2 files changed, 11 insertions, 4 deletions
diff --git a/qtmips_machine/qtmipsmachine.cpp b/qtmips_machine/qtmipsmachine.cpp
index 69deeb1..81f733b 100644
--- a/qtmips_machine/qtmipsmachine.cpp
+++ b/qtmips_machine/qtmipsmachine.cpp
@@ -33,6 +33,7 @@
  *
  ******************************************************************************/
 
+#include <QTime>
 #include "qtmipsmachine.h"
 #include "programloader.h"
 
@@ -102,8 +103,9 @@ const MachineConfig &QtMipsMachine::config() {
     return mcnf;
 }
 
-void QtMipsMachine::set_speed(unsigned val) {
-    run_t->setInterval(val);
+void QtMipsMachine::set_speed(unsigned int ips, unsigned int time_chunk) {
+    this->time_chunk = time_chunk;
+    run_t->setInterval(ips);
 }
 
 const Registers *QtMipsMachine::registers() {
@@ -174,7 +176,11 @@ void QtMipsMachine::step_internal(bool skip_break) {
     set_status(ST_BUSY);
     emit tick();
     try {
-        cr->step(skip_break);
+        QTime start_time = QTime::currentTime();
+        do {
+            cr->step(skip_break);
+        } while(time_chunk != 0 && stat == ST_BUSY &&
+                start_time.msecsTo(QTime::currentTime()) < time_chunk);
     } catch (QtMipsException &e) {
         run_t->stop();
         set_status(ST_TRAPPED);
diff --git a/qtmips_machine/qtmipsmachine.h b/qtmips_machine/qtmipsmachine.h
index 4ad39c5..2a191f0 100644
--- a/qtmips_machine/qtmipsmachine.h
+++ b/qtmips_machine/qtmipsmachine.h
@@ -57,7 +57,7 @@ public:
     ~QtMipsMachine();
 
     const MachineConfig &config();
-    void set_speed(unsigned);
+    void set_speed(unsigned int ips, unsigned int time_chunk = 0);
 
     const Registers *registers();
     const Memory *memory();
@@ -111,6 +111,7 @@ private:
     Core *cr;
 
     QTimer *run_t;
+    unsigned int time_chunk;
 
     std::uint32_t program_end;
     enum Status stat;