DM41L versus DM15?

Forum for discussion of the DM10, DM11, DM12, DM15, DM16 and DM41 units
Helix
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Joined: Fri Jun 23, 2017 10:59 pm
Location: France

Re: DM41L versus DM15?

Post by Helix » Mon Jan 22, 2018 9:35 pm

For quick comparisons between HP calculators, you can use this page:
http://www.hpmuseum.org/features/compare.htm

keithdalby
Posts: 399
Joined: Mon Apr 24, 2017 6:38 pm

Re: DM41L versus DM15?

Post by keithdalby » Tue Jan 23, 2018 5:05 am

Thank you. I'd done that comparison already, but several functions for the HP-41cx showed 'option', which is why I asked.

grsbanks
Posts: 555
Joined: Tue Apr 25, 2017 9:23 am
Location: Preston, Lancs, UK

Re: DM41L versus DM15?

Post by grsbanks » Tue Jan 23, 2018 11:44 am

The features that show as "Option" for the 41CX are generally provided in ROM pac modules that don't come built in.
Not SwissMicros staff, just an enthusiast.

keithdalby
Posts: 399
Joined: Mon Apr 24, 2017 6:38 pm

Re: DM41L versus DM15?

Post by keithdalby » Tue Jan 23, 2018 12:50 pm

Interesting. I wonder if there is sufficient memory in the calculator (and manpower) to implement them. Just thinking out loud, not a request!

grsbanks
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Joined: Tue Apr 25, 2017 9:23 am
Location: Preston, Lancs, UK

Re: DM41L versus DM15?

Post by grsbanks » Tue Jan 23, 2018 1:38 pm

There's actually precious little space left in Flash memory for the DM41/L. Not enough to add another ROM pac module anyway. If there was, which one would people want to see? There are so many to choose from...
Not SwissMicros staff, just an enthusiast.

rprosperi
Posts: 262
Joined: Mon Apr 24, 2017 5:48 pm
Location: New York

Re: DM41L versus DM15?

Post by rprosperi » Tue Jan 23, 2018 2:38 pm

grsbanks wrote:
Tue Jan 23, 2018 1:38 pm
There's actually precious little space left in Flash memory for the DM41/L. Not enough to add another ROM pac module anyway. If there was, which one would people want to see? There are so many to choose from...
I think the Advantage ROM is easily the most useful today, as it adds the 15C/34C Solver & Integration, as well as Matrix and Complex number support. But, it's a 16KB ROM, so the hardest one to squeeze in.

If you are going to consider adding ROMs, I think adding Angel Martin's OSX3 version of the CCD Module (with the required LIB4) should also be considered; while not as rich in pure math functions, it makes using a 41 much easier and more enjoyable.
--bob p

DM42: β00071 & 00282

keithdalby
Posts: 399
Joined: Mon Apr 24, 2017 6:38 pm

Re: DM41L versus DM15?

Post by keithdalby » Tue Jan 23, 2018 3:34 pm

rprosperi wrote:
Tue Jan 23, 2018 2:38 pm
I think the Advantage ROM is easily the most useful today, as it adds the 15C/34C Solver & Integration, as well as Matrix and Complex number support. But, it's a 16KB ROM, so the hardest one to squeeze in.
This one gets my vote

grsbanks
Posts: 555
Joined: Tue Apr 25, 2017 9:23 am
Location: Preston, Lancs, UK

Re: DM41L versus DM15?

Post by grsbanks » Tue Jan 23, 2018 4:13 pm

Given that there's under 4K of space left, the possibilities are rather slim!
Not SwissMicros staff, just an enthusiast.

keithdalby
Posts: 399
Joined: Mon Apr 24, 2017 6:38 pm

Re: DM41L versus DM15?

Post by keithdalby » Tue Jan 23, 2018 4:40 pm

grsbanks wrote:
Tue Jan 23, 2018 4:13 pm
Given that there's under 4K of space left, the possibilities are rather slim!
Gulp

keithdalby
Posts: 399
Joined: Mon Apr 24, 2017 6:38 pm

Re: DM41L versus DM15?

Post by keithdalby » Tue Jan 23, 2018 4:43 pm

Just a thought, what about the 41CV ROM with added timing and advantage modules? Or modules chosen by the user to flash?

Edited to add: just wondering if the 41CV or even 41C ROMs would give you more memory to play with

Edited to add: found this, http://www.brouhaha.com/~eric/hpcalc/memory_size.html if I'm reading the table right, it looks like a lot of memory would be saved by going to the 41C ROM (far less available memory for programs etc), or even the 41CV (ROM about half the size but far more memory for programs than 41C). I am guessing flashing alternative ROMs is a bit more involved than just dragging and dropping though.
Last edited by keithdalby on Tue Jan 23, 2018 6:34 pm, edited 1 time in total.

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