I was just doing some research, prior to starting a uart chat interface for the nspire, when I stumbled upon your lovely posts.
Great to hear someone else out there in the interwebs has the same interest!
I was wondering, Samy, if you have developed your idea any further than the previous posts suggests?
So far you have already saved me a stack of time starting from scratch, and if possible, I'd love to co-op with you to continue on this app.
With warm regards from Switzerland,