Could the writeln issue, be a link time and not compile time? I remember having to specify the Pascal runtime libraries (more than one?) at link time.
Tim > On Feb 8, 2018, at 7:51 AM, Gary Lee Phillips <tivo.ov...@gmail.com> wrote: > > VMS Pascal conforms to the language standards. So does Turbo Pascal, if the > code is written to standard. > > The problem with porting in Pascal comes when language extensions are used. > These are often proprietary and/or hardware specific. On OpenVMS much of the > extended capability depends on calling system libraries, all of which are > supported. Turbo Pascal was designed specifically for the IBM PC and > "compatible" systems, and contains a lot of proprietary extensions that will > not be recognized by VMS Pascal's compiler. > > If your code depends on graphic functions, the ones in Turbo Pascal are > almost entirely peculiar to that environment and will require a lot of > rewriting. These use custom libraries that come with the compiler, and > probably most can be duplicated by using OpenVMS system calls in some format. > Some analysis will be required to identify the hardware specific code and > select appropriate substitutions. > > As for "free pascal" there are several incompatible implementations that go > by the name, so I'm not sure what you have used. However, all of them pretty > much support the original language definition and code that stays within that > standard definition will work without translation. Extensions that use > library calls or custom units are going to be the area that requires > (possibly a lot of) work. > > The full VMS Pascal manuals are available in PDF form online and you should > begin there. > > By the way, VMS Pascal definitely supports writeln. It also has record > structures, etc. Those are all part of the standard language definition. We'd > need to see a sample of your code that doesn't work in order to figure out > where your problem comes from. > > _______________________________________________ > Simh mailing list > Simh@trailing-edge.com > http://mailman.trailing-edge.com/mailman/listinfo/simh _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
