Rom Overview Explained - haven1433/HexManiacAdvance GitHub Wiki

The Rom Overview shows you 256 squares in a 16x16 grid, where each square represents 0x10000 bytes in your rom. So for example, if you start in the upper left square and then count down 3 rows and over 2 columns you're looking at the square that represents all the data from 0x320000 to 0x32FFFF.

• Yellow-Green: Table-Data
• Blue-Green: Image-Data (palettes, sprites, tilesets, and tilemaps) is shown in blue-green
• Purple: Text-Data
• Blue: Pointers
• Gray: Unknown, usually thumb code, maps, scripts, sounds, or other data that HMA doesn't recognize automatically
• Dark Gray: Unused (free space)

Roms that have been extended to 32MB will show extra boxes for the extra data.