diff --git a/src/boards/board_Blue_Pill.cc b/src/boards/board_Blue_Pill.cc
index 2f388916..97b7352e 100644
--- a/src/boards/board_Blue_Pill.cc
+++ b/src/boards/board_Blue_Pill.cc
@@ -260,6 +260,7 @@ cboard_Blue_Pill::cboard_Blue_Pill(void) {
     master_uart[2].rx_pin = 0;
 
     bitbang_pwm_init(&pwm_out, this, 20);
+    bitbang_out_init(&rmt_out, this, 0);
 
     PICSimLab.UpdateGUI(MIPS, GT_COMBO, GA_ADD, (void*)"Qemu CPU MIPS");
     buffer[0] = ',';
@@ -278,6 +279,10 @@ cboard_Blue_Pill::~cboard_Blue_Pill(void) {
 // Reset board status
 
 void cboard_Blue_Pill::Reset(void) {
+    if (qemu_started != 1) {
+        return;
+    }
+
     MReset(1);
 
     PICSimLab.UpdateStatus(PS_SERIAL, "Serial: " + std::string(SERIALDEVICE));
diff --git a/src/boards/board_STM32_H103.cc b/src/boards/board_STM32_H103.cc
index 262c835c..f3a958d2 100644
--- a/src/boards/board_STM32_H103.cc
+++ b/src/boards/board_STM32_H103.cc
@@ -283,6 +283,7 @@ cboard_STM32_H103::cboard_STM32_H103(void) {
     master_uart[2].rx_pin = 0;
 
     bitbang_pwm_init(&pwm_out, this, 20);
+    bitbang_out_init(&rmt_out, this, 0);
 
     PICSimLab.UpdateGUI(MIPS, GT_COMBO, GA_ADD, (void*)"Qemu CPU MIPS");
     buffer[0] = ',';
diff --git a/src/picsimlab1.cc b/src/picsimlab1.cc
index 2af44e01..fc599ca9 100644
--- a/src/picsimlab1.cc
+++ b/src/picsimlab1.cc
@@ -694,6 +694,11 @@ void CPWindow1::_EvOnCreate(CControl* control) {
     PICSimLab.OnWindowCmd = &CPWindow1::OnWindowCmd;
     PICSimLab.OnSystemCmd = &CPWindow1::OnSystemCmd;
 
+    SpareParts.OnCanvasCmd = &CPWindow5::OnCanvasCmd;
+    SpareParts.OnWindowCmd = &CPWindow5::OnWindowCmd;
+
+    Oscilloscope.OnWindowCmd = &CPWindow4::OnWindowCmd;
+
     PICSimLab.Init();
 
     // board menu
diff --git a/src/picsimlab4.cc b/src/picsimlab4.cc
index 7adfdf89..21b721eb 100644
--- a/src/picsimlab4.cc
+++ b/src/picsimlab4.cc
@@ -360,7 +360,6 @@ void CPWindow4::_EvOnCreate(CControl* control) {
                   ? ("PICSimLab[" + std::to_string(PICSimLab.GetInstanceNumber()) + "] - ")
                   : ("PICSimLab - ")) +
              "Oscilloscope");
-    Oscilloscope.OnWindowCmd = &CPWindow4::OnWindowCmd;
 }
 
 void CPWindow4::_EvOnShow(CControl* control) {
diff --git a/src/picsimlab5.cc b/src/picsimlab5.cc
index cf27edd8..90eabbf5 100644
--- a/src/picsimlab5.cc
+++ b/src/picsimlab5.cc
@@ -73,9 +73,6 @@ void CPWindow5::menu1_EvMenuActive(CControl* control) {
 }
 
 void CPWindow5::_EvOnCreate(CControl* control) {
-    SpareParts.OnCanvasCmd = &CPWindow5::OnCanvasCmd;
-    SpareParts.OnWindowCmd = &CPWindow5::OnWindowCmd;
-
     if (SpareParts.GetLoadConfigFile().length() > 0)
         SpareParts.LoadConfig(SpareParts.GetLoadConfigFile());