any controller supported by SDL2 should be supported. GBEmu supports both keyboard and controller input.

-d - Start with the debugger screen up and emulator paused.

A ROM can also be opened from the command line. When running from the GUI an open dialog will be prompt to open a Game Boy ROM from the ROMs folder in the Home Diretory (see the Home Diretory). Finder, Windows Explorer) or the command line. GBEmu can be run from a standard GUI file manager (e.g. Right now it works on Mac, Windows and Linux. Some distinctive features include a ROM debugger, a rewind system and easy-to-use quick save and restore slots. GBEmu (working title) is a Game Boy Emulator written in a C-style C++ (using some C++11 features like auto) and SDL2 (and a tiny bit of GTK3 on Linux).

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