diff --git a/Gameboy.Player.Godot/BitmapTextureRect.cs b/Gameboy.Player.Godot/BitmapTextureRect.cs
new file mode 100644
index 0000000..a3fcbe6
--- /dev/null
+++ b/Gameboy.Player.Godot/BitmapTextureRect.cs
@@ -0,0 +1,77 @@
+using Godot;
+using System;
+using Qkmaxware.Emulators.Gameboy;
+using Qkmaxware.Emulators.Gameboy.Hardware;
+using LcdBitmap = Qkmaxware.Emulators.Gameboy.Hardware.Bitmap;
+
+namespace Qkmaxware.Emulators.Gameboy.Player;
+
+public partial class BitmapTextureRect : TextureRect {
+
+	[Export]
+	[ExportGroup("Colour Pallet/Background")]
+	public Color BgWhite = new Color(1, 1, 1);
+	[Export]
+	public Color BgLightGrey = new Color(0.6f, 0.6f, 0.6f);
+	[Export]
+	public Color BgDarkGrey = new Color(0.3f, 0.3f, 0.3f);
+	[Export]
+	public Color BgBlack = new Color(0, 0, 0);
+
+	[Export]
+	[ExportGroup("Colour Pallet/Object 0")]
+	public Color Obj0White = new Color(1, 1, 1);
+	[Export]
+	public Color Obj0LightGrey = new Color(0.6f, 0.6f, 0.6f);
+	[Export]
+	public Color Obj0DarkGrey = new Color(0.3f, 0.3f, 0.3f);
+	[Export]
+	public Color Obj0Black = new Color(0, 0, 0);
+
+	[Export]
+	[ExportGroup("Colour Pallet/Object 1")]
+	public Color Obj1White = new Color(1, 1, 1);
+	[Export]
+	public Color Obj1LightGrey = new Color(0.6f, 0.6f, 0.6f);
+	[Export]
+	public Color Obj1DarkGrey = new Color(0.3f, 0.3f, 0.3f);
+	[Export]
+	public Color Obj1Black = new Color(0, 0, 0);
+
+	private ImageTexture texture;
+
+    public void Redraw(LcdBitmap bmp) {
+		var pixels = Image.Create(width: bmp.Width, height: bmp.Height, useMipmaps: false, format: Image.Format.Rgb8);
+	
+		for (var col = 0; col < bmp.Height; col++) {
+			for (var row = 0; row < bmp.Width; row++) {
+				pixels.SetPixel(row, col, bmp[row, col] switch {
+					ColourPallet.BackgroundDark => BgBlack,
+					ColourPallet.Object0Dark => Obj0Black,
+					ColourPallet.Object1Dark => Obj1Black,
+
+					ColourPallet.BackgroundMedium => BgDarkGrey,
+					ColourPallet.Object0Medium => Obj0DarkGrey,
+					ColourPallet.Object1Medium => Obj1DarkGrey,
+
+					ColourPallet.BackgroundLight => BgLightGrey,
+					ColourPallet.Object0Light => Obj0LightGrey,
+					ColourPallet.Object1Light => Obj1LightGrey,
+
+					ColourPallet.BackgroundWhite => BgWhite,
+					ColourPallet.Object0White => Obj0White,
+					ColourPallet.Object1White => Obj1White,
+
+					_ => BgBlack,
+				});
+			}
+		}
+		
+		if (texture is null) {
+			texture = ImageTexture.CreateFromImage(pixels);
+		} else {
+			texture.Update(pixels);
+		}
+		this.Texture = texture;
+	}
+}
\ No newline at end of file
diff --git a/Gameboy.Player.Godot/Debuggers/Disassembler.cs b/Gameboy.Player.Godot/Debuggers/Disassembler.cs
new file mode 100644
index 0000000..df2f2c1
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/Disassembler.cs
@@ -0,0 +1,37 @@
+using Godot;
+using System;
+using System.Linq;
+using Qkmaxware.Emulators.Gameboy.Hardware;
+using Qkmaxware.Vm.LR35902;
+
+namespace Qkmaxware.Emulators.Gameboy.Player;
+
+public partial class Disassembler : Control {
+
+	[Export] public TextureRenderer Player;
+
+	private RichTextLabel text;
+
+	private Qkmaxware.Vm.LR35902.Disassembler disassembler = new Qkmaxware.Vm.LR35902.Disassembler(Endianness.LittleEndian);
+
+	// Called when the node enters the scene tree for the first time.
+	public override void _Ready() {
+		text = this.GetNode<RichTextLabel>("ScrollContainer/RichTextLabel");
+	}
+
+	public void Refresh() {
+		text.Text = string.Empty;
+		var cart = Player?.Console?.GetCartridge();
+		if (cart is not null) {
+			var bytes = cart.GetBytes().Skip(0x014F); // End of header at: 0x014F = 335
+			foreach (var instr in disassembler.Disassemble(bytes)) {
+				if (instr.Operation is not null) {
+					var argString = string.Join(' ', instr.Arguments.Select(x => x.ToString("X4")));
+					text.Text += $"0x{instr.Address:X4}    {instr.Operation.Name} {argString}" + System.Environment.NewLine;
+				} else {
+					text.Text += $"0x{instr.Address:X4}    {instr.Opcode:X2}";
+				}
+			}
+		}
+	}
+}
diff --git a/Gameboy.Player.Godot/Debuggers/Disassembler.tscn b/Gameboy.Player.Godot/Debuggers/Disassembler.tscn
new file mode 100644
index 0000000..0d78ea3
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/Disassembler.tscn
@@ -0,0 +1,43 @@
+[gd_scene load_steps=3 format=3 uid="uid://cs764ed0jafqu"]
+
+[ext_resource type="Script" path="res://Debuggers/Disassembler.cs" id="1_bgd2f"]
+[ext_resource type="Texture2D" uid="uid://divrqb47wvwvt" path="res://reload.png" id="3_5ffph"]
+
+[node name="Disassembler" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_bgd2f")
+
+[node name="ScrollContainer" type="ScrollContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = 59.0
+grow_horizontal = 2
+grow_vertical = 2
+horizontal_scroll_mode = 0
+
+[node name="RichTextLabel" type="RichTextLabel" parent="ScrollContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+fit_content = true
+autowrap_mode = 0
+
+[node name="Reload" type="Button" parent="."]
+layout_mode = 1
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -95.0
+offset_bottom = 31.0
+grow_horizontal = 0
+text = "Reload"
+icon = ExtResource("3_5ffph")
+expand_icon = true
+
+[connection signal="pressed" from="Reload" to="." method="Refresh"]
diff --git a/Gameboy.Player.Godot/Debuggers/Map Debugger.tscn b/Gameboy.Player.Godot/Debuggers/Map Debugger.tscn
new file mode 100644
index 0000000..3440c53
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/Map Debugger.tscn	
@@ -0,0 +1,40 @@
+[gd_scene load_steps=4 format=3 uid="uid://2uytp7r2ouod"]
+
+[ext_resource type="Script" path="res://Debuggers/MapDebugger.cs" id="1_gnyfy"]
+[ext_resource type="Script" path="res://BitmapTextureRect.cs" id="2_0ayh7"]
+[ext_resource type="Texture2D" uid="uid://divrqb47wvwvt" path="res://reload.png" id="3_fd1ro"]
+
+[node name="Map Debugger" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_gnyfy")
+
+[node name="Rect" type="TextureRect" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = 34.0
+grow_horizontal = 2
+grow_vertical = 2
+expand_mode = 1
+stretch_mode = 5
+script = ExtResource("2_0ayh7")
+
+[node name="Reload" type="Button" parent="."]
+layout_mode = 1
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -95.0
+offset_bottom = 31.0
+grow_horizontal = 0
+text = "Reload"
+icon = ExtResource("3_fd1ro")
+expand_icon = true
+
+[connection signal="pressed" from="Reload" to="." method="Refresh"]
diff --git a/Gameboy.Player.Godot/Debuggers/MapDebugger.cs b/Gameboy.Player.Godot/Debuggers/MapDebugger.cs
new file mode 100644
index 0000000..41323d6
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/MapDebugger.cs
@@ -0,0 +1,36 @@
+using Godot;
+using System;
+using Qkmaxware.Emulators.Gameboy.Hardware;
+
+namespace Qkmaxware.Emulators.Gameboy.Player;
+
+public enum MapType {
+	Background, Window
+}
+
+public partial class MapDebugger : Control {
+
+	[Export] public TextureRenderer Player;
+	[Export] public MapType Map; 
+
+	private BitmapTextureRect rect;
+
+	// Called when the node enters the scene tree for the first time.
+	public override void _Ready() {
+		this.rect = GetNode<BitmapTextureRect>("Rect");
+	}
+
+	public void Refresh() {
+		var ppu = Player?.Console?.GPU;
+		if (ppu is IDebuggablePpu debug) {
+			switch (Map) {
+				case MapType.Background:
+					rect?.Redraw(debug.BackgroundMap.ToBitmap());
+					break;
+				case MapType.Window:
+					rect?.Redraw(debug.WindowMap.ToBitmap());
+					break;
+			}
+		}
+	}
+}
diff --git a/Gameboy.Player.Godot/Debuggers/PaletteDebugger.cs b/Gameboy.Player.Godot/Debuggers/PaletteDebugger.cs
new file mode 100644
index 0000000..b347190
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/PaletteDebugger.cs
@@ -0,0 +1,101 @@
+using Godot;
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using Qkmaxware.Emulators.Gameboy.Hardware;
+
+namespace Qkmaxware.Emulators.Gameboy.Player;
+
+public partial class PaletteDebugger : Control {
+
+	[Export] public TextureRenderer Player;
+
+	private ColorRect[][] bg;
+	private ColorRect[][] obj;
+
+	// Called when the node enters the scene tree for the first time.
+	public override void _Ready() {
+		bg = new ColorRect[1][];
+		bg[0] = new ColorRect[4];
+		for (var i = 0; i < 4; i++) {
+			var b00 = Convert.ToString(i, 2).PadLeft(2, '0');
+			bg[0][i] = this.GetNode<ColorRect>("ScrollContainer/HSplitContainer/Background/VBoxContainer/HBoxContainer/"+b00);
+		}
+
+		obj = new ColorRect[2][];
+		obj[0] = new ColorRect[4];
+		obj[1] = new ColorRect[4];
+		for (var i = 0; i < 4; i++) {
+			var b00 = Convert.ToString(i, 2).PadLeft(2, '0');
+			obj[0][i] = this.GetNode<ColorRect>("ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer1/"+b00);
+			obj[1][i] = this.GetNode<ColorRect>("ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer2/"+b00);
+		}
+	}
+
+	public void Refresh() {
+		var ppu = Player?.Console?.GPU;
+		if (ppu is IDebuggablePpu debug) {
+			HashSet<ColourPallet> bgcolours = new HashSet<ColourPallet>();
+			foreach (var palette in debug.BackgroundPalettes.Zip(bg)) {
+				foreach (var pair in palette.First.Zip(palette.Second)) {
+					var palettedColour = pair.First;
+					var rgb = palettedColour switch {
+						ColourPallet.BackgroundDark => new Color(0,0,0,1),
+						ColourPallet.Object0Dark => new Color(0,0,0,1),
+						ColourPallet.Object1Dark => new Color(0,0,0,1),
+
+						ColourPallet.BackgroundMedium => new Color(0.3f,0.3f,0.3f,1),
+						ColourPallet.Object0Medium => new Color(0.3f,0.3f,0.3f,1),
+						ColourPallet.Object1Medium => new Color(0.3f,0.3f,0.3f,1),
+
+						ColourPallet.BackgroundLight => new Color(0.6f,0.6f,0.6f,1),
+						ColourPallet.Object0Light => new Color(0.6f,0.6f,0.6f,1),
+						ColourPallet.Object1Light => new Color(0.6f,0.6f,0.6f,1),
+
+						ColourPallet.BackgroundWhite => new Color(1f,1f,1f,1),
+						ColourPallet.Object0White => new Color(1f,1f,1f,1),
+						ColourPallet.Object1White => new Color(1f,1f,1f,1),
+
+						_ => new Color(0,0,0,1),
+					};
+					bgcolours.Add(palettedColour);
+					pair.Second.Color = rgb;
+				}
+			}
+			if (bgcolours.Count < 1) {
+				GD.PushError("Background palette is mono-colour.");
+			}
+
+			HashSet<ColourPallet> objcolours = new HashSet<ColourPallet>();
+			foreach (var palette in debug.ObjectPalettes.Zip(obj)) {
+				foreach (var pair in palette.First.Zip(palette.Second)) {
+					var palettedColour = pair.First;
+					var rgb = palettedColour switch {
+						ColourPallet.BackgroundDark => new Color(0,0,0,1),
+						ColourPallet.Object0Dark => new Color(0,0,0,1),
+						ColourPallet.Object1Dark => new Color(0,0,0,1),
+
+						ColourPallet.BackgroundMedium => new Color(0.3f,0.3f,0.3f,1),
+						ColourPallet.Object0Medium => new Color(0.3f,0.3f,0.3f,1),
+						ColourPallet.Object1Medium => new Color(0.3f,0.3f,0.3f,1),
+
+						ColourPallet.BackgroundLight => new Color(0.6f,0.6f,0.6f,1),
+						ColourPallet.Object0Light => new Color(0.6f,0.6f,0.6f,1),
+						ColourPallet.Object1Light => new Color(0.6f,0.6f,0.6f,1),
+
+						ColourPallet.BackgroundWhite => new Color(1f,1f,1f,1),
+						ColourPallet.Object0White => new Color(1f,1f,1f,1),
+						ColourPallet.Object1White => new Color(1f,1f,1f,1),
+
+						_ => new Color(0,0,0,1),
+					};
+					objcolours.Add(palettedColour);
+					pair.Second.Color = rgb;
+				}
+			}
+			if (objcolours.Count < 1) {
+				GD.PushError("Object palette is mono-colour.");
+			}
+		}
+	}
+}
diff --git a/Gameboy.Player.Godot/Debuggers/PaletteDebugger.tscn b/Gameboy.Player.Godot/Debuggers/PaletteDebugger.tscn
new file mode 100644
index 0000000..c80f7e1
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/PaletteDebugger.tscn
@@ -0,0 +1,128 @@
+[gd_scene load_steps=3 format=3 uid="uid://b5psa1c0pvkya"]
+
+[ext_resource type="Script" path="res://Debuggers/PaletteDebugger.cs" id="1_sor31"]
+[ext_resource type="Texture2D" uid="uid://divrqb47wvwvt" path="res://reload.png" id="2_wsgsr"]
+
+[node name="Palette Debugger" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_sor31")
+
+[node name="ScrollContainer" type="ScrollContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = 58.0
+grow_horizontal = 2
+grow_vertical = 2
+horizontal_scroll_mode = 0
+
+[node name="HSplitContainer" type="HSplitContainer" parent="ScrollContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+split_offset = 512
+
+[node name="Background" type="MarginContainer" parent="ScrollContainer/HSplitContainer"]
+layout_mode = 2
+theme_override_constants/margin_left = 10
+theme_override_constants/margin_top = 10
+theme_override_constants/margin_right = -10
+theme_override_constants/margin_bottom = -10
+
+[node name="VBoxContainer" type="VBoxContainer" parent="ScrollContainer/HSplitContainer/Background"]
+layout_mode = 2
+
+[node name="Label" type="Label" parent="ScrollContainer/HSplitContainer/Background/VBoxContainer"]
+layout_mode = 2
+text = "Backgrounds"
+
+[node name="HBoxContainer" type="HBoxContainer" parent="ScrollContainer/HSplitContainer/Background/VBoxContainer"]
+layout_mode = 2
+
+[node name="00" type="ColorRect" parent="ScrollContainer/HSplitContainer/Background/VBoxContainer/HBoxContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="01" type="ColorRect" parent="ScrollContainer/HSplitContainer/Background/VBoxContainer/HBoxContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="10" type="ColorRect" parent="ScrollContainer/HSplitContainer/Background/VBoxContainer/HBoxContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="11" type="ColorRect" parent="ScrollContainer/HSplitContainer/Background/VBoxContainer/HBoxContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="Objects" type="MarginContainer" parent="ScrollContainer/HSplitContainer"]
+layout_mode = 2
+theme_override_constants/margin_left = 10
+theme_override_constants/margin_top = 10
+theme_override_constants/margin_right = -10
+theme_override_constants/margin_bottom = -10
+
+[node name="VBoxContainer" type="VBoxContainer" parent="ScrollContainer/HSplitContainer/Objects"]
+layout_mode = 2
+
+[node name="Label" type="Label" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer"]
+layout_mode = 2
+text = "Objects"
+
+[node name="HBoxContainer1" type="HBoxContainer" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer"]
+layout_mode = 2
+
+[node name="00" type="ColorRect" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer1"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="01" type="ColorRect" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer1"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="10" type="ColorRect" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer1"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="11" type="ColorRect" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer1"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="HBoxContainer2" type="HBoxContainer" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer"]
+layout_mode = 2
+
+[node name="00" type="ColorRect" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer2"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="01" type="ColorRect" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer2"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="10" type="ColorRect" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer2"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="11" type="ColorRect" parent="ScrollContainer/HSplitContainer/Objects/VBoxContainer/HBoxContainer2"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+
+[node name="Reload" type="Button" parent="."]
+layout_mode = 1
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -95.0
+offset_bottom = 31.0
+grow_horizontal = 0
+text = "Reload"
+icon = ExtResource("2_wsgsr")
+expand_icon = true
+
+[connection signal="pressed" from="Reload" to="." method="Refresh"]
diff --git a/Gameboy.Player.Godot/Debuggers/Sprite Debugger.tscn b/Gameboy.Player.Godot/Debuggers/Sprite Debugger.tscn
new file mode 100644
index 0000000..94d6b0f
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/Sprite Debugger.tscn	
@@ -0,0 +1,925 @@
+[gd_scene load_steps=5 format=3 uid="uid://yis4daekext1"]
+
+[ext_resource type="Texture2D" uid="uid://cip0keh15srys" path="res://cart.png" id="1_44h0a"]
+[ext_resource type="Script" path="res://Debuggers/SpriteDebugger.cs" id="1_kpo0v"]
+[ext_resource type="Script" path="res://BitmapTextureRect.cs" id="2_hqqgw"]
+[ext_resource type="Texture2D" uid="uid://divrqb47wvwvt" path="res://reload.png" id="4_26upw"]
+
+[node name="Sprite Debugger" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_kpo0v")
+
+[node name="ScrollContainer" type="ScrollContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = 59.0
+grow_horizontal = 2
+grow_vertical = 2
+horizontal_scroll_mode = 0
+
+[node name="GridContainer" type="GridContainer" parent="ScrollContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_constants/v_separation = 24
+columns = 10
+
+[node name="Sprite 0" type="TextureRect" parent="ScrollContainer/GridContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+size_flags_horizontal = 3
+texture = ExtResource("1_44h0a")
+expand_mode = 1
+stretch_mode = 5
+script = ExtResource("2_hqqgw")
+
+[node name="Label" type="Label" parent="ScrollContainer/GridContainer/Sprite 0"]
+layout_mode = 1
+anchors_preset = 12
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = -1.0
+offset_bottom = 22.0
+grow_horizontal = 2
+grow_vertical = 0
+text = "0"
+horizontal_alignment = 1
+
+[node name="Sprite 1" type="TextureRect" parent="ScrollContainer/GridContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+size_flags_horizontal = 3
+texture = ExtResource("1_44h0a")
+expand_mode = 1
+stretch_mode = 5
+script = ExtResource("2_hqqgw")
+
+[node name="Label" type="Label" parent="ScrollContainer/GridContainer/Sprite 1"]
+layout_mode = 1
+anchors_preset = 12
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = -1.0
+offset_bottom = 22.0
+grow_horizontal = 2
+grow_vertical = 0
+text = "0"
+horizontal_alignment = 1
+
+[node name="Sprite 2" type="TextureRect" parent="ScrollContainer/GridContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+size_flags_horizontal = 3
+texture = ExtResource("1_44h0a")
+expand_mode = 1
+stretch_mode = 5
+script = ExtResource("2_hqqgw")
+
+[node name="Label" type="Label" parent="ScrollContainer/GridContainer/Sprite 2"]
+layout_mode = 1
+anchors_preset = 12
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = -1.0
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+layout_mode = 2
+size_flags_horizontal = 3
+texture = ExtResource("1_44h0a")
+expand_mode = 1
+stretch_mode = 5
+script = ExtResource("2_hqqgw")
+
+[node name="Label" type="Label" parent="ScrollContainer/GridContainer/Sprite 37"]
+layout_mode = 1
+anchors_preset = 12
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = -1.0
+offset_bottom = 22.0
+grow_horizontal = 2
+grow_vertical = 0
+text = "0"
+horizontal_alignment = 1
+
+[node name="Sprite 38" type="TextureRect" parent="ScrollContainer/GridContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+size_flags_horizontal = 3
+texture = ExtResource("1_44h0a")
+expand_mode = 1
+stretch_mode = 5
+script = ExtResource("2_hqqgw")
+
+[node name="Label" type="Label" parent="ScrollContainer/GridContainer/Sprite 38"]
+layout_mode = 1
+anchors_preset = 12
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = -1.0
+offset_bottom = 22.0
+grow_horizontal = 2
+grow_vertical = 0
+text = "0"
+horizontal_alignment = 1
+
+[node name="Sprite 39" type="TextureRect" parent="ScrollContainer/GridContainer"]
+custom_minimum_size = Vector2(64, 64)
+layout_mode = 2
+size_flags_horizontal = 3
+texture = ExtResource("1_44h0a")
+expand_mode = 1
+stretch_mode = 5
+script = ExtResource("2_hqqgw")
+
+[node name="Label" type="Label" parent="ScrollContainer/GridContainer/Sprite 39"]
+layout_mode = 1
+anchors_preset = 12
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = -1.0
+offset_bottom = 22.0
+grow_horizontal = 2
+grow_vertical = 0
+text = "0"
+horizontal_alignment = 1
+
+[node name="Reload" type="Button" parent="."]
+layout_mode = 1
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -95.0
+offset_bottom = 31.0
+grow_horizontal = 0
+text = "Reload"
+icon = ExtResource("4_26upw")
+expand_icon = true
+
+[connection signal="pressed" from="Reload" to="." method="Refresh"]
diff --git a/Gameboy.Player.Godot/Debuggers/SpriteDebugger.cs b/Gameboy.Player.Godot/Debuggers/SpriteDebugger.cs
new file mode 100644
index 0000000..1faf2f6
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/SpriteDebugger.cs
@@ -0,0 +1,46 @@
+using Godot;
+using System;
+using System.Linq;
+using Qkmaxware.Emulators.Gameboy.Hardware;
+
+namespace Qkmaxware.Emulators.Gameboy.Player;
+
+public partial class SpriteDebugger : Control {
+
+	[Export] public TextureRenderer Player;
+
+	private BitmapTextureRect[] spriteTextures;
+
+	// Called when the node enters the scene tree for the first time.
+	public override void _Ready() {
+		spriteTextures = new BitmapTextureRect[40];
+		for (var i = 0; i < spriteTextures.Length; i++) {
+			var texture = this.GetNode<BitmapTextureRect>("ScrollContainer/GridContainer/Sprite " + i);
+			var label = texture.GetNode<Label>("Label");
+			label.Text = i.ToString();
+			spriteTextures[i] = texture;
+		}
+	}
+
+	public void Refresh() {
+		var ppu = Player?.Console?.GPU;
+		if (ppu is IDebuggablePpu debug) {
+			foreach (var pair in debug.Sprites.Zip(spriteTextures)) {
+				var sprite = pair.First;
+				var tile = debug.Tiles.ElementAtOrDefault(sprite.TileNumber);
+				var texture = pair.Second;
+
+				var image = tile.ToBitmap();
+				if (image.Height != 8 || image.Width != 8) {
+					GD.Print("Mismatched image dimensions");
+				}
+				texture.Redraw(
+					tile.ToBitmap(
+						flipX: sprite.FlipX == SpriteSpan.XOrientation.Flipped,
+						flipY: sprite.FlipY == SpriteSpan.YOrientation.Flipped
+					)
+				);
+			}
+		}
+	}
+}
diff --git a/Gameboy.Player.Godot/Debuggers/Tile Debugger.TileTemplate.tscn b/Gameboy.Player.Godot/Debuggers/Tile Debugger.TileTemplate.tscn
new file mode 100644
index 0000000..c7889b6
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/Tile Debugger.TileTemplate.tscn	
@@ -0,0 +1,10 @@
+[gd_scene load_steps=2 format=3 uid="uid://0jxwbr6l750m"]
+
+[ext_resource type="Script" path="res://BitmapTextureRect.cs" id="1_80e0p"]
+
+[node name="TileTemplate" type="TextureRect"]
+visible = false
+custom_minimum_size = Vector2(64, 64)
+expand_mode = 1
+stretch_mode = 5
+script = ExtResource("1_80e0p")
diff --git a/Gameboy.Player.Godot/Debuggers/Tile Debugger.tscn b/Gameboy.Player.Godot/Debuggers/Tile Debugger.tscn
new file mode 100644
index 0000000..70e0390
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/Tile Debugger.tscn	
@@ -0,0 +1,43 @@
+[gd_scene load_steps=4 format=3 uid="uid://ca3d3pani0rrj"]
+
+[ext_resource type="Script" path="res://Debuggers/TileDebugger.cs" id="1_gbx3v"]
+[ext_resource type="PackedScene" uid="uid://0jxwbr6l750m" path="res://Debuggers/Tile Debugger.TileTemplate.tscn" id="2_3xqvo"]
+[ext_resource type="Texture2D" uid="uid://divrqb47wvwvt" path="res://reload.png" id="4_i77dr"]
+
+[node name="Tile Debugger" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_gbx3v")
+TileTemplate = ExtResource("2_3xqvo")
+
+[node name="ScrollContainer" type="ScrollContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = 59.0
+grow_horizontal = 2
+grow_vertical = 2
+horizontal_scroll_mode = 0
+
+[node name="HFlowContainer" type="HFlowContainer" parent="ScrollContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="Reload" type="Button" parent="."]
+layout_mode = 1
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -95.0
+offset_bottom = 31.0
+grow_horizontal = 0
+text = "Reload"
+icon = ExtResource("4_i77dr")
+expand_icon = true
+
+[connection signal="pressed" from="Reload" to="." method="Refresh"]
diff --git a/Gameboy.Player.Godot/Debuggers/TileDebugger.cs b/Gameboy.Player.Godot/Debuggers/TileDebugger.cs
new file mode 100644
index 0000000..82e92b3
--- /dev/null
+++ b/Gameboy.Player.Godot/Debuggers/TileDebugger.cs
@@ -0,0 +1,38 @@
+using Godot;
+using System;
+using System.Linq;
+using Qkmaxware.Emulators.Gameboy.Hardware;
+
+namespace Qkmaxware.Emulators.Gameboy.Player;
+
+public partial class TileDebugger : Control {
+
+	[Export] public TextureRenderer Player;
+
+	private HFlowContainer container;
+	[Export]
+	public PackedScene TileTemplate;
+
+	// Called when the node enters the scene tree for the first time.
+	public override void _Ready() {
+		container = GetNode<HFlowContainer>("ScrollContainer/HFlowContainer");
+	}
+
+	// Called every frame. 'delta' is the elapsed time since the previous frame.
+	public void Refresh() {
+		foreach (Node node in container.GetChildren()) {
+			container.RemoveChild(node);
+			node.QueueFree();
+		}
+		
+		var ppu = Player?.Console?.GPU;
+		if (ppu is IDebuggablePpu debug) {
+			foreach (var tile in debug.Tiles) {
+				var spawned = TileTemplate.Instantiate<BitmapTextureRect>();
+				spawned.Visible = true;
+				spawned.Redraw(tile.ToBitmap());
+				container.AddChild(spawned);
+			}
+		}
+	}
+}
diff --git a/Gameboy.Player.Godot/Gameboy.Player.Godot.csproj b/Gameboy.Player.Godot/Gameboy.Player.Godot.csproj
index c05b56b..5f2fe48 100644
--- a/Gameboy.Player.Godot/Gameboy.Player.Godot.csproj
+++ b/Gameboy.Player.Godot/Gameboy.Player.Godot.csproj
@@ -1,6 +1,7 @@
 <Project Sdk="Godot.NET.Sdk/4.2.1">
   <ItemGroup>
     <ProjectReference Include="..\Gameboy\Gameboy.csproj" />
+    <ProjectReference Include="..\Qkmaxware.Vm.LR35902\Qkmaxware.Vm.LR35902.csproj" />
   </ItemGroup>
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
diff --git a/Gameboy.Player.Godot/Gameboy.tscn b/Gameboy.Player.Godot/Gameboy.tscn
index 1b5a888..0927a72 100644
--- a/Gameboy.Player.Godot/Gameboy.tscn
+++ b/Gameboy.Player.Godot/Gameboy.tscn
@@ -1,12 +1,19 @@
-[gd_scene load_steps=8 format=3 uid="uid://bytv8v3jd4m0l"]
+[gd_scene load_steps=15 format=3 uid="uid://bytv8v3jd4m0l"]
 
 [ext_resource type="Script" path="res://TextureRenderer.cs" id="1_hfp5s"]
 [ext_resource type="Texture2D" uid="uid://dfkwdfgk0dp8n" path="res://icon.svg" id="1_ptiq5"]
+[ext_resource type="PackedScene" uid="uid://yis4daekext1" path="res://Debuggers/Sprite Debugger.tscn" id="3_1xhtv"]
+[ext_resource type="PackedScene" uid="uid://2uytp7r2ouod" path="res://Debuggers/Map Debugger.tscn" id="3_8v8ku"]
 [ext_resource type="Texture2D" uid="uid://cip0keh15srys" path="res://cart.png" id="3_gvrte"]
+[ext_resource type="Theme" uid="uid://dcduu766csudy" path="res://Theme.tres" id="3_kw20t"]
+[ext_resource type="Texture2D" uid="uid://bw2t0i8lwy22o" path="res://grabber.svg" id="3_w3ofc"]
+[ext_resource type="PackedScene" uid="uid://b5psa1c0pvkya" path="res://Debuggers/PaletteDebugger.tscn" id="4_80mls"]
 [ext_resource type="Texture2D" uid="uid://byxxvldruom6j" path="res://play.png" id="4_lwet3"]
 [ext_resource type="Texture2D" uid="uid://cm332so38crqs" path="res://pause.png" id="5_5clxm"]
 [ext_resource type="Script" path="res://FpsCounter.cs" id="5_rtd4o"]
 [ext_resource type="Texture2D" uid="uid://d0dpxbrvr2bo7" path="res://stop.png" id="6_cecoo"]
+[ext_resource type="PackedScene" uid="uid://ca3d3pani0rrj" path="res://Debuggers/Tile Debugger.tscn" id="7_ny0ae"]
+[ext_resource type="PackedScene" uid="uid://cs764ed0jafqu" path="res://Debuggers/Disassembler.tscn" id="9_q1hjn"]
 
 [node name="Gameboy" type="Control"]
 layout_mode = 3
@@ -15,12 +22,14 @@ anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
+theme = ExtResource("3_kw20t")
 
 [node name="LCD" type="TextureRect" parent="."]
 layout_mode = 1
 anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
+offset_bottom = -31.0
 grow_horizontal = 2
 grow_vertical = 2
 texture = ExtResource("1_ptiq5")
@@ -28,6 +37,57 @@ expand_mode = 1
 stretch_mode = 5
 script = ExtResource("1_hfp5s")
 
+[node name="Debug Menu" type="VSplitContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_top = 48.0
+grow_horizontal = 2
+grow_vertical = 2
+theme = ExtResource("3_kw20t")
+theme_override_icons/grabber = ExtResource("3_w3ofc")
+split_offset = 550
+
+[node name="Empty" type="Control" parent="Debug Menu"]
+layout_mode = 2
+mouse_filter = 2
+
+[node name="Debuggers" type="TabContainer" parent="Debug Menu"]
+layout_mode = 2
+theme = ExtResource("3_kw20t")
+tab_focus_mode = 0
+
+[node name="Colour Palettes" parent="Debug Menu/Debuggers" node_paths=PackedStringArray("Player") instance=ExtResource("4_80mls")]
+layout_mode = 2
+Player = NodePath("../../../LCD")
+
+[node name="Sprites" parent="Debug Menu/Debuggers" node_paths=PackedStringArray("Player") instance=ExtResource("3_1xhtv")]
+visible = false
+layout_mode = 2
+Player = NodePath("../../../LCD")
+
+[node name="Tiles" parent="Debug Menu/Debuggers" node_paths=PackedStringArray("Player") instance=ExtResource("7_ny0ae")]
+visible = false
+layout_mode = 2
+Player = NodePath("../../../LCD")
+
+[node name="Background Map" parent="Debug Menu/Debuggers" node_paths=PackedStringArray("Player") instance=ExtResource("3_8v8ku")]
+visible = false
+layout_mode = 2
+Player = NodePath("../../../LCD")
+
+[node name="Window Map" parent="Debug Menu/Debuggers" node_paths=PackedStringArray("Player") instance=ExtResource("3_8v8ku")]
+visible = false
+layout_mode = 2
+Player = NodePath("../../../LCD")
+Map = 1
+
+[node name="Disassembler" parent="Debug Menu/Debuggers" node_paths=PackedStringArray("Player") instance=ExtResource("9_q1hjn")]
+visible = false
+layout_mode = 2
+Player = NodePath("../../../LCD")
+
 [node name="Open ROM" type="Button" parent="."]
 layout_mode = 0
 offset_right = 48.0
diff --git a/Gameboy.Player.Godot/TextureRenderer.cs b/Gameboy.Player.Godot/TextureRenderer.cs
index 18818b7..7758b4f 100644
--- a/Gameboy.Player.Godot/TextureRenderer.cs
+++ b/Gameboy.Player.Godot/TextureRenderer.cs
@@ -8,48 +8,18 @@
 
 namespace Qkmaxware.Emulators.Gameboy.Player;
 
-public partial class TextureRenderer : TextureRect {
+public partial class TextureRenderer : BitmapTextureRect {
 
 	public enum RendererState {
 		Stopped, Paused, Playing
 	}
 	private RendererState State {get; set;} = RendererState.Stopped;
 	public bool IsPlaying => State == RendererState.Playing;
-
-	[Export]
-	[ExportGroup("Colour Pallet/Background")]
-	public Color BgWhite = new Color(1, 1, 1);
-	[Export]
-	public Color BgLightGrey = new Color(0.6f, 0.6f, 0.6f);
-	[Export]
-	public Color BgDarkGrey = new Color(0.3f, 0.3f, 0.3f);
-	[Export]
-	public Color BgBlack = new Color(0, 0, 0);
-
-	[Export]
-	[ExportGroup("Colour Pallet/Object 0")]
-	public Color Obj0White = new Color(1, 1, 1);
-	[Export]
-	public Color Obj0LightGrey = new Color(0.6f, 0.6f, 0.6f);
-	[Export]
-	public Color Obj0DarkGrey = new Color(0.3f, 0.3f, 0.3f);
-	[Export]
-	public Color Obj0Black = new Color(0, 0, 0);
-
-	[Export]
-	[ExportGroup("Colour Pallet/Object 1")]
-	public Color Obj1White = new Color(1, 1, 1);
-	[Export]
-	public Color Obj1LightGrey = new Color(0.6f, 0.6f, 0.6f);
-	[Export]
-	public Color Obj1DarkGrey = new Color(0.3f, 0.3f, 0.3f);
-	[Export]
-	public Color Obj1Black = new Color(0, 0, 0);
 	
 	private Gameboy gb = new Gameboy();
 
-	private Image pixels;
-	private ImageTexture texture;
+	public Gameboy Console => gb;
+
 	private LcdBitmap intro;
 	private LcdBitmap white;
 
@@ -163,40 +133,4 @@ public void Stop() {
 			}
 		}
 	}
-
-	public void Redraw(Qkmaxware.Emulators.Gameboy.Hardware.Bitmap bmp) {
-		if (pixels is null) {
-			pixels = Image.Create(width: Gpu.LCD_WIDTH, height: Gpu.LCD_HEIGHT, useMipmaps: false, format: Image.Format.Rgb8);
-		}
-		for (var col = 0; col < Gpu.LCD_HEIGHT; col++) {
-			for (var row = 0; row < Gpu.LCD_WIDTH; row++) {
-				pixels.SetPixel(row, col, bmp[row, col] switch {
-					ColourPallet.BackgroundDark => BgBlack,
-					ColourPallet.Object0Dark => Obj0Black,
-					ColourPallet.Object1Dark => Obj1Black,
-
-					ColourPallet.BackgroundMedium => BgDarkGrey,
-					ColourPallet.Object0Medium => Obj0DarkGrey,
-					ColourPallet.Object1Medium => Obj1DarkGrey,
-
-					ColourPallet.BackgroundLight => BgLightGrey,
-					ColourPallet.Object0Light => Obj0LightGrey,
-					ColourPallet.Object1Light => Obj1LightGrey,
-
-					ColourPallet.BackgroundWhite => BgWhite,
-					ColourPallet.Object0White => Obj0White,
-					ColourPallet.Object1White => Obj1White,
-
-					_ => BgBlack,
-				});
-			}
-		}
-		
-		if (texture is null) {
-			texture = ImageTexture.CreateFromImage(pixels);
-		} else {
-			texture.Update(pixels);
-		}
-		this.Texture = texture;
-	}
 }
diff --git a/Gameboy.Player.Godot/Theme.tres b/Gameboy.Player.Godot/Theme.tres
new file mode 100644
index 0000000..8675474
--- /dev/null
+++ b/Gameboy.Player.Godot/Theme.tres
@@ -0,0 +1,40 @@
+[gd_resource type="Theme" load_steps=8 format=3 uid="uid://dcduu766csudy"]
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_4axgg"]
+bg_color = Color(0.262745, 0.639216, 0.858824, 1)
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_mxsf8"]
+bg_color = Color(0.105882, 0.105882, 0.105882, 1)
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_ijqs4"]
+bg_color = Color(0.105882, 0.105882, 0.105882, 1)
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_ek4ao"]
+content_margin_left = 10.0
+content_margin_right = 10.0
+bg_color = Color(0.0392157, 0.0392157, 0.0392157, 1)
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_0wyvc"]
+content_margin_left = 10.0
+content_margin_right = 10.0
+bg_color = Color(0.262745, 0.639216, 0.858824, 1)
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_uw56f"]
+content_margin_left = 10.0
+content_margin_right = 10.0
+bg_color = Color(0.105882, 0.105882, 0.105882, 1)
+border_width_top = 3
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_rr1t3"]
+content_margin_left = 10.0
+content_margin_right = 10.0
+bg_color = Color(0.0705882, 0.0705882, 0.0705882, 1)
+
+[resource]
+Button/styles/hover = SubResource("StyleBoxFlat_4axgg")
+Button/styles/normal = SubResource("StyleBoxFlat_mxsf8")
+TabContainer/styles/panel = SubResource("StyleBoxFlat_ijqs4")
+TabContainer/styles/tab_disabled = SubResource("StyleBoxFlat_ek4ao")
+TabContainer/styles/tab_hovered = SubResource("StyleBoxFlat_0wyvc")
+TabContainer/styles/tab_selected = SubResource("StyleBoxFlat_uw56f")
+TabContainer/styles/tab_unselected = SubResource("StyleBoxFlat_rr1t3")
diff --git a/Gameboy.Player.Godot/grabber.svg b/Gameboy.Player.Godot/grabber.svg
new file mode 100644
index 0000000..90a60d3
--- /dev/null
+++ b/Gameboy.Player.Godot/grabber.svg
@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   sodipodi:docname="grabber.svg"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   id="svg8"
+   version="1.1"
+   viewBox="0 0 33.542 5.546"
+   height="5.546mm"
+   width="33.542mm">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     inkscape:window-maximized="1"
+     inkscape:window-y="-8"
+     inkscape:window-x="-8"
+     inkscape:window-height="987"
+     inkscape:window-width="1680"
+     showgrid="false"
+     inkscape:document-rotation="0"
+     inkscape:current-layer="layer1"
+     inkscape:document-units="mm"
+     inkscape:cy="35.58645"
+     inkscape:cx="56.818922"
+     inkscape:zoom="5.6"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0.0"
+     borderopacity="1.0"
+     bordercolor="#666666"
+     pagecolor="#ffffff"
+     id="base" />
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     id="layer1"
+     inkscape:groupmode="layer"
+     inkscape:label="Layer 1">
+    <rect
+       ry="2.4054258"
+       y="0"
+       x="-2.220446e-16"
+       height="5.5458426"
+       width="33.542328"
+       id="rect833"
+       style="fill:#808080;stroke-width:0.999997;stroke-linecap:round;stroke-linejoin:round" />
+    <rect
+       ry="0.60135639"
+       y="1.1358948"
+       x="2.3386097"
+       height="1.2027128"
+       width="28.865108"
+       id="rect835"
+       style="fill:#4d4d4d;stroke:none;stroke-width:0.999997;stroke-linecap:round;stroke-linejoin:round" />
+    <rect
+       style="fill:#4d4d4d;stroke:none;stroke-width:0.999997;stroke-linecap:round;stroke-linejoin:round"
+       id="rect835-0"
+       width="28.865108"
+       height="1.2027128"
+       x="2.3386097"
+       y="3.2525604"
+       ry="0.60135639" />
+  </g>
+</svg>
diff --git a/Gameboy.Player.Godot/grabber.svg.import b/Gameboy.Player.Godot/grabber.svg.import
new file mode 100644
index 0000000..8a906e0
--- /dev/null
+++ b/Gameboy.Player.Godot/grabber.svg.import
@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bw2t0i8lwy22o"
+path="res://.godot/imported/grabber.svg-dbd06281eaa5d66f819219af7ac906c3.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://grabber.svg"
+dest_files=["res://.godot/imported/grabber.svg-dbd06281eaa5d66f819219af7ac906c3.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false
diff --git a/Gameboy.Player.Godot/reload.png b/Gameboy.Player.Godot/reload.png
new file mode 100644
index 0000000..ca3b98e
Binary files /dev/null and b/Gameboy.Player.Godot/reload.png differ
diff --git a/Gameboy.Player.Godot/reload.png.import b/Gameboy.Player.Godot/reload.png.import
new file mode 100644
index 0000000..f74724f
--- /dev/null
+++ b/Gameboy.Player.Godot/reload.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://divrqb47wvwvt"
+path="res://.godot/imported/reload.png-17f917f262bb5696bd39267f6e625492.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://reload.png"
+dest_files=["res://.godot/imported/reload.png-17f917f262bb5696bd39267f6e625492.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
diff --git a/Gameboy.Test/Gameboy.Test.csproj b/Gameboy.Test/Gameboy.Test.csproj
index 5dc1e80..79e731b 100644
--- a/Gameboy.Test/Gameboy.Test.csproj
+++ b/Gameboy.Test/Gameboy.Test.csproj
@@ -21,6 +21,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <EmbeddedResource Include="Roms/*.gb" />
     <EmbeddedResource Include="Roms/instructions/*.gb" />
     <EmbeddedResource Include="Data/*.json" />
     <EmbeddedResource Include="Data/opcode_tests/*.json" />
diff --git a/Gameboy.Test/GbTests.cs b/Gameboy.Test/GbTests.cs
index 4b018a6..852c41e 100644
--- a/Gameboy.Test/GbTests.cs
+++ b/Gameboy.Test/GbTests.cs
@@ -17,6 +17,66 @@ public Gameboy MakeGB(out StringWriter stdout) {
         return gb;
     }
 
+    public void AssertState(ConsoleState expected, ConsoleState actual, string? message = null) {
+        try {
+            // Compare CPU state
+            if (expected.Cpu is not null && actual.Cpu is not null) {
+                Assert.AreEqual(expected.Cpu.Pc, actual.Cpu.Pc);
+                Assert.AreEqual(expected.Cpu.Sp, actual.Cpu.Sp);
+                Assert.AreEqual(expected.Cpu.A, actual.Cpu.A);
+                Assert.AreEqual(expected.Cpu.B, actual.Cpu.B);
+                Assert.AreEqual(expected.Cpu.C, actual.Cpu.C);
+                Assert.AreEqual(expected.Cpu.D, actual.Cpu.D);
+                Assert.AreEqual(expected.Cpu.E, actual.Cpu.E);
+                Assert.AreEqual(expected.Cpu.F, actual.Cpu.F);
+                Assert.AreEqual(expected.Cpu.Hi, actual.Cpu.Hi);
+                Assert.AreEqual(expected.Cpu.Lo, actual.Cpu.Lo);
+                Assert.AreEqual(expected.Cpu.Ime, actual.Cpu.Ime);
+            } else if (expected.Cpu is not null && actual.Cpu is null) {
+                Assert.Fail("Expecting a CPU state, but actual state is null.");
+            } else if (expected.Cpu is null && actual.Cpu is not null) {
+                Assert.Fail("Expecting a null CPU state, but actual contains CPU state info.");
+            }
+
+            // Compare GPU state
+            if (expected.Ppu is not null && actual.Ppu is not null) {
+                Assert.AreEqual(expected.Ppu.Lcdc, actual.Ppu.Lcdc);
+                Assert.AreEqual(expected.Ppu.Stat, actual.Ppu.Stat);
+                Assert.AreEqual(expected.Ppu.ViewportX, actual.Ppu.ViewportX);
+                Assert.AreEqual(expected.Ppu.ViewportY, actual.Ppu.ViewportY);
+                Assert.AreEqual(expected.Ppu.WindowX, actual.Ppu.WindowX);
+                Assert.AreEqual(expected.Ppu.WindowY, actual.Ppu.WindowY);
+                Assert.AreEqual(expected.Ppu.Lyc, actual.Ppu.Lyc);
+                Assert.AreEqual(expected.Ppu.Scanline, actual.Ppu.Scanline);
+
+                Assert.AreEqual(expected.Ppu.OamBytes, actual.Ppu.OamBytes);
+                Assert.AreEqual(expected.Ppu.VramBytes, actual.Ppu.VramBytes);
+            } else if (expected.Ppu is not null && actual.Ppu is null) {
+                Assert.Fail("Expecting a GPU state, but actual state is null.");
+            } else if (expected.Ppu is null && actual.Ppu is not null) {
+                Assert.Fail("Expecting a null GPU state, but actual contains GPU state info.");
+            }
+
+            // Compare Cart RAM state
+            if (expected.Cart is not null && actual.Cart is not null) {
+                Assert.AreEqual(expected.Cart.RamBanks?.Length ?? 0, actual.Cart.RamBanks?.Length ?? 0);
+                if (expected.Cart.RamBanks is not null && actual.Cart.RamBanks is not null) {
+                    for (var i = 0; i < expected.Cart.RamBanks.Length; i++) {
+                        Assert.AreEqual(expected.Cart.RamBanks[i], actual.Cart.RamBanks[i], "Ram Bank " + i + " doesn't match");
+                    }
+                }
+            } else if (expected.Cart is not null && actual.Cart is null) {
+                Assert.Fail("Expecting a Cart state, but actual state is null.");
+            } else if (expected.Cart is null && actual.Cart is not null) {
+                Assert.Fail("Expecting a null Cart state, but actual contains Cart state info.");
+            }
+        } catch (UnitTestAssertException outcome) {
+            if (message is null)
+                throw;
+            throw new Exception(message, outcome);
+        }
+    }
+
     public Hardware.Cartridge ReadCart(string filename) {
         var assembly = typeof(IsaTests).GetTypeInfo().Assembly;
         foreach (var name in assembly.GetManifestResourceNames()) {
diff --git a/Gameboy.Test/VersionUpdateTests.cs b/Gameboy.Test/VersionUpdateTests.cs
new file mode 100644
index 0000000..169e0b0
--- /dev/null
+++ b/Gameboy.Test/VersionUpdateTests.cs
@@ -0,0 +1,35 @@
+using System.Reflection;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Qkmaxware.Vm.LR35902;
+
+namespace Qkmaxware.Emulators.Gameboy.Test;
+
+[TestClass]
+
+public partial class VersionUpdateTests : GbTests {
+
+    [TestMethod]
+    public void TestGpuToPpu() {
+        var game = ReadCart("bgbtest");
+        Gameboy normal = new Gameboy(gpu: new Hardware.Gpu());
+        normal.LoadCartridge(game);
+        Gameboy newppu = new Gameboy(gpu: new Hardware.Ppu());
+        newppu.LoadCartridge(game);
+
+        var test_time = TimeSpan.FromSeconds(30);
+        var fps = 60;
+        var frames = test_time.TotalSeconds * fps;
+
+        AssertState(normal.GetState(), newppu.GetState(), "Frame " + 0 + " differs between implementations");
+        var frame = 0;
+        for (; frame <= frames; frame++) {
+            // Step both systems
+            normal.DispatchUntilBufferFlush();
+            newppu.DispatchUntilBufferFlush();
+
+            // Compare system states
+            AssertState(normal.GetState(), newppu.GetState(), "Frame " + frame + " differs between implementations");
+        }
+    }
+    
+}
\ No newline at end of file
diff --git a/Gameboy/GameBoy.cs b/Gameboy/GameBoy.cs
index 3daac26..03650b1 100644
--- a/Gameboy/GameBoy.cs
+++ b/Gameboy/GameBoy.cs
@@ -13,33 +13,33 @@ public class Gameboy {
     private CartridgeAdapter cart {get; init;}
     public SerialConnection Serial {get; init;}
 
-    public Gameboy() {
+    public Gameboy(IPpu? gpu = null, Input? input = null, CartridgeAdapter? cartReader = null, Hardware.Timer? timer = null, SerialConnection? serialIO = null) {
         mmu = new MemoryMap();
 
         Hardrive onboard = new Hardrive();
-        GPU = new Gpu();
-        Input = new Input();
-        timer = new Hardware.Timer();
-        cart = new CartridgeAdapter();
-        SerialConnection sysio = new SerialConnection(null, null);
+        this.GPU = gpu ?? new Ppu();
+        this.Input = input ?? new Input();
+        this.timer = timer ?? new Hardware.Timer();
+        this.cart = cartReader ?? new CartridgeAdapter();
+        SerialConnection sysio = serialIO ?? new SerialConnection(null, null);
         this.Serial = sysio;
 
         mmu.SetMappedComponent(MemoryMap.INTERNAL_RAM, onboard);
         mmu.SetMappedComponent(MemoryMap.ZRAM, onboard);
-        
-        mmu.SetMappedComponent(MemoryMap.JOYSTICK, Input);
-        mmu.SetMappedComponent(MemoryMap.TIMER, timer);
-        
-        mmu.SetMappedComponent(MemoryMap.OAM, GPU);
-        mmu.SetMappedComponent(MemoryMap.VRAM, GPU);
-        mmu.SetMappedComponent(MemoryMap.GPU, GPU);
-        
-        mmu.SetMappedComponent(MemoryMap.ROM_BANK_0, cart);
-        mmu.SetMappedComponent(MemoryMap.ROM_BANK_1, cart);
-        mmu.SetMappedComponent(MemoryMap.EXTERNAL_RAM, cart);
-        
-        mmu.SetMappedComponent(MemoryMap.SERIALIO, sysio);
-        
+
+        mmu.SetMappedComponent(MemoryMap.JOYSTICK, this.Input);
+        mmu.SetMappedComponent(MemoryMap.TIMER, this.timer);
+
+        mmu.SetMappedComponent(MemoryMap.OAM, this.GPU);
+        mmu.SetMappedComponent(MemoryMap.VRAM, this.GPU);
+        mmu.SetMappedComponent(MemoryMap.GPU, this.GPU);
+
+        mmu.SetMappedComponent(MemoryMap.ROM_BANK_0, this.cart);
+        mmu.SetMappedComponent(MemoryMap.ROM_BANK_1, this.cart);
+        mmu.SetMappedComponent(MemoryMap.EXTERNAL_RAM, this.cart);
+
+        mmu.SetMappedComponent(MemoryMap.SERIALIO, this.Serial);
+
         CPU = new Cpu(mmu);
     }
 
@@ -116,6 +116,9 @@ public ConsoleState GetState() {
         cpu.Pc = this.CPU.Registry.pc();
         cpu.Ime = this.CPU.Registry.ime();
 
+        PpuState ppu = this.GPU.GetState();
+        state.Ppu = ppu;
+
         CartState cart = new CartState();
         state.Cart = cart;
         cart.RamBanks = this.cart?.ActiveController?.GetRamBanks()?.Select(bytes => Convert.ToBase64String(bytes))?.ToArray() ?? new string[0];
diff --git a/Gameboy/State.cs b/Gameboy/State.cs
index 8048116..257a8f7 100644
--- a/Gameboy/State.cs
+++ b/Gameboy/State.cs
@@ -14,11 +14,26 @@ public class CpuState {
     public int Ime {get; set;}
 }
 
+public class PpuState {
+    public int Lcdc;
+    public int Stat;
+    public int ViewportX;
+    public int ViewportY;
+    public int WindowX;
+    public int WindowY;
+    public int Lyc;
+    public int Scanline;
+
+    public string? OamBytes;
+    public string? VramBytes;
+}
+
 public class CartState {
     public string[]? RamBanks;
 }
 
 public class ConsoleState {
     public CpuState? Cpu {get; set;}
+    public PpuState? Ppu {get; set;}
     public CartState? Cart {get; set;}
 }
\ No newline at end of file
diff --git a/Gameboy/hardware/game/Cartidge.cs b/Gameboy/hardware/game/Cartidge.cs
index bfaec49..a311ded 100644
--- a/Gameboy/hardware/game/Cartidge.cs
+++ b/Gameboy/hardware/game/Cartidge.cs
@@ -24,6 +24,8 @@ public bool HasRam(){
         return Info.cartType.HasRam;
     }
     
+    public byte[] GetBytes() => rom;
+
     public int read(int addr){
         if (addr >= 0 && addr < rom.Length) {
             return rom[addr];
diff --git a/Gameboy/hardware/game/controller/Mbc2.cs b/Gameboy/hardware/game/controller/Mbc2.cs
index ffef859..e75bcf0 100644
--- a/Gameboy/hardware/game/controller/Mbc2.cs
+++ b/Gameboy/hardware/game/controller/Mbc2.cs
@@ -35,6 +35,8 @@ public IEnumerable<byte[]> GetRamBanks() {
         yield return GetActiveRam();
     }
 
+    public void UpdateRamBanks(IEnumerable<byte[]> banks) => throw new NotImplementedException();
+
     public int ReadByte(int addr) {
         //ROM BANK 0 (Read Only)
         if(addr >= 0x0000 && addr <= 0x3FFF){
diff --git a/Gameboy/hardware/game/controller/Mbc3.cs b/Gameboy/hardware/game/controller/Mbc3.cs
index 44b37a1..dea77a0 100644
--- a/Gameboy/hardware/game/controller/Mbc3.cs
+++ b/Gameboy/hardware/game/controller/Mbc3.cs
@@ -123,6 +123,7 @@ public bool IsRtcOn(){
     public IEnumerable<byte[]> GetRamBanks() {
         yield return GetActiveRam();
     }
+    public void UpdateRamBanks(IEnumerable<byte[]> banks) => throw new NotImplementedException();
 
     public int ReadByte(int addr)
     {
diff --git a/Gameboy/hardware/game/controller/Mbc5.cs b/Gameboy/hardware/game/controller/Mbc5.cs
index 781a403..ae02de4 100644
--- a/Gameboy/hardware/game/controller/Mbc5.cs
+++ b/Gameboy/hardware/game/controller/Mbc5.cs
@@ -34,6 +34,7 @@ public int GetRomOffset() {
     public IEnumerable<byte[]> GetRamBanks() {
         yield return GetActiveRam();
     }
+    public void UpdateRamBanks(IEnumerable<byte[]> banks) => throw new NotImplementedException();
 
     public int ReadByte(int addr)
     {
diff --git a/Gameboy/hardware/gpu/BackgroundMapSpan.cs b/Gameboy/hardware/gpu/BackgroundMapSpan.cs
new file mode 100644
index 0000000..6080b92
--- /dev/null
+++ b/Gameboy/hardware/gpu/BackgroundMapSpan.cs
@@ -0,0 +1,55 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+public class BackgroundMapSpan {
+    
+    /// <summary>
+    /// The base address in the MMU
+    /// </summary>
+    public int AddressBase {get; private set;}
+    /// <summary>
+    /// The starting index in the vram of this background map
+    /// </summary>
+    public int StartIndex {get; private set;}
+    /// <summary>
+    /// The ending index in the vram for this background map
+    /// </summary>
+    public int EndIndex => StartIndex + 1024; // 32 * 32 bytes
+
+    /// <summary>
+    /// Width of the background map
+    /// </summary>
+    public static readonly int Width = 32;
+    /// <summary>
+    ///  Height of the background map
+    /// </summary>
+    public static readonly int Height = 32;
+
+    private byte[] VramReference;
+
+    public BackgroundMapSpan(int addressBase, int startIndex, byte[] vram) {
+        this.AddressBase = addressBase;
+        this.StartIndex = startIndex;
+        this.VramReference = vram;
+    }
+
+    public byte TileIndexAt(int x, int y) {
+        // Row by row
+        return VramReference[StartIndex + (x + Width * y)];
+    }
+
+    public Bitmap ToBitmap() {
+        var bitmap = new Bitmap(256, 256);
+        var index = 0;
+        for (var row = 0; row < 32; row++) {
+            for (var col = 0; col < 32; col++) {
+                // Only works for method 1 0x8000 method (TODO method 2)
+                var tileIndex = this.TileIndexAt(col, row);
+                TileSpan tile = new TileSpan(0x8000, tileIndex, this.VramReference);
+                var stamp = tile.ToBitmap();
+                bitmap.Stamp(col * 8, row * 8, stamp);
+                index++;
+            }
+        }
+        return bitmap;
+    }
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/Bitmap.cs b/Gameboy/hardware/gpu/Bitmap.cs
index 299a463..5f3752d 100644
--- a/Gameboy/hardware/gpu/Bitmap.cs
+++ b/Gameboy/hardware/gpu/Bitmap.cs
@@ -1,3 +1,4 @@
+using System.Drawing;
 using static Qkmaxware.Emulators.Gameboy.Hardware.ColourPallet;
 namespace Qkmaxware.Emulators.Gameboy.Hardware;
 
@@ -94,6 +95,42 @@ public Bitmap Enlarge (int times) {
         return next;
     }
 
+    public void ToTga(BinaryWriter writer) {
+        // Header
+        byte[] header = new byte[18];
+        header[0] = (byte)0; //ID Length
+        header[1] = (byte)0; //Colour map type (no colour map)
+        header[2] = (byte)2; //Image type (uncompressed true-colour image)
+        // Width (2 bytes)
+        header[12] = (byte)(255 & this.Width);
+        header[13] = (byte)(255 & (this.Width >> 8));
+        // Height (2 bytes)
+        header[14] = (byte)(255 & this.Height);
+        header[15] = (byte)(255 & (this.Height >> 8));
+        header[16] = (byte)24; //Pixel depth
+        header[17] = (byte)32; //
+        writer.Write(header);
+
+        // Body
+        var black = Color.Black;
+        var dark = Color.DarkGray;
+        var light = Color.LightGray;
+        var white = Color.White;
+        var colourMap = new Color[] {
+            black, dark, light, white, // Background
+            black, dark, light, white, // Palette 0
+            black, dark, light, white, // Palette 1
+        };
+        for(int row = 0; row < this.Height; row++) {
+            for(int column = 0; column < this.Width; column++){
+                var c = colourMap[(int)this[column, row]];
+                writer.Write(c.B);
+                writer.Write(c.G);
+                writer.Write(c.R);
+            }
+        }
+    }
+
     public byte[] GetBytes() => this.pixels;
 
     public static readonly Bitmap StampB = new Bitmap(new ColourPallet[,]{
diff --git a/Gameboy/hardware/gpu/Gpu.cs b/Gameboy/hardware/gpu/Gpu.cs
index 2857547..c6eea0c 100644
--- a/Gameboy/hardware/gpu/Gpu.cs
+++ b/Gameboy/hardware/gpu/Gpu.cs
@@ -702,4 +702,21 @@ public int Compare(Sprite? x, Sprite? y) {
             }
         }
     }
+
+    public PpuState GetState() {
+        PpuState state = new PpuState();
+        state.Lcdc = this.ReadByte(0xFF40);
+        state.Stat = this.ReadByte(0xFF41);
+        state.ViewportX = this.ReadByte(0xFF43);
+        state.ViewportY = this.ReadByte(0xFF42);
+        state.WindowX = this.ReadByte(0xFF4B);
+        state.WindowY = this.ReadByte(0xFF4A);
+        state.Lyc = this.ReadByte(0xFF45);
+        state.Scanline = this.ReadByte(0xFF44);
+           
+        state.OamBytes = Convert.ToBase64String(this.oam.Select(x => (byte)x).ToArray());
+        state.VramBytes = Convert.ToBase64String(this.vram.Select(x => (byte)x).ToArray());
+
+        return state; 
+    }
 }
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/IDebuggablePpu.cs b/Gameboy/hardware/gpu/IDebuggablePpu.cs
new file mode 100644
index 0000000..952a0e4
--- /dev/null
+++ b/Gameboy/hardware/gpu/IDebuggablePpu.cs
@@ -0,0 +1,13 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+/// <summary>
+/// Picture processing unit interface with additional debug methods
+/// </summary>
+public interface IDebuggablePpu : IPpu {
+    public IEnumerable<ColourPallet[]> BackgroundPalettes {get;}
+    public IEnumerable<ColourPallet[]> ObjectPalettes {get;} 
+    public IEnumerable<SpriteSpan> Sprites {get;}
+    public IEnumerable<TileSpan> Tiles {get;}
+    public BackgroundMapSpan BackgroundMap {get;}
+    public BackgroundMapSpan WindowMap {get;}
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/IPpu.cs b/Gameboy/hardware/gpu/IPpu.cs
index 5a3535d..6cb81fb 100644
--- a/Gameboy/hardware/gpu/IPpu.cs
+++ b/Gameboy/hardware/gpu/IPpu.cs
@@ -21,4 +21,10 @@ public interface IPpu : IMemorySegment {
     /// </summary>
     /// <param name="step">cpu cycles</param>
     public void Step(int step);
+
+    /// <summary>
+    /// Get the current state of the PPU
+    /// </summary>
+    /// <returns>state</returns>
+    public PpuState GetState();
 }
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/IntCoordinate.cs b/Gameboy/hardware/gpu/IntCoordinate.cs
new file mode 100644
index 0000000..8a10be3
--- /dev/null
+++ b/Gameboy/hardware/gpu/IntCoordinate.cs
@@ -0,0 +1,15 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+/// <summary>
+/// Represents a 2d coordinate with integer components
+/// </summary>
+public struct IntCoordinate {
+    /// <summary>
+    /// The x component
+    /// </summary>
+    public int X {get; set;}
+    /// <summary>
+    /// The y component
+    /// </summary>
+    public int Y {get; set;}
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/LcdControlRegister.cs b/Gameboy/hardware/gpu/LcdControlRegister.cs
new file mode 100644
index 0000000..d4fdfc5
--- /dev/null
+++ b/Gameboy/hardware/gpu/LcdControlRegister.cs
@@ -0,0 +1,65 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+/// <summary>
+/// Different types of sprite sizes
+/// </summary>
+public enum SpriteSize {
+    Short1x1 = 0, Long1x2 = 1
+}
+
+/// <summary>
+/// Tile map location indices
+/// </summary>
+public enum TileMapIndex {
+    Map9800 = 0, Map9C00 = 1
+}
+
+/// <summary>
+/// Tile map selection mode
+/// </summary>
+public enum TileDataSelect {
+    Method8800 = 0, Method8000 = 1
+}
+
+/// <summary>
+/// The LCDC register is one of the most important control registers for the LCD. Each of the 8 bits in this register is a flag which determines which elements are displayed and more.
+/// </summary>
+public struct LcdControlRegister {
+    /// <summary>
+    /// Underlying register value
+    /// </summary>
+    public int Value {get; set;}
+    
+    /// <summary>
+    /// Setting this bit to 0 disables the PPU entirely. The screen is turned off.
+    /// </summary>
+    public bool IsLcdEnabled => (Value & 0b10000000) != 0;
+    /// <summary>
+    /// If set to 1, the Window will use the background map located at $9C00-$9FFF. Otherwise, it uses $9800-$9BFF.
+    /// </summary>
+    public TileMapIndex WindowTileMapIndex => (Value & 0b01000000) != 0 ? TileMapIndex.Map9C00 : TileMapIndex.Map9800;
+    /// <summary>
+    /// Setting this bit to 0 hides the window layer entirely.
+    /// </summary>
+    public bool IsWindowEnabled => (Value & 0b00100000) != 0;
+    /// <summary>
+    /// If set to 1, fetching Tile Data uses the 8000 method. Otherwise, the 8800 method is used.
+    /// </summary>
+    public TileDataSelect TileDataSelect => (Value & 0b00010000) != 0 ? TileDataSelect.Method8000 : TileDataSelect.Method8800;
+    /// <summary>
+    /// If set to 1, the Background will use the background map located at $9C00-$9FFF. Otherwise, it uses $9800-$9BFF.
+    /// </summary>
+    public TileMapIndex BackgroundTileMapIndex => (Value & 0b00001000) != 0 ? TileMapIndex.Map9C00 : TileMapIndex.Map9800;
+    /// <summary>
+    /// If set to 1, sprites are displayed as 1x2 Tile (8x16 pixel) object. Otherwise, they're 1x1 Tile.
+    /// </summary>
+    public SpriteSize SpriteSize => (Value & 0b00000100) != 0 ? SpriteSize.Long1x2 : SpriteSize.Short1x1;
+    /// <summary>
+    /// Sprites are only drawn to screen if this bit is set to 1.
+    /// </summary>
+    public bool IsSpritesEnabled => (Value & 0b00000010) != 0 ;
+    /// <summary>
+    /// If this bit is set to 0, neither Background nor Window tiles are drawn. Sprites are unaffected.
+    /// </summary>
+    public bool IsBackgroundEnabled => (Value & 0b00000001) != 0 ;
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/LcdStatusRegister.cs b/Gameboy/hardware/gpu/LcdStatusRegister.cs
new file mode 100644
index 0000000..2956046
--- /dev/null
+++ b/Gameboy/hardware/gpu/LcdStatusRegister.cs
@@ -0,0 +1,66 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+/// <summary>
+/// Different modes for the picture processing unit
+/// </summary>
+public enum PpuMode {
+    HBlank = 0,
+    VBlank = 1,
+    OamScan = 2,
+    Drawing = 3
+}
+
+/// <summary>
+/// The STAT register contains both information-bits which allow the CPU to determine the status of the PPU, as well as bits which affect the interrupt trigger behavior of the PPU.
+/// </summary>
+public struct LcdStatusRegister {
+    /// <summary>
+    /// Underlying register value
+    /// </summary>
+    public int Value {get; set;}
+
+    /// <summary>
+    /// Setting this bit to 1 enables the "LYC=LY condition" to trigger a STAT interrupt.
+    /// </summary>
+    public bool IsLycLyInterruptEnabled => (Value & 0b01000000) != 0;
+    /// <summary>
+    /// Setting this bit to 1 enables the "mode 2 condition" to trigger a STAT interrupt.
+    /// </summary>
+    public bool IsOamScanInterruptEnabled => (Value & 0b00100000) != 0;
+    /// <summary>
+    /// Setting this bit to 1 enables the "mode 1 condition" to trigger a STAT interrupt.
+    /// </summary>
+    public bool IsVBlankInterruptEnabled => (Value & 0b00010000) != 0;
+    /// <summary>
+    /// Setting this bit to 1 enables the "mode 0 condition" to trigger a STAT interrupt.
+    /// </summary>
+    public bool IsHBlankInterruptEnabled => (Value & 0b00001000) != 0;
+    /// <summary>
+    /// This bit is set by the PPU if the value of the LY register is equal to that of the LYC register.
+    /// </summary>
+    public bool IsLycCoincidentallyLy {
+        get => (Value & 0b0000_0100) != 0;
+        set {
+            var cleared = Value & 0b1111_1011;
+            if (value)
+                cleared |= 0b0000_0100;
+        }
+    }
+    /// <summary>
+    /// These two bits are set by the PPU depending on which mode it is in.
+    /// </summary>
+    public PpuMode Mode {
+        get => (Value & 0b00000011) switch {
+                0 => PpuMode.HBlank,
+                1 => PpuMode.VBlank,
+                2 => PpuMode.OamScan,
+                3 => PpuMode.Drawing,
+                _ => PpuMode.Drawing
+            };
+        set {
+            var ivalue = (int)value;
+            this.Value &= 0b1111_1100;  // Clear last 2 bits
+            this.Value |= ivalue;       // Set last 2 bits
+        }
+    }
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/PaletteRegister.cs b/Gameboy/hardware/gpu/PaletteRegister.cs
new file mode 100644
index 0000000..0234d25
--- /dev/null
+++ b/Gameboy/hardware/gpu/PaletteRegister.cs
@@ -0,0 +1,57 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+public struct PaletteRegister {
+    /// <summary>
+    /// Underlying register value
+    /// </summary>
+    public int Value {get; set;}
+
+    private ColourPallet Black;
+    private ColourPallet DarkGrey;
+    private ColourPallet LightGrey;
+    private ColourPallet White;
+
+    public PaletteRegister(ColourPallet black, ColourPallet dark, ColourPallet light, ColourPallet white) {
+        this.Value = 0;
+        this.Black = black;
+        this.DarkGrey = dark;
+        this.LightGrey = light;
+        this.White = white;
+    }
+
+    public ColourPallet this[int index] {
+        get {
+            int v = (Value >> (index * 2)) & 3; //1,2,3
+            return v switch {
+                0 => White,
+                1 => LightGrey,
+                2 => DarkGrey,
+                3 => Black,
+                _ => Black,
+            };
+        } set {
+            int iValue = value switch {
+                ColourPallet.BackgroundWhite => 0,
+                ColourPallet.Object0White => 0,
+                ColourPallet.Object1White => 0,
+
+                ColourPallet.BackgroundLight => 1,
+                ColourPallet.Object0Light => 1,
+                ColourPallet.Object1Light => 1,
+
+                ColourPallet.BackgroundMedium => 2,
+                ColourPallet.Object0Medium => 2,
+                ColourPallet.Object1Medium => 2,
+
+                ColourPallet.BackgroundDark => 3,
+                ColourPallet.Object0Dark => 3,
+                ColourPallet.Object1Dark => 3,
+                _ => 3
+            };
+            var mask = 0b11 << (index * 2);
+            var inverseMask = ~mask;
+            this.Value &= inverseMask;
+            this.Value |= iValue << (index * 2);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/Ppu.Debug.cs b/Gameboy/hardware/gpu/Ppu.Debug.cs
new file mode 100644
index 0000000..4d6322c
--- /dev/null
+++ b/Gameboy/hardware/gpu/Ppu.Debug.cs
@@ -0,0 +1,31 @@
+using Qkmaxware.Vm.LR35902;
+
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+public partial class Ppu : IPpu { 
+    public IEnumerable<ColourPallet[]> BackgroundPalettes {
+        get {
+            var palette = new ColourPallet[4];
+            for (var i = 0; i < 4; i++) {
+                palette[i] = this.BackgroundPalette[i];
+            }
+            yield return palette;
+        }
+    }
+    public IEnumerable<ColourPallet[]> ObjectPalettes {
+        get {
+            var palette0 = new ColourPallet[4];
+            var palette1 = new ColourPallet[4];
+            for (var i = 0; i < 4; i++) {
+                palette0[i] = this.Object0Palette[i];
+                palette1[i] = this.Object1Palette[i];
+            }
+            yield return palette0;
+            yield return palette1;
+        }
+    }
+    public IEnumerable<SpriteSpan> Sprites => Array.AsReadOnly(sprites);
+    public IEnumerable<TileSpan> Tiles => Array.AsReadOnly(tiles);
+    public BackgroundMapSpan BackgroundMap => LCDC.BackgroundTileMapIndex == TileMapIndex.Map9800 ? Map9800 : Map9C00;
+    public BackgroundMapSpan WindowMap => LCDC.WindowTileMapIndex == TileMapIndex.Map9800 ? Map9800 : Map9C00;
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/Ppu.Render.cs b/Gameboy/hardware/gpu/Ppu.Render.cs
new file mode 100644
index 0000000..2235fc5
--- /dev/null
+++ b/Gameboy/hardware/gpu/Ppu.Render.cs
@@ -0,0 +1,200 @@
+using System.Security.Cryptography.X509Certificates;
+using Qkmaxware.Vm.LR35902;
+
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+public partial class Ppu : IPpu {
+
+    private void flushBuffer() {
+        var temp = this.buffer;
+        this.buffer = Canvas;
+        this.Canvas = temp;
+        HasBufferJustFlushed = true;
+    }
+
+    struct ScanrowPixel {
+        public byte ColourId;
+        public ColourPallet DecodedColour;
+    }
+    ScanrowPixel[] scanrow = new ScanrowPixel[LCD_WIDTH];
+    private void renderScanline() {
+        if(!LCDC.IsLcdEnabled){ 
+            return;
+        }
+
+        if(LCDC.IsBackgroundEnabled) {
+            renderBackgroundLine(this.ScanLineIndex);
+        }
+
+        if (LCDC.IsWindowEnabled) {
+            renderWindowLine(this.ScanLineIndex);
+        }
+        
+        if(LCDC.IsSpritesEnabled){
+            renderSpriteLine(this.ScanLineIndex);
+        }
+
+        shiftPixels(this.ScanLineIndex);
+    }
+
+    // The 8000 method uses $8000 as a base pointer and adds (TILE_NUMBER * 16) to it
+    private TileSpan GetTile8000Method(int index) => this.tiles[index];
+    // The 8800 method uses $9000 as a base pointer and adds (SIGNED_TILE_NUMBER * 16)
+    private TileSpan GetTile8800Method(int index) => this.tiles[256 + index]; // (36864 - 32768) / 16 = 256
+
+    protected int unsignedByteToSigned(int u8){
+        if(u8 > 127)
+            u8 = -((~u8+1)&255);
+        return u8;
+    }
+
+    private void renderBackgroundLine(int scanline) {
+        int background_y = Viewport.Y;
+        int background_x = Viewport.X;
+        var background = this.BackgroundMap;
+
+        var bgPixelY = (background_y + scanline) % 256;  // Handle screen wrapping
+        var tileY = bgPixelY / TileSpan.Height;
+        for (var x = 0; x < LCD_WIDTH; x++) {
+            var bgPixelX = (background_x + x) % 256; // Handle screen wrapping
+            // Determine the tile to access
+            var tileX = bgPixelX / TileSpan.Width;
+            var tileIndex = (int)background.TileIndexAt(tileX, tileY);
+            var tile
+                = LCDC.TileDataSelect == TileDataSelect.Method8800
+                ? GetTile8800Method(unsignedByteToSigned(tileIndex)) 
+                : GetTile8000Method(tileIndex); 
+            // Determine the pixel in the tile to access
+            int pixelX = bgPixelX - tileX * TileSpan.Width;
+            int pixelY = bgPixelY - tileY * TileSpan.Height;
+            // Add it to the buffer
+            var colourIndex = tile[pixelX, pixelY];         // Get the pixel from the tile
+            var colour = BackgroundPalette[colourIndex];    // Get the colour of that pixel from the palette
+            scanrow[x].ColourId = colourIndex;
+            scanrow[x].DecodedColour = colour;
+        }
+    }
+
+    private void renderWindowLine(int scanline) {
+        /*
+        Window is between x = 0 and 166 and y = 0 and 143. 
+        Interestingly, the X coordinate is x – 7 as 7 would be the left side of the LCD. 
+        These coordinate imply that the window is drawn relative to the LCD, not the background.
+        */
+        var windowX = this.Window.X - 7;
+        var windowY = this.Window.Y;
+        var background = this.WindowMap;
+
+        // If the scanline intersects the window
+        if (windowY <= scanline) {
+            // Compute the tile that falls on this scanline
+            var bgPixelY = (scanline - windowY) % 256;
+            var tileY = bgPixelY / TileSpan.Height;
+
+            // Check each pixel on the scanline
+            for (var screenX = 0; screenX < LCD_WIDTH; screenX++) {
+                // Skip pixel if the window is offset to the right
+                if (screenX < windowX)
+                    continue;
+
+                // Convert the coordinate to pixels on the background
+                var bgPixelX = (screenX - windowX) % 256;
+                var tileX = bgPixelX / TileSpan.Width;
+                var tileIndex = (int)background.TileIndexAt(tileX, tileY);
+                var tile
+                    = LCDC.TileDataSelect == TileDataSelect.Method8800
+                    ? GetTile8800Method(unsignedByteToSigned(tileIndex)) 
+                    : GetTile8000Method(tileIndex); 
+
+                // Determine the pixel in the tile to access
+                int pixelX = bgPixelX - tileX * TileSpan.Width;
+                int pixelY = bgPixelY - tileY * TileSpan.Height;
+
+                // Add it to the buffer
+                var colourIndex = tile[pixelX, pixelY];         // Get the pixel from the tile
+                var colour = BackgroundPalette[colourIndex];    // Get the colour of that pixel from the palette
+                scanrow[screenX].ColourId = colourIndex;
+                scanrow[screenX].DecodedColour = colour;
+            }
+        }
+    }
+
+    private void renderSpriteLine(int scanline) {
+        var screenY = scanline;
+        int spritesize = LCDC.SpriteSize == SpriteSize.Long1x2 ? 16 : 8;
+
+        foreach (var sprite in this.sprites_sorted) {
+            // Does the sprite land on the scanline
+            if (!(sprite.YTop <= scanline))
+                continue;
+            if (!(sprite.YTop + spritesize > scanline))
+                continue;
+
+            // Get the tiles
+            var topTile    = LCDC.SpriteSize == SpriteSize.Long1x2 ? this.GetTile8000Method(sprite.TileNumber & 0xFE) : this.GetTile8000Method(sprite.TileNumber);   
+            var bottomTile = LCDC.SpriteSize == SpriteSize.Long1x2 ? this.GetTile8000Method(sprite.TileNumber | 0x01) : null;         
+            if (sprite.FlipY == SpriteSpan.YOrientation.Flipped) {
+                var temp = topTile;                 // If y flipped, swap the top and bottom sprites
+                topTile = bottomTile ?? topTile;
+                bottomTile = topTile;
+            }
+
+            int pixelY = scanline - sprite.YTop; // scanline should be > YTop so this is positive
+            var sampledTile = pixelY < 8 ? topTile : (bottomTile ?? topTile);
+            pixelY = pixelY < 8 ? pixelY : (pixelY - 8);
+
+            // If y flipped, grab the opposite horizontal row
+            if (sprite.FlipY == SpriteSpan.YOrientation.Flipped) {
+                pixelY = (TileSpan.Height - 1) - pixelY; 
+            }
+
+            // Get the colour palette
+            var palette = sprite.PaletteNumber switch {
+                SpriteSpan.PaletteIndex.Zero => this.Object0Palette,
+                SpriteSpan.PaletteIndex.One => this.Object1Palette,
+                _ => this.Object0Palette
+            };
+
+            // Draw the sprite
+            for (var scanX = 0; scanX < TileSpan.Width; scanX++) {
+                // Pixel must be on the screen
+                int screenX = sprite.XLeft + scanX;
+
+                // Pixel must be on the screen to be drawn
+                if(screenX < 0 || screenX >= LCD_WIDTH)
+                    continue;
+
+                // Flip x coordinate if required
+                var pixelX = scanX;
+                if (sprite.FlipX == SpriteSpan.XOrientation.Flipped) {
+                    pixelX = (TileSpan.Width - 1) - scanX;
+                }
+
+                // Get and mix pixel
+                var pixel = sampledTile[pixelX, pixelY];
+                var colour = palette[pixel];
+                mixIn(screenX, pixel, colour, sprite);
+            }
+        }
+    }
+
+    private void mixIn(int x, byte spriteColourIndex, ColourPallet pixelFromSprite, SpriteSpan sprite) {
+        // If the color number of the Sprite Pixel is 0, the Background Pixel is pushed to the LCD.
+        if (spriteColourIndex == 0) {
+            return;
+        }
+        // If the BG-to-OBJ-Priority bit is 1 and the color number of the Background Pixel is anything other than 0, the Background Pixel is pushed to the LCD.
+        if (sprite.Priority == SpriteSpan.DrawPriority.BelowBackground && scanrow[x].ColourId != 0) {
+            return;
+        }
+        // If none of the above conditions apply, the Sprite Pixel is pushed to the LCD.
+        scanrow[x].ColourId = spriteColourIndex;
+        scanrow[x].DecodedColour = pixelFromSprite;
+    }
+
+    private void shiftPixels(int scanline) {
+        for (var i = 0; i < LCD_WIDTH; i++) {
+            this.buffer[i, scanline] = scanrow[i].DecodedColour;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/Ppu.Step.cs b/Gameboy/hardware/gpu/Ppu.Step.cs
new file mode 100644
index 0000000..6b4592f
--- /dev/null
+++ b/Gameboy/hardware/gpu/Ppu.Step.cs
@@ -0,0 +1,106 @@
+using Qkmaxware.Vm.LR35902;
+
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+public partial class Ppu : IPpu {
+
+    private int clock = 0;
+
+    public static readonly int TIME_SCANLINEOAM = 80;
+    public static readonly int TIME_SCANLINEVRAM = 172;
+    public static readonly int TIME_HBLANK = 204;
+    public static readonly int TIME_FULLLINE = TIME_SCANLINEOAM + TIME_SCANLINEVRAM + TIME_HBLANK;
+    public static readonly int TIME_VBLANK = 4560;
+    public static readonly int TIME_FULLFRAME = TIME_FULLLINE*LCD_HEIGHT + TIME_VBLANK;
+
+    public void Step(int step) {
+        ResetStepFlags();
+
+        //If LCD is off, treat it as a permanent VBLANK
+        if(!LCDC.IsLcdEnabled){
+            ScanLineIndex = 0;
+            clock = 0;
+            STAT.Mode = PpuMode.VBlank;
+            return;
+        }
+
+        clock += step;  //Step is in m time not in cycles (t)
+        var oldmode = STAT.Mode;
+
+        switch(oldmode){
+            //In HBlank
+            case PpuMode.HBlank:
+                if(clock >= TIME_HBLANK / 4){
+                    //end of hblank, for last scanline render screen
+                    if(ScanLineIndex == 143){
+                        STAT.Mode = PpuMode.VBlank;
+                        mmu?.RequestInterrupt(MemoryMap.INTERRUPT_VBLANK);
+                        flushBuffer();
+                    } else {
+                        STAT.Mode = PpuMode.OamScan;
+                    }
+                    
+                    ScanLineIndex++;
+                    clock = 0;
+                }
+                break;
+            //In VBlank
+            case PpuMode.VBlank:
+                if(clock >= 114){ //Worth 10 lines
+                    clock = 0;
+                    ScanLineIndex++;
+                    if(ScanLineIndex > 153){
+                        ScanLineIndex = 0;
+                        STAT.Mode = PpuMode.OamScan;  
+                    }
+                }
+                break;
+            //In OAM-read mode
+            case PpuMode.OamScan:
+                if(clock >= TIME_SCANLINEOAM / 4){
+                    clock = 0;
+                    STAT.Mode = PpuMode.Drawing;
+                }
+                break;
+            //VRAM-read mode
+            case PpuMode.Drawing:
+                //Render scanline at end of allotted time
+                if(clock >= TIME_SCANLINEVRAM / 4){
+                    clock = 0;
+                    STAT.Mode = PpuMode.HBlank;
+                    renderScanline();
+                }
+                break;
+        }
+
+        //Mode had changed, do I need to fire an interrupt
+        var newmode = this.STAT.Mode;
+        if(oldmode != newmode){
+            //Moved onto starting to draw the next line's OAM stage
+            if(newmode == PpuMode.OamScan){
+                if(this.STAT.IsOamScanInterruptEnabled){
+                    mmu?.RequestInterrupt(MemoryMap.INTERRUPT_LCDC);
+                } 
+            }
+            //Moved onto starting to draw the next line's VRAM stage
+            else if(newmode == PpuMode.Drawing){
+                if(this.STAT.IsLycLyInterruptEnabled && this.ScanLineIndex == this.LYC){
+                    mmu?.RequestInterrupt(MemoryMap.INTERRUPT_LCDC);
+                }
+            }
+            //Finished a line
+            else if(newmode == PpuMode.HBlank){
+                if(this.STAT.IsHBlankInterruptEnabled){
+                    mmu?.RequestInterrupt(MemoryMap.INTERRUPT_LCDC);
+                }
+            }
+            //Finished drawing the screen
+            else if(newmode == PpuMode.VBlank){
+                if(this.STAT.IsVBlankInterruptEnabled){
+                    mmu?.RequestInterrupt(MemoryMap.INTERRUPT_LCDC);
+                }
+            }
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/Ppu.cs b/Gameboy/hardware/gpu/Ppu.cs
new file mode 100644
index 0000000..c7eb892
--- /dev/null
+++ b/Gameboy/hardware/gpu/Ppu.cs
@@ -0,0 +1,251 @@
+using Qkmaxware.Vm.LR35902;
+
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+public partial class Ppu : IDebuggablePpu { 
+    /// <summary>
+    /// Height of a Game Boy LCD screen in pixels
+    /// </summary>
+    public static readonly int LCD_HEIGHT = 144;
+    /// <summary>
+    /// Width of a Game Boy LCD screen in pixels
+    /// </summary>
+    public static readonly int LCD_WIDTH = 160;
+    /// <summary>
+    /// Number of tiles possible in the VRAM
+    /// </summary>
+    public static readonly int TILE_COUNT = 512;
+    /// <summary>
+    /// Size of the Video RAM (VRAM) in bytes
+    /// </summary>
+    public static readonly int VRAM_SIZE = TILE_COUNT * 16; // 8192
+    /// <summary>
+    /// Number of objects in the Object Attribute Memory
+    /// </summary>
+    public static readonly int OAM_COUNT = 40;
+    /// <summary>
+    /// Size of the Object Attribute Memory in bytes
+    /// </summary>
+    public static readonly int OAM_SIZE = OAM_COUNT * 4;
+
+    /// <summary>
+    /// Canvas containing the rendered image
+    /// </summary>
+    public Bitmap Canvas {get; private set;} = new Bitmap(LCD_WIDTH, LCD_HEIGHT);
+    /// <summary>
+    /// buffer to be written to before a vblank
+    /// </summary>
+    private Bitmap buffer {get; set;} = new Bitmap(LCD_WIDTH, LCD_HEIGHT);
+
+    /// <summary>
+    /// Test if the PPU's buffer has flushed last step
+    /// </summary>
+    public bool HasBufferJustFlushed {get; private set;}
+
+    private MemoryMap? mmu;
+    public void SetMMU(MemoryMap mmu) { this.mmu = mmu; }
+
+    private LcdControlRegister LCDC = new LcdControlRegister();
+    private LcdStatusRegister STAT = new LcdStatusRegister();
+    private PaletteRegister BackgroundPalette = new PaletteRegister(ColourPallet.BackgroundDark, ColourPallet.BackgroundMedium, ColourPallet.BackgroundLight, ColourPallet.BackgroundWhite);
+    private PaletteRegister Object0Palette  = new PaletteRegister(ColourPallet.Object0Dark, ColourPallet.Object0Medium, ColourPallet.Object0Light, ColourPallet.Object0White);
+    private PaletteRegister Object1Palette  = new PaletteRegister(ColourPallet.Object1Dark, ColourPallet.Object1Medium, ColourPallet.Object1Light, ColourPallet.Object1White);
+    int ScanLineIndex = 0;
+    int LYC = 0;
+    private IntCoordinate Viewport = new IntCoordinate();
+    private IntCoordinate Window = new IntCoordinate();
+    private byte[] vram = new byte[VRAM_SIZE];
+    private TileSpan[] tiles = new TileSpan[TILE_COUNT];
+    private BackgroundMapSpan Map9800;
+    private BackgroundMapSpan Map9C00;
+    private byte[] oam = new byte[OAM_SIZE];
+    private SpriteSpan[] sprites = new SpriteSpan[OAM_COUNT];
+    private SpriteSpan[] sprites_sorted = new SpriteSpan[OAM_COUNT];
+
+    public Ppu() {
+        for (var i = 0; i < sprites.Length; i++) {
+            var sprite = new SpriteSpan(i, i*4, this.oam);
+            sprites[i] = sprite;
+            sprites_sorted[i] = sprite;
+        }
+        for (var i = 0; i < tiles.Length; i++) {
+            var tile = new TileSpan(0x8000, i, this.vram);
+            tiles[i] = tile;
+        }
+        Map9800 = new BackgroundMapSpan(0x9800, 0x9800 - 0x8000, this.vram);
+        Map9C00 = new BackgroundMapSpan(0x9C00, 0x9C00 - 0x8000, this.vram);
+    }
+
+    public void Reset() {
+        clock = 0;
+        LYC = 0;
+        ScanLineIndex = 0;
+        LCDC.Value = 0;
+        STAT.Value = 133;
+
+        BackgroundPalette.Value = 0;
+        Object0Palette.Value = 0;
+        Object1Palette.Value = 0;
+
+        Viewport.X = 0; Viewport.Y = 0;
+        Window.X = 0; Window.Y = 0;
+
+        Array.Fill(vram, (byte)0);
+        Array.Fill(oam, (byte)0);
+
+        Canvas.Fill(ColourPallet.BackgroundWhite);
+
+        // Reset flags
+        ResetStepFlags();
+    }
+
+    private void ResetStepFlags() {
+        HasBufferJustFlushed = false;
+    }
+
+    public int ReadByte(int addr) {
+        // VRAM
+        if(addr >= 0x8000 && addr <= 0x9FFF){
+            return this.vram[addr&0x1FFF];
+        }
+
+        //OAM
+        if(addr >= 0xFE00 && addr <= 0xFE9F){
+            return this.oam[addr & 0xFF];
+        }
+        
+        // Registers
+        switch (addr) {
+            case 0xFF40:
+                return this.LCDC.Value;
+            case 0xFF41:
+                return this.STAT.Value;
+            case 0xFF42:    //Scroll Y         
+                return this.Viewport.Y;
+            case 0xFF43:    //Scroll X         
+                return this.Viewport.X;
+            case 0xFF44:    //Current scanline
+                return this.ScanLineIndex;
+            case 0xFF45:    //Raster?
+                return this.LYC;
+            case 0xFF47:    //Background Pallet
+                return this.BackgroundPalette.Value;
+            case 0xFF48:    //Object Pallet 0
+                return this.Object0Palette.Value;
+            case 0xFF49:    //Object Pallet 1
+                return this.Object1Palette.Value;
+            case 0xFF4A:    //Window Y
+                return this.Window.Y;
+            case 0xFF4B:    //Window X
+                return this.Window.X;
+            default:
+                return 0;
+        }
+    }
+
+    public void WriteByte(int addr, int value) {
+        //VRAM
+        if(addr >= 0x8000 && addr <= 0x9FFF){
+            this.vram[addr&0x1FFF] = (byte)value;
+            return;
+        }
+        
+        //OAM
+        if(addr >= 0xFE00 && addr <= 0xFE9F){
+            this.oam[addr & 0xFF] = (byte)value;
+            refreshOam();
+            return;
+        }
+
+        // Registry
+        switch(addr){
+            case 0xFF40:    //LCD Control
+                this.LCDC.Value = value;
+                break;
+            case 0xFF41:    //LCD Status
+                this.STAT.Value = value;
+                break;
+            case 0xFF42:    //Scroll Y         
+                this.Viewport.Y = value;
+                break;
+            case 0xFF43:    //Scroll X         
+                this.Viewport.X = value;
+                break;
+            case 0xFF44:    //Current scanline
+                this.ScanLineIndex = value;
+                break;
+            case 0xFF45:    //Raster?
+                this.LYC = value;
+                break;
+            case 0xFF46:    //Object Attribute Memory OAM Direct Data Transfer
+                for(int i = 0; i < 160; i++){
+                    int v = mmu?.ReadByte((value << 8) + i) ?? 0;
+                    this.oam[i] = (byte)v;
+                }
+                refreshOam();
+                break;
+            case 0xFF47:    //Background Pallet
+                this.BackgroundPalette.Value = value;
+                break;
+            case 0xFF48:    //Object Pallet 0
+                this.Object0Palette.Value = value;
+                break;
+            case 0xFF49:    //Object Pallet 1
+                this.Object1Palette.Value = value;
+                break;
+            case 0xFF4A:    //Window Y
+                this.Window.Y = value;
+                break;
+            case 0xFF4B:    //Window X
+                this.Window.X = value;
+                break;
+        }
+    }
+
+    private void refreshOam() {
+        Array.Sort(sprites_sorted, spriteSorter);
+    }
+
+    private SpriteSorter spriteSorter = new SpriteSorter();
+    private class SpriteSorter : IComparer<SpriteSpan> {
+        public int Compare(SpriteSpan? x, SpriteSpan? y) {
+            if (x is null && y is null)
+                return 0;
+            if (x is null)
+                return 1;
+            if (y is null)
+                return -1;
+
+            if(x.XRight > y.XRight) {
+                return -1;
+            } else if (x.XRight == y.XRight) {
+                if (x.Id > y.Id) {
+                    return -1;
+                } else if (x.Id == y.Id) {
+                    return 0;
+                } else {
+                    return 1;
+                }
+            } else {
+                return 1;
+            }
+        }
+    }
+
+    public PpuState GetState() {
+        PpuState state = new PpuState();
+        state.Lcdc = this.ReadByte(0xFF40);
+        state.Stat = this.ReadByte(0xFF41);
+        state.ViewportX = this.ReadByte(0xFF43);
+        state.ViewportY = this.ReadByte(0xFF42);
+        state.WindowX = this.ReadByte(0xFF4B);
+        state.WindowY = this.ReadByte(0xFF4A);
+        state.Lyc = this.ReadByte(0xFF45);
+        state.Scanline = this.ReadByte(0xFF44);
+           
+        state.OamBytes = Convert.ToBase64String(this.oam);
+        state.VramBytes = Convert.ToBase64String(this.vram);
+
+        return state; 
+    }
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/SpriteSpan.cs b/Gameboy/hardware/gpu/SpriteSpan.cs
new file mode 100644
index 0000000..9ee833c
--- /dev/null
+++ b/Gameboy/hardware/gpu/SpriteSpan.cs
@@ -0,0 +1,103 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+/// <summary>
+/// Wrapper for sprite data extracted from the OAM
+/// </summary>
+public class SpriteSpan {
+    /// <summary>
+    /// Sprite ID number
+    /// </summary>
+    public int Id {get; private set;}
+    /// <summary>
+    /// Byte offset into the OAM for the sprite data
+    /// </summary>
+    public int ByteOffset {get; private set;}
+    /// <summary>
+    /// Reference to the OAM data where the sprite exists
+    /// </summary>
+    private byte[] OamReference;
+
+    /// <summary>
+    /// Y coordinate of the sprite relative to the bottom of a LONG 1x2 sprite
+    /// </summary>
+    public byte YBottom {
+        get => OamReference[ByteOffset + 0];
+        set => OamReference[ByteOffset + 0] = value;
+    }
+
+    /// <summary>
+    /// Y coordinate of the sprite relative to the top of the sprite
+    /// </summary>
+    public byte YTop {
+        get => (byte)((int)OamReference[ByteOffset + 0] - 16);
+        set => OamReference[ByteOffset + 0] = (byte)(value + 16);
+    }
+
+    /// <summary>
+    /// X coordinate of the sprite relative to the right edge of the sprite
+    /// </summary>
+    public byte XRight {
+        get => OamReference[ByteOffset + 1];
+        set => OamReference[ByteOffset + 1] = value;
+    }
+
+    /// <summary>
+    /// X coordinate of the sprite relative to the left edge of the sprite
+    /// </summary>
+    public byte XLeft {
+        get => (byte)((int)OamReference[ByteOffset + 1] - 8);
+        set => OamReference[ByteOffset + 1] = (byte)(value + 8);
+    }
+    
+    /// <summary>
+    /// Tile number to use for the sprite
+    /// </summary>
+    public byte TileNumber {
+        get => OamReference[ByteOffset + 2];
+        set => OamReference[ByteOffset + 2] = value;
+    }
+
+    /// <summary>
+    /// Special property flags
+    /// </summary>
+    public byte Flags {
+        get => OamReference[ByteOffset + 3];
+        set => OamReference[ByteOffset + 3] = value;
+    }
+
+    public enum DrawPriority: byte {
+        AboveBackground = (0), BelowBackground = (1)
+    }
+    public enum XOrientation : byte {
+        Normal=(0), Flipped=(1)
+    }
+    public enum YOrientation: byte {
+        Normal=(0), Flipped=(1)
+    }
+    public enum PaletteIndex : byte {
+        Zero=(0), One=(1)
+    }
+
+    /// <summary>
+    /// Pixel mixing priority
+    /// </summary>
+    public DrawPriority Priority => (Flags & 0b1000_0000) != 0 ? DrawPriority.BelowBackground : DrawPriority.AboveBackground;
+    /// <summary>
+    /// Y orientation
+    /// </summary>
+    public YOrientation FlipY => (Flags & 0b0100_0000) != 0 ? YOrientation.Flipped : YOrientation.Normal;
+    /// <summary>
+    /// X orientation
+    /// </summary>
+    public XOrientation FlipX => (Flags & 0b0010_0000) != 0 ? XOrientation.Flipped : XOrientation.Normal;
+    /// <summary>
+    /// Selected colour palette
+    /// </summary>
+    public PaletteIndex PaletteNumber => (Flags & 0b0001_0000) != 0 ? PaletteIndex.One : PaletteIndex.Zero;
+    
+    public SpriteSpan(int id, int offset, byte[] oam) {
+        this.Id = id;
+        this.ByteOffset = offset;
+        this.OamReference = oam;
+    }
+}
\ No newline at end of file
diff --git a/Gameboy/hardware/gpu/TileMap.cs b/Gameboy/hardware/gpu/TileMap.cs
new file mode 100644
index 0000000..a1a9c65
--- /dev/null
+++ b/Gameboy/hardware/gpu/TileMap.cs
@@ -0,0 +1,2 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
diff --git a/Gameboy/hardware/gpu/TileSpan.cs b/Gameboy/hardware/gpu/TileSpan.cs
new file mode 100644
index 0000000..4470576
--- /dev/null
+++ b/Gameboy/hardware/gpu/TileSpan.cs
@@ -0,0 +1,76 @@
+namespace Qkmaxware.Emulators.Gameboy.Hardware;
+
+/// <summary>
+/// An 8px by 8px tile renderable by the PPU
+/// </summary>
+public class TileSpan {
+    /// <summary>
+    /// Base address for the tile's tilemap
+    /// </summary>
+    public int BaseAddress {get; private set;}
+    /// <summary>
+    /// The index to the tile in a linear array
+    /// </summary>
+    public int TileIndex {get; private set;}
+    /// <summary>
+    /// The actual address of the start of the tile
+    /// </summary>
+    public int TileAddress => BaseAddress + TileIndex * 16;
+    /// <summary>
+    /// A reference to the Vram byte array
+    /// </summary>
+    private byte[] VramReference {get; init;}
+
+    /// <summary>
+    /// Tile width
+    /// </summary>
+    public static readonly int Width = 8;
+    /// <summary>
+    /// Tile height
+    /// </summary>
+    public static readonly int Height = 8;
+
+    public TileSpan (int baseAddr, int tileIndex, byte[] vram) {
+        this.BaseAddress = baseAddr;
+        this.TileIndex = tileIndex;
+        this.VramReference = vram;
+    }
+
+    private static readonly byte Black = 3;
+    private static readonly byte White = 0;
+    private static readonly byte LightGrey = 1;
+    private static readonly byte DarkGrey = 2;
+
+    public byte this [int x, int y] {
+        get {
+            if (x < 0 || x >= Width || y < 0 || y >= Height)
+                return Black;
+            // Compute row
+            var rowOffset = (TileIndex * 16) + (y * 2); // 2 bytes per row
+            // Fetch row parts
+            var firstByte = VramReference[rowOffset];
+            var secondByte = VramReference[rowOffset + 1];
+            // Combine correct bits (first byte is low, 2nd high)
+            var mask = 0b1000_0000 >> x;
+            return (byte)(((firstByte & mask) != 0 ? 0b01 : 0b00) |  ((secondByte & mask) != 0 ? 0b10 : 0b00));
+        }
+    }
+
+    public Bitmap ToBitmap(bool flipX = false, bool flipY = false) {
+        Bitmap bmp = new Bitmap(Width, Height);
+        for (var row = 0; row < Height; row++) {
+            for (var col = 0; col < Width; col++) {
+                var tCol = flipX ? (Width - 1) - col : col;
+                var tRow = flipY ? (Height - 1) - row : row;
+                bmp[col, row] = this[tCol, tRow] switch {
+                    0 => ColourPallet.BackgroundWhite,
+                    1 => ColourPallet.BackgroundLight,
+                    2 => ColourPallet.BackgroundMedium,
+                    3 => ColourPallet.BackgroundDark,
+                    _ => ColourPallet.BackgroundDark
+                };
+            }
+        }
+        return bmp; 
+    }
+}
\ No newline at end of file
diff --git a/Qkmaxware.Vm.LR35902/Disassembler.cs b/Qkmaxware.Vm.LR35902/Disassembler.cs
new file mode 100644
index 0000000..2a6bf60
--- /dev/null
+++ b/Qkmaxware.Vm.LR35902/Disassembler.cs
@@ -0,0 +1,95 @@
+namespace Qkmaxware.Vm.LR35902;
+
+/// <summary>
+/// Disassembled instruction information
+/// </summary>
+public class InstructionInfo {
+    public uint Address {get; set;}
+    public Operation? Operation {get; set;}
+    public byte Opcode {get; set;}
+    public int[] Arguments {get; set;}
+
+    public InstructionInfo(uint address, byte value) {
+        this.Address = address;
+        this.Arguments = new int[0];    
+        this.Opcode = value;
+    }
+    public InstructionInfo(uint address, Operation op, int[] args) {
+        this.Address = address;
+        this.Opcode = (byte)op.Opcode;
+        this.Operation = op;
+        this.Arguments = args;
+    }
+}
+
+/// <summary>
+/// Disassemble compiled binary into assembly instructions
+/// </summary>
+public class Disassembler {
+
+    /// <summary>
+    /// The endianness of the system, used for multi-byte instruction arguments
+    /// </summary>
+    private Endianness Endianness {get; set;}
+
+    /// <summary>
+    /// Create a new disassembler with the given endianness
+    /// </summary>
+    /// <param name="endianness">endianness used for multi-byte instruction arguments</param>
+    public Disassembler(Endianness endianness) {
+        this.Endianness = endianness;
+    }
+
+    /// <summary>
+    /// Disassemble a sequence of compiled bytes in a program
+    /// </summary>
+    /// <param name="bytes">bytes to disassemble</param>
+    /// <returns>list of assembly instructions with arguments</returns>
+    public IEnumerable<InstructionInfo> Disassemble(IEnumerable<byte> bytes) {
+        Cpu cpu = new Cpu(new FlatRam(DataSize.Bytes(0), this.Endianness));
+
+        uint addr = 0u;
+        var enumerator = bytes.GetEnumerator();
+        while (enumerator.MoveNext()) {
+            var opcode = enumerator.Current;
+            Operation? operation;
+            if (!cpu.TryFetchOperation(opcode, out operation)) {
+                yield return new InstructionInfo(addr, opcode);
+                addr++;
+                continue;
+            }
+            addr++;
+
+            int[] args = new int[operation.Arity];
+            for (var i = 0; i < args.Length; i++) {
+                switch (operation.GetArgumentType(i)) {
+                    case ArgT.Byte: {
+                            enumerator.MoveNext();
+                            var value = enumerator.Current;
+                            addr++;
+                            args[i] = value;
+                        }
+                        break;
+                    case ArgT.Short:{
+                            enumerator.MoveNext();
+                            var value1 = (int)enumerator.Current;
+                            addr++;
+                            enumerator.MoveNext();
+                            var value2 = (int)enumerator.Current;
+                            addr++;
+                            if (Endianness == Endianness.LittleEndian) {
+                                args[i] = (value2 << 8) | value1; // Little endian
+                            } else {
+                                args[i] = (value1 << 8) | value2; // Big endian
+                            }
+                        }
+                        break;
+                    default:
+                        throw new ArgumentException("Disassembler doesn't know how to read arguments of this type");
+                }
+            }
+
+            yield return new InstructionInfo(addr, operation, args);
+        }
+    }
+}
\ No newline at end of file