Is the Game Boy Advance slot on the DS region-locked?

I was thinking about how the DS does not play the old gameboy games, so my question is, would it be possible to take the cartridge slot out

the thing that would actually intrest me is if it was possible to emulate gameboy games by using

vampire bride slot It works with Game Boy, Game Boy Color and Game Boy Advance games through its cartridge slot Plays Game Boy, Game Boy Color, and GBA

free online slot machines rainbow riches The Nintendo DS Lite slot cover is enclosed in the original Nintendo DS Lite packaging and is used to protect Slot-2 for Game Boy Advance games