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:
Spoiler
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
Spoiler
6. Finally, under Advanced config section, select the above process.
Hope this helps and let me know if buggy!
(P.S. for the potentially observant this post is directly copied from previous one for Demul - cos much the same process - not a mistake.)