\begin{itemize}
    \item \textbf{Name} : DpgenNor4 -- Nor4 Macro-Generator
    \item \textbf{Synopsys} :
\begin{verbatim}
Generate ( 'DpgenNor4', modelname
         , param = { 'nbit'       : n
                   , 'drive'      : d 
                   , 'physical'   : True
                   , 'behavioral' : True                   
                   }
         )
\end{verbatim}
    \item \textbf{Description} : Generates a \verb-n- bits four inputs NOR with an output power of \verb-d- named \verb-modelname-.
    \item \textbf{Terminal Names} :
    \begin{itemize}
        \item \textbf{i0} : input (\verb-n- bits)
        \item \textbf{i1} : input (\verb-n- bits)
        \item \textbf{i2} : input (\verb-n- bits)
        \item \textbf{i3} : 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{drive} (optional) : Defines the output power of the gates
        \begin{itemize}
            \item Valid drive are : 1 or 4
            \item If this parameter is not defined, it's value is the smallest one permitted
        \end{itemize}
        \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}
nq <= not ( i0 or i1 or i2 or i3 )
\end{verbatim}
    \item \textbf{Example} :
\begin{verbatim}
from stratus import *

class inst_nor4 ( Model ) :

  def Interface ( self ) :
    self.in1 = SignalIn  ( "in1", 15 )
    self.in2 = SignalIn  ( "in2", 15 )
    self.in3 = SignalIn  ( "in3", 15 )
    self.in4 = SignalIn  ( "in4", 15 )
    self.out = SignalOut (   "o", 15 )

    self.vdd = VddIn ( "vdd" )
    self.vss = VssIn ( "vss" )
    
  def Netlist ( self ) :
    Generate ( 'DpgenNor4', 'nor4_15'
             , param = { 'nbit'     : 15
                       , 'physical' : True
                       }
             )
    self.I = Inst ( 'nor4_15', 'inst'
                  , map = { 'i0'  : self.in1
                          , 'i1'  : self.in2
                          , 'i2'  : self.in3
                          , 'i3'  : self.in4
                          , 'nq'  : self.out
                          , 'vdd' : self.vdd
                          , 'vss' : self.vss
                          }
                  )
      
    
  def Layout ( self ) :
    Place ( self.I, NOSYM, Ref(0, 0) )
\end{verbatim}
\end{itemize}
