As you may already know I hate joysticks and I've made several kinds of modified Mega Drive/Saturn controller for use with other systems before. There's this PC controller that I quite like - I have several already for the PC. I also have a drawer full of spare Mega Drive controllers that are unusable due to being completely worn out, so I made another "new" controller for my Atari/Commodore/Spectrum systems.

This controller is a later revision of one that originally had switches where I put mine. One is to connect/disconnect pin 5 - which lets you use it on an Atari ST. The other is to switch Up between the C button and Up on the D-Pad - since most of the games I'll be using this with have up as jump due to them being made for joysticks.

I made one like this a while ago using a Mega Drive style controller from a Plug & Play game system (don't think I posted this one before).

I use these on my Atari ST, 130XE, 2600, C64, Spectrum and Amiga.