Instructions
Plug the PlayStation 1 controller into the PlayStation 2 console controller slot.
Insert a PlayStation 2 game disc and power on the PS2 console.
Press the directional buttons on the left side of the first generation PlayStation 1 controller to see if you are able to play the game with the same functionality as with a PS2 controller. Move the thumbsticks on a second generation PS1 controller to see if the control functions match those of the PS2 controller thumbsticks.