3.5.3.2.4 I/O Memory
(Ask a Question)Any memory that is accessed by both the software testbench (parent functions of the top-level function) and hardware functions (the top-level functions and its descendants) becomes an I/O memory. These are any non-constant arguments for top-level function or global variables that are accessed by both the software testbench and hardware functions. I/O memories become memory interfaces of the top-level module for the generated hardware, where no actual memories are instantiated within the generated hardware for them. For more information on interfaces, please refer to Top-Level RTL Interface.