Simple passive device that breaks out the joystick port on the Amstrad CPC 464 computer so that two Atari-style joysticks can be used, it is based on an article in the magazine Amstrad Action (scans available on CPCWiki). Note that because there are no active components, this will not work with joysticks that have any active electronics (commonly used by autofire circuits). A second fire button has also been added, this matches the pinout usually associated with Sega Master System gamepads (will not work with the controllers for Sega Genesis or Mega Drive).

There is an additional faceplate available for this project, this is mainly there to add the appearance of putting it all in a box without breaking out a hacksaw (it is also shown as installed in the pictures). This is completely optional and don't serve any purpose other than making it all look rather stylish (mostly according to me). I made it reversible so that two designs could be featured, graphics are not in my bag of tricks - so at the moment they should be considered placeholders.

I had issues getting the C64 JoyKEY working out of the box with the Amstrad CPC 464, mainly because of the slightly irregular pinouts I suspect - it works when used through this adapter (which is why it's in the gallery pictures). All single button Atari-style controllers should work - as already mentioned, the classic Sega Master System gamepad or one of the new ArcadeR joysticks should also work nicely with the splitter.