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Problem using RTL Flash File system

Hi, I'm using AT91SAM7SE32 with an external SDRAM and NOR flash for my prototype printer.

I'm trying to use the Flash File system provided with the keil. In my application the SDRAM is of 8Mbytes, so I have divided it into 2 regions of equal size, one for the application data and other as file storage. I have configured the Fileconfig.c as per above setting. I'm using 64 sectors.

The problem is that when I open a file for writing then the address return by fopen is not in area which is allocated for it but in the application area.

Can somebody tell me if I'm missing to something which is causing such a problem.

For your information Keil version which I'm using is MDK v3.05 and the RTL library v3.10.

Please help me soon.