2 files changed, 21 insertions, 0 deletions
diff --git a/qtmips_gui/coreview.cpp b/qtmips_gui/coreview.cpp
index b2d9b7d..d91def6 100644
--- a/qtmips_gui/coreview.cpp
+++ b/qtmips_gui/coreview.cpp
@@ -96,6 +96,16 @@ CoreViewScene::CoreViewScene(machine::QtMipsMachine *machine) : QGraphicsScene()
     con = new_bus(wb.mem_or_reg->connector_out(), regs->connector_write());
     con->setAxes({CON_AXIS_Y(710), CON_AXIS_X(510), CON_AXIS_Y(172)});
 
+    // Control unit labels
+    new_label("RegWrite", 300, 99);
+    new_label("MemToReg", 300, 106);
+    new_label("MemWrite", 300, 112);
+    new_label("MemRead", 300, 119);
+    new_label("AluCtrl", 300, 125);
+    new_label("AluSrc", 300, 132);
+    new_label("RegDest", 300, 138);
+    new_label("Branch", 300, 145);
+
     // Decode stage values
     NEW_V(200, 200); // Instruction
     connect(machine->core(), SIGNAL(decode_instruction_value(std::uint32_t)), val, SLOT(value_update(std::uint32_t)));
@@ -160,6 +170,16 @@ coreview::Signal *CoreViewScene::new_signal(const coreview::Connector *a, const
     return c;
 }
 
+QGraphicsSimpleTextItem *CoreViewScene::new_label(const QString &str, qreal x, qreal y) {
+    QGraphicsSimpleTextItem *i= new QGraphicsSimpleTextItem(str);
+    QFont f;
+    f.setPointSize(5);
+    i->setFont(f);
+    addItem(i);
+    i->setPos(x, y);
+    return i;
+}
+
 CoreViewSceneSimple::CoreViewSceneSimple(machine::QtMipsMachine *machine) : CoreViewScene(machine) {
     NEW_I(instr_prim, 230, 60, instruction_fetched(const machine::Instruction&));
     if (machine->config().delay_slot()) {
diff --git a/qtmips_gui/coreview.h b/qtmips_gui/coreview.h
index e4885d8..7197134 100644
--- a/qtmips_gui/coreview.h
+++ b/qtmips_gui/coreview.h
@@ -69,6 +69,7 @@ protected:
     coreview::Connection *new_connection(const coreview::Connector*, const coreview::Connector*);
     coreview::Bus *new_bus(const coreview::Connector*, const coreview::Connector*, unsigned width = 4);
     coreview::Signal *new_signal(const coreview::Connector*, const coreview::Connector*);
+    QGraphicsSimpleTextItem *new_label(const QString &str, qreal x, qreal y);
     coreview::Connection *pc2pc_latch;
     coreview::Connection *pc_latch2pc_joint, *pc_joint2pc_adder, *pc_joint2mem;
     coreview::Connection *pc_multiplexer2pc;