HP35s bug ?

[Philippe]

Hello,

Could you confirm the following bug :
Tape this (stupid) program :
PRGM TOP
0001    1
0002    2
0003    3
0004    4
0005    RTN

Now, if you exit PRGM and push the value 10 (for instance) in the stack, you will get 10.0000000007


If the program is :

PRGM TOP
0001    1
0002    2
0003    3
0004    4
0005    5
0006    RTN


Now, you can't even enter 10 (you will get  1?)
Did i miss something ?
Thank you,
Philippe

[Voldemar]

(04-04-2016 10:11 PM)Philippe Wrote:  Could you confirm the following bug...

I just tried.
No. I get 10.00000000. In both cases.

[Thomas Radtke]

Philippe,

was your program memory and stack empty when entering this program? Would you mind listing the exact series of keystrokes needed to reproduce the bug?

Best regards,

Thomas

[Philippe]

Hi,

Thanks to Voldemar for trying.

@thomas :
i reproduce this behaviour each time. 
1) I clear all (Blue arrow CLEAR 3 Yes Enter)
2) then i type the program :
blue arrow PRGM
1 ENTER
2 ENTER
3 ENTER
4 ENTER
yellow arrow RTN
C 
3) back to the stack, i type 
10 ENTER
Then the stack show
10.00000007
10.00000007


If i edit the program and remove  the line containing "4", then all works

Now, if :

1) I clear all (Blue arrow CLEAR 3 Yes Enter)
2) blue arrow PRGM
1 ENTER
2 ENTER
3 ENTER
4 ENTER
5 ENTER
yellow arrow RTN
C 
3) back to the stack, i type 
10
I get :
1?
If i type the ENTER key, i have a syntax error
More info :
a) if i type
1. (digit "1" + a dot ".")
I get :
1n ("1n")

Thanks for your help,
Philipe

[Thomas Radtke]

(04-05-2016 09:49 PM)Philippe Wrote:  @thomas :
i reproduce this behaviour each time. 
1) I clear all (Blue arrow CLEAR 3 Yes Enter)

Thank you very much for your effort!

That maybe explains deviating results: I cannot clear all as I have some programs, equations and data I want to keep.

You may already know the 35s bug list. Not sure if it is still maintained, I seem to remember there was another bug connected to the stack found a couple of months ago, but it isn't listed here.

Best regards,

Thomas

[jebem]

Nope, all is working fine on my two different HP-35S machines when typing your two examples.
I get 10.000 all the time, and if I do a Show, it will display the full number with all trailing zeros.

Definitely is not a bug.
You have a faulty machine.

(04-05-2016 09:49 PM)Philippe Wrote:  Hi,

Thanks to Voldemar for trying.

@thomas :
i reproduce this behaviour each time. 
1) I clear all (Blue arrow CLEAR 3 Yes Enter)
2) then i type the program :
blue arrow PRGM
1 ENTER
2 ENTER
3 ENTER
4 ENTER
yellow arrow RTN
C 
3) back to the stack, i type 
10 ENTER
Then the stack show
10.00000007
10.00000007


If i edit the program and remove  the line containing "4", then all works

Now, if :

1) I clear all (Blue arrow CLEAR 3 Yes Enter)
2) blue arrow PRGM
1 ENTER
2 ENTER
3 ENTER
4 ENTER
5 ENTER
yellow arrow RTN
C 
3) back to the stack, i type 
10
I get :
1?
If i type the ENTER key, i have a syntax error
More info :
a) if i type
1. (digit "1" + a dot ".")
I get :
1n ("1n")

Thanks for your help,
Philipe

[Paul Dale]

I do maintain the bug list even though I don't have a 35S any more.
I skim a lot of postings here and can easily miss things.

- Pauli

[Philippe]

Well, thanks all for your help

As Jebem said, i'm pretty sure that I have a faulty machine (@Thomas, the "clear all" command is in fact not necessary. I used it just to clearly show the problem)
Thus,I will not report this behavior as a bug in Paul's list
If someone wants to see a video of the problem, I can post it (in my Dropbox ?)

Thanks to all
Philippe

[Marcio]

I would like to see it.
Thanks
Marcio

[Thomas Radtke]

Me too!

[Philippe]

Here is a temporary Dropbox link :
https://db.tt/QJTdco9r
I will appreciate some feedback !
Thanks,
Philippe

[Marcio]

Nasty!

If it's under warranty, you should ask for a replacement. This machine seems to be faulty and cannot and should not be trusted.

[jebem]

(04-07-2016 10:40 AM)Philippe Wrote:  Here is a temporary Dropbox link :
https://db.tt/QJTdco9r
I will appreciate some feedback !
Thanks,
Philippe

That's very interesting behavior, but again, my two machines, made in different years, do NOT have this behavior.
One if from 2007 week 28 (S/N CNA 72800051)
The other is from 2012 week 12 (S/N CNA21200BH)

Anyhow, HP would never release a machine with such a obvious misbehavior.
The so called 35S bugs took years to be found.
If this one was a bug, I'm sure it would be found in the very first day of testing!

What is the S/N of yours?

[Paul Dale]

(04-07-2016 11:08 AM)jebem Wrote:  The so called 35S bugs took years to be found.

Most were discovered and reported fairly soon after release. A relatively few more were discovered over the years since and I'm sure more still are lurking.


Pauli

[jebem]

(04-07-2016 11:21 AM)Paul Dale Wrote:  

(04-07-2016 11:08 AM)jebem Wrote:  The so called 35S bugs took years to be found.

Most were discovered and reported fairly soon after release. A relatively few more were discovered over the years since and I'm sure more still are lurking.


Pauli

Sorry, Paul, my mistake. I'm not a native English speaker, so you have to excuse me.
I meant that some bugs took years to be found.

[Philippe]

Hi,

@Marcio, yes it is under warranty and I will ask asap for a replacement.
@Jebem, the S/N is CNA54614CH (means ?)
Thanks again
!
Philippe

[John Smitherman]

(04-07-2016 09:42 PM)Philippe Wrote:  Hi,

@Marcio, yes it is under warranty and I will ask asap for a replacement.
@Jebem, the S/N is CNA54614CH (means ?)
Thanks again
!
Philippe

Philippe, have you tried a "Reset" using the hole on the bottom?


Regards,

John

[Philippe]

Very good idea !

Unfortunately, this has no effect... (Turn off the calculator without resetting anything)
I also removed the batteries, this time it produces a "memory clear", nothing more...
Definitely a faulty machine.

Thanks,
Philippe