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Dave Jones (EEVBLOG) tries the DM42
Posted: Thu Dec 27, 2018 7:34 pm
by mcc
Hi,
Dave Jone from the EEVBLOG tries the DM42...
https://www.youtube.com/watch?v=Ong91Ji3iDk
Cheers!
mcc
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Fri Dec 28, 2018 9:50 am
by keithdalby
Some of the comments on the video are pretty negative
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Fri Dec 28, 2018 11:19 am
by Thomas_ER
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
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Fri Dec 28, 2018 1:43 pm
by mcc
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
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Fri Dec 28, 2018 4:23 pm
by Thomas_ER
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.
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Fri Dec 28, 2018 4:50 pm
by dlachieze
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.
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Fri Dec 28, 2018 5:24 pm
by Thomas_ER
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.
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Fri Dec 28, 2018 5:59 pm
by Thomas Okken
dlachieze wrote: ↑Fri Dec 28, 2018 4:50 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.
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Fri Dec 28, 2018 8:43 pm
by mcc
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
Re: Dave Jones (EEVBLOG) tries the DM42
Posted: Sat Dec 29, 2018 8:38 am
by mcc
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