223cc6685e
git-svn-id: svn://svn.compuextreme.de/Viitor/V963/Viitor_cc65@5933 504e572c-2e33-0410-9681-be2bf7408885
86 lines
2.6 KiB
HTML
86 lines
2.6 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML>
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<META NAME="GENERATOR" CONTENT="LinuxDoc-Tools 0.9.20">
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<TITLE>Atari specific information for cc65: Platform specific header files</TITLE>
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<LINK HREF="atari-5.html" REL=next>
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<LINK HREF="atari-3.html" REL=previous>
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<LINK HREF="atari.html#toc4" REL=contents>
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<BODY>
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<A HREF="atari-5.html">Next</A>
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<A HREF="atari.html#toc4">Contents</A>
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<HR>
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<H2><A NAME="s4">4.</A> <A HREF="atari.html#toc4">Platform specific header files</A></H2>
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<P>Programs containing Atari specific code may use the <CODE>atari.h</CODE>
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header file.</P>
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<H2><A NAME="ss4.1">4.1</A> <A HREF="atari.html#toc4.1">Atari specific functions</A>
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</H2>
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<P>The functions listed below are special for the Atari. See the
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<A HREF="funcref.html">function reference</A> for declaration and usage.</P>
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<P>
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<UL>
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<LI>get_ostype</LI>
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<LI>get_tv</LI>
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<LI>_gtia_mkcolor</LI>
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<LI>_getcolor</LI>
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<LI>_getdefdev</LI>
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<LI>_graphics</LI>
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<LI>_rest_vecs</LI>
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<LI>_save_vecs</LI>
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<LI>_scroll</LI>
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<LI>_setcolor</LI>
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<LI>_setcolor_low</LI>
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</UL>
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</P>
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<H2><A NAME="ss4.2">4.2</A> <A HREF="atari.html#toc4.2">Hardware access</A>
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</H2>
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<P>The following pseudo variables declared in the <CODE>atari.h</CODE> header
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file do allow access to hardware located in the address space. Some
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variables are structures, accessing the struct fields will access the
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chip registers.</P>
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<P>
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<DL>
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<DT><B><CODE>GTIA_READ</CODE> and <CODE>GTIA_WRITE</CODE></B><DD><P>The <CODE>GTIA_READ</CODE> structure allows read access to the GTIA. The
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<CODE>GTIA_WRITE</CODE> structure allows write access to the GTIA.
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See the <CODE>_gtia.h</CODE> header file located in the include directory
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for the declaration of the structure.</P>
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<DT><B><CODE>POKEY_READ</CODE> and <CODE>POKEY_WRITE</CODE></B><DD><P>The <CODE>POKEY_READ</CODE> structure allows read access to the POKEY. The
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<CODE>POKEY_WRITE</CODE> structure allows write access to the POKEY.
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See the <CODE>_pokey.h</CODE> header file located in the include directory
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for the declaration of the structure.</P>
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<DT><B><CODE>ANTIC</CODE></B><DD><P>The <CODE>ANTIC</CODE> structure allows read access to the ANTIC.
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See the <CODE>_antic.h</CODE> header file located in the include directory
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for the declaration of the structure.</P>
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<DT><B><CODE>PIA</CODE></B><DD><P>The <CODE>PIA</CODE> structure allows read access to the PIA 6520.
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See the <CODE>_pia.h</CODE> header file located in the include directory
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for the declaration of the structure.</P>
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</DL>
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</P>
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<HR>
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<A HREF="atari-5.html">Next</A>
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