223cc6685e
git-svn-id: svn://svn.compuextreme.de/Viitor/V963/Viitor_cc65@5933 504e572c-2e33-0410-9681-be2bf7408885
46 lines
1.3 KiB
HTML
46 lines
1.3 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>Oric Atmos specific information for cc65: Platform specific header files</TITLE>
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<LINK HREF="atmos-5.html" REL=next>
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<LINK HREF="atmos-3.html" REL=previous>
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<LINK HREF="atmos.html#toc4" REL=contents>
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<A HREF="atmos-5.html">Next</A>
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<A HREF="atmos.html#toc4">Contents</A>
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<H2><A NAME="s4">4.</A> <A HREF="atmos.html#toc4">Platform specific header files</A></H2>
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<P>Programs containing Atmos specific code may use the <CODE>atmos.h</CODE> header file.</P>
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<H2><A NAME="ss4.1">4.1</A> <A HREF="atmos.html#toc4.1">Hardware access</A>
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</H2>
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<P>The following pseudo variables declared in the <CODE>atmos.h</CODE> header file do allow
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access to hardware located in the address space. Some variables are
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structures, accessing the struct fields will access the chip registers.</P>
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<P>
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<DL>
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<DT><B><CODE>VIA</CODE></B><DD><P>Access to the VIA (versatile interface adapter) chip is available via the
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<CODE>VIA</CODE> variable. The structure behind this variable is explained in <CODE>_6522.h</CODE>.</P>
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</DL>
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</P>
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<HR>
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<A HREF="atmos-5.html">Next</A>
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<A HREF="atmos.html#toc4">Contents</A>
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