Scenario - You're booting Dreamcast games from GameEx via NullDC. However, you have to set up the game settings each time. Some games require change of graphics/sound settings and key mappings to your cab controls are very different across games. Solution: This approach saves the configs for each game when you exit Demul. Use: Run game. Set up controls via NullDC menu. Exit Game. Next time you load that game, the controls will be recalled. How to: 1. Make a folder somewhere for your individual game controls 2. Copy this text and make a bat file: 3. Change the User Variables Section to match your system. Save it as a batch file (use notepad - put .bat at end of filename) 4. In your command line for GameEx, enter the following: {Path and bat} "[ROM]" "[ROMPATH]" "[ROMFILE]" For e.g.: C:\GameEx\AHKS_BATS\nulldc_game_settings.bat "[ROM]" "[ROMPATH]" "[ROMFILE]" 5. Copy text below into notepad and save as "[Mapping Off] Exit (Process Close) - NullDC.ini" in C:\GameEx\CONFIG\EMULATORS