Voila l'add on hardware que Tailchao nous prépare :
Edit: and to all of you who are curious about what the L-SOUND is, I've decided to spread the word-
I have always considered the sound of a game to be one of the most imprtant aspects of it, after all, which do you find yourself doing drawing mario or humming some of his familiar tunes. The 16-bit era had some incredible sound improvements in video games, and I wanted to bring that power and more, to the lynx. The L-SOUND upgrade is a small unit containing an ARM processor, RAM and a small bootup ROM. It shall not be placed inside each individual cartridge say, as Super FX chips were on the SNES, but inside the lynx (I believe there is enough room in the lynx II to accomodate it). The L-SOUND unit will have a small compact flash alike adapter along the left ridge of the lynx's cartridge port, and games using the technology will connect to it through pins protruding from the left side of the cartridge (the pins can be pulled back into the cart via a lever, to ensure safe storage). When inserted, the cart will make contact with the lynx cart port as well as the L-SOUND port, which will feature detection on whether a specialised cart is inserted (think lynx cart port, if there is no cart, no current passes through) and will not start up if one is unpresent, saving battery power. However, if the cart does make use of the technology, the L-SOUND unit will start up, and wait for a conformation signal from a wire internally attached to the AUDIO_IN port. If the correct signal is not recieved, the unit will become inactive. When the unit recieves an "all go" through the AUDIO_IN, it will load its software sound routines from the sound rom on the cart (though its own port of course) and wait untill it receives and instruction through the AUDIO_IN line to, perhaps play a song. The unit's audio output will be mixed with the lynx's own to allow freedom of sound production. All developers can write their own sound routines for the device, and will be free to access information on it (when completed) I am looking to assemble a team to create the device (i'm only a beginner at hardware =P ), so contact me or post here if you are interested.
http://www.atariage.com/forums/viewtopic.php?t=40723&start=25