153 lines
6.2 KiB
HTML
153 lines
6.2 KiB
HTML
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<HTML>
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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:active {color: yellow }
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</STYLE>
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</HEAD>
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<TITLE>Magic-7.3 Command Reference</TITLE>
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<BODY BACKGROUND=graphics/blpaper.gif>
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<H1> <IMG SRC=graphics/magic_title2.gif ALT="Magic VLSI Layout Tool Version 7.3">
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<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
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<H2>select</H2>
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<HR>
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Select or unselect portions of the layout according to the options, or
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create a new cell definition from a selection.
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<HR>
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<H3>Shortcuts:</H3>
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<BLOCKQUOTE>
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Key macro <B>,</B> (comma) implements the command <B>select clear</B>. <BR>
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Key macro <B>s</B> implements the command <B>select</B>. <BR>
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Key macro <B>S</B> implements the command <B>select more</B>. <BR>
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Key macro <I>Control-</I><B>S</B> implements the
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command <B>select less</B>. <BR>
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Key macro <B>a</B> implements the command <B>select visible</B>. <BR>
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Key macro <B>A</B> implements the command <B>select more visible</B>. <BR>
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Key macro <I>Control-</I><B>A</B> implements the
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command <B>select less visible</B>. <BR>
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Key macro <B>i</B> implements the command <B>select cell</B>. <BR>
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Key macro <B>I</B> implements the command <B>select more cell</B>. <BR>
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Key macro <I>Control-</I><B>I</B> implements the
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command <B>select less cell</B>.
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</BLOCKQUOTE>
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<H3>Usage:</H3>
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<BLOCKQUOTE>
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<B>select</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>more</B> | <B>less</B>] [<I>layers</I>]
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<DD> [De]select material under cursor, or
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[de]select a subcell if the cursor is over space.
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<DT> <B>nocycle</B> [<I>layers</I>]
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<DD> Select material without cycling through different tile
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types when "select" is called from the same cursor position
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more than once.
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<DT> [<B>more</B> | <B>less</B>] <B>area</B> [<I>layers</I>]
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<DD> [De]select all material under box in layers <I>layers</I>
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<DT> [<B>more</B> | <B>less</B>] <B>visible</B> [<I>layers</I>]
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<DD> [De]select all visible material under box in layers <I>layers</I>.
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<DT> [<B>more</B> | <B>less</B>] <B>box</B> [<I>layers</I>]
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<DD> [De]select material specified by the boundary of the cursor box
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<DT> [<B>more</B> | <B>less</B>] <B>chunk</B> [<I>layers</I>]
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<DD> [De]select a network chunk (largest rectangle) specified by
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the lower left corner of the cursor box
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<DT> [<B>more</B> | <B>less</B>] <B>region</B> [<I>layers</I>]
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<DD> [De]select a network region specified by
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the lower left corner of the cursor box
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<DT> [<B>more</B> | <B>less</B>] <B>net</B> [<I>layers</I>]
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<DD> [De]select an entire electrical network specified by
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the lower left corner of the cursor box
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<DT> [<B>more</B> | <B>less</B>] <B>cell</B> [<I>name</I>]
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<DD> [De]select the cell under cursor, or the cell use (instance)
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named <I>name</I>.
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<DT> <B>top cell</B>
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<DD> Select the topmost cell in the window, which does not have
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an instance name and therefore cannot be selected with the
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<B>select cell</B> command.
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<DT> <B>save</B> <I>cell</I>
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<DD> Save selection as cell named <I>cell</I>, which is also
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saved to disk as <I>cell</I><TT>.mag</TT>.
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<DT> <B>clear</B>
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<DD> Clear selection
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<DT> <B>pick</B>
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<DD> Remove the selection from the layout, but retain the
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selection buffer for interactive processing.
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<DT> <B>keep</B>
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<DD> Copy the selection from the layout into the selection
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buffer, and keep the selection buffer for interactive
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processing.
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<DT> <B>move</B> <I>x y</I>
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<DD> Move the selection buffer to position <I>x y</I>,
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relative to the cell definition origin.
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<DT> <B>help</B>
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<DD> Print help information
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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>select</B> command changes what material is in the current
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selection. <B>magic</B> maintains a separate cell definition
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that represents the current selection. Without the options
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<B>more</B> or <B>less</B>, the selection is cleared prior to
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executing the new selection command. Otherwise, <B>more</B>
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adds to the existing selection and <B>less</B> subtracts from
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it. <P>
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Network selection differs from other types of selection in
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that <B>magic</B> uses a sophisticated algorithm to determine
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what is electrically connected together throughout the layout.
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A <B>chunk</B> is the largest rectangle containing a single
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layer type. A <B>region</B> is the largest network area
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containing a single layer type. The region stops where the
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net connects to a different layer type. The <B>net</B> is
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the entire electrical network. <P>
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The <B>select save</B> options differs from the rest in that it
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does not alter the current selection, but creates a new cell
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definition from the current selection. Note that this cell
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is created as a top-level cell, and does not replace the current
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selection as a use in the edit cell. To do that requires
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"<B>select save</B> <I>cell</I>" followed by "<B>delete</B>"
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and "<B>getcell child 0 0 parent 0 0</B>". The last command
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syntax is used because the bounds of the selection may differ
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from the cursor box.
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</BLOCKQUOTE>
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<H3>Implementation Notes:</H3>
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<BLOCKQUOTE>
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<B>select</B> is implemented as a built-in command in <B>magic</B>.
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The <B>select keep</B>, <B>select move</B>, and <B>select pick</B>
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are interactive functions used by the "pick" tool.
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</BLOCKQUOTE>
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<H3>Bugs:</H3>
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<BLOCKQUOTE>
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To be consistent, <B>select save</B> should be a separate command,
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since like other commands it operates on the selection rather than
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alter what is in the selection.
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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> December 4, 2005 at 5:06pm <P>
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</BODY>
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</HTML>
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