I bought some retro C64 joysticks for which I doubt that all buttons work correctly, e.g. acceleration in a car racing game does not work as expected. I assume it interprets one of the digital buttons as an analog value so the game accelerates with a certain percentage only.
Therefore, I'm looking for a software that
- can check all buttons (digital values)
- can check all axes (analog values)
- on Windows (7 SP1 x64)
- is gratis
Some years back I recall that such a thing was included in DirectX, but I could not find it. I have already tried dxdiag.