Can I just offer some advice to those people modifying their Sega pads to work on Amigas.
DO NOT USE THE C BUTTON!!! This is Fire 2 on the Amiga and is used by many games! If you are going to assign a button to be used as the UP direction for your games, please use A! It's unused and not connected for use on Amigas, so changing it won't effect any Amiga games, but changing C will make all those great games that already were designed for 2-button pads to not work properly! The B button as we all know is Fire 1 on Amigas.
You can modify a Sega pad so that all seven buttons (on a 6-button+Start pad) will work with Amiga games that support such a modified Sega pad. Some Amiga games make use of a modified 3-button pad (so A,B,C and Start work) and at least one game supports all the buttons.
There was a thread started about control pad and joystick modification here but it went nowhere, please feel free to bump it and continue the conversation because we need to spread awareness about Amiga control methods, especially as old joysticks become harder to find but we can still get Sega pads brand new.
Check here for more details -
http://www.amiga.org/forums/showthread.php?t=50705Of course there's still the Competition Pro, a joystick with four buttons on it that all do the same thing (Fire 1). But that's okay, because it has a switch on it to disable two of the buttons. (



??) These are still in production and are great for Commodore 64s and 1-button Amiga games.
Now, WHDLoad! It already has the ability to remap keystrokes to button presses, but it's not global, it depends on the slave author to add the extra code to the install. Many WHDLoad games already have 2-button/CD32 pad patches applied, and you can now use a jump button in games like Ruff 'n' Tumble and New Zealand Story, as well as activate special weapons from a button rather than a key in Golden Axe and Battle Squadron, among other games. If there's a game that you think needs to have the keys remapped to 2-button or CD32 pads, let the author of the slave know and they might update it for you!