Vertical Mapscroll

Just something quick I've done (map is also just quickly drawn)
Normally the map consists of an 2x1 area, with a little tweaks (thanks to Scyzer for helping me on this) it is possible to turn it into a 1x2 area.
I've outlined the borders to know where I had to stop the map scroll.
The code is not polished yet, and I'm still missing out the map icons to get drawn correctly, but overall it nicely breaks up the old scheme of Super Metroid maps :)