Hacking 3DS Flashcard with 2 memory chips?

[YoshiInAVoid]

I have an idea for a 3DS flashcard based on Crown 3DS, GBA Exploder and EZ Flash 3-In-1.

Similar to if you were using a DS Lite with a normal DS mode Slot 1 flashcard and an EZ Flash 3-In-1 in Slot 2 where you would have been able to choose ROMs through the Slot 1 running GBA Exploder and when you selected a GBA ROM in NOR mode it would have written the GBA ROM to the EZ Flash where it would make a 1:1 copy of a GBA Card and you could run it though the normal DS firmware.

The card will have a switch on top of it, when the switch is on one way it will use the first memory chip and when the switch is flicked it will use the second memory chip.

On the first memory chip is a regular DS mode flashcard however, when you are in this mode if you select a 3DS ROM it will write it to the second memory chip inside the flashcard.

When you flick the switch to use the other memory chip which has the 3DS ROM on it, it will act like a 1:1 copy of a 3DS card, just like Crown 3DS would do however you can change the ROM directly on the 3DS without a computer by switching back into the DS mode part of the flashcard.


Do you think this could work? It would be quite expensive and might even need to stick out a bit like the early Action Replays but it might work.

 

[PsyBlade]

- already proposed many time
- read the hacking theories thread
- post things like this there

- under the assumption of 1:1 3ds flash cards it would work
- which does not hold atm

 

[RupeeClock]

For such an idea, it would probably be better to have the switch on the side of the cartridge, requiring removal to switch between supposed 3DS and DS modes.
Trying to perform a switch between the two modes whilst still loaded in the 3DS might cause it to throw a tantrum.

But being able to reflash the 3DS chip to handle a new ROM and save-data via the DS mode with a dedicated 3DS game manager...if it happens that would be fantastic!
3DS and DS games support! Convenient switching of 3DS games without the use of a PC! (Assuming the necessity of running a flashed 3DS at a time)

 

[PsyBlade]

If you use tri state logic you can probably leave the card in.
Putting all connections to Hi-Z for a short time should make the 3DS think that it was removed.

Switching to 3DS mode automatic on exiting selection menu (finished write or quiting via some menu function)
Switching to menu mode via physical button on cartridge.
Default selectable

 

[RupeeClock]

In that case, a switch on the top would be better as you could also add a nub to the end of the switch, similar to the power-switch of the original Gameboy that prevented Gameboy Color only titles from being able to run.

A similar switch could be used to prevent putting the flashcart in a DSi or DS Lite, when switched to 3DS mode.

 

[Tom Bombadildo]

The thing that sucks about making a 1:1 3DS flash card? There are some games were made differently than others, meaning you'd have to somehow accommodate every single one, making the card either impractically long or ridiculously fat.

 

[Rydian]

^ - Which is probably one of the main issues Crown3DS ran into.

 

[Kikirini]

Sure, it'd be nice if that could be done... but the 3DS probably won't be cracked for a while. I suppose you should save this idea for when that happens.

 

[MelodieOctavia]

http://gbatemp.net/topic/307018-awesome-3ds-hacking-theories/