Steve,
I am new to this group and I saw a file folder with Mach3 label so thought that it was a public leatory for all Mach3 questions- sorry but your file buzzed by my eyes without a trace. Now that I have seen your questions after you have pointed it to me

I can tell you that it is very easy to 'create' that file. Notice that I am writing 'create" and not create... Brian creats... Art creats but we mortals can only either calculate the values for that file or guess them.
Either way, it is simple and takes me only few minutes on my machine because I have not learned to save that file.
There are two things that go into that file: pinouts and you should have those numbers anyway and frequencies calculated (or guessed - I am a good guesser) from pitch, ratio itp. I am sure that is not the answer you expected but if I were you I would abandon an idea of waiting for that file to appear. Not gonna happen. Good luck! Mike