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protected, procedure, call, this, article, does, cite, sources, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, december, 2009, learn,. This article does not cite any sources Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Protected procedure call news newspapers books scholar JSTOR December 2009 Learn how and when to remove this message A Protected Procedure Call PPC is a messaging facility wherein messages are sent and received using procedure call interfaces They are a core component of the K42 operating system This computer science article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Protected procedure call amp oldid 1070390922, wikipedia, wiki, book, books, library,