XPS, DDR SDRAM and test peripheral example

[masudasim]

Hello all

I am using xilinx platform studio (XPS) for testing my FX12 minin module
development board and facing some problems.

Using base system builder, i select only RS232 and Mini module GPIO leds
and two examples were created,one test memory and second test
peripheral.Test memory resides in BRAM while test peripheral in DDR SDRAM.

I downloaded bit file to my board successfully for both memory and
peripheral examples one by one using xps download bitstream but problem is
that test peripheral example shows nothing (test memory example shows
correct results on hyperterminal).

I am quite new to xps and fpga, kindly guide me what can be the problem?I
guess it has to do something with executing code from external DDR SDRAM?Kindly help me how to run code from external DDR SDRAM using XPS.

I am using EDK 10.1.

Thanks in advance