Emulator

Hello everybody, I'm not able to keep any button pressed on the game cube games, where you must hold the button that appears to be actually in a turbo mode.I need to hold some chains and pulls them, but what happens is that I can grab them, but soon after that I pressed the button with the loose. The same happens when I try to focus and use the sword rotary link, it should focus and stay with the shining sword, however, he attacks without stopping. Please help me and excuse me for my bad English;

I am currently using the emulator on the 6499 version x64 windows 7, the game was tested zelda four swords of the game cube, and indifferent to use the keyboard, or control of x360.