FF6 Steam Version

I worked a bit on the rom.bin map (literaly a GBA JAP version map). Thank to Drakkhen for some entries as his contribution is about 50%.

U = untested
T = successfully tested
F = Testing did no change in game (failure) <- nothing so far
DAT = Data
PTR = Pointers
MAP = Map related data

Code:

520000-53B3E7  U MAP    Location Tile Assembly (Variable * 76 entries)
53B3E8-53B4CB  U PTR    Pointers to Location Tile Assembly (3 bytes each * 76 entries)
548446-58B274* U MAP    Location Map Data (Variable * 351 entries*) *SNES data, probably different considering Dragon's Den map(s)    
5F589A-5F58EF  U MAP    Pointers to Location Tile Properties (2 bytes * 43 entries)
5F5EF0-5F6231  U PTR    Map event triggers pointers (2 bytes each * 417 entries) point to a map?
5F6232-5F78ED* U DAT    Event triggers (5 bytes each) *Potential Ending of data according to data format
5F78EE-5F7C3B  U DAT    Monster Sketch Commands (2 bytes * 423 entries)
5FCE18-5FD017  U DAT    Monster Rage Commands (2 bytes * 384 entries)
61B928-61C33B  U DAT    Monster Formation Auxiliary Data (4 bytes each * 645 entries)
61C33C-61E906  U DAT    Monster Formation Data (15 bytes each * 645 entries)
62A000-62A47F  U DAT    Shop Data (9 bytes each * 128 entries)
62A480-62A5D4  U DAT    Esper Data (11 bytes each * 31 entries)
62A618-62AA53  U DAT    Colosseum Battle Data (4 bytes * 271 entries)
62ACAC-62B22A  T DAT    Character Initial Statistics (22 bytes * 64 entries)
62B61C-62BC33  T DAT    Chest data (5 bytes each * 312 entries)
62BC34-62CC1D  U DAT    Magic Data (14 bytes each * 291 entries)
62CC64-62EC25  U DAT    Item Data, regrouping weapon, armors, relic, etc.. (30 bytes each * 270 entries)
679800-679873  U PTR    Pointers to Battle Event Scripts (2 bytes each * 58 entries)
679874-679CFF* U DAT    Battle events scripts (*approximate ending according to last pointer and following data in SNES ROM).
6E1880-        U MAP    Location Properties (417+ elements, 33 bytes each)
711190-71198F  U DAT    Assigment of monsters formations (8 byes each * 256 entries)
71BB9C-71C238  U DAT    Monster item stolen / dropped (4 bytes each * 423 entries)
71D34C-71D68D  U PTR    NPC data pointers (2 bytes each * 417 entries) -> point to a map?
71D68E-7223A7* U DAT    NPC data (9 bytes each, 2193+ entries) -> *Ending offset of SNES data
726B86-727221  U DAT    Monster control commands (4 bytes each * 423 entries)
727FD8-728325  U PTR    AI Script Pointers (2 bytes  * 423 entries)
735A82-735E9F  U PTR    Pointers to Entrance Triggers (2 bytes * 527 entries?) -> some unused ones at end of data?
735EA0-737915* U DAT    Entrance Triggers (6 bytes each) *End of SNES data
728326-72C9E7  T DAT    Monster AI (423 entries)
7379A6-73AE86  T DAT    Monster stats (32 bytes each * 423 entries)
75BDFC-75E247  U MAP    Location Tile Properties (Variable * 43 entries)
79F400-79F5FF  U DAT    Magic Points Earned per Monster Formation (1 byte * 512 entries)
7A0000-7E90FA  T DAT    Events
7FF88E-7FFBF1  U DAT    Monster Event Formation Packs (4 bytes * 217 entries)