Link for ModelSim

Compiling the Manchester Receiver VHDL Files

After you create or edit your VHDL source files, you compile them. As part of this tutorial, set up a design library and compile iqconv.vhd, decoder.vhd, and statecnt.vhd:

1. Start ModelSim, if it is not already running, from MATLAB by issuing a call to the MATLAB vsim function.

2. Check that your current directory is set to the /vhdl/manchester subdirectory you created in Setting Up Tutorial Files. If you set up the files elsewhere, adjust the path accordingly.

   ModelSim> cd C:/MyPlayArea/vhdl/manchester
   

3. Verify that the files are in the current directory by entering the ls command.

4. Create a design library to hold your compilation results. To create the library and required _info file, enter the vlib and vmap commands as follows:

   ModelSim> vlib work
   
   ModelSim> vmap work work
   

   Note   You must use the ModelSim File menu or vlib command to create the library directory to ensure that the required _info file is created. Do not create the library with operating system commands.

5. Compile the three VHDL files. One way of compiling a file is to click the filename in the project workspace and select Compile–>Compile All. Another alternative is to specify the name of the VHDL file with the vcom command, as follows:

   ModelSim> vcom iqconv.vhd
   ModelSim> vcom decoder.vhd
   ModelSim> vcom statecnt.vhd
   

   If the compilations succeed, informational messages appear in the command window and the compiler populates the work library with the compilation results.

   

VHDL Code for the State Counter

Developing the Manchester Receiver MATLAB Functions