THE iDOLM@STER/Notes

Abbreviations

Idols

Abbreviation	Full Text	Notes
ami	Ami Futami
azu	Azusa Miura
chi	Chihaya Kisaragi
har	Haruka Amami
ior	Iori Minase
mak	Makoto Kikuchi
mam	Mami Futami
mik	Miki Hoshii
mis	Miki Hoshii (awakened)	"MIki Special"
rit	Ritsuko Akizuki
yay	Yayoi Takatsuki
yuk	Yukiho Hagiwara

Songs

Abbreviation	Full Text	Notes
age	Agent Yoru o Yuku
aoi	Aoi Tori
fir	First Stage
gmw	Go My Way!
hwg	Here We Go!!
mah	Mahou o Kakete!
mas	Massugu
mbf	My Best Friend
oha	Ohayou!! Asagohan
omo	Omoide o Arigatou
pm9	9:02pm
pos	Positive!
rel	relations
tai	Taiyou no Jealousy
tim	THE IDOLM@STER
wat	Watashi wa Idol♥

Scratchpad Filesystem

BNA archives store files in folders that do not exist on the ROM.

For example, /root/bg3d/b3d_audition_a1_ill_wat.bna exctracts a file into the folder /root/bg3d/audition_a1/ but does not create this folder itself. /root/bg3d/audition_a1.bna does create this folder, indicating something in memory is keeping track of files.

File Formats Under Research

BXR Files (Bandai? Xbox? Resources)

BXR Format

Entry	Size	Notes
Magic Header	0x4	"BXR0"
Unknown Data?	Varies with number of resources cataloged	Bulk of research to be done here
Resource Listing	Varies with number of resources cataloged	Plaintext, separated with 0x00

AIX Files (Audio? I???? X????)

Criware proprietary audio format. Seems to be an archive?

AIX Files

Entry	Size	Notes
Magic Header	0x4	"AIXF"
Metadata Header?	0x43?	Some kind of metadata for the file as a whole?
Subfiles Metadata Table	0x17B3	Table of data for subfiles. Each entry 0x10 bytes. If less than 0x17B files, remaining entries are zero filled.
Subfiles Headers?	0x6A per subfile	"(c)CRIAIXP" + [HEADER DATA] + 0xFF 0xFF 0xFF 0xFF
Subfile Data	Varies
Zero Filled Footer?	????	Unsure if part of final subfile or AIX

NSH (Namco SHader)

"Stored" in /root/effect/ scratchpad file system, found in /root/initialTemp/initialTemp.bna. Appears to be mostly SM 3.0 DXBC.

NSH Format

Offset	Entry	Size	Description
0x0	Magic	0x4	"NSXR"
0x4	File size	0x4	Size of the entire NSH
0x8	Number of Shaders in archive?	0x1?
0x9	Constant data? Number of combined VS/PS?	0x7?	0x00 0x00 0x01 0x00 0x00 0x00 0x00
0x10	Unknown Header/Padding	0x10
0x20	Unknown	0x18	Unknown header/DXBC
0x38	Size of DXBC/ucode?	0x4	Always equal to total file size - 32 byte NSH header
0x3C	Unknown	0x44	Unknown header/DXBC
0x80	Offset Table	0x80 (0x10 per entry)	Offsets from start of DXBC to various sections of DXBC Each entry is composed of a DWORD offset from end of NSH header (ex - 0xE0 points to 0x100), an unknown DWORD, a length DWORD and a second unknown DWORD Currently known entries are Vertex Shaders, Pixel Shaders, Vertex Shader Globals and Pixel Shader Globals
0x100	Shader ucode	Varies	Compiled with XDK 4025. See Xbox 360/Hardware information/Xenos (GPU) for more info

This WIP hexpat can be used with imHex to more easily view nsh files

#pragma description Namco 360 Shader
//#pragma magic [4E 53 58 52] @ 0x0 //broken in some versions of imHex
//#pragma endian big //broken in some versions of imHex

struct dxbcOffsetTable { //Some of these might not exist, indicated by zeroes
	be u32 VSPtr [[color("BCBD22")]];
	be u32 VSUnknown1 [[color("FF7F0E")]];
	be u32 VSLength [[color("17BECF")]];
	be u32 VSUnknown2 [[color("1F77B4")]];
	be u32 PSPtr [[color("BCBD22")]];
	be u32 PSUnknown1 [[color("FF7F0E")]];
	be u32 PSLength [[color("17BECF")]];
	be u32 PSUnknown2 [[color("1F77B4")]];
	be u32 VSGlobalsPtr [[color("BCBD22")]];
	be u32 VSGlobalsUnknown1 [[color("FF7F0E")]];
	be u32 VSGlobalsLength [[color("17BECF")]];
	be u32 VSGlobalsUnknown2 [[color("1F77B4")]];
	be u32 PSGlobals [[color("BCBD22")]];
	be u32 PSGlobalsUnknown1 [[color("FF7F0E")]];
	be u32 PSGlobalsLength [[color("17BECF")]];
	be u32 PSGlobalsUnknown2 [[color("1F77B4")]];
	be u32 paddingUnknown3[16] [[color("D62728")]];
};

struct dxbc {
	be u32 unknowndxbcHeader[6];
	be u32 dxbcSize;
	be u32 paddingUnknown2[17];
	dxbcOffsetTable dxbcTable;
};

struct nshHeader {
	char MAGIC[4];
	be u32 nshSize;
	u8 numShaders;
	u8 unknown[7]; //possibly number of VS+PS pairs
	be u32 paddingUnknown1[4];
	dxbc ucode;
};


struct vertexShader {
	be u32 VSMagic; //10 2A 11 01
	be u32 unknown[11];
	be u16 shaderType; //FF FE
};

struct pixelShader {
	be u32 PSMagic; //10 2A 11 01
	be u32 unknown[11];
	be u16 shaderType; //FF FF
};









nshHeader root @ 0x0;
vertexShader vs @ 0x100;
//pixelShader ps @ 0x100; //should actually be at where root.ucode.dxbcTable.PSPtr points to