Crystal, Dead, Jump, Petrify

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BATTLE.BIN :  -  Crystal, Dead, Jump, Petrify, and Treasure check:
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Parameter : r4 = Pointer to unit battle data (801908cc)
Return : r2 = 0x01 if unit ID = 0xff (do not exist)
         r2 = 0x01 if unit is Crystal / Dead / Treasure / Jumping / Petrified
         r2 = 0x00 by default
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0018da44: 90830001 lbu r3,0x0001(r4)         |Unit ID
0018da48: 340200ff ori r2,r0,0x00ff          |
0018da4c: 1062000c beq r3,r2,0x0018da80      #If Unit does'nt exist branch to END return r2 = 0x01
0018da50: 34020001 ori r2,r0,0x0001          |
0018da54: 90820058 lbu r2,0x0058(r4)         |Load 1st set of Current Status
0018da58: 00000000 nop                       |
0018da5c: 30420064 andi r2,r2,0x0064         |
0018da60: 14400007 bne r2,r0,0x0018da80      #If Crystal, Dead, Jump : branch to END return r2 = 0x01
0018da64: 34020001 ori r2,r0,0x0001          |
0018da68: 90820059 lbu r2,0x0059(r4)         |Load 2nd set of Current Status
0018da6c: 00000000 nop                       |
0018da70: 30420081 andi r2,r2,0x0081         |
0018da74: 10400002 beq r2,r0,0x0018da80      #If not Petrify nor Treasure : branch to  END return r2 = 0x00
0018da78: 00000000 nop                       |
0018da7c: 34020001 ori r2,r0,0x0001          |Return r2 = 1  if petrify or treasure
0018da80: 03e00008 jr r31 
0018da84: 00000000 nop 

Return locations

BATTLE.BIN
 0018d7dc: Poison_and_Regen
 0018d87c: Transparent_removal_routine
 0018daa8: Poison_Marsh_Routine