A while back I got an fx-9860GII calculator. The model is a graphical, programmable calculator which is based on the SH architecture (it's an SH-3 CPU running at ~15 MHz). I stumbled upon some development tools over on SourceForge which included a tool for displaying a live view of the calculator's screen. I spent a little while getting the tool to work on Ubuntu 14.04 (it was originally developed in 2007 although the wiki was updated last year) and I'm making this a public gist in case anyone else wants to get this working.
There's a lot of documentation on the calculator and how it works here. CASIO have released an SDK available to those who own the calculator but it only works on Windows and I haven't had much luck getting the development tools to