-Copied over the functions I need to implement for GB, leaving FrameAdvance and GetVideoBuffer unimplemented until I fully understand them.

BizHawk.Emulation/BizHawk.Emulation.csproj

@@ -111,6 +111,7 @@
     <Compile Include="Consoles\Coleco\VDP.ModeTMS.cs" />
     <Compile Include="Consoles\Coleco\VDP.Tables.cs" />
     <Compile Include="Consoles\GB\Graphics.cs" />
+    <Compile Include="Consoles\GB\Input.cs" />
     <Compile Include="Consoles\GB\MemoryMap.cs" />
     <Compile Include="Consoles\GB\GB.cs" />
     <Compile Include="Consoles\Nintendo\NES\APU.cs" />

BizHawk.Emulation/Consoles/GB/GB.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using BizHawk.Emulation.CPUs.Z80GB;
 
 /*
@@ -8,9 +9,12 @@ contains several comments from the articles.
 */
 namespace BizHawk.Emulation.Consoles.GB
 {
-	public partial class GB/* : IEmulator, IVideoProvider */
+	public partial class GB : IEmulator, IVideoProvider
 	{
 		private Z80 CPU;
+		private int lagCount = 0;
+		private bool isLagFrame = false;
+		private IList<MemoryDomain> memoryDomains;
 
 		public GB(GameInfo game, byte[] rom, bool skipBIOS)
 		{
@@ -18,11 +22,72 @@ namespace BizHawk.Emulation.Consoles.GB
 			HardReset();
 		}
 
+		public int BufferWidth { get { return 160; } }
+		public int BufferHeight { get { return 144; } }
+		public int BackgroundColor { get { return 0; } }
+		public CoreInputComm CoreInputComm { get; set; }
+		public CoreOutputComm CoreOutputComm { get; private set; }
+		public bool DeterministicEmulation { get; set; }
+		public void Dispose() { }
+		public int Frame { get; set; }
+
+		public void FrameAdvance(bool render)
+		{
+			throw new NotImplementedException();
+		}
+
 		public void HardReset()
 		{
 			CPU = new CPUs.Z80GB.Z80();
 			CPU.ReadMemory = ReadMemory;
 			CPU.WriteMemory = WriteMemory;
 		}
+
+		public int[] GetVideoBuffer()
+		{
+			throw new NotImplementedException();
+		}
+
+		public IList<MemoryDomain> MemoryDomains { get { return memoryDomains; } }
+		public bool IsLagFrame { get { return isLagFrame; } }
+		public int LagCount { get { return lagCount; } set { lagCount = value; } }
+		public void LoadStateBinary(System.IO.BinaryReader reader)
+		{
+			throw new NotImplementedException();
+		}
+
+		public void LoadStateText(System.IO.TextReader reader)
+		{
+			throw new NotImplementedException();
+		}
+
+		public MemoryDomain MainMemory { get { return memoryDomains[0]; } }
+
+		public void ResetFrameCounter()
+		{
+			Frame = 0;
+		}
+
+		public byte[] SaveRam { get { throw new NotImplementedException(); } }
+		public bool SaveRamModified { get { return false; } set { } }
+
+		public void SaveStateBinary(System.IO.BinaryWriter writer)
+		{
+			throw new NotImplementedException();
+		}
+
+		public byte[] SaveStateBinary()
+		{
+			return new byte[0];
+		}
+
+		public void SaveStateText(System.IO.TextWriter writer)
+		{
+			throw new NotImplementedException();
+		}
+
+		public ISoundProvider SoundProvider { get { return new NullEmulator(); } }
+		public string SystemId { get { return "GB"; } }
+		public IVideoProvider VideoProvider { get { return this; } }
 	}
 }

BizHawk.Emulation/Consoles/GB/Input.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BizHawk.Emulation.Consoles.GB
+{
+	public partial class GB
+	{
+		public static readonly ControllerDefinition GbController = new ControllerDefinition
+		{
+			Name = "Gameboy Controller",
+			BoolButtons =
+			{
+				"Up", "Down", "Left", "Right", "A", "B", "Select", "Start"
+			}
+		};
+
+		public ControllerDefinition ControllerDefinition { get { return GbController; } }
+		public IController Controller { get; set; }
+	}
+}