Index: Core/ADC/X86/APM.cs
===================================================================
--- Core/ADC/X86/APM.cs	(revision 0)
+++ Core/ADC/X86/APM.cs	(revision 0)
@@ -0,0 +1,124 @@
+//
+// (C) 2006-2008 The SharpOS Project Team (http://www.sharpos.org)
+//
+// Authors:
+//	Shevchenko Taras aka airstep <back.neomind@gmail.com>
+//
+// Licensed under the terms of the GNU GPL v3,
+//  with Classpath Linking Exception for Libraries
+//
+
+using System;
+using SharpOS.AOT;
+using AOTAttr = SharpOS.AOT.Attributes;
+using SharpOS.AOT.X86;
+
+namespace SharpOS.Kernel.ADC.X86
+{
+    public unsafe class APM
+    {
+        public static bool IsInstalled()
+        {
+            UInt32 PMStack = SwitchToRealMode();
+
+            //Asm.MOV(R16.AX, 0x5300);
+            //Asm.XOR(R16.BX, R16.BX);
+            //Asm.XOR(R16.CX, R16.CX);
+            //Asm.INT(0x15);
+
+            //SwitchToProtectedMode(PMStack);
+
+            return true;
+        }
+
+
+        private static void SwitchToProtectedMode(uint PMStack)
+        {
+            UInt32 CR0_PE_ON = 0x1;
+            //ushort PROT_MODE_CSEG = 0x8; 
+            UInt16 PROT_MODE_DSEG = 0x10;
+            UInt32 STACKOFF = (0x2000 - 0x10);
+
+            Asm.LGDT(new SharpOS.AOT.X86.Memory("GDTPointer"));
+
+            Asm.MOV(R32.EAX, CR.CR0);
+            Asm.OR(R32.EAX, CR0_PE_ON);
+            Asm.MOV(CR.CR0, R32.EAX);
+
+            Asm.JMP(0x8, "protcseg");
+            
+            Asm.LABEL("protcseg");
+            Asm.MOV(R16.AX, PROT_MODE_DSEG);
+            Asm.MOV(Seg.DS, R16.AX);
+            Asm.MOV(Seg.ES, R16.AX);
+            Asm.MOV(Seg.FS, R16.AX);
+            Asm.MOV(Seg.GS, R16.AX);
+            Asm.MOV(Seg.SS, R16.AX);
+
+            Asm.MOV(R32.EAX, R32.ESP);
+            Asm.MOV(&STACKOFF, R32.EAX);
+
+            Asm.MOV(R32.EAX, PMStack);
+            Asm.MOV(R32.ESP, R32.EAX);
+            Asm.MOV(R32.EBP, R32.EAX);
+
+            Asm.MOV(R32.EAX, STACKOFF);
+            Asm.MOV(R32.ESP, R32.EAX);
+            Asm.XOR(R32.EAX, R32.EAX);
+
+            Asm.RET();
+        }
+
+        private static uint SwitchToRealMode()
+        {
+            UInt32 CR0_PE_OFF = 0xfffffffe;
+            UInt32 STACKOFF = 0x1FF0; //(0x2000 - 0x10);
+            UInt16 PSEUDO_RM_DSEG = 0x20;
+            //ushort PSEUDO_RM_CSEG = 0x18;
+            UInt32 PMStack = 0;
+
+            Asm.LGDT(new SharpOS.AOT.X86.Memory("GDTPointer"));
+
+            Asm.MOV(R32.EAX, R32.ESP);
+            Asm.MOV(&PMStack, R32.EAX);
+
+            Asm.MOV(R32.EAX, R32.ESP);
+            Asm.MOV(&STACKOFF, R32.EAX);
+
+            Asm.MOV(R32.EAX, STACKOFF);
+            Asm.MOV(R32.ESP, R32.EAX);
+            Asm.MOV(R32.EBP, R32.EAX);
+
+            //Asm.MOV(R16.AX, PSEUDO_RM_DSEG);
+            //Asm.MOV(Seg.DS, R16.AX);
+            //Asm.MOV(Seg.ES, R16.AX);
+            //Asm.MOV(Seg.FS, R16.AX);
+            //Asm.MOV(Seg.GS, R16.AX);
+            //Asm.MOV(Seg.SS, R16.AX);
+
+            //Asm.JMP(0x18, "tmpcseg");
+
+            //Asm.LABEL("tmpcseg");
+
+            Asm.MOV(R32.EAX, CR.CR0);
+            Asm.AND(R32.EAX, CR0_PE_OFF);
+            Asm.MOV(CR.CR0, R32.EAX);
+            
+            Asm.JMP(0, "realcseg");
+
+            Asm.LABEL("realcseg");
+            Asm.XOR(R32.EAX, R32.EAX);
+            Asm.MOV(Seg.DS, R16.AX);
+            Asm.MOV(Seg.ES, R16.AX);
+            Asm.MOV(Seg.FS, R16.AX);
+            Asm.MOV(Seg.GS, R16.AX);
+            Asm.MOV(Seg.SS, R16.AX);
+
+            Asm.STI();
+
+            Asm.RET();
+
+            return PMStack;
+        }
+    }
+}
Index: Core/ADC/X86/BootControl.cs
===================================================================
--- Core/ADC/X86/BootControl.cs	(revision 1018)
+++ Core/ADC/X86/BootControl.cs	(working copy)
@@ -30,13 +30,11 @@
 		/// </summary>
 		public static void PowerOff ()
 		{
-			// TODO: turn off system here..
-
 			// Disable interrupts
-			Asm.CLI ();
-
-			// Halt the system
-			Asm.HLT ();
+            Asm.CLI();
+            APM.IsInstalled();
+ 			// Halt the system
+            //Asm.HLT ();
 		}
 
 		/// <summary>
Index: Core/EntryModule.cs
===================================================================
--- Core/EntryModule.cs	(revision 1018)
+++ Core/EntryModule.cs	(working copy)
@@ -157,18 +157,18 @@
 			TextMode.RestoreAttributes ();
 
 #if KERNEL_TESTS
-			// Testcases
-			Serial.COM1.WriteLine ("Failed AOT Tests:");
-			SharpOS.Kernel.Tests.Wrapper.Run ();
-			Serial.COM1.WriteLine ();
-			Serial.COM1.WriteLine ("Kernel Tests:");
-			MemoryManager.__RunTests ();
-			ByteString.__RunTests ();
-			StringBuilder.__RunTests ();
-			CString8.__RunTests ();
-			PString8.__RunTests ();
-			InternalSystem.String.__RunTests ();
-			Runtime.__RunTests ();
+            // Testcases
+            Serial.COM1.WriteLine("Failed AOT Tests:");
+            SharpOS.Kernel.Tests.Wrapper.Run();
+            Serial.COM1.WriteLine();
+            Serial.COM1.WriteLine("Kernel Tests:");
+            MemoryManager.__RunTests();
+            ByteString.__RunTests();
+            StringBuilder.__RunTests();
+            CString8.__RunTests();
+            PString8.__RunTests();
+            InternalSystem.String.__RunTests();
+            Runtime.__RunTests();
 #endif
 			/*
 			void* thread = Scheduler.CreateThread(Stubs.GetFunctionPointer ("TEST"));
@@ -311,6 +311,15 @@
 			BootControl.Reboot ();
 		}
 
+        /// <summary>
+        /// Performs poweroff
+        /// function.
+        /// </summary>
+        public unsafe static void PowerOff()
+        {
+            SetKernelStage(KernelStage.Stop);
+            BootControl.PowerOff();
+        }
 		#endregion
 	}
 }
Index: Core/SharpOS.Kernel.Core.csproj
===================================================================
--- Core/SharpOS.Kernel.Core.csproj	(revision 1018)
+++ Core/SharpOS.Kernel.Core.csproj	(working copy)
@@ -78,6 +78,7 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="ADC\X86\APM.cs" />
     <Compile Include="ADC\X86\IOPortStream8bit.cs" />
     <Compile Include="DriverSystem\DeviceManager.cs" />
     <Compile Include="DriverSystem\DriverFlags.cs" />
@@ -183,6 +184,7 @@
     <Compile Include="Korlib\System\NullReferenceException.cs" />
     <Compile Include="Shell\Commands\BuiltIn\Cls.cs" />
     <Compile Include="Shell\Commands\BuiltIn\Egg.cs" />
+    <Compile Include="Shell\Commands\BuiltIn\PowerOff.cs" />
     <Compile Include="Shell\Commands\BuiltIn\Stage.cs" />
     <Compile Include="Shell\Commands\BuiltIn\MemDump.cs" />
     <Compile Include="Shell\Commands\BuiltIn\Version.cs" />
@@ -288,7 +290,7 @@
 ..\build\key-compiler.exe -D:.\..\Data\KeyMaps\ "$(SolutionDir)\Data\KeyMaps\US-Dvorak-ANSI.skm" -o:"$(SolutionDir)\build\KeyMaps\US-Dvorak-ANSI.bin"
 ..\build\key-compiler.exe -D:.\..\Data\KeyMaps\ "$(SolutionDir)\Data\KeyMaps\US-Dvorak-Classic.skm" -o:"$(SolutionDir)\build\KeyMaps\US-Dvorak-Classic.bin"
 ..\build\key-compiler.exe -D:.\..\Data\KeyMaps\ -ar -o:"$(TargetDir)\Temp\BuiltinKeymaps.ska" "@$(ProjectDir)\Config\BuiltinKeymaps.cfg"</PreBuildEvent>
-    <PostBuildEvent>..\build\SharpOS-AOT.exe -d:tests.dump -text-dump -v -o ..\build\SharpOS.Kernel.bin ..\build\SharpOS.Kernel.dll ..\build\SharpOS.Kernel.Tests.CS.dll ..\build\SharpOS.Kernel.Tests.IL.dll
+    <PostBuildEvent>..\build\SharpOS-AOT.exe -d:- -v -o ..\build\SharpOS.Kernel.bin ..\build\SharpOS.Kernel.dll ..\build\SharpOS.Kernel.Tests.CS.dll ..\build\SharpOS.Kernel.Tests.IL.dll
 copy ..\build\..\Data\DiskImages\TemplateDisk.img ..\build\distro\common\SharpOS.img
 ..\build\disk-image-updater.exe -m -i ..\build\SharpOS.Kernel.bin -o ..\build\distro\common\SharpOS.img -vhd ..\build\distro\VirtualPC\hd1.vhd</PostBuildEvent>
   </PropertyGroup>
Index: Core/Shell/Commands/BuiltIn/PowerOff.cs
===================================================================
--- Core/Shell/Commands/BuiltIn/PowerOff.cs	(revision 0)
+++ Core/Shell/Commands/BuiltIn/PowerOff.cs	(revision 0)
@@ -0,0 +1,55 @@
+// 
+// (C) 2007 The SharpOS Project Team (http://www.sharpos.org)
+//
+// Authors:
+//	airstep <back.neomind@gmail.com>
+//
+// Licensed under the terms of the GNU GPL v3,
+//  with Classpath Linking Exception for Libraries
+//
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using SharpOS.AOT.Attributes;
+using SharpOS.Kernel.Foundation;
+using SharpOS.Kernel.ADC;
+
+namespace SharpOS.Kernel.Shell.Commands.BuiltIn
+{
+    public unsafe static class PowerOff
+    {
+        public const string name = "poweroff";
+        public const string shortDescription = "Turn off the machine";
+        public const string lblExecute = "COMMANDS.poweroff.Execute";
+        public const string lblGetHelp = "COMMANDS.poweroff.GetHelp";
+
+        [Label(lblExecute)]
+        public static void Execute(CommandExecutionContext* context)
+        {
+            EntryModule.PowerOff();
+        }
+
+        [Label(lblGetHelp)]
+        public static void GetHelp(CommandExecutionContext* context)
+        {
+            TextMode.WriteLine("Syntax: ");
+            TextMode.WriteLine("     poweroff");
+            TextMode.WriteLine("");
+            TextMode.WriteLine("Turn off the machine.");
+        }
+
+        public static CommandTableEntry* CREATE()
+        {
+            CommandTableEntry* entry = (CommandTableEntry*)SharpOS.Kernel.ADC.MemoryManager.Allocate((uint)sizeof(CommandTableEntry));
+
+            entry->name = (CString8*)SharpOS.Kernel.Stubs.CString(name);
+            entry->shortDescription = (CString8*)SharpOS.Kernel.Stubs.CString(shortDescription);
+            entry->func_Execute = (void*)SharpOS.Kernel.Stubs.GetLabelAddress(lblExecute);
+            entry->func_GetHelp = (void*)SharpOS.Kernel.Stubs.GetLabelAddress(lblGetHelp);
+            entry->nextEntry = null;
+
+            return entry;
+        }
+    }
+}
\ No newline at end of file
Index: Core/Shell/Commands/CommandTableHeader.cs
===================================================================
--- Core/Shell/Commands/CommandTableHeader.cs	(revision 1018)
+++ Core/Shell/Commands/CommandTableHeader.cs	(working copy)
@@ -270,6 +270,7 @@
 			header->AddEntry (BuiltIn.MemView.CREATE ());
 			header->AddEntry (BuiltIn.Panic.CREATE ());
 			header->AddEntry (BuiltIn.Reboot.CREATE ());
+            header->AddEntry (BuiltIn.PowerOff.CREATE());
 			header->AddEntry (BuiltIn.Show.CREATE ());
 			header->AddEntry (BuiltIn.Snake.CREATE ());
 			header->AddEntry (BuiltIn.Stage.CREATE ());