diff --git a/BizHawk.MultiClient/Config.cs b/BizHawk.MultiClient/Config.cs
index dbc1d842c9..27a66e52cf 100644
--- a/BizHawk.MultiClient/Config.cs
+++ b/BizHawk.MultiClient/Config.cs
@@ -209,8 +209,9 @@ namespace BizHawk.MultiClient
 		public int RamWatchDiffIndex = 4;
 		public int RamWatchDomainIndex = 5;
 		public int RamWatchNotesIndex = 6;
-		
+
 		public int RamWatchPrev_Type = 1;
+		public Watch.PreviousType RamWatchDefinePrevious = Watch.PreviousType.LastFrame;
 
 		// RamSearch Settings
 		public bool RamSearchSaveWindowPosition = true;
diff --git a/BizHawk.MultiClient/tools/Watch/NewRamWatch.Designer.cs b/BizHawk.MultiClient/tools/Watch/NewRamWatch.Designer.cs
index a3360f5d1b..8f0dcbfdbe 100644
--- a/BizHawk.MultiClient/tools/Watch/NewRamWatch.Designer.cs
+++ b/BizHawk.MultiClient/tools/Watch/NewRamWatch.Designer.cs
@@ -96,6 +96,7 @@
 			this.DiffColumn = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
 			this.DomainColumn = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
 			this.NotesColumn = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
+			this.originalToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
 			this.toolStrip1.SuspendLayout();
 			this.menuStrip1.SuspendLayout();
 			this.SuspendLayout();
@@ -604,23 +605,26 @@
 			// 
 			this.definePreviousValueAsToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
             this.previousFrameToolStripMenuItem,
-            this.lastChangeToolStripMenuItem});
-			this.definePreviousValueAsToolStripMenuItem.Enabled = false;
+            this.lastChangeToolStripMenuItem,
+            this.originalToolStripMenuItem});
 			this.definePreviousValueAsToolStripMenuItem.Name = "definePreviousValueAsToolStripMenuItem";
 			this.definePreviousValueAsToolStripMenuItem.Size = new System.Drawing.Size(217, 22);
 			this.definePreviousValueAsToolStripMenuItem.Text = "Define Previous Value As";
+			this.definePreviousValueAsToolStripMenuItem.DropDownOpened += new System.EventHandler(this.definePreviousValueAsToolStripMenuItem_DropDownOpened);
 			// 
 			// previousFrameToolStripMenuItem
 			// 
 			this.previousFrameToolStripMenuItem.Name = "previousFrameToolStripMenuItem";
 			this.previousFrameToolStripMenuItem.Size = new System.Drawing.Size(155, 22);
 			this.previousFrameToolStripMenuItem.Text = "Previous Frame";
+			this.previousFrameToolStripMenuItem.Click += new System.EventHandler(this.previousFrameToolStripMenuItem_Click);
 			// 
 			// lastChangeToolStripMenuItem
 			// 
 			this.lastChangeToolStripMenuItem.Name = "lastChangeToolStripMenuItem";
 			this.lastChangeToolStripMenuItem.Size = new System.Drawing.Size(155, 22);
 			this.lastChangeToolStripMenuItem.Text = "Last Change";
+			this.lastChangeToolStripMenuItem.Click += new System.EventHandler(this.lastChangeToolStripMenuItem_Click);
 			// 
 			// displayWatchesOnScreenToolStripMenuItem
 			// 
@@ -721,6 +725,13 @@
 			this.NotesColumn.Text = "Notes";
 			this.NotesColumn.Width = 128;
 			// 
+			// originalToolStripMenuItem
+			// 
+			this.originalToolStripMenuItem.Name = "originalToolStripMenuItem";
+			this.originalToolStripMenuItem.Size = new System.Drawing.Size(155, 22);
+			this.originalToolStripMenuItem.Text = "&Original";
+			this.originalToolStripMenuItem.Click += new System.EventHandler(this.originalToolStripMenuItem_Click);
+			// 
 			// NewRamWatch
 			// 
 			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
@@ -814,5 +825,6 @@
         private System.Windows.Forms.Label MessageLabel;
         private System.Windows.Forms.Label MemDomainLabel;
 		private System.Windows.Forms.ToolStripSeparator toolStripSeparator2;
+		private System.Windows.Forms.ToolStripMenuItem originalToolStripMenuItem;
 	}
 }
\ No newline at end of file
diff --git a/BizHawk.MultiClient/tools/Watch/NewRamWatch.cs b/BizHawk.MultiClient/tools/Watch/NewRamWatch.cs
index e01847bc10..df5f53ce37 100644
--- a/BizHawk.MultiClient/tools/Watch/NewRamWatch.cs
+++ b/BizHawk.MultiClient/tools/Watch/NewRamWatch.cs
@@ -863,6 +863,42 @@ namespace BizHawk.MultiClient
 			saveWindowPositionToolStripMenuItem.Checked = Global.Config.RamWatchSaveWindowPosition;
 		}
 
+		private void definePreviousValueAsToolStripMenuItem_DropDownOpened(object sender, EventArgs e)
+		{
+			lastChangeToolStripMenuItem.Checked = false;
+			previousFrameToolStripMenuItem.Checked = false;
+			originalToolStripMenuItem.Checked = false;
+
+			switch (Global.Config.RamWatchDefinePrevious)
+			{
+				default:
+				case Watch.PreviousType.LastFrame:
+					previousFrameToolStripMenuItem.Checked = true;
+					break;
+				case Watch.PreviousType.LastChange:
+					lastChangeToolStripMenuItem.Checked = true;
+					break;
+				case Watch.PreviousType.OriginalValue:
+					originalToolStripMenuItem.Checked = true;
+					break;
+			}
+		}
+
+		private void previousFrameToolStripMenuItem_Click(object sender, EventArgs e)
+		{
+			Global.Config.RamWatchDefinePrevious = Watch.PreviousType.LastFrame;
+		}
+
+		private void lastChangeToolStripMenuItem_Click(object sender, EventArgs e)
+		{
+			Global.Config.RamWatchDefinePrevious = Watch.PreviousType.LastChange;
+		}
+
+		private void originalToolStripMenuItem_Click(object sender, EventArgs e)
+		{
+			Global.Config.RamWatchDefinePrevious = Watch.PreviousType.OriginalValue;
+		}
+
 		private void displayWatchesOnScreenToolStripMenuItem_Click(object sender, EventArgs e)
 		{
 			Global.Config.DisplayRamWatch ^= true;
diff --git a/BizHawk.MultiClient/tools/Watch/Watch.cs b/BizHawk.MultiClient/tools/Watch/Watch.cs
index c37f9e75ab..dec2b865ac 100644
--- a/BizHawk.MultiClient/tools/Watch/Watch.cs
+++ b/BizHawk.MultiClient/tools/Watch/Watch.cs
@@ -13,6 +13,7 @@ namespace BizHawk.MultiClient
 	{
 		public enum WatchSize { Byte = 1, Word = 2, DWord = 4, Separator = 0 };
 		public enum DisplayType { Separator, Signed, Unsigned, Hex, Binary, FixedPoint_12_4, FixedPoint_20_12, Float };
+		public enum PreviousType { OriginalValue = 0, LastSearch = 1, LastFrame = 2, LastChange = 3 };
 
 		public static string DisplayTypeToString(DisplayType type)
 		{
@@ -415,13 +416,31 @@ namespace BizHawk.MultiClient
 
 		public string Notes { get; set; }
 
-		public void Update() //TODO: different notions of previous
+		public void Update()
 		{
-			_previous = _value;
-			_value = GetByte();
-			if (_value != Previous)
+			switch (Global.Config.RamWatchDefinePrevious)
 			{
-				ChangeCount++;
+				case PreviousType.LastSearch: //TODO
+				case PreviousType.OriginalValue:
+					/*Do Nothing*/
+					break;
+				case PreviousType.LastChange:
+					var temp = _value;
+					_value = GetByte();
+					if (_value != temp)
+					{
+						_previous = _value;
+						ChangeCount++;
+					}
+					break;
+				case PreviousType.LastFrame:
+					_previous = _value;
+					_value = GetByte();
+					if (_value != Previous)
+					{
+						ChangeCount++;
+					}
+					break;
 			}
 		}
 	}
@@ -515,13 +534,32 @@ namespace BizHawk.MultiClient
 
 		public string Notes { get; set; }
 
-		public void Update() //TODO: different notions of previous
+		public void Update()
 		{
-			_previous = _value;
-			_value = GetWord();
-			if (_value != Previous)
+			switch (Global.Config.RamWatchDefinePrevious)
 			{
-				ChangeCount++;
+				case PreviousType.LastSearch: //TODO
+				case PreviousType.OriginalValue:
+					/*Do Nothing*/
+					break;
+				case PreviousType.LastChange:
+					var temp = _value;
+					_value = GetWord();
+
+					if (_value != temp)
+					{
+						_previous = temp;
+						ChangeCount++;
+					}
+					break;
+				case PreviousType.LastFrame:
+					_previous = _value;
+					_value = GetWord();
+					if (_value != Previous)
+					{
+						ChangeCount++;
+					}
+					break;
 			}
 		}
 	}
@@ -616,13 +654,31 @@ namespace BizHawk.MultiClient
 
 		public string Notes { get; set; }
 
-		public void Update() //TODO: different notions of previous
+		public void Update()
 		{
-			_previous = _value;
-			_value = GetDWord();
-			if (_value != Previous)
+			switch (Global.Config.RamWatchDefinePrevious)
 			{
-				ChangeCount++;
+				case PreviousType.LastSearch: //TODO
+				case PreviousType.OriginalValue:
+					/*Do Nothing*/
+					break;
+				case PreviousType.LastChange:
+					var temp = _value;
+					_value = GetDWord();
+					if (_value != temp)
+					{
+						_previous = _value;
+						ChangeCount++;
+					}
+					break;
+				case PreviousType.LastFrame:
+					_previous = _value;
+					_value = GetDWord();
+					if (_value != Previous)
+					{
+						ChangeCount++;
+					}
+					break;
 			}
 		}
 	}