Pmd2 eos asm locations

Overview

This page contains list of the interesting offsets within the game's binaries. The offsets are NDS memory relative, because that's more useful that bin files offsets. Just subtract the binary's load address to get its respective file offset.

Functions

Functions pointers and some documentation on them.

ARM9 Bin (0x2000000)

Name	Offset NA	Offset EU	Offset JP	Parameters	Return value	Description
MemAlloc	0x2001170	NA	NA	r0: alloc size r1: unknown	r0: Pointer to allocated buffer	This function allocates a buffer on the heap of the desired size, and returns a pointer to it. The second parameter's role is unclear.. It might be a flag, since it doesn't seems to change the amount of memory allocated. It can be set to 0.
MemFree	0x2001188	NA	NA	r0: buffer to free	none	This function free a buffer that was allocated by MemAlloc.
ZeroFill	0x2003250	NA	NA	r0: Buffer to fill r1: Length to fill	none	This function fills the given buffer with zeros.
LoadFileFromRom	0x2008C3C	NA	NA	r0: PtrReturnStruct(Struct is 2 32bits integers, first is ptr of file buffer, second is loaded file length) r1: PtrStrFilePath (Ptr to path to the file to load) r2: Unknown (Set to 0 usually)	Unknown	This function will load a file from the rom filesystem into a heap allocated buffer. The function allocates the buffer, and fill it with the file data. The address to the buffer containing the file data and its size in bytes are put one after the other into the 8bytes of memory pointed by r0 when running the function!
DebugPrint	0x200C240	NA	NA	Unknown	none	This function would print to the debug log a printf formated string. But in the retail game it does nothing. Its interesting to note that its still called in the released games and is passed various debug strings and value which can be really useful for research!
HandleSIR0Translation	0x201F4B4	NA	NA	r0: PtrToPtrSIR0BegOfData r1: PtrSrcFileBuffer	none	This function translates the offsets of a SIR0 file, and change the magic number in the header to SIRO. It places a pointer to the first pointed location in the SIR0 header into the ptr pointed to by r0.

Static Variables

Addresses of static variables and buffers.

Constants

Addresses of static constant values.

ARM9 Bin (0x2000000)

Name	Offset NA	Offset EU	Offset JP	Length(bytes)	Type	Description
PackFilesPathsTable	0x20AF6A0	NA	NA	24	char*[6]	Contains a list of pointers to path strings to all known pack files. The game uses this table to load its resources when launching dungeon play! Should contain pointers to the strings: "MONSTER/monster.bin" "MONSTER/m_attack.bin" "MONSTER/m_ground.bin" "EFFECT/effect.bin" "DUNGEON/dungeon.bin" "BALANCE/m_level.bin"