if (keystate[SDLK_z]) joypad_0_buttons[BUTTON_C] = 0x01;
if (keystate[SDLK_x]) joypad_0_buttons[BUTTON_B] = 0x01;
if (keystate[SDLK_c]) joypad_0_buttons[BUTTON_A] = 0x01;
if (keystate[SDLK_z]) joypad_0_buttons[BUTTON_C] = 0x01;
if (keystate[SDLK_x]) joypad_0_buttons[BUTTON_B] = 0x01;
if (keystate[SDLK_c]) joypad_0_buttons[BUTTON_A] = 0x01;