Lpc2000

Hi Robert !

Thanks for your idea !
I have desoldered one of the memory chips and limited the SRAM to 2MB now.
At the moment, i have no error and uCLinux is booting up to a certain
point without any memory problem.

I will try to replace the other chip with a new one. Maybe it it damaged
by ESD or something else.

Before i desoldered, i meassured at the address lines and all seams ok.
No error so far ! It is a little bit strange.

Thanks,
Timo

Robert Adsett schrieb:

>At 09:44 AM 4/25/2006 +0100, Timo Bruderek wrote:
>  
>
>>If i write to memory using a pointer in a C-routine, everthing looks ok
>>!! Even if i check the content of the memory with OpenOCD. !!
>>
>>Has anybody an idea, where i can have a look for the error ??
>>    
>>
>
>Some debugging suggestions.  It's possible but unlikely that  uCLinux  is 
>copying in a strange fashion.  The first thing to do is probably to verify 
>your memory interface is performing properly.  The simple test you've 
>performed is a start but it's not sufficient.  You need a full memory test 
>to check for various possible fault like stuck or shorted address lines.  I 
>don't have one handy but I think Embedded Systems had a nice one a while 
>back and I'm sure someone here could point you to a good starting point.
>
>Robert
>
>
>" 'Freedom' has no meaning of itself.  There are always restrictions,   be 
>they legal, genetic, or physical.  If you don't believe me, try to chew a 
>radio signal. "  -- Kelvin Throop, III
>http://www.aeolusdevelopment.com/
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