Homebrew developer NekoMiMi has created a Nintendo DS Emulator for the PSP. He is also the creator of the sweet app that allows you to watch YouTube videos on your PSP. Don't go completely nuts yet, but yes this is true. There is a catch though, it's not to stable and it does NOT run commercial roms yet. But you can run Nintendo DS homebrew. This is a start and hopefully not the end.

To run: Rename your ROM to “test.nds” and place it in the same folder as EBOOT.PBP.

Download DeSmuME

[source]

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