diff --git a/comdel/display/component_display.cpp b/comdel/display/component_display.cpp
index 086578d..ba55739 100644
--- a/comdel/display/component_display.cpp
+++ b/comdel/display/component_display.cpp
@@ -4,9 +4,9 @@
 #include "mainwindow.h"
 
 #include <QMenu>
+#include <QLine>
 #include <QGraphicsSceneContextMenuEvent>
 #include <iostream>
-#include <QDebug>
 
 namespace display {
 
@@ -47,14 +47,20 @@ void Component::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
             auto view = dynamic_cast<Schema*>(this->scene()->views()[0]);
             view->state = Schema::CREATING_CONNECTION;
             view->context.pin = this;
-            view->context.startingPoint = view->mapToScene(event->pos().toPoint());
+            view->context.startingPoint = dynamic_cast<ComponentGroup*>(this->parentItem())->pos() + QPointF(pin.getDisplayPin().getConnectionX(), pin.getDisplayPin().getConnectionY());
+            view->context.line = new QGraphicsLineItem(QLineF(view->context.startingPoint, event->scenePos()));
+            this->scene()->addItem(view->context.line);
+
+            view->showConnectable(this);
         }
     }
 
     void Pin::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
         auto view = dynamic_cast<Schema*>(this->scene()->views()[0]);
         if(view->state == Schema::CREATING_CONNECTION) {
-
+            auto line = view->context.line->line();
+            line.setP2(event->scenePos());
+            view->context.line->setLine(line);
         }
     }
 
@@ -62,6 +68,9 @@ void Component::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
         if(event->button() == Qt::MouseButton::LeftButton) {
             auto view = dynamic_cast<Schema*>(this->scene()->views()[0]);
             view->state = Schema::DEFAULT;
+            this->scene()->removeItem(view->context.line);
+            delete view->context.line;
+            view->removeConnectable(event->scenePos());
         }
     }
 
diff --git a/comdel/display/component_display.h b/comdel/display/component_display.h
index 792bd23..f82d7c8 100644
--- a/comdel/display/component_display.h
+++ b/comdel/display/component_display.h
@@ -15,8 +15,10 @@ class Pin: public QGraphicsItemGroup
 {
 private:
     domain::Pin pin;
+    std::shared_ptr<domain::ComponentInstance> componentInstance;
+
 public:
-    Pin(domain::Pin pin): pin(pin) {
+    Pin(domain::Pin pin, std::shared_ptr<domain::ComponentInstance> componentInstance): pin(pin), componentInstance(componentInstance) {
         pin.getDisplayPin().render(this);
     }
 
@@ -25,6 +27,13 @@ public:
     void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
     void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
 
+    domain::Pin& getPin() {
+        return pin;
+    }
+
+    domain::ComponentInstance* getComponentInstance() {
+        return componentInstance.get();
+    }
 };
 
 class Component: public QGraphicsItemGroup
@@ -56,8 +65,13 @@ class ComponentGroup: public QGraphicsItemGroup
 {
 private:
     std::shared_ptr<domain::ComponentInstance> componentInstance;
+    std::vector<display::Pin*> pins;
 
 public:
+
+    std::shared_ptr<domain::ComponentInstance> getComponentInstance() { return componentInstance; }
+    std::vector<display::Pin*>& getPins() { return pins; }
+
     explicit ComponentGroup(const std::shared_ptr<domain::ComponentInstance>& instance): componentInstance(instance) {
         setFlag(ItemIsMovable, true);
         setFlag(ItemSendsGeometryChanges, true);
@@ -67,7 +81,8 @@ public:
         addToGroup(new display::Component(instance));
 
         for(auto &pin: instance->component.getPins()) {
-            addToGroup(new display::Pin(pin));
+            pins.push_back(new display::Pin(pin, componentInstance));
+            addToGroup(pins.back());
         }
 
         setPos(instance->position.first, instance->position.second);
@@ -118,6 +133,12 @@ public:
         auto pin = connection->instance->component.getPin(connection->connection.getComponent().pin).getDisplayPin();
 
         setLine(connection->instance->position.first + pin.getConnectionX(), connection->instance->position.second + pin.getConnectionY(),  connection->bus->position.first + busPosition.width()/2, connection->bus->position.second + busPosition.height()/2);
+
+        connection->start.first = connection->instance->position.first + pin.getConnectionX();
+        connection->start.second = connection->instance->position.second + pin.getConnectionY();
+        connection->end.first = connection->bus->position.first + busPosition.width()/2;
+        connection->end.second = connection->bus->position.second + busPosition.height()/2;
+
     }
 
     void contextMenuEvent(QGraphicsSceneContextMenuEvent *event) override;
@@ -130,10 +151,9 @@ public:
         domain::DirectConnectionInstance* connection;
         ComponentGroup* first;
         ComponentGroup* second;
-        BusGroup* bus;
 
     public:
-        DirectConnection(domain::DirectConnectionInstance* connection, ComponentGroup *first, ComponentGroup *second, BusGroup *bus): connection(connection), first(first), second(second), bus(bus) {
+        DirectConnection(domain::DirectConnectionInstance* connection, ComponentGroup *first, ComponentGroup *second): connection(connection), first(first), second(second) {
             updateConnection();
             setHandlesChildEvents(false);
         }
@@ -144,6 +164,12 @@ public:
 
             setLine(connection->instance->position.first + pin1.getConnectionX(), connection->instance->position.second + pin1.getConnectionY(),
                     connection->secondInstance->position.first + pin2.getConnectionX(), connection->secondInstance->position.second + pin2.getConnectionY());
+
+            connection->start.first = connection->instance->position.first + pin1.getConnectionX();
+            connection->start.second = connection->instance->position.second + pin1.getConnectionY();
+            connection->end.first = connection->secondInstance->position.first + pin2.getConnectionX();
+            connection->end.second = connection->secondInstance->position.second + pin2.getConnectionY();
+
         }
 
         void contextMenuEvent(QGraphicsSceneContextMenuEvent *event) override;
diff --git a/comdel/display/schema_display.cpp b/comdel/display/schema_display.cpp
index 7dae0e8..01f0b88 100644
--- a/comdel/display/schema_display.cpp
+++ b/comdel/display/schema_display.cpp
@@ -3,14 +3,15 @@
 
 #include <QDrag>
 #include <QDragEnterEvent>
-#include <QDropEvent>
 #include <QMimeData>
-#include <iostream>
 
 namespace display {
 
 Schema::Schema()
 {
+    this->selectedBrush.setColor(QColor::fromRgb(20,20,125));
+    this->selectedPen.setColor(QColor::fromRgb(20, 20, 125));
+
     this->setScene(&scene);
     this->setAcceptDrops(true);
 }
@@ -18,16 +19,21 @@ Schema::Schema()
 
 void Schema::setSchema(domain::Schema* _schema, domain::Library* _library)
 {
-    std::map<std::string, display::ComponentGroup*> components;
-    std::map<std::string, display::BusGroup*> buses;
+    components.clear();
+    buses.clear();
 
     scene.clear();
-    connections.clear();
+    busConnections.clear();
     this->schema = _schema;
     this->library = _library;
     if(schema != nullptr) {
         for(auto &instance: schema->componentInstances) {
             auto group = new display::ComponentGroup(instance);
+            for(auto pin: group->getPins()) {
+                display::Pin* p = pin;
+                domain::ConnectionComponent connection{instance->name, p->getPin().getName()};
+                pins.insert(std::make_pair(connection, p));
+            }
             components.insert(std::make_pair(instance->name, group));
             scene.addItem(group);
         }
@@ -42,7 +48,13 @@ void Schema::setSchema(domain::Schema* _schema, domain::Library* _library)
             auto busInstance = dynamic_cast<domain::BusConnectionInstance*>(connection.get());
             if(busInstance != nullptr) {
                 auto con = new display::BusConnection(busInstance, components[busInstance->instance->name], buses[busInstance->bus->name]);
-                connections.push_back(con);
+                busConnections.push_back(con);
+                scene.addItem(con);
+            }
+            auto directInstance = dynamic_cast<domain::DirectConnectionInstance*>(connection.get());
+            if(directInstance != nullptr) {
+                auto con = new display::DirectConnection(directInstance, components[directInstance->instance->name], components[directInstance->secondInstance->name]);
+                directConnections.push_back(con);
                 scene.addItem(con);
             }
         }
@@ -51,7 +63,10 @@ void Schema::setSchema(domain::Schema* _schema, domain::Library* _library)
 
 void Schema::updateConnections() {
     if(schema != nullptr) {
-        for(auto conn: connections) {
+        for(auto conn: busConnections) {
+            conn->updateConnection();
+        }
+        for(auto conn: directConnections) {
             conn->updateConnection();
         }
     }
@@ -61,8 +76,6 @@ void Schema::updateConnections() {
         if(event->mimeData()->hasFormat("comdel/component") ||
            event->mimeData()->hasFormat("comdel/bus")) {
             event->acceptProposedAction();
-        } else {
-            std::cout<<"false"<< std::endl;
         }
     }
 
@@ -82,6 +95,13 @@ void Schema::updateConnections() {
 
             auto group = new display::ComponentGroup(instance);
             scene.addItem(group);
+            for(auto pin: group->getPins()) {
+                display::Pin* p = pin;
+                domain::ConnectionComponent connection{instance->name, p->getPin().getName()};
+                pins.insert(std::make_pair(connection, p));
+            }
+
+            components[instance->name] = group;
 
             event->acceptProposedAction();
         }
@@ -95,6 +115,7 @@ void Schema::updateConnections() {
 
             auto group = new display::BusGroup(instance);
             scene.addItem(group);
+            buses[instance->name] = group;
 
             event->acceptProposedAction();
         }
@@ -104,4 +125,140 @@ void Schema::updateConnections() {
         event->acceptProposedAction();
     }
 
+    void Schema::removeConnectable(QPointF endPoint) {
+        auto instance = context.pin->getComponentInstance();
+        auto& pin = context.pin->getPin();
+
+        auto busInstances = getAvailableConnectionBusses(instance, pin);
+
+        for(auto &bus: busInstances) {
+            auto rect = buses[bus->name]->boundingRect();
+            rect = QRectF(buses[bus->name]->x(), buses[bus->name]->y(), rect.width(), rect.height());
+
+            if(rect.contains(endPoint)) {
+                auto con = library->getConnection({instance->component.getName(), pin.getName()}, bus->bus.getName());
+                if(con.has_value()) {
+                    std::vector<domain::InstanceAttribute> attributes;
+                    for(auto attr: con->getAttributes()) {
+                        attributes.emplace_back(attr.getName(), attr.getDefault(), attr);
+                    }
+
+                    auto conInstance = std::make_shared<domain::BusConnectionInstance>(instance, attributes, bus, *con);
+                    schema->connections.push_back(conInstance);
+
+                    if (conInstance != nullptr) {
+                        auto c = new display::BusConnection(conInstance.get(), components[conInstance->instance->name],
+                                                              buses[conInstance->bus->name]);
+                        busConnections.push_back(c);
+                        scene.addItem(c);
+                    }
+                    break;
+                }
+            }
+        }
+
+        auto pinInstances = getAvailableConnectionPins(instance, pin);
+
+        for(auto &pinInstance: pinInstances) {
+            auto rect = pins[pinInstance]->boundingRect();
+            rect.setX(pins[pinInstance]->scenePos().x());
+            rect.setY(pins[pinInstance]->scenePos().y());
+
+            if(rect.contains(endPoint)) {
+                auto name = components[pinInstance.component]->getComponentInstance()->component.getName();
+                auto con = library->getConnection({instance->component.getName(), pin.getName()}, {name, pinInstance.pin});
+                if(con.has_value()) {
+                    auto bus = library->getBus(con->getBus());
+                    auto busInstance = std::make_shared<domain::BusInstance>(bus.getName(), bus);
+                    schema->busInstances.push_back(busInstance);
+
+                    std::vector<domain::InstanceAttribute> attributes;
+                    for(auto attr: con->getAttributes()) {
+                        attributes.emplace_back(attr.getName(), attr.getDefault(), attr);
+                    }
+
+                    auto conInstance = std::make_shared<domain::DirectConnectionInstance>(instance, components[pinInstance.component]->getComponentInstance().get(), attributes, busInstance.get(), *con);
+                    schema->connections.push_back(conInstance);
+
+                    if (conInstance != nullptr) {
+                        auto c = new display::DirectConnection(conInstance.get(), components[conInstance->instance->name], components[conInstance->secondInstance->name]);
+                        directConnections.push_back(c);
+                        scene.addItem(c);
+                    }
+                    break;
+                }
+            }
+        }
+
+        updateConnections();
+
+
+        for(auto& item: this->context.selectable) {
+            this->scene.removeItem(item);
+            delete item;
+        }
+        this->context.selectable.clear();
+    }
+
+    void Schema::showConnectable(Pin *domainPin) {
+        auto& pin = domainPin->getPin();
+
+        auto busInstances = getAvailableConnectionBusses(domainPin->getComponentInstance(), domainPin->getPin());
+
+        for(auto bus: busInstances) {
+            auto& group = buses[bus->name];
+            auto rect = new QGraphicsRectItem(group->boundingRect());
+            rect->setPen(selectedPen);
+            rect->setPos(group->scenePos());
+
+            auto _rect = rect->rect();
+            _rect.setWidth(_rect.width() + 1);
+            _rect.setHeight(_rect.height() + 1);
+            rect->setRect(_rect);
+
+            context.selectable.push_back(rect);
+            scene.addItem(rect);
+        }
+
+        std::vector<domain::ConnectionComponent> pinInstances = getAvailableConnectionPins(domainPin->getComponentInstance(), domainPin->getPin());
+
+        for(auto& pinInstance: pinInstances) {
+            auto& instance = pins[pinInstance];
+            auto rect = new QGraphicsRectItem(instance->boundingRect());
+            rect->setPen(selectedPen);
+            rect->setPos(instance->scenePos());
+
+            auto _rect = rect->rect();
+            _rect.setWidth(_rect.width() + 1);
+            _rect.setHeight(_rect.height() + 1);
+            rect->setRect(_rect);
+
+            context.selectable.push_back(rect);
+            scene.addItem(rect);
+        }
+
+    }
+
+    std::vector<domain::BusInstance*> Schema::getAvailableConnectionBusses(domain::ComponentInstance *instance, domain::Pin &pin) {
+        std::vector<domain::BusInstance*> instances;
+        for(const auto& bus: schema->busInstances) {
+            if(library->hasConnection(domain::ConnectionComponent{instance->component.getName(), pin.getName()}, bus->bus.getName())) {
+                instances.push_back(bus.get());
+            }
+        }
+        return instances;
+    }
+
+    std::vector<domain::ConnectionComponent> Schema::getAvailableConnectionPins(domain::ComponentInstance *instance, domain::Pin &pin) {
+        std::vector<domain::ConnectionComponent> instances;
+        domain::ConnectionComponent source{instance->component.getName(), pin.getName()};
+        for(const auto& entry: pins) {
+            std::string name = components[entry.first.component]->getComponentInstance()->component.getName();
+            if(library->hasConnection(source, domain::ConnectionComponent{name, entry.first.pin})) {
+                instances.push_back(entry.first);
+            }
+        }
+        return instances;
+    }
+
 } // namespace display
diff --git a/comdel/display/schema_display.h b/comdel/display/schema_display.h
index 131f0bd..0d0173e 100644
--- a/comdel/display/schema_display.h
+++ b/comdel/display/schema_display.h
@@ -4,9 +4,11 @@
 
 #include <QGraphicsView>
 #include <QWidget>
+#include <QGraphicsLineItem>
 
 #include <comdel/domain/schema.h>
 #include <comdel/domain/library.h>
+#include "component_display.h"
 
 namespace display {
 
@@ -18,27 +20,41 @@ class Schema: public QGraphicsView
 
 public:
 
+    QBrush selectedBrush;
+    QPen selectedPen;
+
     enum State {
         DEFAULT,
         CREATING_CONNECTION
     };
 
     struct Context {
-        display::Pin *pin;
+        display::Pin *pin = nullptr;
         QPointF startingPoint;
+        QGraphicsLineItem *line = nullptr;
+        std::vector<QGraphicsRectItem*> selectable;
     };
 
+    std::map<std::string, display::ComponentGroup*> components;
+    std::map<std::string, display::BusGroup*> buses;
+    std::map<domain::ConnectionComponent, display::Pin*> pins;
+
     State state = DEFAULT;
     Context context;
 
     Schema();
 
-    std::vector<BusConnection*> connections;
+    std::vector<BusConnection*> busConnections;
+    std::vector<DirectConnection*> directConnections;
 
     void setSchema(domain::Schema* schema, domain::Library* library);
 
     void updateConnections();
 
+    void removeConnectable(QPointF f);
+
+    void showConnectable(Pin *pin);
+
 protected:
 
     void dragEnterEvent(QDragEnterEvent *event) override;
@@ -50,6 +66,10 @@ private:
 
     domain::Schema* schema;
     domain::Library* library;
+
+    std::vector<domain::BusInstance*> getAvailableConnectionBusses(domain::ComponentInstance *instance, domain::Pin &pin);
+
+    std::vector<domain::ConnectionComponent> getAvailableConnectionPins(domain::ComponentInstance *instance, domain::Pin &pin);
 };
 
 } // namespace display
diff --git a/comdel/domain/comdel_generator.cpp b/comdel/domain/comdel_generator.cpp
index fabf606..03836dc 100644
--- a/comdel/domain/comdel_generator.cpp
+++ b/comdel/domain/comdel_generator.cpp
@@ -94,6 +94,7 @@ void generateComdelFile(Schema *schema, Library &library, std::ostream &buffer)
 }
 
 void generateBus(BusInstance *bus, ostream &buffer);
+void generateConnection(ConnectionInstance *connection, ostream &buffer);
 
 void generateDisplay(Schema *schema, ostream &buffer) {
     buffer << "\n\tdisplay {\n";
@@ -106,9 +107,20 @@ void generateDisplay(Schema *schema, ostream &buffer) {
         generateBus(bus.get(), buffer);
     }
 
+    buffer << "\n";
+
+    for(auto &connection: schema->connections) {
+        generateConnection(connection.get(), buffer);
+    }
+
     buffer << "\t}\n";
 }
 
+void generateConnection(ConnectionInstance *connection, ostream &buffer) {
+    buffer << "\t\tline {x1:" << connection->start.first << "; y1:" << connection->start.second << "; " <<
+                        "x2:" << connection->end.first << "; y2:" << connection->end.second << ";}" << "\n";
+}
+
 void generateBus(BusInstance *bus, ostream &buffer) {
     buffer << "\n";
     buffer << "\t\t// " << bus->name << " bus\n\n";
diff --git a/comdel/domain/connection.cpp b/comdel/domain/connection.cpp
index 7f611b7..601f5ec 100644
--- a/comdel/domain/connection.cpp
+++ b/comdel/domain/connection.cpp
@@ -63,4 +63,14 @@ bool Connection::isConnecting(ConnectionComponent component, std::string bus, Co
             (this->first == secondComponent && this->bus == bus && this->second == component);
 }
 
+
+    bool Connection::isConnecting(ConnectionComponent component, ConnectionComponent secondComponent) {
+        if(!second.has_value()) {
+            return false;
+        }
+        return  (this->first == component && this->second == secondComponent) ||
+                (this->first == secondComponent && this->second == component);
+    }
+
+
 } // namespace domain
diff --git a/comdel/domain/connection.h b/comdel/domain/connection.h
index 362cd5c..8319ee7 100644
--- a/comdel/domain/connection.h
+++ b/comdel/domain/connection.h
@@ -21,6 +21,17 @@ struct ConnectionComponent
     {
         return !operator==(rhs);
     }
+    bool operator<(const ConnectionComponent& rhs) const
+    {
+        if(component < rhs.component) {
+            return true;
+        } else if(component == rhs.component) {
+            if(pin < rhs.pin) {
+                return true;
+            }
+        }
+        return false;
+    }
 };
 
 class Connection
@@ -40,6 +51,7 @@ public:
     bool isConnecting(ConnectionComponent first);
     bool isConnecting(ConnectionComponent first, std::string bus);
     bool isConnecting(ConnectionComponent first, std::string bus, ConnectionComponent second);
+    bool isConnecting(ConnectionComponent first, ConnectionComponent second);
 
 
     ConnectionComponent getComponent();
diff --git a/comdel/domain/connectioninstance.h b/comdel/domain/connectioninstance.h
index 6e3d7e0..e84b171 100644
--- a/comdel/domain/connectioninstance.h
+++ b/comdel/domain/connectioninstance.h
@@ -5,8 +5,6 @@
 #include "instance.h"
 #include "wireinstance.h"
 
-
-
 namespace domain {
 
 class ConnectionInstance
@@ -19,6 +17,9 @@ public:
 
     std::vector<InstanceAttribute> attributes;
 
+    std::pair<int, int> start;
+    std::pair<int, int> end;
+
     ConnectionInstance(ComponentInstance *instance, std::vector<InstanceAttribute> attributes, Connection connection);
 
     InstanceAttribute getAttribute(string attribute);
diff --git a/comdel/domain/instance.cpp b/comdel/domain/instance.cpp
index fde02d5..7deb689 100644
--- a/comdel/domain/instance.cpp
+++ b/comdel/domain/instance.cpp
@@ -5,7 +5,10 @@ namespace domain {
 BusInstance::BusInstance(std::string name, std::pair<int, int> position, Bus bus, int size)
     : name(name), position(position), bus(bus), size(size)
 {}
-ComponentInstance::ComponentInstance(std::string name, std::vector<InstanceAttribute> attributes, std::pair<int, int> position, Component component)
+
+    BusInstance::BusInstance(std::string name, Bus bus): name(name), bus(bus), position(0,0), size(0) {}
+
+    ComponentInstance::ComponentInstance(std::string name, std::vector<InstanceAttribute> attributes, std::pair<int, int> position, Component component)
     : name(name), attributes(std::move(attributes)), position(position), component(component)
 {}
 
diff --git a/comdel/domain/instance.h b/comdel/domain/instance.h
index 1e8412a..38c158d 100644
--- a/comdel/domain/instance.h
+++ b/comdel/domain/instance.h
@@ -21,6 +21,8 @@ public:
     Bus bus;
     int size;
 
+    BusInstance(std::string name, Bus bus);
+
     BusInstance(std::string name, std::pair<int, int> position, Bus bus, int size);
 
     virtual ~BusInstance() = default;
diff --git a/comdel/domain/library.cpp b/comdel/domain/library.cpp
index 295070e..e36d33e 100644
--- a/comdel/domain/library.cpp
+++ b/comdel/domain/library.cpp
@@ -113,4 +113,18 @@ std::string Library::getMessage(std::string key) {
     return messages[key];
 }
 
+    bool Library::hasConnection(ConnectionComponent component, ConnectionComponent secondComponent) {
+        return getConnection(component, secondComponent).has_value();
+    }
+
+    std::optional<Connection>
+    Library::getConnection(ConnectionComponent component, ConnectionComponent secondComponent) {
+        for(auto & connection : connections) {
+            if(connection.isConnecting(component, secondComponent)) {
+                return connection;
+            }
+        }
+        return nullopt;
+    }
+
 } // namespace domain
diff --git a/comdel/domain/library.h b/comdel/domain/library.h
index 984cc63..921d278 100644
--- a/comdel/domain/library.h
+++ b/comdel/domain/library.h
@@ -60,6 +60,10 @@ public:
 
     bool hasConnection(ConnectionComponent component, std::string bus, ConnectionComponent secondComponent);
     std::optional<Connection> getConnection(ConnectionComponent component, std::string bus, ConnectionComponent secondComponent);
+
+    bool hasConnection(ConnectionComponent component, ConnectionComponent secondComponent);
+    std::optional<Connection> getConnection(ConnectionComponent component, ConnectionComponent secondComponent);
+
 };
 
 } // namespace domain
diff --git a/comdel/domain/schema.h b/comdel/domain/schema.h
index bcdadba..7d9ba0b 100644
--- a/comdel/domain/schema.h
+++ b/comdel/domain/schema.h
@@ -9,8 +9,7 @@
 
 namespace domain {
 
-class Schema
-{
+class Schema {
 public:
     Schema();
 
@@ -19,16 +18,8 @@ public:
 
     std::vector<shared_ptr<ConnectionInstance>> connections;
 
-    BusInstance *getBusInstance(std::string& name) {
-        for(auto& instance: busInstances) {
-            if (instance->name == name) {
-                return instance.get();
-            }
-        }
-        return nullptr;
-    }
-    ComponentInstance *getComponentInstance(std::string& name) {
-        for(auto& instance: componentInstances) {
+    BusInstance *getBusInstance(std::string &name) {
+        for (auto &instance: busInstances) {
             if (instance->name == name) {
                 return instance.get();
             }
@@ -36,8 +27,18 @@ public:
         return nullptr;
     }
 
-    bool hasConnection(string& component, string& pin);
-    ConnectionInstance* getConnection(string& component, string& pin);
+    ComponentInstance *getComponentInstance(std::string &name) {
+        for (auto &instance: componentInstances) {
+            if (instance->name == name) {
+                return instance.get();
+            }
+        }
+        return nullptr;
+    }
+
+    bool hasConnection(string &component, string &pin);
+
+    ConnectionInstance *getConnection(string &component, string &pin);
 };
 
 } // namespace domain
diff --git a/examples/simplified FRISC model/comdel.system b/examples/simplified FRISC model/comdel.system
new file mode 100644
index 0000000..2d81486
--- /dev/null
+++ b/examples/simplified FRISC model/comdel.system	
@@ -0,0 +1,53 @@
+// Version 0.0.1
+#include "libraries\frisc\vjezba1\FRISC.cdl"
+#include "libraries\frisc\vjezba1\memory.cdl"
+
+
+
+component System
+{
+  clock 100MHz;
+	//directRam
+	wire INT;
+
+
+	//glavnaSabirnica
+	wire<32> ADR;
+	wire<32> DATA;
+	wire READ;
+	wire WRITE;
+	wired_and WAIT;
+	wired_and INT0;
+	wired_and INT1;
+	wired_and INT2;
+	wired_and INT3;
+	wire<3> SIZE;
+	wire --IACK;
+	wire --BREQ;
+	wire --BACK;
+
+
+	// components --------------------------------------------
+	subcomponent Memorija memorija<false, 1, 65536, 8, 0>(ADR, DATA, READ, WRITE, SIZE, WAIT, INT);
+	subcomponent FRISC procesor(ADR, DATA, READ, WRITE, SIZE, WAIT, INT0, INT1, INT2, INT3, --IACK, 1, *, INT) uses memorija;
+
+	display {
+		component { x: -12; y: 68; ref: "memorija"; }
+		component { x: -206; y: -76; ref: "procesor"; }
+
+		// directRam bus
+
+
+		// glavnaSabirnica bus
+
+		rectangle {
+			x: -222; y: 130;
+			w: 100; h: 20;
+		}
+
+
+		line {x1:-28; y1:96; x2:-90; y2:-26;}
+		line {x1:38; y1:52; x2:-171; y2:140;}
+		line {x1:-156; y1:40; x2:-171; y2:140;}
+	}
+}
\ No newline at end of file
diff --git a/examples/simplified FRISC model/frisc_library.csl b/examples/simplified FRISC model/frisc_library.csl
index a4d7075..1c4560b 100644
--- a/examples/simplified FRISC model/frisc_library.csl	
+++ b/examples/simplified FRISC model/frisc_library.csl	
@@ -62,6 +62,18 @@
             }
         }
     }
+
+    @pin memDirect inOut {
+            @tooltip "pin za izravno spajanje na RAM"
+            @connection optional("COMDEL se ne može stvoriti. FRISC nije spojen na sabirnicu")
+            @display {
+                pin {
+                    x: 100; y: 42; w: 16; h:16;
+                    type: "in";
+                    orientation: "right";
+                }
+            }
+        }
 }
 
 @component Memorija memory {
@@ -181,6 +193,29 @@
             }
         }
     }
+
+    @pin memDirect inOut {
+            @tooltip "pin za spajanje na procesor"
+            @connection optional("COMDEL se ne može stvoriti. Memorija nije spojena na sabirnicu")
+            @display {
+                /*
+                pin {
+                    x: 100; y: 25;
+                    fillColor: blue;
+                    lineColor: red;
+                    fillColorConnected: white;
+                    lineColorConnected: black;
+                    side: right;
+                    size: 20;
+                }
+                */
+                pin {
+                    x: -16; y: 20; w: 16; h:16;
+                    type: "out";
+                    orientation: "left";
+                }
+            }
+        }
 }
 
 @component DMA {
@@ -305,6 +340,13 @@
     }
 }
 
+@bus directRam automatic {
+    @wires {
+        INT
+    }
+}
+
+
 @connection (FRISC.glavniPin, glavnaSabirnica) {
     @wires{ADR, DATA, READ, WRITE, SIZE, WAIT, INT0, INT1, INT2, INT3, IACK, 1, null}
 }
@@ -331,4 +373,9 @@
 @connection (DMA.glavniPin, PIOSabirnica, FRISC.glavniPin) {
     @wires{PIO_DATA, READY, STROBE}
     @wires{PIO_DATA, READY, STROBE}
+}
+
+@connection (FRISC.memDirect, directRam, Memorija.memDirect) {
+    @wires{INT}
+    @wires{INT}
 }
\ No newline at end of file
diff --git a/examples/simplified FRISC model/schema3.csl b/examples/simplified FRISC model/schema3.csl
new file mode 100644
index 0000000..9ce8028
--- /dev/null
+++ b/examples/simplified FRISC model/schema3.csl	
@@ -0,0 +1,34 @@
+@source "/home/bbr/Documents/Personal/FER/schema_editor/examples/simplified FRISC model/frisc_library.csl"
+
+@schema {
+	@instance memorija Memorija {
+		@position (-12, 68)
+		@attribute sinkroniziran false
+		@attribute brzina 1
+		@attribute kapacitet 65536
+		@attribute size 8
+		@attribute pocetnaAdresa 0
+	}
+
+	@instance procesor FRISC {
+		@position (-206, -76)
+		@attribute _memory memorija
+	}
+
+	@instance directRam directRam {
+		@position (0, 0)
+		@size 0
+	}
+
+	@instance glavnaSabirnica glavnaSabirnica {
+		@position (-222, 130)
+		@size 50
+	}
+
+	@connection (memorija.memDirect, directRam, procesor.memDirect) {
+	}
+	@connection (memorija.glavniPin, glavnaSabirnica) {
+	}
+	@connection (procesor.glavniPin, glavnaSabirnica) {
+	}
+}