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07/13/2014 at 14:57
#15244
dudleydesParticipant
Each emulator has a retroarch.cfg file that will override the main config file in the all directory. To edit it, you can use the command
sudo nano /opt/retropie/configs/atari2600/retroarch.cfg
For GBC, you can change atari2600 to gbc.
For Atari 2600, I added the line below and saved the file.
video_aspect_ratio = 0.83