diff --git a/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHost.cs b/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHost.cs
new file mode 100644
index 000000000..bbf9c3c4f
--- /dev/null
+++ b/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHost.cs
@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Cosmos.Hardware.PC.Bus.USB
+{
+    public abstract class USBHost : Device
+    {
+    }
+}
diff --git a/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHostOHCI.cs b/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHostOHCI.cs
new file mode 100644
index 000000000..c5d8fcd72
--- /dev/null
+++ b/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHostOHCI.cs
@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Cosmos.Hardware.PC.Bus.USB
+{
+    public class USBHostOHCI : USBHost
+    {
+        public static void ScanDevices()
+        {
+            foreach (PCIDevice pci in PCIBus.Devices)
+            {
+                if (pci.ClassCode == 0x0c && //bus
+                    pci.SubClass == 0x03 && //usb
+                    pci.ProgIF == 0x10) //ohci :D 
+                {
+                    //(as this is an open standard, vendor/device specific implementations should all work the same)
+                    Device.Add(new USBHostOHCI(pci));
+                }
+            }
+        }
+
+        private PCIDeviceNormal mydevice;
+        private USBHostOHCIRegisters regs;
+        public USBHostOHCI(PCIDevice pcidev)
+        {
+            mydevice = pcidev as PCIDeviceNormal;
+            regs = new USBHostOHCIRegisters(pcidev.GetAddressSpace(0) as MemoryAddressSpace);
+        }
+
+
+        public override string Name
+        {
+            get { throw new NotImplementedException(); }
+        }
+    }
+}
diff --git a/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHostOHCIRegisters.cs b/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHostOHCIRegisters.cs
new file mode 100644
index 000000000..470967026
--- /dev/null
+++ b/source/Cosmos/Cosmos.Hardware/Bus/USB/USBHostOHCIRegisters.cs
@@ -0,0 +1,142 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Cosmos.Hardware.PC.Bus;
+
+namespace Cosmos.Hardware.PC.Bus.USB
+{
+    public class USBHostOHCIRegisters
+    {
+        private MemoryAddressSpace regs;
+        public USBHostOHCIRegisters(MemoryAddressSpace regs)
+        {
+            this.regs = regs;
+        }
+
+        public UInt32 HcRevision { get { return regs.Read32Unchecked(0x0); } }
+        public UInt32 HcControl { get { return regs.Read32Unchecked(0x4); } set { regs.Write32Unchecked(0x4, value); } }
+        public UInt32 HcCommandStatus { get { return regs.Read32Unchecked(0x8); } set { regs.Write32Unchecked(0x8, value); } }
+        public UInt32 HcInterruptStatus { get { return regs.Read32Unchecked(0xC); } set { regs.Write32Unchecked(0xC, value); } }
+        public UInt32 HcInterruptEnable { get { return regs.Read32Unchecked(0x10); } set { regs.Write32Unchecked(0x10, value); } }
+        public UInt32 HcInterruptDisable { get { return regs.Read32Unchecked(0x14); } set { regs.Write32Unchecked(0x14, value); } }
+        public UInt32 HcHCCA { get { return regs.Read32Unchecked(0x18); } set { regs.Write32Unchecked(0x18, value); } }
+        public UInt32 HcPeriodCurrentED { get { return regs.Read32Unchecked(0x1C); } set { regs.Write32Unchecked(0x1C, value); } }
+        public UInt32 HcControlHeadED { get { return regs.Read32Unchecked(0x20); } set { regs.Write32Unchecked(0x20, value); } }
+        public UInt32 HcControlCurrentED { get { return regs.Read32Unchecked(0x24); } set { regs.Write32Unchecked(0x24, value); } }
+        public UInt32 HcBulkHeadED { get { return regs.Read32Unchecked(0x28); } set { regs.Write32Unchecked(0x28, value); } }
+        public UInt32 HcBulkCurrentED { get { return regs.Read32Unchecked(0x2C); } set { regs.Write32Unchecked(0x2C, value); } }
+        public UInt32 HcDoneHead { get { return regs.Read32Unchecked(0x30); } set { regs.Write32Unchecked(0x30, value); } }
+        public UInt32 HcFmInterval { get { return regs.Read32Unchecked(0x34); } set { regs.Write32Unchecked(0x34, value); } }
+        public UInt32 HcFmRemaining { get { return regs.Read32Unchecked(0x38); } set { regs.Write32Unchecked(0x38, value); } }
+        public UInt32 HcFmNumber { get { return regs.Read32Unchecked(0x3C); } set { regs.Write32Unchecked(0x3C, value); } }
+        public UInt32 HcPeriodicStart { get { return regs.Read32Unchecked(0x40); } set { regs.Write32Unchecked(0x40, value); } }
+        public UInt32 HcLSThreshold { get { return regs.Read32Unchecked(0x44); } set { regs.Write32Unchecked(0x44, value); } }
+        public UInt32 HcRhDescriptorA { get { return regs.Read32Unchecked(0x48); } set { regs.Write32Unchecked(0x48, value); } }
+        public UInt32 HcRhDescriptorB { get { return regs.Read32Unchecked(0x4C); } set { regs.Write32Unchecked(0x4C, value); } }
+        public UInt32 HcRhStatus { get { return regs.Read32Unchecked(0x50); } set { regs.Write32Unchecked(0x50, value); } }
+                
+    }
+
+    public struct HcRevisionReg
+    {
+        private UInt32 data;
+        private HcRevisionReg(UInt32 a)
+        {
+            this.data = a;
+        }
+
+        #region Implicit Conversions
+        public static implicit operator UInt32(HcRevisionReg a)
+        {
+            return a.data;
+        }
+
+        public static implicit operator HcRevisionReg(UInt32 u)
+        {
+            return new HcRevisionReg(u);
+        }
+        #endregion
+
+        #region FieldAccessors
+        public byte Major
+        {
+            get { return (byte)((data & 0xf0) >> 4); }
+            set { data = (data & 0xffffff0f) | (UInt32)((value & 0xf) << 4); }
+        }
+        public byte Minor
+        {
+            get { return (byte)(data & 0xf); }
+            set { data = (data & 0xfffffff0) | (UInt32)(value & 0xf); }
+        }
+        #endregion
+
+        public override string ToString()
+        {
+            return data.ToString();
+        }
+    }
+
+    public struct HcControlReg
+    {
+        private UInt32 data;
+        private HcControlReg(UInt32 a)
+        {
+            this.data = a;
+        }
+
+        #region Implicit Conversions
+        public static implicit operator UInt32(HcControlReg a)
+        {
+            return a.data;
+        }
+
+        public static implicit operator HcControlReg(UInt32 u)
+        {
+            return new HcControlReg(u);
+        }
+        #endregion
+
+        #region FieldAccessors
+
+        public byte ControlBulkServiceRatio
+        {
+            get { return (byte)((data & 0x3)); }
+        }
+        public bool PeriodicListEnable
+        {
+            get { return (data & 0x4) == 0x4; }
+        }
+        public bool IsochronousEnable
+        {
+            get { return (data & 0x8) == 0x8; }
+        }
+
+        public bool ControlListEnable
+        {
+            get { return (data & 0x10) == 0x10; }
+        }
+        public bool BulkListEnable
+        {
+            get { return (data & 0x20) == 0x20; }
+        }
+
+        public USBStates HostControllerFunctionalState
+        {
+            get { return (USBStates)((data & 0xc0) >> 6); }
+            set { data = data & 0xffffff3f | ((UInt32)value << 6); }
+        }
+
+        #endregion
+
+        public override string ToString()
+        {
+            return data.ToString();
+        }
+    }
+
+    public enum USBStates : byte
+    {
+        Reset = 0, Resume = 1, Operational = 2, Suspend = 3
+    }
+}
diff --git a/source/Cosmos/Cosmos.Hardware/Cosmos.Hardware.csproj b/source/Cosmos/Cosmos.Hardware/Cosmos.Hardware.csproj
index 2d711f493..06b65965e 100644
--- a/source/Cosmos/Cosmos.Hardware/Cosmos.Hardware.csproj
+++ b/source/Cosmos/Cosmos.Hardware/Cosmos.Hardware.csproj
@@ -52,6 +52,9 @@
   <ItemGroup>
     <Compile Include="BlockDevice.cs" />
     <Compile Include="Bus\Bus.cs" />
+    <Compile Include="Bus\USB\USBHost.cs" />
+    <Compile Include="Bus\USB\USBHostOHCI.cs" />
+    <Compile Include="Bus\USB\USBHostOHCIRegisters.cs" />
     <Compile Include="Device.cs" />
     <Compile Include="Extension\NumberSystem\Binary.cs" />
     <Compile Include="Extension\NumberSystem\Hex.cs" />
diff --git a/source/Cosmos/Cosmos.Kernel/Cosmos.Kernel.csproj b/source/Cosmos/Cosmos.Kernel/Cosmos.Kernel.csproj
index 59600d3c8..0bfaad63e 100644
--- a/source/Cosmos/Cosmos.Kernel/Cosmos.Kernel.csproj
+++ b/source/Cosmos/Cosmos.Kernel/Cosmos.Kernel.csproj
@@ -43,6 +43,8 @@
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Debug.cs" />