Bank layouts

0: Level data
1: (more level data later)
2: (more level data later)
3:
4:
5:
6:
7:
8: dialog text
9: (more gameplay code later)
A: metatiles, enemy code, scrolling code, player code
B: (more graphics later)
C: (more graphics later)
D: compressed graphics
E: variable width font code + font, voice sample code + samples, music engine + music, level select, inventory, level postprocess
F: boot, main loop, level decompression, graphics decompression, math, dialogs, miscellaneous code