57 lines
1.9 KiB
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57 lines
1.9 KiB
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<TITLE>cc65 function reference: Alphabetical function reference: peekwsys</TITLE>
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<HR>
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<H2><A NAME="peekwsys"></A> 3.117 <A HREF="funcref.html#toc3.117">peekwsys</A></H2>
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<P>
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<BLOCKQUOTE>
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<DL>
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<DT><B>Function</B><DD><P>Read one word from a location in the system bank.</P>
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<DT><B>Header</B><DD><P><CODE>
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<A HREF="funcref-13.html#cbm610.h">cbm610.h</A></CODE>,
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<CODE>
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<A HREF="funcref-12.html#cbm510.h">cbm510.h</A></CODE></P>
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<DT><B>Declaration</B><DD><P><CODE>unsigned __fastcall__ peekwsys (unsigned addr);</CODE></P>
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<DT><B>Description</B><DD><P><CODE>peekwsys</CODE> reads one word from the given address in the
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system bank (bank 15) of the CBM PET-II machines and returns it. Following
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the usual 6502 conventions, the low byte is read from <CODE>addr</CODE>, and the
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high byte is read from <CODE>addr+1</CODE>.</P>
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<DT><B>Limits</B><DD><P>
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<UL>
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<LI>The function is only available as fastcall function, so it may only
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be used in presence of a prototype.</LI>
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<LI>The order in which the two bytes are read is undefined.</LI>
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</UL>
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</P>
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<DT><B>Availability</B><DD><P>cc65</P>
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<DT><B>See also</B><DD><P>
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<A HREF="funcref-57.html#PEEK">PEEK</A>,
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<A HREF="funcref-58.html#PEEKW">PEEKW</A>,
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<A HREF="funcref-161.html#peekbsys">peekbsys</A>,
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<A HREF="funcref-164.html#pokebsys">pokebsys</A>,
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<A HREF="funcref-165.html#pokewsys">pokewsys</A></P>
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<DT><B>Example</B><DD><P>None.</P>
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</DL>
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