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<TITLE>Magic-7.3 Command Reference</TITLE>
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<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>irsim</H2>
<HR>
Invoke the <B>irsim</B> switch-level digital simulator.
<HR>
<H3>Usage:</H3>
<BLOCKQUOTE>
<B>irsim</B> [<I>args</I>] <BR><BR>
<BLOCKQUOTE>
where <I>args</I> are any arguments to be passed to the <B>irsim</B>
program as they would from the command line. See the <B>irsim</B>
documentation for an explanation of its valid command-line
arguments.
</BLOCKQUOTE>
</BLOCKQUOTE>
<H3>Summary:</H3>
<BLOCKQUOTE>
The <B>irsim</B> command starts the <B>irsim</B> simulator. While
previous versions of magic did this by forking the <B>irsim</B>
process, Tcl-based <B>magic</B> can load the Tcl-based <B>irsim</B>
as a package directly into the interpreter. Commands for <B>irsim</B>
are added to the Tcl namespace and are available directly from the the
<B>magic</B> command line. <P>
As a Tcl script, the <B>irsim</B> command attempts to set up the
simulation arguments to ensure proper startup. It also checks for
a valid <TT>.sim</TT> file matching the layout, and generates one
if it does not already exist. <P>
A number of commands are available for viewing signal values directly
on the layout. For a complete description of these commands and
the Tcl-based <B>irsim</B> simulation environment, see the documentation
on <B>irsim</B>. <P>
</BLOCKQUOTE>
<H3>Implementation Notes:</H3>
<BLOCKQUOTE>
<B>irsim</B> is implemented as a Tcl procedure that loads the Tcl-package
based version of <B>irsim</B>, then executes its startup procedure. The
<B>irsim</B> Tcl package itself is compiled and installed separately
from <B>magic</B>.
</BLOCKQUOTE>
<H3>See Also:</H3>
<BLOCKQUOTE>
<A HREF=ext2sim.html><B>ext2sim</B></A> <BR>
</BLOCKQUOTE>
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<TABLE BORDER=0>
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<TD> <A HREF=commands.html>Return to command index</A>
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<P><I>Last updated:</I> October 7, 2004 at 1:01am <P>
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