Search found 285 matches

by rprosperi
Fri Mar 15, 2019 2:47 pm
Forum: Update Announcements
Topic: UPDATE: DMCP-3.13 / DM42-3.13
Replies: 36
Views: 1339

Re: UPDATE: DMCP-3.13 / DM42-3.13

DM42-3.13 Update smooth and quick, no issues encountered (I used combo file). Presumably creating (and removing/renaming) directories in the PROGRAMS folder can/should only be done via USB-connected PC? Is there a sense of the 'current' folder being retained, and if so, what happens if that folder i...
by rprosperi
Tue Mar 05, 2019 11:32 pm
Forum: Software Library
Topic: Moon Landing on DM42?
Replies: 5
Views: 256

Re: Moon Landing on DM42?

Here is a version for the 41C family, which should be easily ported to the 42S, it may even run as-is, I did not examine it closely:

http://www.hpmuseum.org/software/41td/land67.htm
by rprosperi
Sun Mar 03, 2019 3:13 pm
Forum: Usage tips, tricks and problem reports
Topic: Running an HP 50g program on the DM42
Replies: 5
Views: 303

Re: Running an HP 50g program on the DM42

Oh, and as for posting the code that isn't possible as it looks as if the program is compiled and there isn't any source code provided as far as I can tell. I looked at the 50g program and it will not be easily ported to the 42S; it is sophisticated and not straightforward, and was written in very ...
by rprosperi
Sat Mar 02, 2019 10:52 pm
Forum: Usage tips, tricks and problem reports
Topic: Running an HP 50g program on the DM42
Replies: 5
Views: 303

Re: Running an HP 50g program on the DM42

Pretty much impossible. The languages used are totally different and there is no way to directly convert it. Of course if you happen to know both languages you could port the underlying algorithm, but that's unlikely. If the 50g program is not too long, if you posted it here, or on the MoHPC forums ...
by rprosperi
Sun Feb 24, 2019 7:36 pm
Forum: DM42
Topic: Integration Accuracy
Replies: 2
Views: 277

Re: Integration Accuracy

lrdheat wrote:
Sun Feb 24, 2019 5:28 pm
What (in simple terms) is the reason that the accuracy is improved over the 42S?
The DM42 (built using Free42) use 34 internal digits, while the 42S uses 15 internal digits (12 visible).
by rprosperi
Sat Feb 23, 2019 3:16 pm
Forum: Hardware
Topic: DM15L keyboard faceplate is separating
Replies: 23
Views: 2196

Re: DM15L keyboard faceplate is separating

I also sympathise with mezoganet's frustration especially given the price of those units and the several reports that seem to indicate that this is a known defect of some/most DMxL production batches / possibly a design issue that has been going on for several years. As noted, of the hundreds (like...
by rprosperi
Fri Feb 22, 2019 3:03 pm
Forum: Firmware updates
Topic: Firmware V28 for DM1x/DM41(L) units
Replies: 19
Views: 832

Re: Firmware V28 for DM1x/DM41(L) units

Thanks SM team! Smooth and fast update, as usual.

And remember kids, seeing "PR ERROR" after updating Voyager models is normal, so don't panic. I did once, and am trying to save you from that embarrassment...
by rprosperi
Fri Feb 22, 2019 2:09 pm
Forum: Hardware
Topic: DM15L keyboard faceplate is separating
Replies: 23
Views: 2196

Re: DM15L keyboard faceplate is separating

My DM41L has been ordered on Jan 30th 2019. Out from the box, the bezel did not stick. After mailing Michael with pictures, the solution was to remove the foam under the keyboard. Nothing better, so Michael sent me another bezel. Same problem : bezel does not want to stick. This device has been use...
by rprosperi
Thu Feb 21, 2019 6:53 pm
Forum: Hardware
Topic: DM15L keyboard faceplate is separating
Replies: 23
Views: 2196

Re: DM15L keyboard faceplate is separating

So, Voyager series has a serious issue with gluing/faceplate. Not all SM Voyagers. I've had a DM15L for a few years, used semi-frequently (a few times each week, maybe 2 weeks) and have never had any kind of faceplate separation; perhaps the issue depends on environmental conditions, or possibly yo...
by rprosperi
Tue Feb 19, 2019 11:34 pm
Forum: Discuss!
Topic: Little Problem with Complex Mathematics on Calculators
Replies: 23
Views: 1026

Re: Little Problem with Complex Mathematics on Calculators

Thanks for walking some of us through this stuff Thomas. Take an integer, and consider it as two numbers, with their digits interleaved. Say, 123456: this can be considered as 135 combined with 246. Any pair of integers can be represented as a single integer in this manner. In fact, with this kind o...