I am currently working on an RPN interface/mode for the Nspire CX (II) - written in Lua - that I wanted to show to you.
- - Stack based RPN
- Calculation trail (like on the V200 rpn mode)
- RPN/ALG mode switch
- Unlimited undo/redo
- (Smart) autocompletion for (some) units, functions, and variables
- Theming support
- A fast keypad navigated menu system (9 big buttons selected via 1-9)
- … and many many more
It is still in an _alpha stage_, but usable for non-complex calculations. Matrix and complex support is still missing right now.
Error handling/reporting is currently non-existing.
I would love to get some feedback, or even better, some patches.
Hope you are interested.
The source and the tns can be downloaded from my GitHub: