Under some circumstances, the VSIM command in MATLAB does not correctly locate and launch ModelSim.
1. I installed ModelSim 8.c on D:\Applications directory
2. I allowed ModelSim to set my path (ModelSim added the executable path to the end of MATLAB path).
3. I was able to find the vsim executable using "which vsim" command in my DOS window
4. After starting MATLAB and typing "vsim" in the command window, I got a message saying MATLAB could not find the "vsim" executable.
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