hacking CASIO CP400, anyone?

[DiTBho]

I spent my second BlackFriday bonus on a CASIO CP400 graphing calculator.

It's big calculator with a very nice LCD, and powered by a ~50 Mhz SH4 CPU, downclocked a bit to save power.
Unfortunately there is no SDK available from CASIO, you cannot develop and run your own applications.

But nothing can stop you from hacking the firmware, writing a loader (S19?) and having fun.

How to spend time during Christmas holidays. Anyone?   

[DiTBho]

Available on Calcuso for 140-150 euro.
Cheaper than on Amazon

[neil555]

You might find this useful 

https://the6p4c.github.io/2018/01/15/hacking-the-gc-part-1.html

[DiTBho]

You might find this useful 

https://the6p4c.github.io/2018/01/15/hacking-the-gc-part-1.html

Nice