RPN83P: RPN calculator for TI-83+ TI-84+ inspired by HP-42S

[spiff72]

(11-11-2024 11:46 PM)bxparks Wrote:  

(11-11-2024 10:23 PM)spiff72 Wrote:  No worries at all - I had just found that nSTK was my preferred mode on my DM42 when I had it "stock". My personal history with HP calcs was ownership of an HP48SX in college, and I later bought a 50g when I was well out of college. As a result, RPL is what I am most familiar with. I'm used to hitting the DROP key and having the stack drop down as each level is removed.

I have been running DB48x on my DM42 to bring back that familiarity with RPL.

Just to make sure that I understand the appeal of NSTK:
* Is it because the stack size is "infinite" (where "infinite" just means "large")?
* Or is it because when you clear the stack, the stack actually collapses to nothing, instead of just having all of its slots cleared to 0.0?

Implementing an RPL-flavored stack would be far easier if the requirement for an "infinite" stack size was removed, in favor of a relatively small maximum stack size (e.g. 16, 32, 64). But regardless, it is unlikely that RPN83P would gain an RPL-flavored stack. There are too many other features which are higher priority.

I'm referencing the "Plus42" app for iOS as I respond to this, since my DM42 is currently loaded with DB48x...

The behavior that I like about nSTK mode is that if you enter multiple items on the stack without any other operations (4 ENTER 3 ENTER 2 ENTER 1 ENTER), and then press the drop key, the "1" on the first level is dropped, and all the other items on the stack drop down, placing "2" in the first level.

In 4STK mode, the above operations would drop the 1 from the X level, making it zero, but the other levels remain in their places.

Does that make sense? If this could be done with a "large" stack level (maybe 10-20?), this would be ideal for me.

Another suggestion I would have is to add a conversion in the UNITS menu similar to the in-cm section, but for mm and inches. As an engineer, I think in mm mostly - rarely in cm.