1. Access RetroArch Settings:
- In Emulation Station, navigate to the RetroArch settings.
2. Input Settings:
- Within the RetroArch settings menu, select `Settings` -> `Input`.
3. Configure Port 1 Controls:
- Go to `Port 1 Controls`.
4. Adjust Mouse Index:
- Inside Port 1 Controls, locate `Mouse Index`.
5. Select Device:
- Choose `HID 1241:1111` for the Mouse Index. If using the Tankstick Max, select the `HID 1241:1111` option corresponding to the trackball linked to the Red LED button. This is essential for proper functionality.
6. Save Configuration:
- Return to the main menu where `Input` is visible.
- Select `Configuration`.
- Ensure `Save Configuration on Quit` is enabled.
7. Set Up Hotkeys:
- Go back, then access `Input` and navigate to `Hotkeys`.
- Within Hotkeys, select `Quit`.
8. Map the Red LED Button:
- Press the Red LED button to assign it as the quit hotkey. If it doesn’t respond, revisit step 5 and try a different `HID 1241:1111` index.
9. Enable Hotkey Button:
- Choose `Hotkey Enable` and press the Red LED button again to finalize its mapping.
10. Exit Games Using the Red LED Button:
- With these settings, you can now exit games using the Red LED button. For convenience, it's advised to enable the `Confirm Quit` option in the Hotkeys settings to avoid unintended game exits.