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StreamDevice/doc/mbbiDirect.html
2014-05-02 15:07:06 +00:00

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<title>StreamDevice: mbbiDirect Records</title>
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<meta name="author" content="Dirk Zimoch">
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<h1>mbbiDirect Records</h1>
<h2>Normal Operation</h2>
<p>
Depending on the format type, different record fields are used
for output and input. The variable <code><i>x</i></code> stands for the
written or read value.
</p>
<dl>
<dt>DOUBLE format (e.g. <code>%f</code>):</dt>
<dd>
Not allowed.
</dd>
<dt>LONG format (e.g. <code>%i</code>):</dt>
<dd>
<dl>
<dt>If <code>MASK==0</code> (because <code>NOBT</code> is not set):</dt>
<dd>
<u>Output:</u> <code><i>x</i>=VAL</code><br>
<u>Input:</u> <code>VAL=<i>x</i></code><br>
</dd>
<dt>If <code>MASK!=0</code>:</dt>
<dd>
<u>Output:</u> <code><i>x</i>=RVAL&amp;MASK</code><br>
<u>Input:</u> <code>RVAL=<i>x</i>&amp;MASK</code><br>
</dd>
</dl>
<code>MASK</code> is initialized to <code>NOBT</code> 1-bits shifted
left by <code>SHFT</code>.
</dd>
<dt>ENUM format (e.g. <code>%{</code>):</dt>
<dd>
Not allowed.
</dd>
<dt>STRING format (e.g. <code>%s</code>):</dt>
<dd>
Not allowed.
</dd>
</dl>
<h2>Initialization</h2>
<p>
During <a href="processing.html#init">initialization</a>, the <code>@init</code> handler is executed, if
present. All format converters work like in normal operation.
</p>
<hr>
<p>
<a href="aai.html">aai</a>
<a href="aao.html">aao</a>
<a href="ai.html">ai</a>
<a href="ao.html">ao</a>
<a href="bi.html">bi</a>
<a href="bo.html">bo</a>
<a href="mbbi.html">mbbi</a>
<a href="mbbo.html">mbbo</a>
<a href="mbboDirect.html">mbboDirect</a>
<a href="longin.html">longin</a>
<a href="longout.html">longout</a>
<a href="stringin.html">stringin</a>
<a href="stringout.html">stringout</a>
<a href="waveform.html">waveform</a>
<a href="calcout.html">calcout</a>
<a href="scalcout.html">calcout</a>
</p>
<p><small>Dirk Zimoch, 2005</small></p>
</body>
</html>