X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=matthijs%2Fintroduction.lhs;h=039d265357f929f6b24b1afe12ac4d585b8d47d9;hb=e5b7438deb24871d58755733b301a692f99c0c55;hp=37a12cd05eb35f12882bd8cb2e3366e9719b0364;hpb=763ae6d1733a619ad6cf7252a94bdc5eb041f186;p=matthijs%2Fmaster-project%2Ffinal-presentation.git

diff --git a/matthijs/introduction.lhs b/matthijs/introduction.lhs
index 37a12cd..039d265 100644
--- a/matthijs/introduction.lhs
+++ b/matthijs/introduction.lhs
@@ -112,12 +112,94 @@
 
 \frame
 {
-  TODO: Impure (stateful) example.
+  \frametitle{Multiply-accumulate}
+  \begin{columns}
+    \begin{column}{4cm}
+        \begin{tabular}{lll}
+          Input A & Input B & Output \\
+          \hline
+          1 & 1 & 1 \\
+          1 & 2 & 3 \\
+          1 & 1 & 4 \\
+          2 & 2 & 8 \\
+        \end{tabular}
+    \end{column}
+    \begin{column}{6cm}
+      \begin{figure}
+        \includegraphics[width=7cm]{figures/archs/Mac}
+      \end{figure}
+    \end{column}
+  \end{columns}
 }
 
 \note[itemize]
 {
-  \item TODO
+  \item Next sheet: MAC circuit and I/O values
+  \item MAC is common circuit
+  \item Multiplies pairs, one pair at a time
+  \item Stores sum so far
+  \item Not pure!
+  \item Depends on inputs \emph{and} current register value
+  \item Solution: Put register value (state) in argument
+}
+
+\frame
+{
+  \frametitle{Multiply-accumulate}
+  \begin{columns}
+    \begin{column}{4cm}
+      \begin{block}{}
+        \vspace{-0.5cm}
+\begin{verbatim}
+mac (a, b) (State s) = let
+  sum = s + (a * b)
+in (State sum, sum)
+\end{verbatim}
+      \end{block}
+    \end{column}
+    \begin{column}{6cm}
+      \begin{figure}
+        \includegraphics[width=7cm]{figures/archs/MacExternal}
+      \end{figure}
+    \end{column}
+  \end{columns}
+}
+
+\note[itemize]
+{
+  \item Next sheet: MAC implementation
+  \item Current state as argument (annotated)
+  \item Two parts in the result: New state and output
+  \item Register is placed ``outside''
+  \item We want it inside!
+  \item Annotation allows compiler to put it inside
+}
+
+\begin{frame}[fragile]
+  \frametitle{Simulating}
+
+  \begin{block}{Recursive run function}
+    run f (i:is) s = let
+      (s', o) = f i s
+    in o : (run f is s')
+  \end{block}
+
+  \begin{block}{Remember \texttt{mac}}
+\vspace{-0.5cm}
+\begin{verbatim}
+mac (a, b) (State s) = let
+  sum = s + (a * b)
+in (State sum, sum)
+\end{verbatim}
+  \end{block}
+\end{frame}
+
+\note[itemize]
+{
+  \item Next sheet: run function
+  \item Used for simulation only
+  \item Recursion ``stores'' state
+  \item Each recursion step, \texttt{f} is evaluated once.
 }
 
 \subsection{\texorpdfstring{\clash{}}{CLasH}}
@@ -157,7 +239,8 @@
   \item Core: simpele functionale taal, niet minder expressief (vergelijk:
   taal zonder synoniemen)
   \item VHDL: Complexe HDL, gebruiken alleen netlist onderdelen.
-  \item Normalisatie: Nog simpeler maken.
+  \item Normalisatie: Nog simpeler maken (Polymorphisme, hogere orde eruit,
+  eenduidige vorm).
 }
 
 \subsection{Normalization}
@@ -304,8 +387,7 @@
 \subsection{Thanks}
 \frame
 {
-  {\Huge Thanks!}
-
+\vspace{2cm}\centerline{\Huge{Thanks!}}
 }
     
 % vim: set filetype=tex sw=2 sts=2 expandtab: