Dave Jones (EEVBLOG) tries the DM42

Discussion around the Swiss Micros DM42 calculator.
mcc
Posts: 205
Joined: Fri Jun 23, 2017 3:10 am

Dave Jones (EEVBLOG) tries the DM42

Post by mcc » Thu Dec 27, 2018 6:34 pm

Hi,

Dave Jone from the EEVBLOG tries the DM42...
https://www.youtube.com/watch?v=Ong91Ji3iDk

Cheers!
mcc
DM 42 - SN: 00373, Firmware v.:3.13. / 3.13. as compiled by SwissMicros

keithdalby
Posts: 538
Joined: Mon Apr 24, 2017 6:38 pm

Re: Dave Jones (EEVBLOG) tries the DM42

Post by keithdalby » Fri Dec 28, 2018 8:50 am

Some of the comments on the video are pretty negative :(

Thomas_ER
Posts: 75
Joined: Mon Jul 24, 2017 1:19 pm
Location: Germany

Re: Dave Jones (EEVBLOG) tries the DM42

Post by Thomas_ER » Fri Dec 28, 2018 10:19 am

There is a great thread at the museum, including answers from Dave:
"EEVBlog #1159 Dave Jones reviews the DM42"
Link: http://www.hpmuseum.org/forum/thread-11972.html
[ HP48/49/50/42S/WP34/HP Prime/ DM42 (#00185+00318) ]

mcc
Posts: 205
Joined: Fri Jun 23, 2017 3:10 am

Re: Dave Jones (EEVBLOG) tries the DM42

Post by mcc » Fri Dec 28, 2018 12:43 pm

Hi,

from the thread I typed in the "Reciprocal Fibonacci Constant" ... it fails with "Invalid Data" at the NOT command.
Is there anybody, who git it running on her/his DM42?

Cheers!
Meino
DM 42 - SN: 00373, Firmware v.:3.13. / 3.13. as compiled by SwissMicros

Thomas_ER
Posts: 75
Joined: Mon Jul 24, 2017 1:19 pm
Location: Germany

Re: Dave Jones (EEVBLOG) tries the DM42

Post by Thomas_ER » Fri Dec 28, 2018 3:23 pm

Hello Meino,

maybe it's better to ask your question in the other forum,
in my humble opinion this forum is at present to silent.. hopefully not for long..

Have a nice weekend,
Thomas
PS didn't try 'RFC' yet.
[ HP48/49/50/42S/WP34/HP Prime/ DM42 (#00185+00318) ]

dlachieze
Posts: 166
Joined: Thu May 04, 2017 10:20 am
Location: France

Re: Dave Jones (EEVBLOG) tries the DM42

Post by dlachieze » Fri Dec 28, 2018 3:50 pm

What value did you had in the X-register when you launched RFC?

I have not tested RFC on my DM42, but I did test it on Free42 and it is working with for ex. 15 or 19 as the start value.
DM42 SN: 00425

Thomas_ER
Posts: 75
Joined: Mon Jul 24, 2017 1:19 pm
Location: Germany

Re: Dave Jones (EEVBLOG) tries the DM42

Post by Thomas_ER » Fri Dec 28, 2018 4:24 pm

Now I've converted the program via https://www.swissmicros.com/dm42/decoder/,
copied the .raw to DM42, and tested with '9' on the stack.
Result equals to https://en.wikipedia.org/wiki/Reciproca ... i_constant
for 33 decimal places.
[ HP48/49/50/42S/WP34/HP Prime/ DM42 (#00185+00318) ]

Thomas Okken
Posts: 576
Joined: Tue May 02, 2017 3:48 pm
Location: New Jersey, USA
Contact:

Re: Dave Jones (EEVBLOG) tries the DM42

Post by Thomas Okken » Fri Dec 28, 2018 4:59 pm

dlachieze wrote:
Fri Dec 28, 2018 3:50 pm
What value did you had in the X-register when you launched RFC?
I'm guessing 26 or more, which results in NOT being performed with a value it can't handle, outside of its domain of -(2^35) to (2^35)-1.

mcc
Posts: 205
Joined: Fri Jun 23, 2017 3:10 am

Re: Dave Jones (EEVBLOG) tries the DM42

Post by mcc » Fri Dec 28, 2018 7:43 pm

Hi,

thanks to all for helping me for NOT haveing a problem ;)

...yes...that's it... the number runs out of the sane range...

Cheers!
Meino
DM 42 - SN: 00373, Firmware v.:3.13. / 3.13. as compiled by SwissMicros

mcc
Posts: 205
Joined: Fri Jun 23, 2017 3:10 am

Re: Dave Jones (EEVBLOG) tries the DM42

Post by mcc » Sat Dec 29, 2018 7:38 am

Hi,

I have a slightly offtopic question:

The wikipedia page referenced earlier talks about the
Reciprocal Fibonacci constant
.
And it is said, that
this sum tends to the reciprocal of the golden ratio
and is:
3.3599....
.
Also this Wikipedia page links to its entry of the Golden Ratio, which is said to be: 1.61803398874....

With my limited English (I am no native speaker) I understand "reciprocal of the golden ration" as
1/1.61803398874, which I think is not equal to 3.3599...

What do I miss here... ? ;) :)

Cheers!
Meino
DM 42 - SN: 00373, Firmware v.:3.13. / 3.13. as compiled by SwissMicros

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