DM-42 and WP-43S

[rprosperi]

(04-04-2017 03:43 PM)c785 Wrote:  ...
1. fixing the RPN logic, which is somewhat weird on the 42 and WP34s (when exactly to press ENTER and when not); in fact, the HP48 has already done it.

2. fixing the fixed-size stack, also done on the HP48.

3. replacing keypress programming and its labels and gotos with RPL or similar for a much more robust and scalable programming experience. Again, the HP48 is miles ahead of everything else in this respect. Actually, it isn't even that different from keypress programming as far as program entry is concerned.

I'm afraid the question of whether RPL 'fixes' RPN or not is a religious question, not a technical one.

The 34S painstakingly follows the RPN/entry model of the 34C, 42S, and other RPN machines because that's what thousands of users want it to do. There are no doubt certain advantages when using RPL, but many, many users prefer the simplicity and elegance of RPN with a stack-depth of 4, and keystroke programming.

As to why they prefer this, search the archives of these forums, there are likely > 1000 threads that cover this topic from many angles. There is no 1 simple answer that you may have missed, there are many, many simple answers, that when taken together form a compelling argument that the complexity and subtleties of RPL do not justify it's clearly higher power.

Just an opinion...