Call graph for a turbo pascal program

Question

I am doing some maintenance to a 18 year old pascal program. To help me understand how everything fits together I want to draw a call graph. However I cant find any software that can draw a call graph for pascal source. I am currently using Turbo Pascal 7 and have no idea about the abilities of other pascal compilers.

Answer 1

Pascal analyser from Peganza maybe?

http://www.peganza.com/products_pal.htm

Commercial though, but description has "call tree" in it.

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New URL: https://www.peganza.com/products.html#PAL