1f800000

Scratch Pad at 0x1f800000 (pointer at BATTLE.BIN 0x8018f4e0)

While dealing with AI Pathfinding
Used to store data of the Acting Unit (or his mount is riding)

0x02 - Jump * 2 (0x3e if fly or ignore height)    (00174430)
0x04 - Jump or 0x1f (fly / ignore height)         (00174430)
0x05 - Unit Jump/2                                (00174430)
0x06 - Unit Move                                  (00174430)
0x07 - Active Unit X (Battle 0x47)                (00174430)
0x08 - Active Unit Y (Battle 0x48)                (00174430)
0x09 - 1 if High Elevation (Battle 0x49)          (00174430)
0x0d - Active Unit ID (His Mount ID if riding)  - (00174430)
0x0e - Move Type                                  (00174430)
     0 if Fly    (00174430)
     1 Teleport   
     2 if float   
     3 if move on lava   
     4 if move on water   
     5 move in water   
     6 Move underwater   
     7 Nothing   

0x0f Move Mod : used as offset to load                      (00174430)
     Used as Offset to load Movement_modifiers_Table
     1 if Fly /Teleport
     2 if Float   
     5 Move on Lava   
     3 Move on Water/ In water   
     4 Move under water   
     0 Nothing   
0x10 Movement 3
0x11 - 1 if cannot enter water (Movement 2 0x10)            (00174430) 
       (+ not fly float move on water)
0x12 - Will Drawn Flag                                      (00174430)
            1 By default
            0 if walk on in under water
0x13 - Will Sink Flag                                       (00174430)
            1 By default
            0 if can walk in/on water (or Float)
0x14 - 1 if Unit cannot stay on water (Movement 2 0x10)     (00174430)
       (and not floating nor moving on water)
0x15 - 1 if Mountable Chocobo                               (00174430)
0x16 - Can Ride Flag ?                                      (00174430)
       1 if Human not Frog/Chicken/Charm                    
       0 if not
0x18 - Max X (800e4e9c)                                     (00174430)
0x19 - Max Y (800e4ea0)                                     (00174430)
0x1a - Byte at 0x8018f4fc                                   (00174430)
0x1b - Unit Size                                            (00174430)
         0x04 if  Frog/Chicken  
         0x06 by default  
         +0x2 if Float 
         +0x2 if Riding
0x1c - 3rd set of movement (Float* enables Move on water)   (00174430) * Movement skill not status 

0x1d - 1 if Fly/teleport                                    (00174430)
0x22 - 1 if Stepping stone (Battle 0x49 flag 0x40)          (00174430)
0x24 - 2nd set of movement if not flying but teleports
0x25 - 1 if Can pass lava  (Float or Move on Lava)          (00174430)

Note : Frog and Chicken cannot teleport nor fly
Note : Jump is caped at 0x7 , Move is caped at 0x7c