diff --git a/source/Cosmos/Cosmos.Hardware/Global.cs b/source/Cosmos/Cosmos.Hardware/Global.cs
index 3a3a411b8..71cf3f286 100644
--- a/source/Cosmos/Cosmos.Hardware/Global.cs
+++ b/source/Cosmos/Cosmos.Hardware/Global.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
+using Cosmos.Kernel;
 
 namespace Cosmos.Hardware {
     public class Global {
@@ -42,7 +43,7 @@ namespace Cosmos.Hardware {
             uint xEnd = xStart + aMSec;
             Cosmos.Hardware.DebugUtil.SendNumber("PC", "Sleep", aMSec, 32);
             while (TickCount < xEnd) {
-                ;
+                CPU.Halt();
             }
             Cosmos.Hardware.DebugUtil.SendMessage("PC", "Sleeping done");
         }
diff --git a/source/Cosmos/Cosmos.Kernel.Plugs/Assemblers/Halt.cs b/source/Cosmos/Cosmos.Kernel.Plugs/Assemblers/Halt.cs
new file mode 100644
index 000000000..9342cbf77
--- /dev/null
+++ b/source/Cosmos/Cosmos.Kernel.Plugs/Assemblers/Halt.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Indy.IL2CPU.Plugs;
+using Indy.IL2CPU.Assembler;
+using Assembler = Indy.IL2CPU.Assembler.Assembler;
+using CPUAll = Indy.IL2CPU.Assembler;
+using CPUx86 = Indy.IL2CPU.Assembler.X86;
+
+namespace Cosmos.Kernel.Plugs.Assemblers
+{
+    
+    public class Halt : AssemblerMethod
+    {
+        public override void Assemble(Assembler aAssembler)
+        {
+            new CPUx86.Hlt();
+        }
+    }
+}
diff --git a/source/Cosmos/Cosmos.Kernel.Plugs/CPU.cs b/source/Cosmos/Cosmos.Kernel.Plugs/CPU.cs
index 7a3fd5b27..1eb188e97 100644
--- a/source/Cosmos/Cosmos.Kernel.Plugs/CPU.cs
+++ b/source/Cosmos/Cosmos.Kernel.Plugs/CPU.cs
@@ -73,5 +73,12 @@ namespace Cosmos.Kernel.Plugs {
             b = 0;
             a = 0;
         }
+
+        [PlugMethod(MethodAssembler = typeof(Assemblers.Halt))]
+        public static void Halt()
+        {
+
+        }
+
 	}
 }
diff --git a/source/Cosmos/Cosmos.Kernel.Plugs/Cosmos.Kernel.Plugs.csproj b/source/Cosmos/Cosmos.Kernel.Plugs/Cosmos.Kernel.Plugs.csproj
index 1d78267ed..07c554aa3 100644
--- a/source/Cosmos/Cosmos.Kernel.Plugs/Cosmos.Kernel.Plugs.csproj
+++ b/source/Cosmos/Cosmos.Kernel.Plugs/Cosmos.Kernel.Plugs.csproj
@@ -54,6 +54,7 @@
     <Compile Include="Assemblers\GetCurrentESP.cs" />
     <Compile Include="Assemblers\GetEndOfKernel.cs" />
     <Compile Include="Assemblers\GetEndOfStack.cs" />
+    <Compile Include="Assemblers\Halt.cs" />
     <Compile Include="Assemblers\IORead16.cs" />
     <Compile Include="Assemblers\IORead32.cs" />
     <Compile Include="Assemblers\IOWrite16.cs" />
diff --git a/source/Cosmos/Cosmos.Kernel/CPU.cs b/source/Cosmos/Cosmos.Kernel/CPU.cs
index 84cf92356..b519446ac 100644
--- a/source/Cosmos/Cosmos.Kernel/CPU.cs
+++ b/source/Cosmos/Cosmos.Kernel/CPU.cs
@@ -114,5 +114,11 @@ namespace Cosmos.Kernel {
             b = 0;
             a = 0;
         }
+
+        //Plugged
+        public static void Halt()
+        {
+            
+        }
 	}
 }
\ No newline at end of file
diff --git a/source/Indy.IL2CPU.Assembler.X86/Hlt.cs b/source/Indy.IL2CPU.Assembler.X86/Hlt.cs
new file mode 100644
index 000000000..0fb4044dd
--- /dev/null
+++ b/source/Indy.IL2CPU.Assembler.X86/Hlt.cs
@@ -0,0 +1,10 @@
+using System;
+using System.Linq;
+
+namespace Indy.IL2CPU.Assembler.X86
+{
+    [OpCode(0xF4, "hlt")]
+    public class Hlt : Instruction
+    {
+    }
+}
\ No newline at end of file
diff --git a/source/Indy.IL2CPU.Assembler.X86/Indy.IL2CPU.Assembler.X86.csproj b/source/Indy.IL2CPU.Assembler.X86/Indy.IL2CPU.Assembler.X86.csproj
index bca2329cd..d8a180851 100644
--- a/source/Indy.IL2CPU.Assembler.X86/Indy.IL2CPU.Assembler.X86.csproj
+++ b/source/Indy.IL2CPU.Assembler.X86/Indy.IL2CPU.Assembler.X86.csproj
@@ -64,6 +64,7 @@
     <Compile Include="ConditionalMove.cs" />
     <Compile Include="Condition.cs" />
     <Compile Include="CpuId.cs" />
+    <Compile Include="Hlt.cs" />
     <Compile Include="Popfd.cs" />
     <Compile Include="RotateThroughCarryRight.cs" />
     <Compile Include="DebugStub.cs" />