Function VideoWriteAddress(X1,Y1:Word):Pointer

    Updates VX and VY       : No
    Updates Cursor Position : No

    This returns a pointer to the  video  memory area for the coordinates
    (X1,Y1) for the current video card (determined by Card).

    Example

    VideoWriteAddress(1,1) = Ptr($B800,0000)

    (If Card = ColorCard.)