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Welcome to the MegaDrivePlusPlus wiki!

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

Features

• EUR/USA/JAP mode switching: this effectively makes your console universal, allowing it to bypass region checks and to run all games with 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! The mod is also 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 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 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.
• Uses cheap Atmel AVR microcontrollers.
  • Can be flashed on different chips (ATtiny's, ATmega's, or even a full Arduino board), but please note that not all features are supported on all chips, depending on the number of available I/O pins, please read on for details.
  • If flashed on an ATtinyX4(A), it is pin-to-pin compatibile with the D4s/Seb mod.
• Even though default settings are recommended, everything can be customized to taste.
• Uses the widespread Arduino environment, allowing for easy development, testing and modifications.
• Last but not least, it is Open Source and Free Software!

Use the links on the right to browse among the available pages!