The Hello in the AppPkg\Applications\Hello\ uses the “Print” function that is 
part of the UefiLib Library. While the Helloworld.c in the Beyond BIOS book is 
making a call using the EFI_SERVICES SystemTable pointer that is passed into 
its entry point.
Both are correct and both are current.

For writing and compiling look at the links for 
http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=Getting_Started_with_EDK_II
This show how to compile EDK II in several OS/Compiler environments

For another example:
http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=Getting_Started_Writing_Simple_Application


thanks,
Laurie

laurie.jarlst...@intel.com<mailto:laurie.jarlst...@intel.com>
EFI / Framework Technical
Marketing Engineering Team
(503) 712-9395
From: John Davis [mailto:davi...@gmail.com]
Sent: Thursday, January 30, 2014 12:38 PM
To: edk2-devel@lists.sourceforge.net
Subject: [edk2] regarding the chapter 4 sample program in the book Beyond Bios

Hello

I'm reading the Beyond Bios book in conjunction with the stuff on tianocore.  
The example code in chapter 4 of that book talks about a HelloApplication.  The 
format looks different from the sample code in AppPkg\Hello directory of the 
EDK2 src.  Is that format/api shown in the book obsolete?  The book does not 
say how to compile it or even where to put it and I am confused.

--
John F. Davis
6 Kandes Court
Durham, NC 27713
919-888-8358

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