Loading GBA and NDS Pokémon games from the same SD

[LeyendaV]

I'm playing Gen4 Pokémon games as roms loaded from the SD card in my DSi. As far as I know, if my games were cartridges, there would be a way to load the GBA Gen3 games from the SD, but what about this case that both are being loaded from the SD?

 

[RocketRobz]

Currently, there is no way to emulate Slot-2 (the GBA slot) in the Gen 4 Pokemon games.
If you want to transfer Pokemon, you can use pkmn-chest.