DM42 vs DM41x vs DM43

[Marco Polo]

(01-16-2020 05:32 PM)Thomas Okken Wrote:  If porting Free42 to Qt works out well, adding big-screen support isn't completely out of the question, but even if so (and it is a big if!), it wouldn't be exactly like on the DM42.

First of all, thank you for your efforts and for making available and mantain that little jewel named Free42.

This is a good new (even if is a big IF, is not a big NOT): in my opinion the 2-lines display of the 42s is a limiting factor compared to the capabilities of the calculator

Quote:As for some of the other features that have been requested for Free42 over the years but never implemented: the big ones are equations and units, and both of those would require huge changes to the Free42 core. In a nutshell, that core was designed specifically to support the HP-42S environment, and the type system and interactive I/O logic are very much geared towards that requirement, and would basically have to be rewritten.

I see your point.
As a matter of fact the integrated solver might be even better than an equation solver, as it is basically a "program solver". Or at least this is what i have understood.
Anyway, but i am not a programmer so i might be wrong, it could be possible to integrate the UOM program presented here (https://www.hpmuseum.org/forum/post-90235.html) as it relies upon standard 42S features.

Quote:I was able to fit a few useful extensions into the existing design, i.e. Step Over / Step Out, LSTO, the big RTN stack, and the BASE enhancements, but anything beyond that quickly gets into the territory where the current programming model becomes too limiting and you'll need something like RPL. And that is something that others have already done, or are already doing, quite well.

Well...i truly love the flexibility and coherence of RPL