From e6ca4b4568e311b47239bfe83de15ed9e91c57b9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= <cynerd@email.cz>
Date: Fri, 15 Dec 2017 22:45:28 +0100
Subject: Implement few initial graphic elements

---
 qtmips_machine/qtmipsmachine.cpp | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'qtmips_machine/qtmipsmachine.cpp')

diff --git a/qtmips_machine/qtmipsmachine.cpp b/qtmips_machine/qtmipsmachine.cpp
index 7b44a7b..191a7c7 100644
--- a/qtmips_machine/qtmipsmachine.cpp
+++ b/qtmips_machine/qtmipsmachine.cpp
@@ -9,6 +9,7 @@ QtMipsMachine::QtMipsMachine(const MachineConfig &cc) {
 
     program.to_memory(mem);
     program_end = program.end();
+    program_ended = false;
 
     MemoryAccess *coremem;
     switch (cc.cache()) {
@@ -35,6 +36,8 @@ QtMipsMachine::QtMipsMachine(const MachineConfig &cc) {
 
 void QtMipsMachine::set_speed(unsigned val) {
     run_speed = val;
+    if (run_t->isActive())
+        play();
 }
 
 const Registers *QtMipsMachine::registers() {
@@ -54,19 +57,31 @@ const Core *QtMipsMachine::core() {
 }
 
 void QtMipsMachine::play() {
+    if (program_ended)
+        return;
     run_t->start(run_speed);
 }
 
 void QtMipsMachine::pause() {
+    if (program_ended)
+        return;
     run_t->stop();
 }
 
 void QtMipsMachine::step() {
+    if (program_ended) // Ignore if program ended
+        return;
+    emit tick();
     cr->step();
-    if (regs->read_pc() >= program_end)
+    if (regs->read_pc() >= program_end) {
+        program_ended = true;
+        run_t->stop();
         emit program_exit();
+    }
 }
 
 void QtMipsMachine::restart() {
+    if (!program_ended)
+        run_t->stop(); // Stop timer if program is still running
     // TODO
 }
-- 
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