lowlines

Nitro Character Graphic (NCGR)

Category: Nintendo DS

Description: Common graphic format used in Nintendo DS games.

Author: lowlines

Filename: ncgr.xml

Size: 3.09 KB

Date Modified: 07 November 2019

• Nitro Header

  • Type	Name	Offset	Size	Value	Description
    	Magic Stamp	0x0000	4	0x5247434E	Stamp (RGCN) "Nitro Character GRaphic".
    u32	Constant	0x0004	4	0x0001FEFF
    u32	File Size	0x0008	4
    u16	Header Size	0x000C	2	16
    u16	# Sections	0x000E	2	1 or 2

• CHARacter Section (CHAR)

  • Type	Name	Offset	Size	Value	Description
    	Magic Stamp	0x0000	4	0x52414843	Stamp (RAHC) "CHARacter".
    u32	Section Size	0x0004	4
    u16	Height (Tiled)	0x0008	2		Height unless 0xFFFF.
    u16	Width (Tiled)	0x000A	2		Width unless 0xFFFF.
    u32	Bit Depth	0x000C	4		3 = 4-Bit 4 = 8-Bit
    u16	Unknown Height	0x0010	2		Set when Height is 0xFFFF.
    u16	Unknown Width	0x0012	2		Set when Width is 0xFFFF.
    u8	Tiled Flag	0x0014	1		If not set, image is tiled.
    u8	Partitioned Flag	0x0015	1		If set, image is partitioned.
    u16	Unknown	0x0016	2		I've only seen 0x0 here.
    u32	Data Size	0x0018	4
    u32	Data Offset	0x001C	4	0x18	Relative to start of Section + 0x8.

  • Tile Data (NTFT format)
    Data can be stored either in 4-Bit or 8-Bit format, which point to indices in a palette.

    4-Bit Mode

    Range(0, 15)

    8-Bit Mode

    Range(0, 255)

• Character POSitioning? (CPOS) - Not always present

  • Type	Name	Offset	Size	Value	Description
    	Magic Stamp	0x0000	4		Stamp (SOPC) "??".
    u32	Section Size	0x0004	4
    u32	Constant	0x0008	4	0x00
    u16	Char Size	0x000C	2	??
    u16	Char Count	0x000E	2	??