Hi, When use NCSim5.7_s001, I found SystemVerilog class cannot be compiled. For example, ncvlog/EXPMPA = Section [A.1] of the LRM defines the syntactic structure of Verilog. At the highest level, a 'description' begins with the keyword 'module', 'macromodule' or 'primitive'. One of these words was not found. Check your spelling and file organization. What's the latest version of NCSim and how about SystemVerilog support? BTW, Cadence's SourceLink website is too poor to tolerate (always break and cannot see the webpage)! Best regards, Davy