Here is a non-exhaustive list of keys that can be altered in a .retroarch.cfg type override file, these modifications can only be done if the emulator is a RetroArch core.
A * after the value means that the parameter can be overrided also via a .recalbox.conf
audio_enable = "true" : turn audio on or off.audio_volume = "0.000000" : adjust the volume gain, 0 = default volume by default.quick_menu_show_save_content_dir_overrides = "false" : show or hide the option Configuration replacement for the directory.quick_menu_show_save_core_overrides = "false" : show or hide the option Configuration replacement for the core.quick_menu_show_save_game_overrides = "false" : show or hide the option Configuration replacement for the game.Configuration overrides are a feature of RetroArch, similar to overrides, but retain a lot of information, in the context of Recalbox, better to prefer overrides if possible.
fps_show = "true" : show in-game FPS.menu_driver = "ozone" : choose the RetroArch menu, usually ozone, excepted on GPi Case, where rgui is used.menu_enable_widgets = "true" : enabling in-game popups, if set to false, will display notifications as yellow text.recording_output_directory = "" : folder where the video recordings go.savefile_directory = "" : where to save / load backups.savestate_directory = "" : where to save / load snapshot backups.screenshot_directory = "" : folder where screenshots go.ai_service_enable = "true" : activate or deactivate the translation service.ai_service_mode = "0" : translation service mode, 0: image, 1: voice.ai_service_source_lang = "0" : language to read for the translation service, 0 = not specified.ai_service_target_lang = "1" : language to translate into, 1 = English, 3 = French.ai_service_url = : internet link of the service to be used.aspect_ratio_index = "23" : ratio index, 23 = Custom.input_overlay = "" : link to the overlay configuration file.input_overlay_enable = "true" : activation of the overlay.input_overlay_hide_in_menu = "true" : overlay hidden in RetroArch menu.custom_viewport_height = ""custom_viewport_width = ""custom_viewport_x = ""custom_viewport_y = ""video_message_pos_x = "0.050000"video_message_pos_y = "0.050000"netplay_nickname = "" : Netplay nickname.video_rotation = "1" : rotates the video rendering, 0 = normal, 1 = 90 °, 2 = 180 °, 3 = 270 °, pay attention to the aspect ratio.To dissociate / associate the Directional Pad to one of the joysticks:
input_player1_analog_dpad_mode = "0" : dissociate.input_player1_analog_dpad_mode = "1" : associate with the left joystick.input_player1_analog_dpad_mode = "2" : associate with the right joystick.input_player1_analog_dpad_mode = "3" : forcefully associate with the left joystick.input_player1_analog_dpad_mode = "4" : forcefully associate with the right joystick.The settings for changing the hotkeys depend on the joystick mapping in Recalbox. If the controller changes, the configuration overloaded with these lines may no longer work.
To have the numerical value for each key of your controller, look in the file /recalbox/share/system/configs/retroarch/retroarchcustom.cfg for the value of the desired key according to this table:
| Key name | Key Value associated |
|---|---|
| A | input_player1_a_btn |
| B | input_player1_b_btn |
| X | input_player1_x_btn |
| Y | input_player1_y_btn |
| Up | input_player1_up_btn |
| Down | input_player1_down_btn |
| Left | input_player1_left_btn |
| Right | input_player1_right_btn |
| Select | input_player1_select_btn |
| Start | input_player1_start_btn |
| L | input_player1_l_btn |
| L2 | input_player1_l2_btn |
| L3 | input_player1_l3_btn |
| R | input_player1_r_btn |
| R2 | input_player1_r2_btn |
| R3 | input_player1_r3_btn |
| Left Stick to the Up | input_player1_l_y_minus_axis |
| Left Stick to the Down | input_player1_l_y_plus_axis |
| Left Stick to the Left | input_player1_l_x_minus_axis |
| Left Stick to the Right | input_player1_l_x_plus_axis |
| Right Stick to the Up | input_player1_r_y_minus_axis |
| Right Stick to the Down | input_player1_r_y_plus_axis |
| Right Stick to the Left | input_player1_r_x_minus_axis |
| Right Stick to the Right | input_player1_r_x_plus_axis |
The modifications to be made to the following values must be made in the override file.
The previous file is only used to observe the current mapping.
input_enable_hotkey_btn =: Hotkey button.input_screenshot_btn =: Button to take a screenshot.input_exit_emulator_btn =: Button to exit an game.input_load_state_btn =: Button to load a save state.input_save_state_btn =: Button to save a save state.input_menu_toggle_btn =: Button to open the RetroArch Menu.input_reset_btn =: Button to reset the emulator/game.input_ai_service_btn =: Button to translate the current screen view.For example, The Legend of Zelda: Link's Awakening on Game Boy requires to use Start + Select + A + B to save. If your controller does not have a home button, and the hotkey is on Select, natural game saving will be impossible. Putting the input_enable_hotkey_btn key on the R key of your controller for this game only can be done. The value of the input_player1_r_btn key is 4 for the R key, so you will need to enter input_enable_hotkey_btn = 4 in the game override.