\section{Emulation}

\begin{frame}
   {Emulators}
   \begin{figure}[H]
      \includegraphics[height=3.3in]{IMAGES/virt-emu}
      \caption{Emulators}
   \end{figure}
\end{frame}

\cprotect\note{

   The first implementations of virtualization on the PC
   architecture were through the use of
   \textbf{Emulators}. An application running on the current
   operating system would appear to another OS as a specific
   hardware environment. Emulators generally do not require
   special hardware to operate.

   \textbf{Qemu} is one such emulator.

}

\begin{frame}
   {Emulation vs Virtualization}

   \begin{itemize}
      \item
      An \textbf{Emulator} runs completely in software
      \item
      Hardware constructs are replaced by software
      \item
      Useful for running virtual machines on different
      architectures: e.g., running a pretend \textbf{ARM}
      guest machine on an \textbf{x86} host
      \item
      Often used for developing operating system for a new CPU
      even before hardware is available.
      \item
      Performance is relatively slow
   \end{itemize}

\end{frame}

\cprotect\note{
}

