DESim Backend

The backend dynamic link library (DLL) for DESim using ModelSim/Questa's Verilog Procedural Interface (VPI) to connect DESim's frontend to circuit's being simulated. If the backend needs to be rebuilt, follow the steps below.

Rebuilding the DESim Backend on Windows

1. Check that MinGW gcc/g++ is working
   1. Questa: used MinGW that came with Questa
      • For example, our path to the compiler was "C:\intelFPGA\21.1\questa_fse\gcc-7.4.0-mingw64vc15\bin"
   2. ModelSim: use MinGW that was downloaded from the internet
      • For example, our path to the compiler was "C:\MinGW\bin"
2. Check that the ModelSim/Questa/MinGW paths in WindowMake.bat reflect those on your computer
3. Run WindowsMakeClean.bat
4. Run WindowsMake.bat
5. Run WindowsMakeRelease.bat

Rebuilding the DESim Backend on Linux

1. The backend was compiled using the "build-essential" package on Ubuntu 20.04
   1. To get this package, run the following command: 'sudo apt install build-essential'
2. Check that the ModelSim/Questa paths in the Makefile reflect those on your computer
3. Run 'make clean'
4. Run 'make' or 'make SIMULATOR=modelsim'
5. Run 'make release' or 'make SIMULATOR=modelsim release'