9763b5530d
git-svn-id: svn://svn.compuextreme.de/Viitor/V961/Viitor_cc65@4236 504e572c-2e33-0410-9681-be2bf7408885
44 lines
1.3 KiB
HTML
44 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>Commodore VIC20 (aka VC20) specific information for cc65: Memory layout</TITLE>
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<LINK HREF="vic20-4.html" REL=next>
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<LINK HREF="vic20.html#toc3" REL=contents>
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<H2><A NAME="s3">3.</A> <A HREF="vic20.html#toc3">Memory layout</A></H2>
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<P>cc65 generated programs with the default setup run with the I/O area and the
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kernal and BASIC ROM enabled (RAM at $A000 - $BFFF may be used
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for the heap), which gives a usable memory range of $1000 - $1DFF.
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All ROM entry points may be called directly without additional code.</P>
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<P>Special locations:</P>
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<P>
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<DL>
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<DT><B>Text screen</B><DD><P>The text screen is located at $1E00 (as in the standard setup).</P>
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<DT><B>Stack</B><DD><P>The C runtime stack is located at $1DFF and growing downwards.</P>
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<DT><B>Heap</B><DD><P>The C heap is located at the end of the program and grows towards the C
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runtime stack.</P>
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</DL>
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</P>
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<HR>
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