CIA files are generic data containers that can be installed on a 3DS. In order to do this you need to have a 3DS below 9.2. The process of building a CIA is similar to building a.3DS file: arm-none-eabi-strip myproject.elf makerom -f cia -o myproject.cia -rsf cia.rsf -target t -exefslogo -elf myproject.elf -icon myproject.smdh -banner banner.bin. 하지만 Batch CIA 3DS Decryptor를 사용하면 PC에서도 복호화가 가능하다. 암호화된 롬파일을 폴더에 넣고, Batch CIA 3DS Decryptor.bat을 실행하기만 하면 된다. 3DS는 Trimmed(압축된) 3DS로. CIA는 CCI(3DS)로 파일이 바뀐다. DLC CIA는 CIA 그대로 바뀐다. . CIA For use with CFW. HANS RomFS, Code.Bin, and Homebrew Launcher Shortcut Planned Features: Copy private header to 0-key encrypted CCI files as they are built. Until this is done, any.3dz files created are invalid until a private header is added. Decrypted CIA extraction This also doubles as a code library for developers.

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Name	3DS
Full name	Autodesk 3D Studio Max
File extension	.3ds
MIME type	application/x-3ds, image/x-3ds
Developed by	Autodesk Inc.
Type of format
Description	3DS is one of the file formats used by the Autodesk 3ds Max 3D modeling, animation and rendering software. It was the native file format of the old Autodesk 3D Studio DOS, which was popular until its successor replaced it in April 1996. Having been around since 1990, it has grown to become a de facto industry standard for transferring models between 3D programs, or for storing models for 3D resource catalogs. While the 3DS format aims to provide an import/export format, retaining only essential geometry, texture and lighting data, the related MAX format also contains extra information specific to Autodesk 3ds Max, to allow a scene to be completely saved/loaded.
Technical details	3ds is a binary file format. Format is based in chunks, where each section of data is embedded in a block that contains a chunk identifier and the length of the data, as well as the data itself. This allows parsers to skip chunks they don't recognize, and allows for extensions to the format. The chunks form a hierarchical structure, similar to an xml DOM tree. The first two bytes of the chunk are its ID. From that value the parser can identify the chunk and decide whether it will parse it or skip it. The next four bytes contain a little-endian integer that is the length of the chunk, including its data, the length of its sub-blocks and the 6-byte header. The next bytes are the chunk's data, followed by the sub-chunks, in a structure that may extend to several levels deep.
Associated programs	AutoCAD, Unigraphics и SolidWorks.
Wiki	https://en.wikipedia.org/wiki/.3ds

General
makerom
Author(s)	3dsguy
Type	PC utility
Version	0.15
Links
Download
Source

makerom is a tool which can be used to create NCCH, CCI, and CIA files.

1Format Overviews
- 1.2CCI
- 1.3CIA
2Using Makerom
- 2.1Command line

Format Overviews[edit]

NCCH[edit]

The native format storing code binaries and data archives for the 3DS is NCCH. NCCH files are comprised of:

code/exheader/plainregion (used for code execution) (plainregion just lists included SDK library add-ons)
icon (app title text, icon, homemenu settings, see here
banner (cbmd + cwav, i.e. the upper screen banner/sound shown on the homemenu)
logo (the splash screen displayed after an application is launched from the homemenu)
romfs (read-only filesystem used to store resources)

Typical uses for NCCH files include:

Executable image (code+exheader+icon+banner+logo+romfs)
e-Manual archive (accessed from homemenu) (romfs)
DLP child CIA archive (accessed from application) (romfs)
Update Data archive (romfs)
Standalone data archive (romfs)
DLC index archive (icon+romfs)
DLC archive (romfs)

CCI[edit]

The native format for gamecard images is CCI and is a NCCH container format. CCI files are limited to containing 8 NCCH files, and can contain NCCH files for applications titles only.

NCCH configuration for CCI[edit]

NCCH	Required	Index
Executable image	YES	0
e-Manual archive	NO	1
DLP child CIA archive	NO	2
Update Data archive	NO	7

CIA[edit]

The native format for packaging NCCH files for install is CIA, which is also a NCCH container format. CIA files are limited to containing 65535 NCCH files and can be used to contain NCCH files for any title type. CIA files also contain signed data used by the 3DS for general title management and DRM. Installing custom CIA files on a 3DS which also uses eShop/SysUpdates is unwise as conflicts will likely occur.

NCCH configurations for CIA[edit]

Applications (Application/DlpChild/Demo/Patch/SystemApplication): Bangla medicine book pdf.

NCCH	Required	Index
Executable image	YES	0
e-Manual archive	NO	1
DLP child CIA archive	NO	2

System Applet/Module:

NCCH	Required	Index
Executable image	YES	0

System Data Archives:

NCCH	Required	Index
Data archive	YES	0

DLC:

The number of DLC data archives in DLC varies for each DLC.

NCCH	Required	Index
DLC index archive	YES	0
DLC data archive	YES	Varies

Using Makerom[edit]

Command line[edit]

General Arguments

Argument	Acceptable values	Notes
-f <format>	'ncch'/'cxi'/'cfa'/'cci'/'cia'	Specify the output file format. 'ncch'/'cxi'/'cfa' has no affect, probably parsed without error for legacy support.
-o <path>	Valid file path.	Specify name/path for output file. Makerom will decided a name if this is not specified.
-v	not required	Enables verbose output.

RSF Arguments

Argument	Acceptable values	Notes
-rsf <path>	Valid file path	Specify the path to Rom Specification File(RSF). See below for creating RSF.
-D<NAME>=<VALUE>	This is used to substitute where '$(<NAME>)' exists in the RSF files with '<VALUE>'. (Uppercase isn't a requirement)

Crypto Arguments

Argument	Acceptable values	Notes
-target <target>	't'/'d'/'p'	Specify key-chain. This affects encryption, signing and '-desc' template availability. t=

3ds To Cia Converter Pc