DM41L versus DM15?

Forum for discussion of the DM10, DM11, DM12, DM15, DM16 and DM41 units
Helix
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Re: DM41L versus DM15?

Post by Helix »

For quick comparisons between HP calculators, you can use this page:
http://www.hpmuseum.org/features/compare.htm
keithdalby
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Re: DM41L versus DM15?

Post by keithdalby »

Thank you. I'd done that comparison already, but several functions for the HP-41cx showed 'option', which is why I asked.
grsbanks
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Re: DM41L versus DM15?

Post by grsbanks »

The features that show as "Option" for the 41CX are generally provided in ROM pac modules that don't come built in.
There are only 10 kinds of people in the world: those who understand binary and those who do not.
keithdalby
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Re: DM41L versus DM15?

Post by keithdalby »

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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Re: DM41L versus DM15?

Post by grsbanks »

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...
There are only 10 kinds of people in the world: those who understand binary and those who do not.
rprosperi
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Re: DM41L versus DM15?

Post by rprosperi »

grsbanks wrote:
Tue Jan 23, 2018 2:38 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, DM41X: β00071 & 00656, DM10L: 071/100
keithdalby
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Re: DM41L versus DM15?

Post by keithdalby »

rprosperi wrote:
Tue Jan 23, 2018 3:38 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
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Re: DM41L versus DM15?

Post by grsbanks »

Given that there's under 4K of space left, the possibilities are rather slim!
There are only 10 kinds of people in the world: those who understand binary and those who do not.
keithdalby
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Re: DM41L versus DM15?

Post by keithdalby »

grsbanks wrote:
Tue Jan 23, 2018 5:13 pm
Given that there's under 4K of space left, the possibilities are rather slim!
Gulp
keithdalby
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Re: DM41L versus DM15?

Post by keithdalby »

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 7:34 pm, edited 1 time in total.
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