Mega 7800 - Controller Adapter for Atari 7800

The RetroHQ Mega 7800 is a controller adapter which allows you to use your Master System and Genesis/Mega-Drive controllers with your 7800 or 2600. This includes Master System control pads, joysticks and also the light phaser as well as 3 and 6 button Mega Drive pads and sticks.

In normal operation the Mega 7800 lets you play 2 button 7800 and 2600 games with a more comfortable pad. In extended mode (where software has been written to take advantage of the Mega 7800) the 7800 is able to read all of the buttons available on the controller for additional gameplay control!*

The 7800 GameDrive in combination with the Mega 7800 uses the Mega Drive control pads to allow single button breaking into games (START), saving (Z) and loading (Y) of your games. This allows for the full retro gaming experience with the added comforts of an emulator! Truely the best of both worlds.

Hardware Compatibility

Atari 7800 and 2600, NTSC and PAL
Master System control pads and sticks
Master System light phaser
Mega Drive control pads and sticks
Wireless adapters such as the 8BitDo Retro Receiver for the Genesis/Mega-Drive

Software Compatibility

All 7800 and 2600 games
The 7800 GameDrive
Homebrew written for the Mega 7800

* Extended operation is currently only supported on the 7800, but should be possible to access from 2600 homebrew also.

5 Reviews

5
You have to get this if you have the 7800 GameDrive

Posted by Jimmy on Oct 17th 2024

This adapter is pretty much the only way to use the 7800 GameDrive to its best potential. You can access the in-game menu, as well as use a much more comfortable controller. I currently use mine with a RetroBit Big6 (wired) controller, since the original Genesis controller is (imo) the best retro controller for people with big hands. I tried using the 8BitDo M30, but there was a lot of delay. With the Big6, I have zero delay.
5
Amazing

Posted by Kaitlyn Vachhani on Jul 10th 2024

I love this product. It works perfectly for Sega Genesis controllers on the 7800, and also on the Retron 77. Absolutely amazing customer service. I failed to enter the correct shipping address at first, and Stone Age helped me to recieve my order.
5
Great for Genesis type controllers

Posted by Willie Kerner on Mar 15th 2024

Works great for connecting my Retro-bit Genesis controller to my Atari 2600+.
5
Mega7800 Controller adapter

Posted by AC on Feb 5th 2024

I took a chance on this product because I just bought an Atari 2600+ and I couldn`t find any information about compatibility. I was pleasantly surprised to see that it was a perfect plug and play solution. I used it with a 6 button Genesis controller and it immediately lit up with a green LED and worked perfectly with 7800 and 2600 games. I will be buying another one!
5
Mega 7800 Controller Adapter

Posted by Matthew Stapleton on Jan 20th 2024

The adapter is plug and play and works great. So far I’ve used it on both Sega Master System and Genesis controllers. It has a LED light will automatically detect exactly which controller you’re actually using.