Connecting BRAM block to Self designed BRAM controller

Hi all,

I am using XPS 8.2i and ISE 8.2i and a virtex-4 board.As a part of assignment, I have to write a verilog/vhdl code for a BRAM controller by which we can perform read/write operation on a BRAM block.I have written a desired verilog code for BRAM controller. Also I have added a Bram block to my assembly from pool.But My System assembly does not show any port in my BRAM controller to which I can connect the BRAM block.

Any suggestions would be greatly appreciated

thanks Rinky .