Finally, i´ve taken the time to add a good NDS Emulator tutorial. Since no$gba is vastly the most popular, i´ll show it first.
Having said that Desmume is also a very good DS emulator that is also open source. I really wish the DS emulators would progress faster though considering they´re not emulating a very powerful system.
This is a newer PCSX2 tutorial.
It also shows you where you can get the roms and BIOS files instead of leaving you trying to find it.
Note that the speed is actually relatively good. There is some sound issues for some reason though. I didn´t take the time to change the sound buffer size to try to fix it.
Well i finally got a good recording of the install process for Dolphin on linux. Remember that you have to compile it and you'll need a standard C++ compiler, along with Scons package management.
I stated on the youtube video's description to anticipate issues. It is difficult to stress how many issues there are and how often they happen. It's virtually impossible to play a game in Dual-Core mode for any length of time. And without dual-core mode, games are slow beyond usage anyway. So on my behalf, go to the Dolphin-Emu's website and tell the Devs to add better support for linux. :)