diff --git a/BizHawk.MultiClient/BizHawk.MultiClient.csproj b/BizHawk.MultiClient/BizHawk.MultiClient.csproj
index f600725212..8923d0c560 100644
--- a/BizHawk.MultiClient/BizHawk.MultiClient.csproj
+++ b/BizHawk.MultiClient/BizHawk.MultiClient.csproj
@@ -319,6 +319,7 @@
     <Compile Include="tools\Cheats.Designer.cs">
       <DependentUpon>Cheats.cs</DependentUpon>
     </Compile>
+    <Compile Include="tools\MemoryPulse.cs" />
     <Compile Include="tools\VirtualPad.cs">
       <SubType>Component</SubType>
     </Compile>
diff --git a/BizHawk.MultiClient/MainForm.cs b/BizHawk.MultiClient/MainForm.cs
index 163a331d46..a5ed0a9a31 100644
--- a/BizHawk.MultiClient/MainForm.cs
+++ b/BizHawk.MultiClient/MainForm.cs
@@ -12,6 +12,7 @@ using BizHawk.Emulation.Consoles.TurboGrafx;
 using BizHawk.Emulation.Consoles.Calculator;
 using BizHawk.Emulation.Consoles.Gameboy;
 using BizHawk.Emulation.Consoles.Nintendo;
+using BizHawk.MultiClient.tools;
 
 namespace BizHawk.MultiClient
 {
@@ -1486,7 +1487,9 @@ namespace BizHawk.MultiClient
 				//}
 
 				//=======================================
+                MemoryPulse.Pulse();
 				Global.Emulator.FrameAdvance(!throttle.skipnextframe);
+                MemoryPulse.Pulse();
 				//=======================================
 
 				if (CurrAviWriter != null)
@@ -1938,9 +1941,10 @@ namespace BizHawk.MultiClient
 
 		private void CloseROM()
 		{
-			CloseGame();
+            CloseGame();
 			Global.Emulator = new NullEmulator();
 			Global.Game = new NullGame();
+            MemoryPulse.Clear();
 			RamSearch1.Restart();
 			RamWatch1.Restart();
 			HexEditor1.Restart();
diff --git a/BizHawk.MultiClient/tools/Cheat.cs b/BizHawk.MultiClient/tools/Cheat.cs
index ddb2f453fe..308136b5c7 100644
--- a/BizHawk.MultiClient/tools/Cheat.cs
+++ b/BizHawk.MultiClient/tools/Cheat.cs
@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
+using BizHawk.MultiClient.tools;
 
 namespace BizHawk.MultiClient
 {
@@ -44,13 +41,13 @@ namespace BizHawk.MultiClient
 		public void Enable()
 		{
 			enabled = true;
-			//domain.SetFreeze(address, new MemoryDomain.FreezeData(MemoryDomain.FreezeData.Flag.Frozen, value));
+            MemoryPulse.Add(domain, address, value);
 		}
 
 		public void Disable()
 		{
 			enabled = false;
-		    //domain.ClearFreeze(address);
+		    MemoryPulse.Remove(domain, address);
 		}
 
 		public bool IsEnabled()
diff --git a/BizHawk.MultiClient/tools/Cheats.cs b/BizHawk.MultiClient/tools/Cheats.cs
index 2cb2202f49..d35a6a0d2a 100644
--- a/BizHawk.MultiClient/tools/Cheats.cs
+++ b/BizHawk.MultiClient/tools/Cheats.cs
@@ -157,10 +157,6 @@ namespace BizHawk.MultiClient
 				default:
 					break;
 				case "GB":
-				case "SMS":
-				case "SG":
-				case "GG":
-				case "PCE":
 					AddCheatGroup.Enabled = false;
 					CheatListView.Enabled = false;
 					MessageLabel.Text = Global.Emulator.SystemId + " not supported.";
diff --git a/BizHawk.MultiClient/tools/MemoryPulse.cs b/BizHawk.MultiClient/tools/MemoryPulse.cs
new file mode 100644
index 0000000000..e5c882f6ac
--- /dev/null
+++ b/BizHawk.MultiClient/tools/MemoryPulse.cs
@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+
+namespace BizHawk.MultiClient.tools
+{
+    public static class MemoryPulse
+    {
+        public class MemoryPulseEntry
+        {
+            public int address;
+            public byte value;
+            public MemoryDomain domain;
+        }
+
+        private static List<MemoryPulseEntry> entries = new List<MemoryPulseEntry>();
+
+        public static void Pulse()
+        {
+            foreach (var entry in entries)
+            {
+                entry.domain.PokeByte(entry.address, entry.value);
+            }
+        }
+
+        public static void Add(MemoryDomain domain, int address, byte value)
+        {
+            entries.RemoveAll(o => o.domain == domain && o.address == address);
+
+            var entry = new MemoryPulseEntry {address = address, value = value, domain = domain};
+            entries.Add(entry);
+        }
+
+        public static MemoryPulseEntry Query(MemoryDomain domain, int address)
+        {
+            return entries.Find(o => o.domain == domain && o.address == address);
+        }
+
+        public static void Remove(MemoryDomain domain, int address)
+        {
+            entries.RemoveAll(o => o.domain == domain && o.address == address);
+        }
+
+        public static IList<MemoryPulseEntry> GetEntries()
+        {
+            return entries.AsReadOnly();
+        }
+
+        public static void Clear()
+        {
+            entries.Clear();
+        }
+    }
+}