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<html>
<head>
<title>EAGLE Help: BUS</title>
</head>
<body bgcolor=white>
<font face=Helvetica,Arial>
<hr>
<i>EAGLE Help</i>
<h1><center>BUS</center></h1>
<hr>
<dl>
<dt>
<b>Function</b>
<dd>
Draws buses in a schematic.
<p>
<dt>
<b>Syntax</b>
<dd>
<tt>BUS [bus_name] * [curve | @radius] *..</tt>
<p>
<dt>
<b>Mouse</b>
<dd>
Right button changes the wire bend (see <a href=86.htm>SET Wire_Bend</a>).
<p>
<dt>
<b>Keyboard</b>
<dd>
<tt>Shift</tt> reverses the direction of switching bend styles.<br>
<tt>Ctrl</tt> toggles between corresponding bend styles.
<p>
</dl>
<b>See also</b> <a href=63.htm>NET</a>,
<a href=62.htm>NAME</a>,
<a href=86.htm>SET</a>
<p>
The command BUS is used to draw bus connections onto the Bus layer
of a schematic diagram. Bus_name has the following form:
<pre>
SYNONYM:partbus,partbus,..
</pre>
where SYNONYM can be any name.
Partbus is either a simple net name or a bus name range of the following form:
<pre>
Name[LowestIndex..HighestIndex]
</pre>
where the following condition must be met:
<p>
0 <= LowestIndex <= HighestIndex <= 511
<p>
If a name is used with a range, that name must not end with digits, because
it would become unclear which digits belong to the Name and which belong to
the range.
<p>
If a bus wire is placed at a point where there is already another bus
wire, the current bus wire will be ended at that point.
This function can be disabled with "<tt>SET AUTO_END_NET OFF;</tt>",
or by unchecking "Options/Set/Misc/Auto end net and bus".
<p>
If the <i>curve</i> or <i>@radius</i> parameter is given, an arc can be drawn as part of the bus
(see the detailed description in the <a href=100.htm>WIRE</a> command).
<p>
<b>Bus name examples</b>
<pre>
A[0..15]
RESET
DB[0..7],A[3..4]
ATBUS:A[0..31],B[0..31],RESET,CLOCK,IOSEL[0..1]
</pre>
If no bus name is used, a name of the form B$1 is automatically allocated.
This name can be changed with the NAME command at any time.
<p>
The line width used by the bus can be defined for example with
<pre>
SET Bus_Wire_Width 40;
</pre>
to be 40 mil. (Default: 30 mil).
<hr>
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<i>Copyright © 2005 CadSoft Computer GmbH</i>
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