Rudolf Usselmann wrote: > In the men time, I did find "vpp". However, it does not get > rid of the 'ifdef, only of `ifndef. BTW: Vpp is free, and > runs an linux (and I presume any other unix). Source code > can be found on the net ... If I don't remember wrong, Icarus Verilog comes with a preprocessor. http://icarus.com/eda/verilog/index.html regards johan