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sdcc-3.0.0-0.fc14.x86_64.rpm

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<H2><A NAME="SECTION00424000000000000000"></A><A NAME="966"></A><A NAME="967"></A>
<BR>
3.2.4 MCS51 Options
</H2>

<UL>
<LI>[<B>--model-small<A NAME="970"></A></B>] Generate
code for Small model programs, see section Memory Models for more
details. This is the default model.
</LI>
<LI>[<B>--model-medium<A NAME="971"></A></B>] Generate
code for Medium model programs, see section Memory Models for more
details. If this option is used all source files in the project have
to be compiled with this option. It must also be used when invoking
the linker.
</LI>
<LI>[<B>--model-large<A NAME="972"></A></B>] Generate
code for Large model programs, see section Memory Models for more
details. If this option is used all source files in the project have
to be compiled with this option. It must also be used when invoking
the linker.
</LI>
<LI>[<B>--model-huge<A NAME="973"></A></B>] Generate
code for Huge model programs, see section Memory Models for more details.
If this option is used all source files in the project have to be
compiled with this option. It must also be used when invoking the
linker.
</LI>
<LI>[<B>--xstack<A NAME="974"></A></B>] Uses a pseudo
stack in the pdata<A NAME="975"></A> area
(usually the first 256 bytes in the external ram) for allocating variables
and passing parameters. See section <A HREF="node98.html#sub:External-Stack">3.18.1.2</A>&nbsp; External
Stack for more details.
</LI>
<LI>[<B>--iram-size</B>&nbsp;&lt;Value&gt;<A NAME="978"></A>] Causes
the linker to check if the internal ram usage is within limits of
the given value.
</LI>
<LI>[<B>--xram-size</B>&nbsp;&lt;Value&gt;<A NAME="980"></A>] Causes
the linker to check if the external ram usage is within limits of
the given value.
</LI>
<LI>[<B>--code-size</B>&nbsp;&lt;Value&gt;<A NAME="982"></A>] Causes
the linker to check if the code memory usage is within limits of the
given value.
</LI>
<LI>[<B>--stack-size</B>&nbsp;&lt;Value&gt;<A NAME="984"></A>] Causes
the linker to check if there is at minimum &lt;Value&gt; bytes for stack.
</LI>
<LI>[<B>--pack-iram</B>&nbsp;<A NAME="986"></A>] Causes
the linker to use unused register banks for data variables and pack
data, idata and stack together. This is the default and this option
will probably be removed along with the removal of --no-pack-iram.
</LI>
<LI>[<B>--no-pack-iram</B>&nbsp;(deprecated)<A NAME="988"></A>] Causes
the linker to use old style for allocating memory areas. This option
is now deprecated and will be removed in future versions.
</LI>
<LI>[<B>--acall-ajmp</B>&nbsp;<A NAME="990"></A>] Replaces
the three byte instructions lcall/ljmp with the two byte instructions
acall/ajmp. Only use this option if your code is in the same 2k block
of memory. You may need to use this option for some 8051 derivatives
which lack the lcall/ljmp instructions..
</LI>
</UL>
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2011-03-20
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