Dual port RAM shared between Nios and async interface

Hi,

if you can use the DSP AMI control signals directly as avalon master signals (even it is an asynchronous interface the signal are related to the a clock) you can use a simple tcl script to export the avalon master signals to the top level. The tcl script creates a component with a master interface where you can connect one slave interface of the dpram. Additionally the master signal are exported. You do not need a HDL file for exporting the signals. You need a small logic for connecting avalon read- and writedata to the dsp databus . If your DSP signals do not match you must create your own avalon master component where you have to convert the DSP signals to avalon master signals. An others solution is to build your own dpram component with one avalon slave interface and one export interface. AFAIK simply exporting one port of the sopc builder dpram is not possible.