diff --git a/SavvyCAN.pro b/SavvyCAN.pro
index 1a4ba41..b02ce61 100644
--- a/SavvyCAN.pro
+++ b/SavvyCAN.pro
@@ -34,7 +34,8 @@ SOURCES += main.cpp\
     dbcsignaleditor.cpp \
     framefileio.cpp \
     filecomparatorwindow.cpp \
-    mainsettingsdialog.cpp
+    mainsettingsdialog.cpp \
+    discretestatewindow.cpp
 
 HEADERS  += mainwindow.h \
     can_structs.h \
@@ -57,7 +58,8 @@ HEADERS  += mainwindow.h \
     framefileio.h \
     config.h \
     filecomparatorwindow.h \
-    mainsettingsdialog.h
+    mainsettingsdialog.h \
+    discretestatewindow.h
 
 FORMS    += mainwindow.ui \
     graphingwindow.ui \
@@ -70,7 +72,8 @@ FORMS    += mainwindow.ui \
     dbcmaineditor.ui \
     dbcsignaleditor.ui \
     filecomparatorwindow.ui \
-    mainsettingsdialog.ui
+    mainsettingsdialog.ui \
+    discretestatewindow.ui
 
 DISTFILES +=
 
diff --git a/discretestatewindow.cpp b/discretestatewindow.cpp
new file mode 100644
index 0000000..d198ae3
--- /dev/null
+++ b/discretestatewindow.cpp
@@ -0,0 +1,196 @@
+#include "discretestatewindow.h"
+#include "ui_discretestatewindow.h"
+#include "mainwindow.h"
+
+DiscreteStateWindow::DiscreteStateWindow(const QVector<CANFrame> *frames, QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::DiscreteStateWindow)
+{
+    ui->setupUi(this);
+
+    modelFrames = frames;
+    operatingState = DWStates::IDLE;
+
+    timer = new QTimer();
+    timer->setInterval(100);
+
+    connect(ui->btnStart, SIGNAL(clicked(bool)), this, SLOT(handleStartButton()));
+    connect(timer, SIGNAL(timeout()), this, SLOT(handleTick()));
+    connect(MainWindow::getReference(), SIGNAL(framesUpdated(int)), this, SLOT(updatedFrames(int)));
+}
+
+DiscreteStateWindow::~DiscreteStateWindow()
+{
+    timer->stop();
+
+    for (int i = 0; i < stateFrames.count(); i++)
+    {
+        stateFrames[i]->clear();
+        delete(stateFrames[i]);
+    }
+
+    delete timer;
+    delete ui;
+}
+
+void DiscreteStateWindow::updatedFrames(int numFrames)
+{
+    CANFrame thisFrame;
+    if (numFrames == -1) //all frames deleted. Kill the display
+    {
+    }
+    else if (numFrames == -2) //all new set of frames. Reset
+    {
+    }
+    else //just got some new frames. See if they are relevant.
+    {
+        for (int i = modelFrames->count() - numFrames; i < modelFrames->count(); i++)
+        {
+            thisFrame = modelFrames->at(i);
+            if (operatingState == DWStates::IDLE) stateFrames[0]->append(thisFrame);
+            else stateFrames[currToggleState + 1]->append(thisFrame);
+        }
+    }
+}
+
+void DiscreteStateWindow::showEvent(QShowEvent* event)
+{
+    QDialog::showEvent(event);
+
+    readSettings();
+
+    qDebug() << "DiscreteState show event was processed";
+}
+
+void DiscreteStateWindow::closeEvent(QCloseEvent *event)
+{
+    Q_UNUSED(event);
+    writeSettings();
+}
+
+void DiscreteStateWindow::readSettings()
+{
+    QSettings settings;
+    if (settings.value("Main/SaveRestorePositions", false).toBool())
+    {
+        resize(settings.value("DiscreteState/WindowSize", QSize(400, 300)).toSize());
+        move(settings.value("DiscreteState/WindowPos", QPoint(50, 50)).toPoint());
+    }
+
+}
+
+void DiscreteStateWindow::writeSettings()
+{
+    QSettings settings;
+
+    if (settings.value("Main/SaveRestorePositions", false).toBool())
+    {
+        settings.setValue("DiscreteState/WindowSize", size());
+        settings.setValue("DiscreteState/WindowPos", pos());
+    }
+}
+
+void DiscreteStateWindow::updateStateLabel()
+{
+    QPalette pal;
+    switch(operatingState)
+    {
+    case DWStates::IDLE:
+        ui->lblStatus->setText("WAIT");
+        pal = ui->lblStatus->palette();
+        pal.setColor(QPalette::WindowText, Qt::red);
+        ui->lblStatus->setPalette(pal);
+        break;
+    case DWStates::COUNTDOWN_SIGNAL:
+        ui->lblStatus->setText(QString::number(ticksUntilStateChange * 0.1, 'f', 1) + "...");
+        pal = ui->lblStatus->palette();
+        pal.setColor(QPalette::WindowText, Qt::blue);
+        ui->lblStatus->setPalette(pal);
+        break;
+    case DWStates::COUNTDOWN_WAITING:
+        ui->lblStatus->setText("Return to resting state");
+        pal = ui->lblStatus->palette();
+        pal.setColor(QPalette::WindowText, Qt::red);
+        ui->lblStatus->setPalette(pal);
+        break;
+    case DWStates::GETTING_SIGNAL:
+        ui->lblStatus->setText("Go to state " + QString::number(currToggleState + 1));
+        pal = ui->lblStatus->palette();
+        pal.setColor(QPalette::WindowText, Qt::green);
+        ui->lblStatus->setPalette(pal);
+        break;
+    }
+}
+
+void DiscreteStateWindow::handleStartButton()
+{
+    operatingState = DWStates::COUNTDOWN_SIGNAL;
+
+    ticksPerStateChange = ticksUntilStateChange = ui->spinFreq->value() * 10;
+    numToggleStates = ui->spinStates->value();
+    numIterations = ui->spinIterations->value();
+
+    currToggleState = 0;
+    currIteration = 0;
+
+    for (int i = 0; i < stateFrames.count(); i++)
+    {
+        stateFrames[i]->clear();
+        delete(stateFrames[i]);
+    }
+
+    for (int j = 0; j <= numToggleStates; j++)
+    {
+        stateFrames.append(new QVector<CANFrame>());
+    }
+
+    timer->start();
+}
+
+void DiscreteStateWindow::handleTick()
+{
+    switch (operatingState)
+    {
+    case DWStates::IDLE:
+        break;
+    case DWStates::COUNTDOWN_SIGNAL:
+        ticksUntilStateChange--;
+        if (ticksUntilStateChange == 0)
+        {
+            ticksUntilStateChange = ticksPerStateChange;
+            operatingState = DWStates::GETTING_SIGNAL;
+        }
+        break;
+    case DWStates::COUNTDOWN_WAITING:
+        ticksUntilStateChange--;
+        if (ticksUntilStateChange == 0)
+        {
+            ticksUntilStateChange = ticksPerStateChange;
+            currIteration++;
+            if (currIteration == numIterations)
+            {
+                operatingState = DWStates::IDLE;
+                timer->stop();
+                //call to calculate our findings here.
+            }
+            else operatingState = DWStates::COUNTDOWN_SIGNAL;
+        }
+        break;
+    case DWStates::GETTING_SIGNAL:
+        ticksUntilStateChange--;
+        if (ticksUntilStateChange == 0)
+        {
+            ticksUntilStateChange = ticksPerStateChange;
+            operatingState = DWStates::COUNTDOWN_WAITING;
+            currToggleState++;
+            if (currToggleState == numToggleStates) currToggleState = 0;
+        }
+        break;
+    }
+    updateStateLabel();
+}
+
+void DiscreteStateWindow::calculateResults()
+{
+
+}
diff --git a/discretestatewindow.h b/discretestatewindow.h
new file mode 100644
index 0000000..311f7be
--- /dev/null
+++ b/discretestatewindow.h
@@ -0,0 +1,57 @@
+#ifndef DISCRETESTATEWINDOW_H
+#define DISCRETESTATEWINDOW_H
+
+#include <QDialog>
+#include <QTimer>
+#include "can_structs.h"
+
+namespace Ui {
+class DiscreteStateWindow;
+}
+
+namespace DWStates {
+enum DiscreteWindowState
+{
+    IDLE,
+    COUNTDOWN_SIGNAL,
+    COUNTDOWN_WAITING,
+    GETTING_SIGNAL
+};
+}
+
+using namespace DWStates;
+class DiscreteStateWindow : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit DiscreteStateWindow(const QVector<CANFrame> *frames, QWidget *parent = 0);
+    ~DiscreteStateWindow();
+    void showEvent(QShowEvent*);
+
+private slots:
+    void updatedFrames(int);
+    void handleStartButton();
+    void handleTick();
+
+private:
+    Ui::DiscreteStateWindow *ui;
+    const QVector<CANFrame> *modelFrames;
+    QList< QVector<CANFrame> *> stateFrames;
+    QTimer *timer;
+    DiscreteWindowState operatingState;
+    int ticksUntilStateChange;
+    int ticksPerStateChange;
+    int numToggleStates;
+    int currToggleState;
+    int numIterations;
+    int currIteration;
+
+    void closeEvent(QCloseEvent *event);
+    void readSettings();
+    void writeSettings();
+    void updateStateLabel();
+    void calculateResults();
+};
+
+#endif // DISCRETESTATEWINDOW_H
diff --git a/discretestatewindow.ui b/discretestatewindow.ui
new file mode 100644
index 0000000..ed01b92
--- /dev/null
+++ b/discretestatewindow.ui
@@ -0,0 +1,154 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>DiscreteStateWindow</class>
+ <widget class="QDialog" name="DiscreteStateWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Single/Multi State WIndow</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item alignment="Qt::AlignHCenter">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Candidate Matches:</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QTreeWidget" name="treeMatches">
+     <column>
+      <property name="text">
+       <string notr="true">1</string>
+      </property>
+     </column>
+    </widget>
+   </item>
+   <item>
+    <layout class="QGridLayout" name="gridLayout">
+     <item row="0" column="1" alignment="Qt::AlignHCenter">
+      <widget class="QLabel" name="label_3">
+       <property name="text">
+        <string>Number of States:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="0" alignment="Qt::AlignHCenter">
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Toggle Frequency (Seconds)</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="0">
+      <widget class="QSpinBox" name="spinFreq">
+       <property name="minimum">
+        <number>1</number>
+       </property>
+       <property name="maximum">
+        <number>30</number>
+       </property>
+       <property name="value">
+        <number>2</number>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QSpinBox" name="spinStates">
+       <property name="minimum">
+        <number>1</number>
+       </property>
+       <property name="maximum">
+        <number>20</number>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="2" alignment="Qt::AlignHCenter">
+      <widget class="QLabel" name="label_4">
+       <property name="text">
+        <string>Iterations</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="2">
+      <widget class="QSpinBox" name="spinIterations">
+       <property name="minimum">
+        <number>1</number>
+       </property>
+       <property name="maximum">
+        <number>10</number>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QPushButton" name="btnStart">
+     <property name="text">
+      <string>Go for it</string>
+     </property>
+    </widget>
+   </item>
+   <item alignment="Qt::AlignHCenter">
+    <widget class="QLabel" name="lblStatus">
+     <property name="palette">
+      <palette>
+       <active>
+        <colorrole role="WindowText">
+         <brush brushstyle="SolidPattern">
+          <color alpha="255">
+           <red>255</red>
+           <green>0</green>
+           <blue>0</blue>
+          </color>
+         </brush>
+        </colorrole>
+       </active>
+       <inactive>
+        <colorrole role="WindowText">
+         <brush brushstyle="SolidPattern">
+          <color alpha="255">
+           <red>255</red>
+           <green>0</green>
+           <blue>0</blue>
+          </color>
+         </brush>
+        </colorrole>
+       </inactive>
+       <disabled>
+        <colorrole role="WindowText">
+         <brush brushstyle="SolidPattern">
+          <color alpha="255">
+           <red>120</red>
+           <green>120</green>
+           <blue>120</blue>
+          </color>
+         </brush>
+        </colorrole>
+       </disabled>
+      </palette>
+     </property>
+     <property name="font">
+      <font>
+       <family>Nirmala UI</family>
+       <pointsize>26</pointsize>
+       <weight>75</weight>
+       <bold>true</bold>
+      </font>
+     </property>
+     <property name="text">
+      <string>WAIT</string>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/mainwindow.cpp b/mainwindow.cpp
index fe17f50..bb36260 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -10,9 +10,13 @@
 
 /*
 Things that were planned for the GVRET-PC project but never completed.
+
 Single / Multi state - The goal is to find bits that change based on toggles or discrete state items (shifters, etc)
+
 Range state - Find things that range like accelerator pedal inputs, road speed, tach, etc
+
 fuzzy scope - Try to find potential places where a given value might be stored - offer guesses and the program tries to find candidates for you
+or, try to find things that appear to be multi-byte integers
 */
 
 QString MainWindow::loadedFileName = "";
@@ -104,6 +108,7 @@ MainWindow::MainWindow(QWidget *parent) :
     dbcMainEditor = NULL;
     comparatorWindow = NULL;
     settingsDialog = NULL;
+    discreteStateWindow = NULL;
     dbcHandler = new DBCHandler;
     bDirty = false;
     inhibitFilterUpdate = false;
@@ -224,6 +229,12 @@ MainWindow::~MainWindow()
         delete settingsDialog;
     }
 
+    if (discreteStateWindow)
+    {
+        discreteStateWindow->close();
+        delete discreteStateWindow;
+    }
+
     delete ui;
     delete dbcHandler;
     model->clearFrames();
@@ -983,7 +994,11 @@ void MainWindow::showComparisonWindow()
 
 void MainWindow::showSingleMultiWindow()
 {
-    //not done yet
+    if (!discreteStateWindow)
+    {
+        discreteStateWindow = new DiscreteStateWindow(model->getListReference());
+    }
+    discreteStateWindow->show();
 }
 
 void MainWindow::showRangeWindow()
diff --git a/mainwindow.h b/mainwindow.h
index 6d7ea61..488b42c 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -17,6 +17,7 @@
 #include "dbchandler.h"
 #include "dbcmaineditor.h"
 #include "mainsettingsdialog.h"
+#include "discretestatewindow.h"
 
 namespace Ui {
 class MainWindow;
@@ -115,6 +116,7 @@ private:
     DBCMainEditor *dbcMainEditor;
     FileComparatorWindow *comparatorWindow;
     MainSettingsDialog *settingsDialog;
+    DiscreteStateWindow *discreteStateWindow;
 
     //various private storage
     QLabel lbStatusConnected;
diff --git a/serialworker.h b/serialworker.h
index 0b3c3b7..d3d7b18 100644
--- a/serialworker.h
+++ b/serialworker.h
@@ -9,6 +9,8 @@
 #include "can_structs.h"
 #include "canframemodel.h"
 
+namespace SERIALSTATE {
+
 enum STATE //keep this enum synchronized with the Arduino firmware project
 {
     IDLE,
@@ -24,6 +26,9 @@ enum STATE //keep this enum synchronized with the Arduino firmware project
     SET_SINGLEWIRE_MODE
 };
 
+}
+
+using namespace SERIALSTATE;
 class SerialWorker : public QObject
 {
     Q_OBJECT