Is it possible to play Gameboy (color) and GBA roms on Edge DS? I'd like to play the old Pokémon games and Golden Sun. I remember that I once had a homebrew app that let me boot GB and GBC roms (but not GBA), but I forgot its name. A link would be great!

Also, is it possible to use a cheat system similar to that used for DS roms when playing GBX roms?

 

Its called Lameboy.

 

You can play Game Boy Advance titles with an EDGE card, you only need an EZ Flash 3 in 1 and the application GBA ExpLoader of Rudolph, so you can play any GBA title of your NDS.

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I'm sorry, but just saw the question, I think it's a little late to answer.