add a PauseChanged event to mainform, have the debugger subscribe to it and refresh instead of refreshing every frame, add a refresh menu item with F5 hotkey just in case

BizHawk.Client.EmuHawk/MainForm.cs

@@ -503,6 +503,41 @@ namespace BizHawk.Client.EmuHawk
 
 		#endregion`
 
+		#region Pause
+
+		private bool _emulatorPaused;
+		public bool EmulatorPaused
+		{
+			get
+			{
+				return _emulatorPaused;
+			}
+
+			private set
+			{
+				_emulatorPaused = value;
+				if (OnPauseChanged != null)
+				{
+					OnPauseChanged(this, new PauseChangedEventArgs(_emulatorPaused));
+				}
+			}
+		}
+
+		public delegate void PauseChangedEventHandler(object sender, PauseChangedEventArgs e);
+		public event PauseChangedEventHandler OnPauseChanged;
+
+		public class PauseChangedEventArgs : EventArgs
+		{
+			public PauseChangedEventArgs(bool paused)
+			{
+				Paused = paused;
+			}
+
+			public bool Paused { get; private set; }
+		}
+
+		#endregion
+
 		#region Properties
 
 		public string CurrentlyOpenRom;
@@ -513,7 +548,6 @@ namespace BizHawk.Client.EmuHawk
 		public bool TurboFastForward = false;
 		public bool RestoreReadWriteOnStop = false;
 		public bool UpdateFrame = false;
-		public bool EmulatorPaused { get; private set; }
 
 		private int? _pauseOnFrame;
 		public int? PauseOnFrame // If set, upon completion of this frame, the client wil pause

BizHawk.Client.EmuHawk/tools/Debugger/GenericDebugger.Designer.cs

@@ -54,6 +54,8 @@
 			this.SeekToBtn = new System.Windows.Forms.Button();
 			this.SeekToBox = new BizHawk.Client.EmuHawk.HexTextBox();
 			this.CancelSeekBtn = new System.Windows.Forms.Button();
+			this.toolStripSeparator1 = new System.Windows.Forms.ToolStripSeparator();
+			this.RefreshMenuItem = new System.Windows.Forms.ToolStripMenuItem();
 			this.menuStrip1.SuspendLayout();
 			this.RegistersGroupBox.SuspendLayout();
 			this.BreakpointsGroupBox.SuspendLayout();
@@ -93,7 +95,9 @@
 			this.DebugSubMenu.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
             this.StepIntoMenuItem,
             this.StepOverMenuItem,
-            this.StepOutMenuItem});
+            this.StepOutMenuItem,
+            this.toolStripSeparator1,
+            this.RefreshMenuItem});
 			this.DebugSubMenu.Name = "DebugSubMenu";
 			this.DebugSubMenu.Size = new System.Drawing.Size(54, 20);
 			this.DebugSubMenu.Text = "&Debug";
@@ -315,6 +319,19 @@
 			this.CancelSeekBtn.UseVisualStyleBackColor = true;
 			this.CancelSeekBtn.Click += new System.EventHandler(this.CancelSeekBtn_Click);
 			// 
+			// toolStripSeparator1
+			// 
+			this.toolStripSeparator1.Name = "toolStripSeparator1";
+			this.toolStripSeparator1.Size = new System.Drawing.Size(174, 6);
+			// 
+			// RefreshMenuItem
+			// 
+			this.RefreshMenuItem.Name = "RefreshMenuItem";
+			this.RefreshMenuItem.ShortcutKeys = System.Windows.Forms.Keys.F5;
+			this.RefreshMenuItem.Size = new System.Drawing.Size(177, 22);
+			this.RefreshMenuItem.Text = "Refresh";
+			this.RefreshMenuItem.Click += new System.EventHandler(this.RefreshMenuItem_Click);
+			// 
 			// GenericDebugger
 			// 
 			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
@@ -374,5 +391,7 @@
 		private HexTextBox SeekToBox;
 		private System.Windows.Forms.Button CancelSeekBtn;
 		private System.Windows.Forms.Button ToPCBtn;
+		private System.Windows.Forms.ToolStripSeparator toolStripSeparator1;
+		private System.Windows.Forms.ToolStripMenuItem RefreshMenuItem;
 	}
 }

BizHawk.Client.EmuHawk/tools/Debugger/GenericDebugger.Disassembler.cs

@@ -189,5 +189,10 @@ namespace BizHawk.Client.EmuHawk
 				Clipboard.SetDataObject(blob.ToString());
 			}
 		}
+
+		private void OnPauseChanged(object sender, MainForm.PauseChangedEventArgs e)
+		{
+			FullUpdate();
+		}
 	}
 }

BizHawk.Client.EmuHawk/tools/Debugger/GenericDebugger.IToolForm.cs

@@ -136,9 +136,7 @@ namespace BizHawk.Client.EmuHawk
 
 		public void UpdateValues()
 		{
-			// TODO: probably none of this
-			RegisterPanel.UpdateValues();
-			UpdateDisassembler();
+			// Nothing to do
 		}
 
 		private void FullUpdate()

BizHawk.Client.EmuHawk/tools/Debugger/GenericDebugger.cs

@@ -34,6 +34,7 @@ namespace BizHawk.Client.EmuHawk
 		private void EngageDebugger()
 		{
 			DisassemblyLines.Clear();
+			GlobalWin.MainForm.OnPauseChanged += OnPauseChanged;
 			CancelSeekBtn.Enabled = false;
 			if (CanDisassemble)
 			{
@@ -147,6 +148,7 @@ namespace BizHawk.Client.EmuHawk
 		private void DisengageDebugger()
 		{
 			BreakPointControl1.Shutdown();
+			GlobalWin.MainForm.OnPauseChanged -= OnPauseChanged;
 		}
 
 		public void DisableRegisterBox()
@@ -289,5 +291,10 @@ namespace BizHawk.Client.EmuHawk
 		{
 			UpdateDisassembler();
 		}
+
+		private void RefreshMenuItem_Click(object sender, EventArgs e)
+		{
+			FullUpdate();
+		}
 	}
 }