GBA Emulator Released For the DSi
Busshy writes "Darkchen has released a Gameboy Advance emulator for the Nintendo DS/DSi that plays full speed with frameskip. This can only be played with the homebrew dev cart, the DS iPlayer. The emulator adds save states, cheats and tools to GBA games, and for DSi Fans the ability to finally get over the loss of the GBA Slot on the DSi."
If it has to skip frames to play at "full speed" then that means it's not really playing at full speed.
About DSi, once DSi mode is properly cracked, it should give access to 133MHz ARM9 (up from 66MHz) and 16MB of RAM (up from 4MB), which might make this iPlayer device not needed.
Lameboy DS seems to work fine.