INT 62 u - FGDRIVER v3.03 - "FG_INITJOY" - INITIALIZE JOYSTICK USE
        AX = 004Dh
        BX = joystick number (0001h or 0002h)
Return: AX = status
            0000h successful
            FFFFh joystick not connected or no game port
Notes:  For FGDRIVER v1.10, this function was "FG_DISPLAY" (see AX=0019h);
          "FG_INITJOY" was AX=0075h
        Fastgraph assumes that the requested joystick is centered at the time
          this function is called
SeeAlso: AX=0009h,AX=0044h,AX=0046h,AX=0050h,AX=0061h

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