Creating a new design module

To insert a new module, invoke the Module -- Add Module (F1) function. You should then give the new module a proper name. A template VHDL file is created automatically. The module name is always the same as the entity name in VHDL. Each module in the design hierarchy explorer is associated with a VHDL file. To view the VHDL file, invoke Edit VHDL function, or highlight the module and press Enter key.

Add a new module and name it "Hex2LED", as shown in figure below. The module converts a 4-bit hex code to 7-segment LED display output.