y be <I>two</I> tile maps, stored one right after
the other in memory.&nbsp; The first tile map will contain the left 32
tiles (x coordinates 0 to 255, when using 8x8 tiles), and the next tile
map will contain the right 32 tiles (x coordinates 256 to 511, when using
8x8 tiles. Setting the scroll register to 512, then, will be the same at
setting it to zero.)

<P>A note about using 16x16 tiles:&nbsp; These are stored in exactly the
same way as 16x16 sprites; that is, the first and second rows have 14 ignored