Sound fixed and complete. More OpCodes to implement

Desktop/Form1.cs

@@ -79,6 +79,8 @@ namespace Desktop
 
                         if (_isPaused)
                         {
+                            stopwatch.Restart();
+                            scanlineCount = 0;
                             Thread.Sleep(10);
                             continue;
                         }
@@ -174,6 +176,7 @@ namespace Desktop
 
         private void loadTAPToolStripMenuItem_Click(object sender, EventArgs e)
         {
+            _isPaused = true;
             using (OpenFileDialog ofd = new OpenFileDialog())
             {
                 ofd.Filter = "Spectrum TAP Files|*.tap";
@@ -183,9 +186,11 @@ namespace Desktop
                     _cpu._tapManager.LoadTapData(tapBytes);
                 }
             }
+            _isPaused = false;
         }
         private void openSNAToolStripMenuItem_Click(object sender, EventArgs e)
         {
+            _isPaused = true;
             using (OpenFileDialog ofd = new OpenFileDialog())
             {
                 ofd.Filter = "Snapshot Files (sna,z80)|*.sna";
@@ -195,6 +200,7 @@ namespace Desktop
                     _cpu.LoadSNA(snaBytes);
                 }
             }
+            _isPaused = false;
         }
 
         private void btnRun_Click(object sender, EventArgs e) => _isPaused = false;