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Differences for revision 1.20 from 1.19

--- /pcc_history.mdwn	2010/04/22 16:06:14	1.19
+++ /pcc_history.mdwn	2010/04/23 23:40:06	1.20
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-Students are more commonly required to submit [essay]( as part of their examinations or homework. Essays are less complicated to write since they are usually not lengthy nor do they need references or citations at times. This type of academic paper does not require students to perform comprehensive research since the topics are more general compared to others. Students are instructed to answer a topic question, compare two things, summarize a book or an article, describe a certain situation, or relate a personal experience. However, just because essays seem easy to write, this does not mean that these should not be well thought of, well planned nor well organized. No matter how easy a subject for an essay may seem, a professor may most likely give a low grade if it not properly written. A lot of instructors do not care how many pages the essay took because they give the grades based on the content of the paper and not by length. Even if not required, it is still best to research about the topics thoroughly to ensure that the paper reaches and better yet, exceed the expectations of the instructor. 
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+The compiler is based on the original Portable C Compiler by Stephen C. Johnson, written in the late 70's. Even though much of the compiler has been rewritten, some of the basics still remain.
+PCC debuted in Unix Version 7 and replaced the DMR compiler (Dennis Ritchie's original C compiler) in both System V and the BSD 4.x releases.
+Some history about pcc is in the [A History of UNIX before Berkeley: UNIX Evolution: 1975-1984]( and in the [Evolution of C](
+A copy of S. C. Johnson's and Donn Seeley's 1978 ``A Tour Through the Portable C Compiler'' is available in [HTML](,
+[Postscript]( or [PDF]( (For current pcc internal documentation, see the [[internals]] wiki page.)
+About 50% of the frontend code and 80% of the [[backend|internals]] code has been rewritten. Most stuff is written by Anders Magnusson, with the exception of the data-flow analysis part and the SSA conversion code which is written by Peter A Jonsson, and the Mips port that were written as part of a project by undergraduate students at Luleaa University of Technology (LTU).
+It was publicly announced to the NetBSD community on September 14, 2007. Shortly later it was
+imported to the OpenBSD, NetBSD, and pkgsrc source trees.
+On January 27, 2008, the version was increased to 0.9.9 as pcc supported C99 language constructs.

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