You are referring to mednafen? I could not find it in the repos, so I compiled it myself. It supports a lot of handhelds on the good side, but its weak point is its sound. Setting it to SDL gives a result that is a little bit acceptable, at the cost of much cpu. The result for the Lynx emulation is the less worse of all.

In the mean time started compiling the Lynx emulator Handy/SDL. It's sound is a lot better. I also started working on it's controls. It may be an emulator worth of the N900 in the future