\begin{itemize}
    \item \textbf{Name} : DpgenNbuse -- Tristate Macro-Generator
    \item \textbf{Synopsys} :
\begin{verbatim}
Generate ( 'DpgenNbuse', modelname
         , param = { 'nbit'       : n
                   , 'physical'   : true
                   , 'behavioral' : true         
                   }
         )
\end{verbatim}
    \item \textbf{Description} : Generates a \verb-n- bits tristate with an complemented output named \verb-modelname-.
    \item \textbf{Terminal Names} :
    \begin{itemize}
        \item \textbf{cmd} : select ( 1 bit )
        \item \textbf{i0} : input ( \verb-n- bits )
        \item \textbf{nq} : output ( \verb-n- bits )
        \item \textbf{vdd} : power
        \item \textbf{vss} : ground
    \end{itemize}
    \item \textbf{Parameters} : Parameters are given in the map \verb-param-.
    \begin{itemize}
        \item \textbf{nbit} (mandatory) : Defines the size of the generator
        \item \textbf{physical} (optional, default value : False) : In order to generate a layout
        \item \textbf{behavioral} (optional, default value : False) : In order to generate a behavior        
    \end{itemize}
    \item \textbf{Behavior} :
\begin{verbatim}
nts:BLOCK(cmd = '1') BEGIN
    nq <= GUARDED not(i0);
END
\end{verbatim}
    \item \textbf{Example} :
\begin{verbatim}
from stratus import *

class inst_nbuse ( Model ) :

  def Interface ( self ) :
    self.i   = SignalIn  (   "i", 29 )
    self.cmd = SignalIn  ( "cmd", 1  )
    self.o   = SignalOut (   "o", 29 )

    self.vdd = VddIn ( "vdd" )
    self.vss = VssIn ( "vss" )
    
  def Netlist ( self ) :
    Generate ( 'DpgenNbuse', 'nbuse29'
             , param = { 'nbit'     : 29
                       , 'physical' : True
                       }
             )
    self.I = Inst ( 'nbuse29', 'inst'
                  , map = { 'i0'  : self.i
                          , 'cmd' : self.cmd
                          , 'nq'  : self.o
                          , 'vdd' : self.vdd
                          , 'vss' : self.vss
                          }
                  )
    
  def Layout ( self ) :
    Place ( self.I, NOSYM, Ref(0, 0) )
\end{verbatim}
\end{itemize}
