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这是每个版本的changelog:

http://bugs.freepascal.org/changelog_page.php

这是2.6.4的changelog:

http://wiki.freepascal.org/User_Changes_2.6.4

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学习手册：

http://www.math.uni-leipzig.de/pool/tuts/FreePascal/prog/

http://www.math.uni-hamburg.de/it/software/fpk/user/user.html

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另一本书：

Pascal Implementation: A Book and Sources
http://homepages.cwi.nl/~steven/pascal/

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Pascal编译器大全：

http://www.pascaland.org/pascall.htm

https://code.google.com/p/llvm-pascal/

FreePascal经典资料