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iPod Nano - RAM?

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AVT:
I've got an iPod nano with some problems:

1) Apple firmware refuses to boot
2) Will boot after 30-40 restarts, but upon restart the flash memory is corrupted
3) Rockbox firmware boots
4) After ~20mb of songs have been played, major sound distortion problems
5) Rockbox sometimes crashes

I originally thought my problems were caused by the flash memory the firmware was on being defective, but I've done some testing, and it appears to be fine.

I now think that the RAM on this iPod may be defective. The only thing about the RAM I can find on Google is there's 32mb of it.

Is there some way to test the RAM through Rockbox?

What's the manufacturer/model of the RAM?

Thanks in advance!

edit: Alternatively, is there a way I can restrict Rockbox to only using 16mb RAM? This would confirm that this is the problem.

dreamlayers:
The Video iPod has diagnostic mode, which may be reached by turning on or restarting and holding REW (left) and select (middle) buttons when the Apple logo appears.  Based on a quick web search, it seems the Nano also has diagnostics which may be reached the same way.

AVT:
I've already looked at diagnostics, which shows no way to test the RAM.

dreamlayers:

--- Quote from: AVT on December 07, 2008, 06:53:25 PM ---I've already looked at diagnostics, which shows no way to test the RAM.

--- End quote ---
Are you sure?  Do you really have no SDRAM tests like here?

You could try building a custom version of Rockbox with smaller RAM size.

AVT:

--- Quote from: dreamlayers on December 07, 2008, 07:36:24 PM ---
--- Quote from: AVT on December 07, 2008, 06:53:25 PM ---I've already looked at diagnostics, which shows no way to test the RAM.

--- End quote ---
Are you sure?  Do you really have no SDRAM tests like here?

You could try building a custom version of Rockbox with smaller RAM size.

--- End quote ---

My iPod doesn't have SDRAM in it's diagnostics, so I can't test for it.

I could probably build a custom version. If I do this, I could probably also strip it down quite a bit, since there's many features that I have no need for. I DL'ed the source, and am now going to take a look at it to see what I can do. If you have any tips to point me in the right direction, I'd appreciate it.

edit: The source is bigger than I thought. No way I'll be able to find where the RAM information is just by looking, especially since I'm somewhat unfamiliar with C.

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