Yamaha CS80

Beside what David said - yes, someone did it already: 
http://www.cs80.com/SSK/ Ok, it is not for the polyphonic series, but it 
shows, that is doable, and also that it would provide other advantages, 
like adding MIDI.


On 16.01.18 18:39 , jonathan4051@... [yamahacs80] wrote:
>
> Has anyone ever looked into modern alternatives for these fragile and 
> rare 40-year old chips? I am wondering if it'd be possible to program 
> an Arduino to handle key coding/assigning and D/A conversion on the 
> KAS and KBC boards.
>
> Cheers,
>
> Jonathan
>
>