NARC - Nitro Archive

Author(s): Gonhex
Research: (see sections)

Nitro archives are virtual file systems (fs) nested into the fs of the ROM. They are often used to group related files at the final branches of the file tree.

Table of Contents

• Data Structure
  • File Container
• Specification
  • Sections

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Data Structure

File Container

struct ContainerFileNARC
{
    /* 0x00   */ struct NitroFileHeader fileHeader;
    /* 0x10   */ struct ContainerSectionFATB sectionDataFATB;
    /* append */ struct ContainerSectionFNTB sectionDataFNTB;
    /* append */ struct ContainerSectionFIMG sectionDataFIMG;
}; // entry size = fileHeader.lengthFile

Field Name	Description	Data Type
fileHeader	Header of this file. fileHeader.signature = "NARC".	NitroFileHeader
sectionDataFATB	File allocation table. Stores offsets to all entries.	ContainerSectionFATB
sectionDataFNTB	File name table. Can store names of all entries.	ContainerSectionFNTB
sectionDataFIMG	File image. The data of all entries.	ContainerSectionFIMG

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Specification

Sections

• File Allocation Table
• File Name Table
• File Image