Rockbox Development > New Ports
Cowon D2
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:
--- Quote from: dohashi on August 08, 2009, 12:16:20 PM ---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
--- End quote ---
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:
--- Quote from: blueblazer22x on August 08, 2009, 02:06:37 PM ---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).
--- End quote ---
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 ::)
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