70 lines
2.2 KiB
TeX
70 lines
2.2 KiB
TeX
\subsubsection{Description}
|
|
|
|
Most common boolean operators can be instantiated without the \verb-Inst- constructor.
|
|
|
|
\subsubsection{List}
|
|
|
|
Boolean operators are listed below :
|
|
\begin{itemize}
|
|
\item \verb-And2- : \verb-q <= i0 & i1-
|
|
\item \verb-Or2- : \verb-q <= i0 | i1-
|
|
\item \verb-Xor2- : \verb-q <= i0 ^ i1-
|
|
\item \verb-Inv- : \verb-q <= ~i0-
|
|
\end{itemize}
|
|
|
|
|
|
\subsubsection{Generators to instantiate}
|
|
|
|
One can choose the generator to be used. Some methods are applied to the cell and set the generator used when using \verb-&-, \verb-|-, \verb-^- and \verb-~-. The generators used by default are the ones from the virtual library.\\
|
|
|
|
\indent Methods are :
|
|
\begin{itemize}
|
|
\item \verb-SetAnd-
|
|
\item \verb-SetOr-
|
|
\item \verb-SetXor-
|
|
\item \verb-SetNot-
|
|
\end{itemize}
|
|
|
|
\subsubsection{Example}
|
|
|
|
\begin{verbatim}
|
|
class essai ( Model ) :
|
|
|
|
def Interface ( self ) :
|
|
self.A = SignalIn ( "a", 4 )
|
|
self.B = SignalIn ( "b", 4 )
|
|
self.B = SignalIn ( "c", 4 )
|
|
|
|
self.S = SignalOut ( "s", 4 )
|
|
|
|
self.vdd = VddIn ( "vdd" )
|
|
self.vss = VssIn ( "vss" )
|
|
|
|
def Netlist ( self ) :
|
|
|
|
self.S <= ( ~self.A & self.B ) | self.C
|
|
\end{verbatim}
|
|
|
|
\subsubsection{Errors}
|
|
|
|
Some errors may occur :
|
|
\begin{itemize}
|
|
\item \verb-[Stratus ERROR] & : the nets must have the same lenght.-\\When one uses boolean expressions, one has to check that the sizes of both nets are equivalent.
|
|
\item \verb-[Stratus ERROR] : there is no alim.-\\The cell being created does not have the alimentation nets. The instanciation is impossible.
|
|
\end{itemize}
|
|
|
|
\begin{htmlonly}
|
|
|
|
\subsubsection{See Also}
|
|
|
|
\hyperref[ref]{\emph{Introduction}}{}{Introduction}{secintroduction}
|
|
\hyperref[ref]{\emph{Netlist}}{}{Netlist}{secnetlist}
|
|
\hyperref[ref]{\emph{Instanciation of a multiplexor}}{}{Multiplexor}{secmux}
|
|
\hyperref[ref]{\emph{Instanciation of a shifter}}{}{Shifter}{secshift}
|
|
\hyperref[ref]{\emph{Instanciation of a register}}{}{Reg}{secreg}
|
|
\hyperref[ref]{\emph{Instanciation of constants}}{}{Constant}{secconstant}
|
|
\hyperref[ref]{\emph{Arithmetical operations}}{}{Arithmetic}{secarithmetic}
|
|
\hyperref[ref]{\emph{Comparison operations}}{}{Comparison}{seccomp}
|
|
|
|
\end{htmlonly}
|