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<H1>Linux I/O port programming mini-HOWTO</H1>
<H2>Author: Riku Saikkonen <CODE>&lt;Riku.Saikkonen@hut.fi&gt;</CODE></H2>v3.0, 2000-12-13
<P><HR>
<EM>This HOWTO document describes programming hardware I/O ports and
waiting for small periods of time in user-mode Linux programs running
on the Intel x86 architecture.</EM>
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<P>
<H2><A NAME="toc1">1.</A> <A HREF="IO-Port-Programming-1.html">Introduction </A></H2>
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<H2><A NAME="toc2">2.</A> <A HREF="IO-Port-Programming-2.html">Using I/O ports in C programs</A></H2>
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<LI><A HREF="IO-Port-Programming-2.html#ss2.1">2.1 The normal method</A>
<LI><A HREF="IO-Port-Programming-2.html#ss2.2">2.2 An alternate method: <CODE>/dev/port</CODE></A>
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<H2><A NAME="toc3">3.</A> <A HREF="IO-Port-Programming-3.html">Interrupts (IRQs) and DMA access</A></H2>
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<H2><A NAME="toc4">4.</A> <A HREF="IO-Port-Programming-4.html">High-resolution timing</A></H2>
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<LI><A HREF="IO-Port-Programming-4.html#ss4.1">4.1 Delays</A>
<LI><A HREF="IO-Port-Programming-4.html#ss4.2">4.2 Measuring time</A>
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<H2><A NAME="toc5">5.</A> <A HREF="IO-Port-Programming-5.html">Other programming languages</A></H2>
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<H2><A NAME="toc6">6.</A> <A HREF="IO-Port-Programming-6.html">Some useful ports</A></H2>
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<LI><A HREF="IO-Port-Programming-6.html#ss6.1">6.1 The parallel port</A>
<LI><A HREF="IO-Port-Programming-6.html#ss6.2">6.2 The game (joystick) port</A>
<LI><A HREF="IO-Port-Programming-6.html#ss6.3">6.3 The serial port</A>
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<H2><A NAME="toc7">7.</A> <A HREF="IO-Port-Programming-7.html">Hints</A></H2>
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<H2><A NAME="toc8">8.</A> <A HREF="IO-Port-Programming-8.html">Troubleshooting</A></H2>
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<H2><A NAME="toc9">9.</A> <A HREF="IO-Port-Programming-9.html">Example code</A></H2>
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<H2><A NAME="toc10">10.</A> <A HREF="IO-Port-Programming-10.html">Credits</A></H2>
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