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+--- Thread: HP 15C LE Memory Corruption After Self Test Performance (/thread-193960.html)
HP 15C LE Memory Corruption After Self Test Performance - Mike Morrow - 09-09-2011
In other threads today I reported failure of the self tests normal to the 15C and described on page 261 of the 15C LE manual.
But now, I can report that attempting to perform the "ON plus *" self test not only results in immediate "Error 9", but also corrupts any program that is in memory.
I had a Savage benchmark in memory consisting of the following steps:
001-42,21,12
002-44 0
003-43 8
004-42,7,9
005-0
006-42,21,0
007-1
008-40
009-11
010-43 11
011-43 12
012-12
013-43 25
014-25
015-42,5,0
016-22 0
017-43 7
018-43 32
(FWIW, putting a number in the X register, followed by "f" and "B" executes the Savage Benchmark for the number of iterations in X. If X holds the traditional 2500, the results will show in about 48 seconds.)
After turning the 15C LE off, then executing "ON plus *", I get "Error 9".
Then, when I go to program mode, here's what's I find there now:
001-42,21,11
002-44 1
003-43 8
004-42,7,9
005-0
006-42,21,0
007-44,20,12
008-11
009-43 11
010-43 12
011-12
012-43 25
013-26
014-42,5,24
015-22 0
016-43 7
017-43 32
Really really strange!
I did a reset with "ON plus -", got the expected and proper "Pr Error", then reprogrammed the 15C LE. I was able to get this conditionn to repeat.
I conclude that one won't want to try any self tests if there is something in program memory!
What else lurks out there? I've only spent a couple of hours with my new 15C LE.
I'm not all that happy with this, but it seems to have some, er, possibilities. :-)
Edited: 9 Sept 2011, 9:50 p.m. after one or more responses were posted
Re: HP 15C LE Memory Corruption After Self Test Performance - robertoataulfo - 09-09-2011
Programming synthetic there we will :-)
And for $79 what do you want?
Maybe changing the system and putting the WebOS
Edited: 9 Sept 2011, 9:06 p.m.
Re: HP 15C LE Memory Corruption After Self Test Performance - hpnut - 09-09-2011
An updated 15C with micro SD card storage would have been a quantum leap in technology. never mind about keeping true to it's original specs.
Re: HP 15C LE Memory Corruption After Self Test Performance - Mike Morrow - 09-09-2011
But...any SD card capability would likely eat the 2032 batteries up.
Re: HP 15C LE Memory Corruption After Self Test Performance - Tim Wessman - 09-09-2011
Those are not valid self tests. They were supposed to be disabled or removed. I also told them to remove any mention of that in the manual. Apparently it was left in.
Simple solution, don't do it. :-)
TW
Edited: 9 Sept 2011, 9:31 p.m.
Re: HP 15C LE Memory Corruption After Self Test Performance - Michael de Estrada - 09-09-2011
So when will the errata sheets be available ?
Re: HP 15C LE Memory Corruption After Self Test Performance - Tim Wessman - 09-09-2011
Monday, when I give it to the support guy to put in the call center. And they are never availiable.
TW
Edited: 9 Sept 2011, 9:41 p.m.
Re: HP 15C LE Memory Corruption After Self Test Performance - Eric Smith - 09-09-2011
The SD card spec allows the cards to draw 150mA at 3.3V, and even more in some of the newest high-speed modes. Coin cells are rated for a few mA maximum.
Re: HP 15C LE Memory Corruption After Self Test Performance - Mike Morrow - 09-09-2011
Quote:
Those are not valid self tests. They were supposed to be disabled or removed. I also told them to remove any mention of that in the manual. Apparently it was left in.Simple solution, don't do it. :-)
Well, er, of course.
But I have the honor to suggest that is not an elegant solution to something that is, after all, canonical in the 15C LE manual.
It is a condition fairly easily detected. :-)
Edited: 9 Sept 2011, 9:48 p.m.
Re: HP 15C LE Memory Corruption After Self Test Performance - Gerson W. Barbosa - 09-09-2011
That's something beta-testers missed :-)
Well, I hope ON/. works. It does on my 12C+.
Re: HP 15C LE Memory Corruption After Self Test Performance - Mike Morrow - 09-09-2011
Quote:
That's something beta-testers missed :-)
Time for the master betas! :-)
Re: HP 15C LE Memory Corruption After Self Test Performance - uhmgawa - 09-09-2011
Quote:
But now, I can report that attempting to perform the "ON plus *" self test not only results in immediate "Error 9", but also corrupts any program that is in memory.
Huh, sounds like something is getting stomped on elsewhere as
a result of the test. The system self test does cycle through
memory alternately writing "55555555555555" and "aaaaaaaaaaaaaa"
patterns but takes care not to permanently alter data.
Re: HP 15C LE Memory Corruption After Self Test Performance - Katie Wasserman - 09-09-2011
Will updated firmware be made available that either locks out those tests that aren't suppose to be there, or implements them?
-Katie
Re: HP 15C LE Memory Corruption After Self Test Performance - Gene Wright - 09-09-2011
I think the beta testers were told the self-tests were not there so they assumed they were not there! Doh!
Re: HP 15C LE Memory Corruption After Self Test Performance - uhmgawa - 09-09-2011
Quote:
The SD card spec allows the cards to draw 150mA at 3.3V, and even more in some of the newest high-speed modes. Coin cells are rated for a few mA maximum.
True. But demountable SPI EEPROM in the new HP Voyager Flash
Card format would have worked quite well from all concerns.
Looks like a missed opportunity to seed a proprietary media
design into a captive market.
Re: HP 15C LE Memory Corruption After Self Test Performance - snaggs - 09-10-2011
2000 line programs written in the cryptic numeric codes? :)
Quote:
An updated 15C with micro SD card storage would have been a quantum leap in technology. never mind about keeping true to it's original specs.
Beatles records with misprinted abels are worth thousands - snaggs - 09-10-2011
These really could be limited edition collectors items :)
Daniel