Dual port shared memory

Hi!

I am working on a project which includes NIOS as the main host processor and it has other parts designed in verilog (a transceiver, a control unit). In the project a dual port memory is to be shared by NIOS and the control unit. I mean both of them can write data to the memory, with NIOS having the higher priority.

I have configured NIOS using SOPC builder, however I am confused about how can I add the dual port memory so that its one end communicates with NIOS and the other end communicates with the control unit designed in verilog. Can somebody help me with this. Thanks