FF80 = Bunny X position (on the screen in px)
FF81 = Bunny Y position (on the screen in px)
FF82 = Current Button Direction (Up = 1, Right = 2, Down = 3, Left = 4)
FF83 = Current Sprite Direction (Moving)
FF84 = Px step inside of grid (0x00 to 0x0f)
FF85 = Last Sprite Direction
FF86 = Bunny X position (in tiles)
FF87 = Bunny Y position (in tiles)