Lillian Skinner rvtr

DSi-enhanced games make use of an extended header together with other data structures which implement additional integrity and obfuscation measures over those already present in NDS games. These measures make it currently impossible to produce a ROM image that will run on unmodded retail hardware, however due to the existence of leaked debug keys, it is possible to resign retail ROMs to make them bootable on dev hardware such as the IS-TWL-DEBUGGER.

Header

A very good description of the TWL header format can be found on GBATEK. It is expanded from the 512 bytes of the DS to 4KiB, and it contains many additional entries, but I will be mainly referring to the following:

The flags field (0x1BF)
Digest sector entries (0x1E0 - 0x208)]
Modcrypt entries (0x220 - 0x230)
HMAC array (0x300 - 0x3B4)
RSA signature (0xF80 - 0x1000)

NDS RAM expansion cartridges 1.0.0

Note: This document doesn't document all existing devices. Check this instead: https://github.com/blocksds/libnds/blob/2d947e6a6709e646c3366425a840167f2ef5e9c1/source/arm9/peripherals/slot2.c

Author: AntonioND (antonio underscore nd at outlook dot com).

	#!/usr/bin/env python3

	"""
	This is free and unencumbered software released into the public domain.
	Anyone is free to copy, modify, publish, use, compile, sell, or
	distribute this software, either in source code form or as a compiled
	binary, for any purpose, commercial or non-commercial, and by any
	means.
	In jurisdictions that recognize copyright laws, the author or authors
	of this software dedicate any and all copyright interest in the

	#!/usr/bin/env python3

	# Requirements:
	# pip3 install libscrc pillow

	# For example files, see Wordle DS:
	# https://github.com/Epicpkmn11/WordleDS/tree/main/resources/icon
	# python3 dsibanner.py -i icon.*.png -d icon.0.png -t Wordle DS;Pk11 -a icon.json -o banner.bin

	"""

	#!/usr/bin/env python3

	"""
	This is free and unencumbered software released into the public domain.

	Anyone is free to copy, modify, publish, use, compile, sell, or
	distribute this software, either in source code form or as a compiled
	binary, for any purpose, commercial or non-commercial, and by any
	means.

	#!/usr/bin/env python3

	"""
	This is free and unencumbered software released into the public domain.

	Anyone is free to copy, modify, publish, use, compile, sell, or
	distribute this software, either in source code form or as a compiled
	binary, for any purpose, commercial or non-commercial, and by any
	means.

	/* This is free and unencumbered software released into the public domain.
	*
	* Anyone is free to copy, modify, publish, use, compile, sell, or
	* distribute this software, either in source code form or as a compiled
	* binary, for any purpose, commercial or non-commercial, and by any
	* means.
	*
	* In jurisdictions that recognize copyright laws, the author or authors
	* of this software dedicate any and all copyright interest in the
	* software to the public domain. We make this dedication for the benefit

	#!/usr/bin/env python3

	# Requirements:
	# pip3 install pillow

	"""
	This is free and unencumbered software released into the public domain.

	Anyone is free to copy, modify, publish, use, compile, sell, or
	distribute this software, either in source code form or as a compiled

	#!/usr/bin/env python3

	# Requirements:
	# pip3 install libscrc

	"""
	title copier © 2022 Pk11

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the “Software”), to deal

	#!/usr/bin/env python3

	# Requirements:
	# pip3 install requests

	"""
	This is free and unencumbered software released into the public domain.

	Anyone is free to copy, modify, publish, use, compile, sell, or
	distribute this software, either in source code form or as a compiled

Lillian Skinner rvtr

Header

NDS RAM expansion cartridges 1.0.0

Introduction