General notes
=============

Font palette:
- Standard text windows:     0x4 = background, 0xF = foreground
- File select/setup windows: 0x1 = background, 0x9 = foreground

Hard-coded characters:
- 0xFD: bullet (tile 0x1DD)
- 0xFE: equip (tile 0x1DE)
- Null (tile 0x1DF)
- Background (tile 0x1FF)

0x30051EC: tile offset (usually 0x100)
0x3005228: current text palette, << 0xC
0x3005230: addresses of all 11 windows
0x3005270: address of tilemap start in WRAM, can use this to figure out X and Y

LDRB Rx,[Ry,#n]: n has range 0-31 (0x0-0x1F)
LDRH Rx,[Ry,#n]: n has range 0-62 (0x0-0x3E)
LDR Rx,[Ry,#n]: n has range 0-124 (0x0-0x7C) (0-1020 for SP- and PC-relative)

Custom WRAM: 2027FC0


Subroutines
-----------

80C980C: print next character (r0: window pointer)
80CA4BC: scroll text upwards (r0: window pointer)


Windows
-------

Window structure:
  0x00 - 0x03:  bitfield
    0x00000001: enable
    0x0000FFFE: ?
    0xFFFF0000: we're stealing these for our hacks
      0x0007:   pixel X value
      0xFFF8:   unused
  0x04 - 0x07:  start address of text being displayed
  0x08 - 0x0B:  same as above?
  0x0C - 0x13:  unused?
  0x14 - 0x17:  text address offset
  0x18 - 0x1B:  ?
  0x1C - 0x1F:  ? (some kind of offset; used when printing nameable things?)
  0x20 - 0x21:  area (width*height)
  0x22 - 0x23:  window X (text area, not including border)
  0x24 - 0x25:  window Y
  0x26 - 0x27:  window width (tiles, not including border)
  0x28 - 0x29:  window height
  0x2A - 0x2B:  relative text X
  0x2C - 0x2D:  relative text Y
  0x2E - 0x33:  ?
  0x34 - 0x35:  cursor X
  0x36 - 0x37:  cursor Y
  0x38 - 0x43:  ?
  0x44:         ?
  0x45 - 0x4F:  ?