164 lines
7.1 KiB
HTML
164 lines
7.1 KiB
HTML
<HTML>
|
|
<HEAD>
|
|
<STYLE type="text/css">
|
|
H1 {color: black }
|
|
H2 {color: maroon }
|
|
H3 {color: #007090 }
|
|
A.head:link {color: #0060a0 }
|
|
A.head:visited {color: #3040c0 }
|
|
A.head:active {color: white }
|
|
A.head:hover {color: yellow }
|
|
A.red:link {color: red }
|
|
A.red:visited {color: maroon }
|
|
A.red:active {color: yellow }
|
|
</STYLE>
|
|
</HEAD>
|
|
<TITLE>Magic-7.3 Command Reference</TITLE>
|
|
<BODY BACKGROUND=graphics/blpaper.gif>
|
|
<H1> <IMG SRC=graphics/magic_title2.gif ALT="Magic VLSI Layout Tool Version 7.3">
|
|
<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
|
|
|
|
<H2>plot</H2>
|
|
<HR>
|
|
Hardcopy plotting
|
|
<HR>
|
|
|
|
<H3>Usage:</H3>
|
|
<BLOCKQUOTE>
|
|
<B>plot</B> <I>option</I> <BR><BR>
|
|
<BLOCKQUOTE>
|
|
where <I>option</I> may be one of the following:
|
|
<DL>
|
|
<DT> <B>postscript</B> <I>file</I> [<I>layers</I>]
|
|
<DD> Generate a PostScript file of layout underneath the box.
|
|
<DT> <B>pnm</B> <I>file</I> [<I>scale</I> [<I>layers</I>]]
|
|
<DD> Generate a <TT>.pnm</TT> ("portable anymap") file of
|
|
layout underneath the box. The output size is propotional
|
|
to <I>scale</I>, where a scale of 1 is one output pixel per
|
|
<B>magic</B> internal unit. The default <I>scale</I>
|
|
value, if unspecified, is 0.5.
|
|
<DT> <B>parameters</B> [<I>name value</I>]
|
|
<DD> Set or print out plotting parameters (see Summary below).
|
|
<DT> <B>help</B>
|
|
<DD> Print help information
|
|
</DL>
|
|
</BLOCKQUOTE>
|
|
</BLOCKQUOTE>
|
|
|
|
<H3>Summary:</H3>
|
|
<BLOCKQUOTE>
|
|
The <B>plot</B> command generates hardcopy plots of a layout.
|
|
The use of <B>plot</B> for any particular output format requires
|
|
that the parameters of the format be defined in the <B>plot</B>
|
|
section of the technology file. However, from magic-7.3.56, the
|
|
PNM handler will create a default set of output styles from the
|
|
existing layout styles for the technology. This makes <B>plot
|
|
pnm</B> compatible with <I>all</I> technology files, regardless
|
|
of whether or not a section exists for "<B>style pnm</B>". <P>
|
|
|
|
Each <B>plot</B> format has its own set of parameters, but all
|
|
parameters are controlled with the <B>plot parameters</B> option.
|
|
Valid parameters and their defaults are as follows:
|
|
<BLOCKQUOTE>
|
|
General parameters:
|
|
<TABLE BORDER=0>
|
|
<TR> <TD> <I>parameter name</I> </TD><TD> <I>default value</I> </TD> </TR>
|
|
<TR> <TD> <B>showCellNames</B> </TD><TD> <B>true</B> </TD> </TR>
|
|
</TABLE>
|
|
PostScript parameters:
|
|
<TABLE BORDER=0>
|
|
<TR> <TD> <I>parameter name</I> </TD><TD> <I>default value</I> </TD>
|
|
<TD> <I>explanation</I> </TD> </TR>
|
|
<TR> <TD> <B>PS_cellIdFont</B> </TD><TD> <B>/Helvetica</B> </TD>
|
|
<TD> Font used for writing cell use IDs</TD></TR>
|
|
<TR> <TD> <B>PS_cellNameFont</B> </TD><TD> <B>/HelveticaBold</B> </TD>
|
|
<TD> Font used for writing cell definition names</TD></TR>
|
|
<TR> <TD> <B>PS_labelFont</B> </TD><TD> <B>/Helvetica</B> </TD>
|
|
<TD> Font used for writing label text</TD></TR>
|
|
<TR> <TD> <B>PS_cellIdSize</B> </TD><TD> <B>8</B> </TD>
|
|
<TD> Font size for writing cell use IDs (in points)</TD></TR>
|
|
<TR> <TD> <B>PS_cellNameSize</B> </TD><TD> <B>12</B> </TD>
|
|
<TD> Font size for writing cell definition names (in points)</TD></TR>
|
|
<TR> <TD> <B>PS_labelSize</B> </TD><TD> <B>12</B> </TD>
|
|
<TD> Font size for writing label text (in points)</TD></TR>
|
|
<TR> <TD> <B>PS_boundary</B> </TD><TD> <B>true</B> </TD>
|
|
<TD> Whether to draw boundaries around layers in addition to
|
|
fill patterns</TD></TR>
|
|
<TR> <TD> <B>PS_width</B> </TD><TD> <B>612 (8.5in)</B> </TD>
|
|
<TD> Page width of the target output</TD></TR>
|
|
<TR> <TD> <B>PS_height</B> </TD><TD> <B>792 (11in)</B> </TD>
|
|
<TD> Page height of the target output</TD></TR>
|
|
<TR> <TD> <B>PS_margin</B> </TD><TD> <B>72 (1in)</B> </TD>
|
|
<TD> Minimum margin to allow on all sides of the output page</TD></TR>
|
|
</TABLE>
|
|
PNM parameters:
|
|
<TABLE BORDER=0>
|
|
<TR> <TD> <I>parameter name</I> </TD><TD> <I>default value</I> </TD>
|
|
<TD> <I>explanation</I> </TD> </TR>
|
|
<TR> <TD> <B>pnmmaxmem</B> </TD><TD> <B>65536</B> </TD>
|
|
<TD>Maximum memory (in KB) to use to generate output. Larger
|
|
values allow larger chunks of the layout to be processed
|
|
at a time. Normally, anything larger than the default
|
|
will just take a long time to render, so it's better
|
|
to leave it alone and let the <B>plot pnm</B> routine
|
|
downsample the image to fit in memory if the size
|
|
of the layout requires it.</TD> </TR>
|
|
<TR> <TD> <B>pnmbackground</B> </TD><TD> <B>255</B> </TD>
|
|
<TD>Value of the background, where 0=black and 255=white.
|
|
White is default to match the printed page, which is
|
|
where the plots usually end up. A value of 200 is
|
|
approximately the default background color in <B>magic</B>.
|
|
</TD> </TR>
|
|
<TR> <TD> <B>pnmdownsample</B> </TD><TD> <B>0</B> </TD>
|
|
<TD>Number of bits to downsample the original layout.
|
|
In the first pass, one pixel is generated for each
|
|
<I>n</I> magic internal units in each of x and y,
|
|
where <I>n</I> is the downsampling value.
|
|
Each downsampling bit therefore represents a factor
|
|
of 4 in decreased computation time.
|
|
Generally speaking, downsampling causes information to
|
|
be lost in the translation from layout to the PNM file.
|
|
However, if the grid has been scaled from the original
|
|
lambda, then downsampling up to the scale factor will
|
|
have no impact on the output other than speeding up
|
|
the rendering (because the minimum feature size is
|
|
still in lambda, so no feature will be overstepped by
|
|
the downsampling). For example, for a grid scaling
|
|
of 1:10 the proper downsampling would be 3 bits.
|
|
Note that layouts that are too large for the allocated
|
|
memory blocksize <B>pnmmaxmem</B> will force
|
|
downsampling regardless of the value of
|
|
<B>pnmdownsample</B>. </TD> </TR>
|
|
</TABLE>
|
|
</BLOCKQUOTE>
|
|
|
|
PostScript plotting is best suited for drawing small layouts with
|
|
relatively few components. PNM plotting is best suited for drawing
|
|
large layouts. For chip-size layouts, the PNM plots are virtually
|
|
identical to chip photographs. From magic version 7.3.56, plotting
|
|
PNM files requires no special entries in the technology file.
|
|
Although such entries can fine-tune the output, this is usually
|
|
not necessary. Also, since version 7.3.56, magic makes intelligent
|
|
decisions about memory usage, so it's generally not necessary to
|
|
change the PNM plot parameters.
|
|
</BLOCKQUOTE>
|
|
|
|
<H3>Implementation Notes:</H3>
|
|
<BLOCKQUOTE>
|
|
<B>plot</B> is implemented as a built-in command in <B>magic</B>. <P>
|
|
Original plot styles <B>versatec</B> and <B>gremlin</B> have been
|
|
removed, but shells of the code are retained so that magic doesn't
|
|
complain when encountering styles for these types in a technology
|
|
file.
|
|
</BLOCKQUOTE>
|
|
|
|
<P><IMG SRC=graphics/line1.gif><P>
|
|
<TABLE BORDER=0>
|
|
<TR>
|
|
<TD> <A HREF=commands.html>Return to command index</A>
|
|
</TR>
|
|
</TABLE>
|
|
<P><I>Last updated:</I> December 4, 2005 at 3:24pm <P>
|
|
</BODY>
|
|
</HTML>
|