If someone already did work with the S&S Speech synth, help is always welcome..
I've never worked with one; I haven't been able to find one - plus the technology is so old and not made anymore, it isn't worth it - Speak and Spells are also considered (by some) to be collectors items - keep that in mind (ie, if you ruin it, you could be kicking yourself in a couple of decades, as their value is only climbing).
I do know they were popular back in the 1980s for robot builders to use as a speech synthesizer; I honestly thought I had a book (or maybe a magazine?) that showed an interface, but I haven't been able to find it.
Hmm - I just looked and found the TI Design Manual for the TSP50C0x/1x Family - as well as the data manual for the TMS 5220 (which I think is the one used in the Speak and Spell). The first is a 1 MB PDF, the second is a 7.5 MB PDF; maybe I can post them up on my website later this evening...
