diff --git a/BizHawk.Emulation/Disc/Disc.API.cs b/BizHawk.Emulation/Disc/Disc.API.cs
index c9e1fc3707..f5f85b3c4c 100644
--- a/BizHawk.Emulation/Disc/Disc.API.cs
+++ b/BizHawk.Emulation/Disc/Disc.API.cs
@@ -1,10 +1,43 @@
 using System;
+using System.Collections.Generic;
 
 //main apis for emulator core routine use
 
 namespace BizHawk.Disc
 {
 
+	public class DiscHopper
+	{
+		public Disc CurrentDisc;
+
+		public Queue<Disc> Queue = new Queue<Disc>();
+
+		public void Enqueue(Disc disc)
+		{
+			Queue.Enqueue(disc);
+		}
+
+		public void Next()
+		{
+			if (Queue.Count != 0) Queue.Dequeue();
+		}
+		public void Eject()
+		{
+			CurrentDisc = null;
+		}
+		public void Insert()
+		{
+			if (Queue.Count > 0)
+				CurrentDisc = Queue.Peek();
+		}
+
+		public void Clear()
+		{
+			CurrentDisc = null;
+			Queue.Clear();
+		}
+	}
+
 	public partial class Disc
 	{
 		//main API to read a 2352-byte LBA from a disc.
diff --git a/BizHawk.Emulation/Disc/Disc.cs b/BizHawk.Emulation/Disc/Disc.cs
index ecf0e58287..2401d4ecca 100644
--- a/BizHawk.Emulation/Disc/Disc.cs
+++ b/BizHawk.Emulation/Disc/Disc.cs
@@ -288,9 +288,10 @@ namespace BizHawk.Disc
 			blob.PhysicalPath = fiIso.FullName;
 			Blobs.Add(blob);
 			int num_lba = (int)(fiIso.Length / 2048);
-			//index.length_lba = num_lba;
+			track.length_lba = num_lba;
 			if (fiIso.Length % 2048 != 0)
 				throw new InvalidOperationException("invalid iso file (size not multiple of 2048)");
+			//TODO - handle this with Final Fantasy 9 cd1.iso
 
 			var ecmCacheBlob = new ECMCacheBlob(blob);
 			for (int i = 0; i < num_lba; i++)
diff --git a/BizHawk.Emulation/Disc/DiscTOC.cs b/BizHawk.Emulation/Disc/DiscTOC.cs
index 97a4c3a670..5249c046e4 100644
--- a/BizHawk.Emulation/Disc/DiscTOC.cs
+++ b/BizHawk.Emulation/Disc/DiscTOC.cs
@@ -14,7 +14,7 @@ namespace BizHawk.Disc
 			public int num;
 			public List<Track> Tracks = new List<Track>();
 
-			//the length of the track (should be the sum of all track lengths)
+			//the length of the session (should be the sum of all track lengths)
 			public int length_lba;
 			public Cue.CueTimestamp FriendlyLength { get { return new Cue.CueTimestamp(length_lba); } }
 		}
diff --git a/BizHawk.Emulation/ExternalCores/EmuFile.cs b/BizHawk.Emulation/ExternalCores/EmuFile.cs
index ab60130237..255c58610d 100644
--- a/BizHawk.Emulation/ExternalCores/EmuFile.cs
+++ b/BizHawk.Emulation/ExternalCores/EmuFile.cs
@@ -13,22 +13,99 @@ using System.Threading;
 
 namespace BizHawk
 {
+	/// <summary>
+	/// represents an external core's interface to a disc
+	/// </summary>
+	public class DiscInterface : ExternalCore
+	{
+		public DiscInterface(IExternalCoreAccessor accessor)
+			: base(accessor)
+		{
+			UnmanagedOpaque = QueryCoreCall<Func<IntPtr, IntPtr>>("DiscInterface.Construct")(ManagedOpaque);
+
+			SetFp("Dispose", new disposeDelegate(Dispose));
+			SetFp("GetNumSessions", new GetNumSessionsDelegate(GetNumSessions));
+			SetFp("GetNumTracks", new GetNumTracksDelegate(GetNumTracks));
+			SetFp("GetTrack", new GetTrackDelegate(GetTrack));
+		}
+
+		bool disposed = false;
+		public override void Dispose()
+		{
+			if (disposed) return;
+			disposed = true;
+
+			QueryCoreCall<Action>("DiscInterface.Delete")();
+
+			base.Dispose();
+		}
+
+		public Disc.DiscHopper DiscHopper;
+
+		void SetFp(string name, Delegate del)
+		{
+			QueryCoreCall<Action<string, IntPtr>>("DiscInterface.Set_fp")(name, ExportDelegate(del));
+		}
+
+		struct TrackInfo
+		{
+			public Disc.ETrackType TrackType;
+			public int length_lba;
+			public int start_lba;
+		}
+
+		int GetNumSessions()
+		{
+			return DiscHopper.CurrentDisc.ReadTOC().Sessions.Count;
+		}
+
+		int GetNumTracks(int session)
+		{
+			return DiscHopper.CurrentDisc.ReadTOC().Sessions[session].Tracks.Count;
+		}
+
+		TrackInfo GetTrack(int session, int track)
+		{
+			var ti = new TrackInfo();
+			var toc_track = DiscHopper.CurrentDisc.ReadTOC().Sessions[session].Tracks[track];
+			ti.TrackType = toc_track.TrackType;
+			ti.length_lba = toc_track.length_lba;
+			return ti;
+		}
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		delegate void disposeDelegate();
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		delegate int GetNumSessionsDelegate();
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		delegate int GetNumTracksDelegate(int session);
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		delegate TrackInfo GetTrackDelegate(int session, int track);
+	}
+
 
 	public class EmuFile : ExternalCore
 	{
-
 		public EmuFile(IExternalCoreAccessor accessor)
 			: base(accessor)
 		{
 			UnmanagedOpaque = QueryCoreCall<Func<IntPtr, IntPtr>>("EmuFile.Construct")(ManagedOpaque);
 			
-			QueryCoreCall<Action<string, IntPtr>>("EmuFile.Set_fp")("fgetc", ExportDelegate(new fgetcDelegate(fgetc)));
-			QueryCoreCall<Action<string, IntPtr>>("EmuFile.Set_fp")("fread", ExportDelegate(new freadDelegate(fread)));
-			QueryCoreCall<Action<string, IntPtr>>("EmuFile.Set_fp")("fwrite", ExportDelegate(new fwriteDelegate(fwrite)));
-			QueryCoreCall<Action<string, IntPtr>>("EmuFile.Set_fp")("fseek", ExportDelegate(new fseekDelegate(fseek)));
-			QueryCoreCall<Action<string, IntPtr>>("EmuFile.Set_fp")("ftell", ExportDelegate(new ftellDelegate(ftell)));
-			QueryCoreCall<Action<string, IntPtr>>("EmuFile.Set_fp")("size", ExportDelegate(new sizeDelegate(size)));
-			QueryCoreCall<Action<string, IntPtr>>("EmuFile.Set_fp")("size", ExportDelegate(new sizeDelegate(size)));
+			SetFp("fgetc", new fgetcDelegate(fgetc));
+			SetFp("fread", new freadDelegate(fread));
+			SetFp("fwrite", new fwriteDelegate(fwrite));
+			SetFp("fseek", new fseekDelegate(fseek));
+			SetFp("ftell", new ftellDelegate(ftell));
+			SetFp("size", new sizeDelegate(size));
+			SetFp("dispose", new disposeDelegate(Dispose));
+		}
+
+		void SetFp(string name, Delegate del)
+		{
+			QueryCoreCall<Action<string, IntPtr>>("EmuFile.Set_fp")(name, ExportDelegate(del));
 		}
 
 		public Stream BaseStream { get; set; }
@@ -54,6 +131,7 @@ namespace BizHawk
 		{
 			return BaseStream.ReadByte();
 		}
+
 		IntPtr fread(
 			[Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
 			byte[] ptr,
@@ -65,12 +143,14 @@ namespace BizHawk
 			int ret = BaseStream.Read(ptr, 0, (int)len);
 			return new IntPtr(ret);
 		}
+
 		IntPtr fseek(IntPtr offset, IntPtr origin)
 		{
 			SeekOrigin so = (SeekOrigin)origin.ToInt32();
 			long loffset = offset.ToInt64();
 			return new IntPtr(BaseStream.Seek(loffset, so));
 		}
+
 		IntPtr ftell() { return new IntPtr(BaseStream.Position); }
 		IntPtr size() { return new IntPtr(BaseStream.Length); }
 
@@ -89,6 +169,8 @@ namespace BizHawk
 		delegate int fgetcDelegate();
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		delegate void disposeDelegate();
+		//TODO - for more speed fread and fwrite might appreciate taking pointers
+		//(although, we'll have to convert it to an array to deal with an underlying stream anyway -- or will we?
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		delegate IntPtr freadDelegate(
 			[Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
diff --git a/BizHawk.Emulation/ExternalCores/ExternalCore.cs b/BizHawk.Emulation/ExternalCores/ExternalCore.cs
index f55bb72fb0..7c2fe64230 100644
--- a/BizHawk.Emulation/ExternalCores/ExternalCore.cs
+++ b/BizHawk.Emulation/ExternalCores/ExternalCore.cs
@@ -13,6 +13,7 @@ using System.Collections.Generic;
 
 namespace BizHawk
 {
+
 	
 	/// <summary>
 	/// universal interface to a shared library
@@ -62,14 +63,16 @@ namespace BizHawk
 
 			if (register)
 			{
+				mCoreRegistry[core.ManagedOpaque] = core;
 			}
 			else
 			{
-				//delete
+				mCoreRegistry.Remove(core.ManagedOpaque);
 			}
 		}
 
 		StaticCoreCommon scc;
+		Dictionary<IntPtr, ExternalCore> mCoreRegistry = new Dictionary<IntPtr, ExternalCore>();
 
 		public void Dispose()
 		{
@@ -95,7 +98,10 @@ namespace BizHawk
 			{
 				return scc.ClientSignal(type, obj, param, value);
 			}
-			else return IntPtr.Zero;
+			else
+			{
+				return mCoreRegistry[obj].ClientSignal(type, obj, param, value);
+			}
 		}
 
 		public IntPtr Signal(string type, IntPtr obj, string param, IntPtr value)
@@ -112,17 +118,18 @@ namespace BizHawk
 		public IntPtr ManagedOpaque;
 		public IntPtr UnmanagedOpaque;
 		static int _ManagedOpaque_Counter = 1;
+		private static object oLock = new object();
 
 		protected IExternalCoreAccessor mAccessor;
 		public ExternalCore(IExternalCoreAccessor accessor)
 		{
 			mAccessor = accessor;
-			mAccessor.RegisterCore(this,true);
-			lock (this)
+			lock (oLock)
 			{
 				ManagedOpaque = new IntPtr(_ManagedOpaque_Counter);
 				_ManagedOpaque_Counter++;
 			}
+			mAccessor.RegisterCore(this, true);
 		}
 
 		public virtual void Dispose()
@@ -136,8 +143,13 @@ namespace BizHawk
 		/// <summary>
 		/// cores call into the client from here. this system is not fully baked yet, though
 		/// </summary>
-		virtual public IntPtr ClientSignal(string type, IntPtr obj, string param, IntPtr value)
+		public virtual IntPtr ClientSignal(string type, IntPtr obj, string param, IntPtr value)
 		{
+			//if (type == "FACTORY")
+			//{
+			//    return new DiscInterface(mAccessor).UnmanagedOpaque;
+			//}
+			//else return IntPtr.Zero;
 			return IntPtr.Zero;
 		}
 
@@ -230,6 +242,11 @@ namespace BizHawk
 			mAccessor.Signal("SET_CLIENT_SIGNAL", IntPtr.Zero, null, ExportDelegate(ClientSignal));
 		}
 
+		public override IntPtr ClientSignal(string type, IntPtr obj, string param, IntPtr value)
+		{
+			return IntPtr.Zero;
+		}
+
 	}
 
 
diff --git a/BizHawk.Emulation/ExternalCores/PsxCore.cs b/BizHawk.Emulation/ExternalCores/PsxCore.cs
index d2810e5013..c1cc879c85 100644
--- a/BizHawk.Emulation/ExternalCores/PsxCore.cs
+++ b/BizHawk.Emulation/ExternalCores/PsxCore.cs
@@ -19,6 +19,8 @@ namespace BizHawk
 			CoreOutputComm = new CoreOutputComm();
 			CoreInputComm = new CoreInputComm();
 
+			mDiscInterface = new DiscInterface(mAccessor);
+
 			UnmanagedOpaque = QueryCoreCall<Func<IntPtr,IntPtr>>("PsxCore.Construct")(ManagedOpaque);
 
 			QueryCoreCall(out cGetResolution, "PsxCore.GetResolution");
@@ -26,6 +28,21 @@ namespace BizHawk
 			QueryCoreCall(out cFrameAdvance, "PsxCore.FrameAdvance");
 		}
 
+		DiscInterface mDiscInterface;
+		public void SetDiscHopper(Disc.DiscHopper hopper)
+		{
+			mDiscInterface.DiscHopper = hopper;
+		}
+
+		public override IntPtr ClientSignal(string type, IntPtr obj, string param, IntPtr value)
+		{
+			if (param == "GetDiscInterface")
+			{
+				return mDiscInterface.UnmanagedOpaque;
+			}
+			return base.ClientSignal(type, obj, param, value);
+		}
+
 		Func<System.Drawing.Size> cGetResolution;
 		Action cFrameAdvance;
 		Action<IntPtr> cUpdateVideoBuffer;
diff --git a/BizHawk.MultiClient/Global.cs b/BizHawk.MultiClient/Global.cs
index 51a897a810..0fff3aa991 100644
--- a/BizHawk.MultiClient/Global.cs
+++ b/BizHawk.MultiClient/Global.cs
@@ -74,6 +74,9 @@ namespace BizHawk.MultiClient
 			return mg.GetControllersAsMnemonic();
 		}
 
+		public static Disc.DiscHopper DiscHopper = new BizHawk.Disc.DiscHopper();
+
+
 		public static CoreAccessor PsxCoreLibrary = new CoreAccessor(new Win32LibAccessor("PsxHawk.Core.dll"));
 
 	}
diff --git a/BizHawk.MultiClient/MainForm.cs b/BizHawk.MultiClient/MainForm.cs
index 2a9d39d533..1f48c7054c 100644
--- a/BizHawk.MultiClient/MainForm.cs
+++ b/BizHawk.MultiClient/MainForm.cs
@@ -848,12 +848,10 @@ namespace BizHawk.MultiClient
 						nextEmulator = psx;
 						game = new RomGame();
 						var disc = Disc.Disc.FromIsoPath(path);
-						//Global.DiscHopper.Clear();
-						//Global.DiscHopper.Enqueue(disc);
-						//Global.DiscHopper.Insert();
-
-						//set disc
-						//psx.
+						Global.DiscHopper.Clear();
+						Global.DiscHopper.Enqueue(disc);
+						Global.DiscHopper.Insert();
+						psx.SetDiscHopper(Global.DiscHopper);
 					}
 				}
 				else
diff --git a/BizHawk.UnmanagedCore/BizHawk.UnmanagedCore.vcproj b/BizHawk.UnmanagedCore/BizHawk.UnmanagedCore.vcproj
index c74ddbd85d..daf3dfad2c 100644
--- a/BizHawk.UnmanagedCore/BizHawk.UnmanagedCore.vcproj
+++ b/BizHawk.UnmanagedCore/BizHawk.UnmanagedCore.vcproj
@@ -48,6 +48,7 @@
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				DebugInformationFormat="4"
+				CallingConvention="0"
 			/>
 			<Tool
 				Name="VCManagedResourceCompilerTool"
@@ -110,6 +111,7 @@
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				DebugInformationFormat="3"
+				CallingConvention="0"
 			/>
 			<Tool
 				Name="VCManagedResourceCompilerTool"
@@ -151,6 +153,14 @@
 			RelativePath=".\core.h"
 			>
 		</File>
+		<File
+			RelativePath=".\DiscInterface.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\DiscInterface.h"
+			>
+		</File>
 		<File
 			RelativePath=".\emufile.cpp"
 			>
diff --git a/BizHawk.UnmanagedCore/DiscInterface.cpp b/BizHawk.UnmanagedCore/DiscInterface.cpp
new file mode 100644
index 0000000000..594f240d6b
--- /dev/null
+++ b/BizHawk.UnmanagedCore/DiscInterface.cpp
@@ -0,0 +1,11 @@
+#include "DiscInterface.h"
+
+static FunctionRecord records[] = {
+	REG("DiscInterface.Construct", &DiscInterface::Construct),
+	REG("DiscInterface.Set_fp", &DiscInterface::Set_fp),
+};
+
+void* DiscInterface::Construct(void* ManagedOpaque)
+{
+	return new DiscInterface(ManagedOpaque);
+}
\ No newline at end of file
diff --git a/BizHawk.UnmanagedCore/DiscInterface.h b/BizHawk.UnmanagedCore/DiscInterface.h
new file mode 100644
index 0000000000..91ec542cd9
--- /dev/null
+++ b/BizHawk.UnmanagedCore/DiscInterface.h
@@ -0,0 +1,61 @@
+#ifndef _DISCINTERFACE_H_
+#define _DISCINTERFACE_H_
+
+#include "DiscInterface.h"
+#include "core.h"
+
+class DiscInterface
+{
+	void* ManagedOpaque;
+
+public:
+
+	enum ETrackType : int
+	{
+		ETrackType_Mode1_2352,
+		ETrackType_Mode1_2048,
+		ETrackType_Mode2_2352,
+		ETrackType_Audio
+	};
+
+	struct TrackInfo
+	{
+		ETrackType TrackType;
+		int length_lba;
+		int start_lba;
+	};
+
+	FUNC<void()> Dispose;
+	FUNC<int()> GetNumSessions;
+	FUNC<int(int)> GetNumTracks;
+	FUNC<TrackInfo(int,int)> GetTrack;
+
+	~DiscInterface()
+	{
+		Dispose.func();
+	}
+	
+	DiscInterface(void* _ManagedOpaque)
+		: ManagedOpaque(_ManagedOpaque)
+	{
+	}
+
+	void* Construct(void* ManagedOpaque);
+
+	void Delete()
+	{
+		delete this;
+	}
+
+	void Set_fp(const char* param, void* value)
+	{
+		if(!strcmp(param,"GetNumSessions")) GetNumSessions.set(value);
+		if(!strcmp(param,"GetNumTracks")) GetNumTracks.set(value);
+		if(!strcmp(param,"GetTrack")) GetTrack.set(value);
+		if(!strcmp(param,"Dispose")) Dispose.set(value);
+	}
+
+};
+
+
+#endif //_DISCINTERFACE_H_
diff --git a/BizHawk.UnmanagedCore/core.cpp b/BizHawk.UnmanagedCore/core.cpp
index 9b530e2871..5afc2ecac6 100644
--- a/BizHawk.UnmanagedCore/core.cpp
+++ b/BizHawk.UnmanagedCore/core.cpp
@@ -2,13 +2,7 @@
 #include "core.h"
 #include "emufile.h"
 #include "emufile_hawk.h"
-
-
-//TODO
-class DISC_INTERFACE
-{
-};
-
+#include "DiscInterface.h"
 
 //TODO - setup a null file to use as the default console, so we dont have to check whether its set to null everywhere
 class EMUFILE_HAWK;
@@ -84,7 +78,9 @@ extern "C" __declspec(dllexport) void* Core_signal(const char* type, void* obj,
 	//force a reference to our core types. a bit annoying but if its this easy i guess i dont mind
 	if(!strcmp(type,"IMPOSSIBLE"))
 	{
-		return new EMUFILE_HAWK(0);
+		con->fprintf("%x\n",((DiscInterface*)NULL)->Construct(NULL));
+		con->fprintf("%x\n",((EMUFILE_HAWK*)NULL)->Construct(NULL));
+		return 0;
 	}
 
 	return 0;
diff --git a/BizHawk.UnmanagedCore/core.h b/BizHawk.UnmanagedCore/core.h
index 9af8231feb..f3710a1628 100644
--- a/BizHawk.UnmanagedCore/core.h
+++ b/BizHawk.UnmanagedCore/core.h
@@ -23,6 +23,7 @@ extern EMUFILE_HAWK* con;
 //since we may need to change all these later to work un-generalized
 //but seriously. before doing that, i would rather return sizeof(functionpointer) bytes as a token to the managed code and pass that back in
 //(MP stands for MEMBER POINTER)
+//we could also try using the FastDelegate. really, we probably should.
 template<typename T> void* MP(const T& a)
 {
 	union U{
@@ -35,7 +36,7 @@ template<typename T> void* MP(const T& a)
 }
 
 //this is a function pointer which can be assigned without having to type the function protoype again to cast it.
-template<typename T> class FP
+template<typename T> class __FP
 {
 private:
 	template<typename T> T MPX(void* a)
@@ -48,12 +49,39 @@ private:
 		return u.t;
 		CTASSERT(sizeof(U)==4||(sizeof(U)==8&&sizeof(void*)==8));
 	}
+//protected:
 public:
 	T func;
 	void set(void* val) { func = MPX<T>(val); }
 };
 
-//nothing important
+//----------------
+//these templates help us call a function pointer directly with () instead of fp.func()
+
+template<typename R=void> struct FUNC0 : public __FP<R(*)()> { public:
+	R operator()() { return func(); }
+};
+template<typename A1, typename R=void> struct FUNC1 : public __FP<R(*)(A1)> { public:
+	R operator()(A1 a1) { return func(a1); }
+};
+template<typename A1, typename A2, typename R=void> struct FUNC2 : public __FP<R(*)(A1,A2)> { public:
+	R operator()(A1 a1, A2 a2) { return func(a1,a2); }
+};
+template<typename A1, typename A2, typename A3, typename R=void> struct FUNC3 : public __FP<R(*)(A1,A2,A3)> { public:
+	R operator()(A1 a1, A2 a2, A3 a3) { return func(a1,a2,a3); }
+};
+template<typename A1, typename A2, typename A3, typename A4, typename R=void> struct FUNC4 : public __FP<R(*)(A1,A2,A3,A4)> { public:
+	R operator()(A1 a1, A2 a2, A3 a3, A4 a4) { return func(a1,a2,a3,a4); }
+};
+
+template<typename Signature> class FUNC;
+template<typename R> class FUNC<R()> : public FUNC0<R> {};
+template<typename A1, typename R> class FUNC<R(A1)> : public FUNC1<A1,R> {};
+template<typename A1, typename A2, typename R> class FUNC<R(A1,A2)> : public FUNC2<A1,A2,R> {};
+template<typename A1, typename A2, typename A3, typename R> class FUNC<R(A1,A2,A3)> : public FUNC3<A1,A2,A3,R> {};
+template<typename A1, typename A2, typename A3, typename A4, typename R> class FUNC<R(A1,A2,A3,A4)> : public FUNC4<A1,A2,A3,A4,R> {};
+//----------------
+
 void _registerFunction(const char* _name, void* _funcptr);
 struct FunctionRecord
 {
@@ -64,7 +92,7 @@ struct FunctionRecord
 };
 
 //register a core object member function. put it in a global static array
-template<typename T> FunctionRecord FUNC(const char* name, const T& a)
+template<typename T> FunctionRecord REG(const char* name, const T& a)
 {
 	return FunctionRecord(name,MP(a));
 }
diff --git a/BizHawk.UnmanagedCore/emufile.h b/BizHawk.UnmanagedCore/emufile.h
index 77ab466b2b..aa492127fc 100644
--- a/BizHawk.UnmanagedCore/emufile.h
+++ b/BizHawk.UnmanagedCore/emufile.h
@@ -1,22 +1,3 @@
- /* Copyright (C) 2009 DeSmuME team
- *
- * This file is part of DeSmuME
- *
- * DeSmuME is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * DeSmuME is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with DeSmuME; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
-*/
-
 #ifndef EMUFILE_H
 #define EMUFILE_H
 
diff --git a/BizHawk.UnmanagedCore/emufile_hawk.cpp b/BizHawk.UnmanagedCore/emufile_hawk.cpp
index d6faa98cc2..3600bd4a2a 100644
--- a/BizHawk.UnmanagedCore/emufile_hawk.cpp
+++ b/BizHawk.UnmanagedCore/emufile_hawk.cpp
@@ -2,9 +2,9 @@
 #include "core.h"
 
 static FunctionRecord records[] = {
-	FUNC("EmuFile.Construct", &EMUFILE_HAWK::Construct),
-	FUNC("EmuFile.Set_fp", &EMUFILE_HAWK::Set_fp),
-	FUNC("EmuFile.Delete", &EMUFILE_HAWK::Delete),
+	REG("EmuFile.Construct", &EMUFILE_HAWK::Construct),
+	REG("EmuFile.Set_fp", &EMUFILE_HAWK::Set_fp),
+	REG("EmuFile.Delete", &EMUFILE_HAWK::Delete),
 };
 
 
@@ -24,7 +24,6 @@ int EMUFILE_HAWK::fprintf(const char *format, ...)
 	return amt;
 }
 
-
 void* EMUFILE_HAWK::Construct(void* ManagedOpaque)
 {
 	return new EMUFILE_HAWK(ManagedOpaque);
diff --git a/BizHawk.UnmanagedCore/emufile_hawk.h b/BizHawk.UnmanagedCore/emufile_hawk.h
index 3de897b92b..c92c86ef9f 100644
--- a/BizHawk.UnmanagedCore/emufile_hawk.h
+++ b/BizHawk.UnmanagedCore/emufile_hawk.h
@@ -10,22 +10,23 @@ class EMUFILE_HAWK : public EMUFILE
 
 
 	struct {
-		FP<int(*)()> fgetc;
-		FP<size_t(*)(const void* ptr, size_t bytes)> fread;
-		FP<void(*)(const void* ptr, size_t bytes)> fwrite;
-		FP<int(*)(int offset, int origin)> fseek;
-		FP<int(*)()> ftell;
-		FP<int(*)()> size;
-		FP<void(*)()> dispose;
+		FUNC<int()> fgetc;
+		FUNC<int(const void* ptr, size_t bytes)> fread;
+		FUNC<void(const void* ptr, size_t bytes)> fwrite;
+		FUNC<int(int offset, int origin)> fseek;
+		FUNC<int()> ftell;
+		FUNC<int()> size;
+		FUNC<void()> dispose;
 	} _;
 
 public:
 	~EMUFILE_HAWK()
 	{
-		_.dispose.func();
+		_.dispose();
 	}
-		EMUFILE_HAWK(void* _ManagedOpaque)
-	: ManagedOpaque(_ManagedOpaque)
+
+	EMUFILE_HAWK(void* _ManagedOpaque)
+		: ManagedOpaque(_ManagedOpaque)
 	{
 	}
 
@@ -47,18 +48,15 @@ public:
 		if(!strcmp(param,"dispose")) _.dispose.set(value);
 	}
 
-	virtual int fgetc() { return _.fgetc.func(); }
+	virtual int fgetc() { return _.fgetc(); }
 	virtual FILE *get_fp() { return NULL; }
 	virtual int fputc(int c) { return -1; }
 	virtual int fprintf(const char *format, ...);
-	virtual size_t _fread(const void *ptr, size_t bytes) { return _.fread.func(ptr,bytes); }
-	virtual void fwrite(const void *ptr, size_t bytes) { return _.fwrite.func(ptr,bytes); }
-	virtual int fseek(int offset, int origin) { return _.fseek.func(offset,origin); }
-	virtual int ftell() { return _.ftell.func(); }
-	virtual int size() { return _.size.func(); }
-
-	
-	void* signal(const char* _param, void* value);
+	virtual size_t _fread(const void *ptr, size_t bytes) { return _.fread(ptr,bytes); }
+	virtual void fwrite(const void *ptr, size_t bytes) { return _.fwrite(ptr,bytes); }
+	virtual int fseek(int offset, int origin) { return _.fseek(offset,origin); }
+	virtual int ftell() { return _.ftell(); }
+	virtual int size() { return _.size(); }
 };
 
 
diff --git a/PsxHawk.Core/PsxCore.cpp b/PsxHawk.Core/PsxCore.cpp
index f0db85e28b..53a8eec38e 100644
--- a/PsxHawk.Core/PsxCore.cpp
+++ b/PsxHawk.Core/PsxCore.cpp
@@ -3,15 +3,21 @@
 #include <string.h>
 #include <stdlib.h>
 #include "emufile_hawk.h"
+#include "DiscInterface.h"
 
 
 static FunctionRecord records[] = {
-	FUNC("PsxCore.Construct", &PsxCore::Construct),
-	FUNC("PsxCore.GetResolution", &PsxCore::GetResolution),
-	FUNC("PsxCore.FrameAdvance", &PsxCore::FrameAdvance),
-	FUNC("PsxCore.UpdateVideoBuffer", &PsxCore::UpdateVideoBuffer)
+	REG("PsxCore.Construct", &PsxCore::Construct),
+	REG("PsxCore.GetResolution", &PsxCore::GetResolution),
+	REG("PsxCore.FrameAdvance", &PsxCore::FrameAdvance),
+	REG("PsxCore.UpdateVideoBuffer", &PsxCore::UpdateVideoBuffer)
 };
 
+PsxCore::PsxCore(void* _opaque)
+	: opaque(_opaque)
+{
+	discInterface = (DiscInterface*)ClientSignal(NULL,opaque,"GetDiscInterface",NULL);
+}
 
 PsxCore::Size PsxCore::GetResolution()
 {
@@ -28,6 +34,8 @@ void PsxCore::FrameAdvance()
 	{
 		videoBuffer[i] = rand() | (rand()<<15) | 0xFF000000;
 	}
+	DiscInterface::TrackInfo ti = discInterface->GetTrack(0,0);
+	con->fprintf("lba len: %d\n",ti.length_lba);
 }
 
 void PsxCore::UpdateVideoBuffer(void* target)
diff --git a/PsxHawk.Core/PsxCore.h b/PsxHawk.Core/PsxCore.h
index f67f77cd3c..a05d9681d6 100644
--- a/PsxHawk.Core/PsxCore.h
+++ b/PsxHawk.Core/PsxCore.h
@@ -3,16 +3,16 @@
 
 #include <stdio.h>
 
+class DiscInterface;
+
 class PsxCore
 {
 public:
-	PsxCore(void* _opaque)
-		: opaque(_opaque)
-	{
-	}
+	PsxCore(void* _opaque);
 
 private:
 	void* opaque;
+	DiscInterface* discInterface;
 
 public:
 	void* Construct(void* ManagedOpaque)
diff --git a/PsxHawk.Core/PsxHawk.Core.vcproj b/PsxHawk.Core/PsxHawk.Core.vcproj
index 768f4e671e..bfbea211d7 100644
--- a/PsxHawk.Core/PsxHawk.Core.vcproj
+++ b/PsxHawk.Core/PsxHawk.Core.vcproj
@@ -49,6 +49,7 @@
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				DebugInformationFormat="4"
+				CallingConvention="0"
 			/>
 			<Tool
 				Name="VCManagedResourceCompilerTool"
@@ -124,6 +125,7 @@
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				DebugInformationFormat="3"
+				CallingConvention="0"
 			/>
 			<Tool
 				Name="VCManagedResourceCompilerTool"