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Welcome to the MegaDrivePlusPlus wiki!

MegaDrive++ is a modchip for the Sega Mega Drive (AKA Sega Genesis). It has the following features:

• EUR/USA/JAP mode switching: this effectively makes your console universal, allowing it to bypass region checks and to run all games without resorting to an adapter.
  • If you come from a PAL region, you will also be able to run most games at 60 Hz, which means full-speed and full-screen! Get rid of those black bars! See the difference here!
  • The mod is switchless, so you don't need to modify the aesthetics of your console installing ugly switches, but rather you will be able to change the region:
    • Through the Reset button: Keep pushed to cycle through modes.
    • From the Player 1 controller pad: Press Start + B + Up/Down to cycle through modes or Start + Down/Left/Right to set a certain mode (according to the actual chip you have installed, more on this below).
  • The last used mode is saved automatically after 5 seconds and reused at power up.
  • Supports a single led, common-anode or common-cathode dual or RGB LEDs to indicate the current mode (Colors can be set to any value when PWM pins are available).
• Reset-From-Pad (AKA In-Game-Reset AKA IGR): Press Start + A + B + C.
  • Supports consoles with both active-high and active-low reset signals by autosensing (i.e.: all console revisions!).
• Uses a cheap Arduino Nano board.
• Even though default settings are recommended, everything can be customized to taste.
• Uses the popular Arduino environment, allowing for easy development, testing and modifications.
• Last but not least, it is Open Source and Free Software!

If you are interested in modding your console with MegaDrive++, please proceed to the Installation page!