Cowon D2

[markV]

Yes, I've been able to reproduce the behaviour and note it down (sorry for the style):

With 16 Mb SD card copy .rockbox folder
boots
choose file - microSD1 [the first time I've reached a music file and even started playing, second time (after format + copy .rockbox folder) just saw the menu, then:
*PANIC* updating size on empty dir entry 42 [first time] 39 [second time]
wait 15-20 sec, nothing happens
no choice to power off
[I started the original firmware "by mistake"]
power on to reboot, shows usual Rockbox boot screen with the file not found error:
  ata
  mount
  file not found
plug it back to PC
empty .rockbox folder

256 Mb SD card copy .rockbox folder
first time boot:
  ata
  mount
  file not found
shuts down by itself
plug it back to PC
leaves only one weird named document :
·:
format + copy .rockbox folder
second time boot, error message:
  length 8FE0c
  checksum: 0
  model name:
  loading rockbox.d2
  read failed (image)
shuts down by itself
plug back to PC
no file left

That's about it.  I wrote that just in case it helps, not because it's a big problem (for me).
Just to mention, my PC is on Mandriva Linux and I used "drakdisk" to format both cards in FAT16.  You're right: my 16Mb card was also FAT12.  Is it wrong to try and format it in FAT16 (I mean could the result be weird with the file system and all ?)

Thank you,
MarkV

[shotofadds]

I'm not familiar with drakdisk at all, could you possibly try a more standard formatter such as mkfs.vfat or even try formatting using a Windows machine? Or another card that still has the original manufacturer's format?

Incidentally, I'm not sure it's valid to have a 16Mb FAT16 partition at all - though I could be wrong. Certainly the Windows tools don't allow it and will always override with FAT12 instead.

[DiveSlip]

Hi, guys. Honestly, I don't read all this theme, but on my forum (cowonworld.ru) one guy's posted two links with sdk and maybe you can find something interesting for you.
If you need some help with downloading, I'll help you, of course.

[pyro_maniac]

Hi, guys. Honestly, I don't read all this theme, but on my forum (cowonworld.ru) one guy's posted two links with sdk and maybe you can find something interesting for you.
If you need some help with downloading, I'll help you, of course.

Did you take a look into these files?

EDIT: i did. The first file seems to be a backup of a telechip project folder or something like that. "TCC7xx DMP SDK" is named at many places. But there are Telechip copyrights everywhere. I don't know if its for the D2 because there is a WM8750 driver.

[DiveSlip]

Did you take a look into these files?

Yes, I do. But that files are not useful for me.

[pyro_maniac]

Yes, I do. But that files are not useful for me.

are the first and the second file similar?

[vodi]

@shotofadds:

Today i copied some files from the internal flash to a 16GB SDHC card, because I have the problem, that some .flac files are skipped immediately while playing.

GNU diff only says

Code: [Select]

Binary files /media/D2/music/Texta/Blickwinkel/01 - Text vs. Autor vs. Hoerer.mp3 and /media/VODI_SDHC/music/Texta/Blickwinkel/01 - Text vs. Autor vs. Hoerer.mp3 differ

What tool should I use to compare the files?

Bye, Vodi

[DiveSlip]

are the first and the second file similar?

No. The second file is about 1,1 GB. I can't say what the file contains, because a copy of the file is at home and I'm not.

[shotofadds]

What tool should I use to compare the files?

You don't really need to. We already identified the likely cause of these problems earlier in the thread, so doing more diffs isn't going to help...

@DiveSlip / pyro_maniac:

Those Telechips SDK links have been posted here before, but since it is not open source (GPL) code there is no way we could use any of it in Rockbox.

[pyro_maniac]

Those Telechips SDK links have been posted here before, but since it is not open source (GPL) code there is no way we could use any of it in Rockbox.

I know that to use the code is not allowed but the addresse may not help?

[dohashi]

First, thanks for all the work getting the port where it is today.

I've been testing the latest firmware (version r22056M-090726 from the Rockbox info page).  I've noticed two problems.  First, I occasionally hear a very short skip or pause in playback.  Most of my music is in ogg format, stored on the internal memory, so it may be related to ogg playback.  I've listened to some mp3s and not noticed the skip there.

Also, I was able to crash rockbox with the following message (or similar to this, I wrote down the number, but not the whole message)

Illegal Instruction at
A0632000

I had a randomized playlist containing all the music on the player and when transitioning from one track to the next, rockbox would crash.  I was able to reproduce this a couple times at the same point, both by allowing the first track to finish, or by skipping the track.  However both tracks played fine on their own.

Darin

[blueblazer22x]

I've been testing the latest firmware (version r22056M-090726 from the Rockbox info page).  I've noticed two problems.  First, I occasionally hear a very short skip or pause in playback.  Most of my music is in ogg format, stored on the internal memory, so it may be related to ogg playback. 


Darin

I've noticed the same problem of a short skip.  All of my music is OGG.

EDIT:  It seems that the skips only occur on OGG tracks played from the internal memory and they always occur in the same place.  If I rewind the skip occurs again and again at the same time in the track.  I haven't noticed any skips on my OGG tracks stored on the SD card (r22056).

[shotofadds]

It seems that the skips only occur on OGG tracks played from the internal memory and they always occur in the same place.  If I rewind the skip occurs again and again at the same time in the track.  I haven't noticed any skips on my OGG tracks stored on the SD card (r22056).

A few posts back we identified a problem where single bit errors were found in files read from the internal memory, due to a lack of ECC error correction. You seem to be reporting the same thing. It's also quite possible this is responsible for the exception errors dohashi has seen.

I've partly implemented a fix for this, but it's not ready yet.

[vodi]

Hi! I'm testing a SD/SDHC enabled build (r.....), placed all my .flac files on the SDHC Card and now they don't get skipped any more. But today I listened a few hours to music and the D2 often hangs on track changes (I see the WPS, but it doesn't play music or reacts on button presses), or it simply reboots or i get "undefined instruction". The latest was "Undefined instruction at 2009007C".

I don't think, this is related to the SD/SDHC function, so I posted it here, my SDHC card isn't corrupt at all.

bye, Vodi

[samokhov]

vodi, it's probably the same problem that we've been talking about earlier: the lack of single-bit error correction. I presume that SD cards are quite capable of generating single-bit errors as well