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<H2><A NAME="SECTION000412000000000000000">
3.12 Startup Code</A>
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<P>
The compiler inserts a call to the C routine <I>_sdcc__external__startup()</I>
at the start of the CODE area. This routine is in the runtime library.
By default this routine returns 0, if this routine returns a non-zero
value, the static &amp; global variable initialization will be skipped
and the function main will be invoked Other wise static &amp; global
variables will be initialized before the function main is invoked.
You could add a <I>_sdcc__external__startup()</I> routine to
your program to override the default if you need to setup hardware
or perform some other critical operation prior to static &amp; global
variable initialization.
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<ADDRESS>
<I>Johan Knol</I>
<BR><I>2001-07-13</I>
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