The ndstool
can show header information of ROM files as well as extract the game logo or even the whole ROM contents. It also can recombine the extracted ROM contents to a working ROM again.
- Homepage: darkfader.net (scroll down to DS development tools)
- Blog: ndsdev.blogspot.com
- SVN: devkitpro.svn.sourceforge.net
- Linux binary: codinglab.blogspot.com
- Python clone: jmoiron.net (limited functionality, but does UTF8)
Example output
This is from the Linux binary (see above):
Nintendo DS rom tool 1.36 - Jul 31 2007 23:26:46
by Rafael Vuijk, Dave Murphy, Alexei Karpenko
Header information:
0x00 Game title BANDBROS DX
0x0C Game code AXBJ (NTR-AXBJ-JPN)
0x10 Maker code 01 (Nintendo)
0x12 Unit code 0x00
0x13 Device type 0x00
0x14 Device capacity 0x09 (512 Mbit)
0x15 reserved 1 000000000000000000
0x1E ROM version 0x00
0x1F reserved 2 0x00
0x20 ARM9 ROM offset 0x4000
0x24 ARM9 entry address 0x2000800
0x28 ARM9 RAM address 0x2000000
0x2C ARM9 code size 0xADBB4
0x30 ARM7 ROM offset 0x172000
0x34 ARM7 entry address 0x2380000
0x38 ARM7 RAM address 0x2380000
0x3C ARM7 code size 0x26F28
0x40 File name table offset 0x198F28
0x44 File name table size 0xBFF1
0x48 FAT offset 0x1A4F1C
0x4C FAT size 0x4BA8
0x50 ARM9 overlay offset 0xB1BC0
0x54 ARM9 overlay size 0x2E0
0x58 ARM7 overlay offset 0x0
0x5C ARM7 overlay size 0x0
0x60 ROM control info 1 0x00416657
0x64 ROM control info 2 0x081808F8
0x68 Icon/title offset 0x1A9C00
0x6C Secure area CRC 0xD9F8 (OK, decrypted)
0x6E ROM control info 3 0x0D7E
0x70 ARM9 ? 0x2000AAC
0x74 ARM7 ? 0x2380188
0x78 Magic 1 0x00000000
0x7C Magic 2 0x00000000
0x80 Application end offset 0x036DF558
0x84 ROM header size 0x00004000
0x88 ? 0x00004BA0
0x15C Logo CRC 0xCF56 (OK)
0x15E Header CRC 0xF657 (OK)
Banner CRC: 0x2934 (OK)
English banner text, line 1: _______
English banner text, line 2: ________DX
English banner text, line 3: Nintendo
ARM9 footer found.
Security data CRC (0x1000-0x2FFF) 0x6FFF
Segment3 CRC (0x3000-0x3FFF) 0x0000 (INVALID)
This is from the Python version:
Header Information:
0x00 Game title BANDBROS DX
0x0C Game code AXBJ (NTR-AXBJ-JPN)
0x10 Maker code 01 (Nintendo)
0x12 Unit code 0x00
0x13 Device type 0x00
0x14 Device capacity 0x09 (512 Mbit)
0x15 Reserved 1 000000000000000000
0x1E ROM Version 0x00
0x1F Reserved 2 0x00
0x20 ARM9 ROM offset 0x4000
0x24 ARM9 entry address 0x2000800
0x28 ARM9 RAM address 0x2000000
0x2C ARM9 code size 0xADBB4
0x30 ARM7 ROM offset 0x172000
0x34 ARM9 entry address 0x2000800
0x38 ARM7 RAM address 0x2380000
0x3C ARM7 code size 0x26F28
0x40 File name table offset 0x198F28
0x44 File name table size 0xBFF1
0x48 FAT offset 0x1A4F1C
0x4C FAT size 0x4BA8
0x50 ARM9 overlay offset 0xB1BC0
0x54 ARM9 overlay size 0x2E0
0x58 ARM7 overlay offset 0x00
0x5C ARM7 overlay size 0x00
0x60 ROM control info 1 0x00416657
0x64 ROM control info 2 0x081808F8
0x6E ROM control info 3 0x0D7E
0x68 Icon/Title offset 0x1A9C00
0x6C Secure area CRC 0xD9F8 (OK, decrypted)
0x70 ARM9? 0x02000AAC
0x74 ARM7? 0x02380188
0x78 Magic 1 0x00000000
0x7C Magic 2 0x00000000
0x80 Application end offset 0x036DF558
0x84 ROM header size 0x00004000
0x15C Logo CRC 0xCF56 (OK)
0x15E Header CRC 0xF657 (OK)
Banner CRC: 0x2934 (OK)
Japanese banner text, line 1: だいがっそう!
Japanese banner text, line 2: バンドブラザーズDX
Japanese banner text, line 3: Nintendo
ARM9 footer found.
Security data CRC (0x1000-0x2FFF) 0x6FFF
Segment3 CRC (0x3000-0x3FFF) (NYI)