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I am retired, but for MANY years designed, developed and maintained software for process control real time applications.

Is there a package available that would read as input old Fortran Source code and create a visual flowchart output that could then be used by newer programmers as a starting point to develop code on a newer hardware platform?

I am an old programmer who could read the old code and manually create flowcharts and a written description [I have done this several times in the past], but I was thinking there might be a package or program out there that mechanizes most of it.

If there is such a package, if it also allowed for manual modification of the generated flowchart file[s] after they are created, it could be used to move a control system from old hardware to newer hardware much faster and easier, with programmers adept on their new computer control system.

Thank you for any comments or references.

What I have tried:

Have tried looking for something like this, but did not find anything yet that inputs old Fortran code and produces a flowchart as output.
Updated 23-Mar-23 4:17am
OriginalGriff 21-Mar-23 17:30pm    
Given that Fortran code was generally as structured as a pile of spaghetti (and that includes my Fortran code) I'd suggest it's unlikely. And if there was, it would be unlikely to run on modern hardware - maybe an IBM 360, but as a Windows app? I doubt it.
Sorry ... I think you will have to get out your flowchart template and a pencil ... :laugh:
donald kraska 21-Mar-23 18:10pm    
Think you are right! Guess I'll contact my former employer and ask if they still use Fortran and they want it manually reverse engineered into flowcharts and a good description that someone could develop new code from.

I need more mental stimulation besides trading stocks and Sudoku!

I need more mental stimulation besides trading stocks and Sudoku!

Try learning a new language - C# for example. The whole IDE is free from Microsoft (google for "Visual Studio Community") and there is a wealth of books out there that will teach you C# and the .NET frameworks.

I suspect you will wonder why you stuck with Fortran for so long ... :laugh:
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I wonder why my former employer has stuck with Fortran so long...

I'd like to help my former employer convert this Fortran to a flowchart with description, which is why I posted the original question. This would then allow others [including me] to convert the code to a new system. I want to present this idea to the former employer as a possible way to convert without as much work.
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donald kraska 23-Mar-23 10:46am    
Thank you! I will look into it.

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