of the executable file, and must be
longword (32-bit) aligned.  These rules allow the boot loader to find and
synchronize with the text segment in the a.out file without knowing
beforehand the details of the a.out variant.  The layout of the header is
as follows:<P>

<pre>
	+-------------------+
0	| magic: 0x1BADB002 |	(required)
4	| flags		    |	(required)
8	| checksum	    |	(required)
	+-------------------+
8	| header_addr	    |	(present if flags[16] is set)
12	| load_addr	    |	(present if flags[16] is s