This page was last modified 10:58, 15 April 2019 by Mars2000you. Based on work by Gdx and Grauw.



JoyMega is a DIY adapter that allows to connect Sega Genesis/Mega Drive game controller to MSX. By default, buttons B and C correspond to the buttons A and B of MSX. The adapter can support until 8 buttons (A,B,C, Start, Mode, X,Y,Z).

Some games are patched to use additional buttons (instead of keyboard keys for example).

If you use the loader sofaRom (See links below) by Louthrax you can set a keyboard key on each button.

This adapter is sold on Internet but can be made easily if you know a bit soldering. (See links below)

Some people say that JoyMegas made with a transistor are problematic with MSX's designed with an FPGA (OCM). So prefer the version with chip if you have an 1ChipMSX or Neo Zemmix.


DIY JoyMega adapter
DIY JoyMega adapter
JoyMega adapter by MSXCalamar
JoyMega adapter by KMTech
JoyMega adapter by RoadFighter

Patches that allows to play with the extra buttons

Games/Software that support extra buttons