diemheych

differentiate menu folders from other menu items

3

Is there room to add a small line above the folder menu items like on the HP-48 so you can easily tell it's a folder?

shortcuts for entry to nn prompts

4

Firstly, congratulations on a very comprehensive RPN implementation for the TI series! I love the 16C functions. Being a 41C user, I'd love to see shortcuts for anything that prompts...

stack register access from register access and arithmetic

4

Add direct stack register access and arithmetic. For example STO Z, STO *L etc.

BMP display offset

13

I borrowed your BMP display code and noticed the image was slightly offset. I had to change (50-j) to (49-j) in the line below. Reviewing the code, this looks like...