223cc6685e
git-svn-id: svn://svn.compuextreme.de/Viitor/V963/Viitor_cc65@5933 504e572c-2e33-0410-9681-be2bf7408885
73 lines
2.0 KiB
HTML
73 lines
2.0 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML>
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<HEAD>
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<META NAME="GENERATOR" CONTENT="LinuxDoc-Tools 0.9.20">
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<TITLE>Commodore Plus/4 specific information for cc65: Other hints</TITLE>
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<LINK HREF="plus4-8.html" REL=next>
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<LINK HREF="plus4-6.html" REL=previous>
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<LINK HREF="plus4.html#toc7" REL=contents>
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</HEAD>
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<BODY>
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<A HREF="plus4-8.html">Next</A>
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<A HREF="plus4-6.html">Previous</A>
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<A HREF="plus4.html#toc7">Contents</A>
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<HR>
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<H2><A NAME="s7">7.</A> <A HREF="plus4.html#toc7">Other hints</A></H2>
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<H2><A NAME="ss7.1">7.1</A> <A HREF="plus4.html#toc7.1">Passing arguments to the program</A>
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</H2>
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<P>Command line arguments can be passed to <CODE>main()</CODE>. Since this is not
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supported by BASIC, the following syntax was chosen:</P>
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<P>
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<BLOCKQUOTE><CODE>
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<PRE>
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RUN:REM ARG1 " ARG2 IS QUOTED" ARG3 "" ARG5
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</PRE>
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</CODE></BLOCKQUOTE>
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</P>
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<P>
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<OL>
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<LI>Arguments are separated by spaces.</LI>
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<LI>Arguments may be quoted.</LI>
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<LI>Leading and trailing spaces around an argument are ignored. Spaces within
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a quoted argument are allowed.</LI>
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<LI>The first argument passed to <CODE>main</CODE> is the program name.</LI>
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<LI>A maximum number of 10 arguments (including the program name) are
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supported.</LI>
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</OL>
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</P>
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<H2><A NAME="ss7.2">7.2</A> <A HREF="plus4.html#toc7.2">Program return code</A>
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</H2>
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<P>The program return code (low byte) is passed back to BASIC by use of the
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<CODE>ST</CODE> variable.</P>
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<H2><A NAME="ss7.3">7.3</A> <A HREF="plus4.html#toc7.3">Interrupts</A>
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</H2>
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<P>The runtime for the Plus/4 uses routines marked as <CODE>.CONDES</CODE> type 2 for
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interrupt handlers. Such routines must be written as simple machine language
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subroutines and will be called automatically by the interrupt handler code
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when they are linked into a program. See the discussion of the <CODE>.CONDES</CODE>
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feature in the
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<A HREF="ca65.html">assembler manual</A>.</P>
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<HR>
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<A HREF="plus4-8.html">Next</A>
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<A HREF="plus4-6.html">Previous</A>
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<A HREF="plus4.html#toc7">Contents</A>
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</BODY>
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</HTML>
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