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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><HTML><HEAD> <META NAME="GENERATOR" CONTENT="LinuxDoc-Tools 0.9.20"> <TITLE>Commodore 64 specific information for cc65: Memory layout</TITLE> <LINK HREF="c64-4.html" REL=next> <LINK HREF="c64-2.html" REL=previous> <LINK HREF="c64.html#toc3" REL=contents></HEAD><BODY><A HREF="c64-4.html">Next</A><A HREF="c64-2.html">Previous</A><A HREF="c64.html#toc3">Contents</A><HR><H2><A NAME="s3">3.</A> <A HREF="c64.html#toc3">Memory layout</A></H2><P>cc65 generated programs with the default setup run with the I/O area and thekernal ROM enabled (memory under the kernal may be used for graphics or asextended memory - see the sections about graphics and extended memorydrivers). The BASIC ROM is disabled, which gives a usable memory range of$0800 - $CFFF. This means that kernal entry points may be calleddirectly, but using the BASIC ROM is not possible without additional code.</P><P>Special locations:</P><P><DL><DT><B>Text screen</B><DD><P>The text screen is located at $400 (as in the standard setup).</P><DT><B>Stack</B><DD><P>The C runtime stack is located at $CFFF and growing downwards.</P><DT><B>Heap</B><DD><P>The C heap is located at the end of the program and grows towards the Cruntime stack.</P></DL></P><HR><A HREF="c64-4.html">Next</A><A HREF="c64-2.html">Previous</A><A HREF="c64.html#toc3">Contents</A></BODY></HTML>⌨️ 快捷键说明
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