User guide

19-17
Using the VCS / SystemC Cosimulation Interface
• SystemC source code including:
- A SystemC top-level simulation (sc_main) that instantiates the
interface wrappers and other SystemC modules.
- Any other SystemC source files for the design.
• An optional port mapping file. If you do not provide this file, the
interface uses the default port mapping definition. For details of
the port mapping file, see “Using a Port Mapping File” on page
19-26.
• An optional data type mapping file. If you don’t write a data type
mapping file, the interface uses the default file in the VCS
installation. For details of the data type mapping files, see “Using
a Data Type Mapping File” on page 19-27.
Generating the Wrapper
You use the vlogan utility with the -sc_model option to generate
and build the wrapper and interface files for Verilog modules for
cosimulation. This utility creates the ./csrc directory in the current
directory, just like VCS does when you include compile-time options
for incremental compilation. The vlogan utility writes the wrapper
and interface files in subdirectories in the ./csrc directory.
There is nothing you need to do to the files that vlogan writes. VCS
knows to look for them when you include the compile-time option for
using the interface. See “Compiling a Verilog Design Containing
SystemC Modules” on page 19-14.