158 lines
6.4 KiB
HTML
158 lines
6.4 KiB
HTML
<HTML>
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<H3>See Also:</H3>
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<BLOCKQUOTE>
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<A HREF=wire.html><I>wire</I></A> <BR>
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</BLOCKQUOTE>
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<HEAD>
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<STYLE type="text/css">
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H1 {color: black }
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H2 {color: maroon }
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H3 {color: #007090 }
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A.head:link {color: #0060a0 }
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A.head:visited {color: #3040c0 }
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A.head:active {color: white }
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A.head:hover {color: yellow }
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A.red:link {color: red }
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A.red:visited {color: maroon }
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A.red:active {color: yellow }
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</STYLE>
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</HEAD>
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<TITLE>Magic-8.3 Command Reference</TITLE>
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<BODY BACKGROUND=graphics/blpaper.gif>
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<H1> <IMG SRC=graphics/magic_title8_3.png ALT="Magic VLSI Layout Tool Version 8.3">
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<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
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<H2>wire</H2>
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<HR>
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Generate wires from the command line.
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<HR>
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<H3>Shortcuts:</H3>
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<BLOCKQUOTE>
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Mouse buttons in conjunction with the <B>wire</B> tool implement
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various <B>wire</B> commands (see the <B>tool</B> command
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reference).
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</BLOCKQUOTE>
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<H3>Usage:</H3>
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<BLOCKQUOTE>
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<B>wire</B> <I>option</I> <BR><BR>
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<BLOCKQUOTE>
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where <I>option</I> may be one of the following:
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<DL>
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<DT> <B>help</B>
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<DD> Print help information
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<DT> <B>horizontal</B> [<B>to</B> <I>x y</I>]
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<DD> Add a new horizontal wire leg. If coordinates are specified, the
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wire is drawn between the current last position and the indicated
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coordinate ("y" value ignored). If a coordinate is not specified,
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the wire is drawn from the current last position to the "x"
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position of the cursor.
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<DT> <B>leg</B> [<B>to</B> <I>x y</I>]
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<DD> Add a new horizontal or vertical leg. This behaves like
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<B>wire horizontal</B> or <B>wire vertical</B>, but chooses
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the orientation depending on which orientation ends closer to
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the cursor position or to the indicated coordinate.
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<DT> <B>switch</B> [<I>layer width</I>]
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<DD> Place contact and switch layers
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<DT> <B>type</B> [<I>layer width</I>]
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<DD> Select the type and size of wires. If the layer and width are not
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given, the the layer and width are chosen from the material that is
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found under the location of the cursor, with the width determined by
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the largest square that will fit completely inside the material at
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that point.
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<DT> <B>type at</B> <I>x y</I>]
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<DD> Select the type and size of wire, determining the wire type and
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size from the material found at the given coordinate.
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<DT> <B>vertical</B> [<B>to</B> <I>x y</I>]
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<DD> Add a new vertical wire leg. If coordinates are specified, the
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wire is drawn between the current last position and the indicated
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coordinate ("x" value ignored). If a coordinate is not specified,
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the wire is drawn from the current last position to the "y"
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position of the cursor.
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<DT> <B>segment</B> <I>layer width x1 y1 x2 y2</I>... [<B>-noendcap</B>]
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<DD> Paint one or more wire segments
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<DT> <B>segment</B> <I>layer width filename</I> [<B>-noendcap</B>]
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<DD> Paint one or more wire segments taken from the text file
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<I>filename</I> containing two coordinates X and Y per line,
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one line per path point.
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<DT> <B>show</B>
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<DD> Determine where the next wire leg will be according to
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the rules for <B>wire leg</B>, but place the result in
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the selection buffer rather than directly on the layout.
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<DT> <B>increment layer</B>
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<DD> Change the layer type used for wires to the wire type on
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the plane above the plane of the current wire type.
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<DT> <B>decrement layer</B>
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<DD> Change the layer type used for wires to the wire type on
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the plane below the plane of the current wire type.
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<DT> <B>increment width</B>
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<DD> Increment the width of the current wire by 1 internal unit.
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<DT> <B>decrement width</B>
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<DD> Decrement the width of the current wire by 1 internal unit.
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</DL>
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</BLOCKQUOTE>
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</BLOCKQUOTE>
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<H3>Summary:</H3>
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<BLOCKQUOTE>
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The <B>wire</B> command allows quick generation of wires on the
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layout. Some of these commands are bound to mouse button events
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in the wire tool, making a convenient interface for fast wiring
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where full netlist routing is not required. Due to the presence
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of the wire tool, most of these commands are not typically called
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from the command line. <P>
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The <B>wire segment</B> command can generate non-Manhattan segments.
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All other wiring commands generate only Manhattan routes. This
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command places wire segments in relation to the <I>centerline</I>
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coordinates specified by <I>x1 y1</I>, <I>x2 y2</I>, and so forth.
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By default, wires are drawn with an endcap extension of one-half
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the wire width. The <B>-noendcap</B> option causes the wire to
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end at the coordinate, with no extension. The <B>wire segment</B>
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command is intended to be used from Tcl scripts for automatic
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layout generation. <P>
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The first format for <B>wire segment</B> has coordinates specified
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on the command line. For wire segments with too many points, this
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command may overrun the internal limit on either number of command-line
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arguments or the total number of characters in the command line. To
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work around these limits, the second format of the command specifies
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a filename in place of the coordinate list. The file is a simple
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text file, with one line per coordinate pair. X and Y values must be
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separated by whitespace. The syntax for each value is the same as for
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the command; e.g., one can use integers which will be interpreted
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relative to the current snap setting, or one can specify the units,
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such as "100um". <P>
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When generating path points from a script, the most convenient method
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is to create an empty list ("{}"), then use "lappend" to add coordinates
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to the list. Once the list is complete, it is necessary to use "eval"
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to decompose the list.
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<BLOCKQUOTE>
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Incorrect: <B>wire segment m1 50 $pointlist</B> <BR>
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Correct: <B>eval "wire segment m1 50 $pointlist"</B>
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</BLOCKQUOTE>
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</BLOCKQUOTE>
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<H3>Implementation Notes:</H3>
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<BLOCKQUOTE>
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<B>wire</B> is implemented as a built-in command in <B>magic</B>.
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</BLOCKQUOTE>
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<H3>See Also:</H3>
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<BLOCKQUOTE>
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<A HREF=polygon.html><B>polygon</B></A> <BR>
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</BLOCKQUOTE>
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<P><IMG SRC=graphics/line1.gif><P>
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<TABLE BORDER=0>
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<TR>
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<TD> <A HREF=commands.html>Return to command index</A>
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</TR>
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</TABLE>
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<P><I>Last updated:</I> March 7, 2020 at 1:06pm <P>
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</BODY>
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</HTML>
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