141 lines
4.0 KiB
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141 lines
4.0 KiB
HTML
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original version by: Nikos Drakos, CBLU, University of Leeds
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* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan
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* with significant contributions from:
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<H1><A NAME="SECTION000200000000000000000">
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DpgenBuse</A>
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</H1>
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<UL>
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<LI><SPAN CLASS="textbf">Name</SPAN> : DpgenBuse - Tristate Macro-Generator
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</LI>
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<LI><SPAN CLASS="textbf">Synopsys</SPAN> :
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<PRE>
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Generate ( 'DpgenBuse', modelname
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, param = { 'nbit' : n
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, 'physical' : True
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, 'behavioral' : True
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}
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)
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</PRE>
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</LI>
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<LI><SPAN CLASS="textbf">Description</SPAN> : Generates a <code>n</code> bits tristate named <code>modelname</code>.
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</LI>
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<LI><SPAN CLASS="textbf">Terminal Names</SPAN> :
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<UL>
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<LI><SPAN CLASS="textbf">cmd</SPAN> : select ( 1 bit )
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</LI>
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<LI><SPAN CLASS="textbf">i0</SPAN> : input ( <code>n</code> bits )
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</LI>
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<LI><SPAN CLASS="textbf">q</SPAN> : output ( <code>n</code> bits )
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</LI>
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<LI><SPAN CLASS="textbf">vdd</SPAN> : power
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</LI>
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<LI><SPAN CLASS="textbf">vss</SPAN> : ground
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</LI>
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</UL>
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</LI>
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<LI><SPAN CLASS="textbf">Parameters</SPAN> : Parameters are given in the map <code>param</code>.
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<UL>
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<LI><SPAN CLASS="textbf">nbit</SPAN> (mandatory) : Defines the size of the generator
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</LI>
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<LI><SPAN CLASS="textbf">physical</SPAN> (optional, default value : False) : In order to generate a layout
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</LI>
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<LI><SPAN CLASS="textbf">behavioral</SPAN> (optional, default value : False) : In order to generate a behavior
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</LI>
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</UL>
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</LI>
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<LI><SPAN CLASS="textbf">Behavior</SPAN> :
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<PRE>
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nts:BLOCK(cmd = '1') BEGIN
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q <= GUARDED i0;
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END
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</PRE>
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</LI>
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<LI><SPAN CLASS="textbf">Example</SPAN> :
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<PRE>
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from stratus import *
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class inst_buse ( Model ) :
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def Interface ( self ) :
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self.i = SignalIn ( "i", 8 )
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self.cmd = SignalIn ( "cmd", 1 )
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self.o = SignalOut ( "o", 8 )
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self.vdd = VddIn ( "vdd" )
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self.vss = VssIn ( "vss" )
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def Netlist ( self ) :
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Generate ( 'DpgenBuse', 'buse_8'
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, param = { 'nbit' : 8
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, 'physical' : True
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}
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)
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self.I = Inst ( 'buse_8', 'inst'
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, map = { 'i0' : self.i
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, 'cmd' : self.cmd
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, 'q' : self.o
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, 'vdd' : self.vdd
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, 'vss' : self.vss
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}
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)
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def Layout ( self ) :
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Place ( self.I, NOSYM, Ref(0, 0) )
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</PRE>
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</LI>
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</UL>
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<BR> <HR>
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<ADDRESS>
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Sophie B<small>ELLOEIL</small><br>20051116.1
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</ADDRESS>
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