Function            joystickAx - read joystick input Ax

  Syntax              unsigned joystickAx(void);

  Prototype in        ibm.h

  Remarks             reads the joystick input Ax.

  Return value        returns the joystick input Ax.

  See also            isgameport(), joystickAy(), joystickBx(),
                      joystickBy(), joysticksettings()

  Example             #include <ibm.h>

                      main()
                      {
                           while (inkey(FALSE) == 0) {
                                printf("Joystick Inputs\n");
                                printf("A: (%u,%u)\n",joystickAx(),
                                       joystickAy());
                                printf("B: (%u,%u)\n",joystickBx(),
                                       joystickBy());
                           }
                      }

  Program output      continuously polls joystick inputs and displays
                      their values until a key is pressed.