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<H2><A NAME="predefined-constants"></A> <A NAME="s13">13.</A> <A HREF="ca65.html#toc13">Predefined constants</A></H2>
<P>For better orthogonality, the assembler defines similar symbols as the
compiler, depending on the target system selected:</P>
<P>
<UL>
<LI><CODE>__ACE__</CODE> - Target system is <CODE>ace</CODE></LI>
<LI><CODE>__APPLE2__",</CODE> - Target system is <CODE>apple2</CODE></LI>
<LI><CODE>__APPLE2ENH__",</CODE> - Target system is <CODE>apple2enh</CODE></LI>
<LI><CODE>__ATARI__</CODE> - Target system is <CODE>atari</CODE></LI>
<LI><CODE>__ATMOS__",</CODE> - Target system is <CODE>atmos</CODE></LI>
<LI><CODE>__BBC__",</CODE> - Target system is <CODE>bbc</CODE></LI>
<LI><CODE>__C128__</CODE> - Target system is <CODE>c128</CODE></LI>
<LI><CODE>__C16__</CODE> - Target system is <CODE>c16</CODE></LI>
<LI><CODE>__C64__</CODE> - Target system is <CODE>c64</CODE></LI>
<LI><CODE>__CBM__</CODE> - Target is a Commodore system</LI>
<LI><CODE>__CBM510__</CODE> - Target system is <CODE>cbm510</CODE></LI>
<LI><CODE>__CBM610__</CODE> - Target system is <CODE>cbm610</CODE></LI>
<LI><CODE>__GEOS__",</CODE> - Target system is <CODE>geos</CODE></LI>
<LI><CODE>__LUNIX__",</CODE> - Target system is <CODE>lunix</CODE></LI>
<LI><CODE>__NES__",</CODE> - Target system is <CODE>nes</CODE></LI>
<LI><CODE>__PET__</CODE> - Target system is <CODE>pet</CODE></LI>
<LI><CODE>__PLUS4__</CODE> - Target system is <CODE>plus4</CODE></LI>
<LI><CODE>__SUPERVISION__",</CODE> - Target system is <CODE>supervision</CODE></LI>
<LI><CODE>__VIC20__</CODE> - Target system is <CODE>vic20</CODE></LI>
</UL>
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