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Lpc2000

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Message

cant seem to use external sdram on phytec 2294

2005-02-07 by wunny83

Hi im new at this but im having trouble storing data to the adress 
0x81000000, while my program will run fine if internal memory is 
used.

Im using keil and uvision ulink with the gcc compiler.

I have set up the text start 0x80000000 and data start 0x81000000 in 
the linker while my top stack is 0x81010000 while I have tried many 
others because i dont know the exact value of the top stack for 
external memory; my linker script file is also se up properly.
I have also tried different memmap settings 0x02 and 0x03.

When debugging using ulink jtag, the variable that are initailized 
do not get values and eventually the pc will go to 0x00-0x14 range.

Everything works fine when using internal mem with data start 
0x40000000 and top stack 0x40004000

Thanks in advance

Wun

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