Build Instructions

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• 1

  Step 1

  Here is a rough overview of what i did to get it al working, some steps are more detailed than others, i will try to share as much as i can.

  1. Download the porta pi image (google it), this is a pre-configured pack of retropie and emulationstation and has a bunch of emulators installed.

  2. Mount it on a SD card using Win32 Disk Imager.

  3. Edit the GPIO mapping (See step 2).

  4. Place your roms on a USB stick and transfer them to your Raspberry Pi and place them in the correct folders inside /home/pi/RetroPie/roms (for examle, place your GBA games inside /home/pi/RetroPie/roms/GBA).

  5. For the GBA emulator to work you need to download a BIOS and place it on your pi, see step 3 for detailed instructions.

  6. Getting the startup splash screen to work (see step 4).

• 2

  Step 2

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  Edit GPIO mapping :

  1. Open retrogame config file :

  CD /home/pi/Retrogame
  
  sudo nano retrogame.c

  
  

  2. Scroll down until you see the input array.
  

  3. For a 1-player arcade machine you need to remove the player 2 inputs for it to work.

  4. Edit the GPIO pin numbers for player 1 arcording to your wiring.

  5. Press CTRL + O to save your changes

  6. Press CTRL + X to exit the editor

  
  

  7. Make the file and reboot :

  make
  
  sudo reboot

  
  

  
  

• 3

  Step 3

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  Getting the GBA emulator to work :

  1. Download gba_bios.bin.

  2. Transfer gba_bios.bin to /home/pi/retropie/BIOS from a USB stick.

  3. Reboot your pi :

  sudo reboot

  
  

  4. Move the file to it's destination folder :

  cd /home/pi/RetroPie/BIOS
  
  sudo cp gba_bios.bin /opt/retropie/emulators/gpsp/raspberrypi

  
  

  5. Start emulationstation :

  emulationstation

  
  

  6. Configuring input controls for the GBA emulator :

  Open any game.

  Press F10 while in the game.

  Choose the 'input keyboard' option.

  Here you can change your keyboard inputs.
  

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