Remember the 3DS Rom Dumping Pic that Legacy released with their first 3DS Rom...
http://i.imgur.com/NBJLZ.jpg
In the bottom left of that picture is a small white box,
It is a 'Zeroplus logic cube' (LAP-C 16032?) Logic Analyzer. (costs about $140usd)
http://i.imgur.com/T4Mtq.jpg
Legacy's has 32 pins, but only 16 of them are used + 1 ground)
http://i.imgur.com/rE0fQ.jpg
At the top of the picture, there are Pink, Blue and Green ports that looks like sound ports on a motherboard...
That is a 'Terasic FPGA Altera DE1 Mainboard - Cyclone II' (costs about $150usd)
http://i.imgur.com/S0zeH.jpg
In the bottom left is a MicroSD to SD Adapter with a MicroSD inserted,
The FPGA board has a SD Slot on the side so I guess the Roms are dumped to an SD Card.
One of the 40 pin expansion ports (that looks similar to an IDE port), is connected
to a PCB board with a Cartridge slot and cartridge using a 40 wire IDE Cable.
from 3DS 0001 NFO:
| :: | P.S. Most people are probably asking themselves "HOW?". | :: |
| :: | The answer is "Yes, it is THAT simple". This | :: |
| :: | release is 100% complete and was tested on our own | :: |
| :: | hardware. Just wait for the chinese to figure it | :: |
| :: | all out aswell, then you can play this release too.| :: |
| :: | Like our first DS and DSi dumps, we have included | :: |
| :: | a picture of the dumper with this release. Make of | :: |
| :: | it what you want, we have no intention of giving | :: |
| :: | out further information. | :: |
Maybe this is all the hardware that is needed to dump 3D Roms?
They did say "Yes, it is THAT simple" in the NFO file... maybe it really is that simple?
edit:
It looks like the pins of the cartridge are connected through that PCB (underneath the board) to both GPIO ports on the DE1.
Maybe GPIO_1 is connected to one of the DS Lites and that is being used to unlock the cart? (or supply power to the cart?)
also, on the NDS Lite Bottom Screen, you can just make out the text "There is no DS cart Inserted"
edit2: 3DS Carts have 17 pins, 16 pins are connected from the cart PCB to the Zeroplus logic cube,
and the 17th pin is ground which is that single black wire on the end the Zeroplus logic cube.