Changes stack pointer behaviour to match the C implementation.

SuperVM.VisualDebugger/MainWindow.xaml

@@ -45,7 +45,7 @@
 			</Button>
 		</ToolBar>
 		<DockPanel>
-			<TabControl DockPanel.Dock="Right" Width="235">
+			<TabControl DockPanel.Dock="Right" Width="251">
 				<TabItem Header="CPU State">
 					<Grid>
 						<Grid.RowDefinitions>
@@ -120,12 +120,29 @@
 					</Grid>
 				</TabItem>
 				<TabItem Header="Output">
-					<TextBox VerticalContentAlignment="Top" Text="{Binding Path=Output}"/>
+					<TextBox 
+						AcceptsTab="True"
+						AcceptsReturn="True"
+						FontFamily="Consolas"
+						VerticalContentAlignment="Top" 
+						Text="{Binding Path=Output}"/>
 				</TabItem>
 				<TabItem Header="Memory" Grid.IsSharedSizeScope="True">
 					<DockPanel>
 						<DataGrid ItemsSource="{Binding Path=Memory}" AutoGenerateColumns="False">
+							<DataGrid.Resources>
+								<Style TargetType="DataGridCell">
+									<Setter Property="FontFamily" Value="Consolas" />
+								</Style>
+							</DataGrid.Resources>
 							<DataGrid.Columns>
+								<DataGridTemplateColumn Header="" IsReadOnly="True" >
+									<DataGridTemplateColumn.CellTemplate>
+										<DataTemplate>
+											<TextBlock Margin="0" Foreground="Gray" TextAlignment="Right" Text="{Binding Path=Offset}"/>
+										</DataTemplate>
+									</DataGridTemplateColumn.CellTemplate>
+								</DataGridTemplateColumn>
 								<DataGridTextColumn Header="+0" Binding="{Binding Path=D0}" />
 								<DataGridTextColumn Header="+1" Binding="{Binding Path=D1}" />
 								<DataGridTextColumn Header="+2" Binding="{Binding Path=D2}" />

SuperVM.VisualDebugger/VirtualMachineModel.cs

@@ -224,6 +224,8 @@ namespace SuperVM.VisualDebugger
 			this.mem = mem;
 			this.offset = offset;
 
+			this.Offset = Convert.ToString(this.offset, 16);
+
 			this.mem.Changed += Mem_Changed;
 		}
 
@@ -237,52 +239,58 @@ namespace SuperVM.VisualDebugger
 			}
 		}
 
-		public byte D0
+		private static string Read(byte val) => Convert.ToString(val, 16).ToUpper().PadLeft(2, '0');
+
+		private static byte Write(string val) => Convert.ToByte(val, 16);
+
+		public string Offset { get; private set; }
+
+		public string D0
 		{
-			get { return this.mem[this.offset + 0]; }
-			set { this.mem[this.offset + 0] = value; }
+			get { return Read(this.mem[this.offset + 0]); }
+			set { this.mem[this.offset + 0] = Write(value); }
 		}
 
-		public byte D1
+		public string D1
 		{
-			get { return this.mem[this.offset + 1]; }
-			set { this.mem[this.offset + 1] = value; }
+			get { return Read(this.mem[this.offset + 1]); }
+			set { this.mem[this.offset + 1] = Write(value); }
 		}
 
-		public byte D2
+		public string D2
 		{
-			get { return this.mem[this.offset + 2]; }
-			set { this.mem[this.offset + 2] = value; }
+			get { return Read(this.mem[this.offset + 2]); }
+			set { this.mem[this.offset + 2] = Write(value); }
 		}
 
-		public byte D3
+		public string D3
 		{
-			get { return this.mem[this.offset + 3]; }
-			set { this.mem[this.offset + 3] = value; }
+			get { return Read(this.mem[this.offset + 3]); }
+			set { this.mem[this.offset + 3] = Write(value); }
 		}
 
-		public byte D4
+		public string D4
 		{
-			get { return this.mem[this.offset + 4]; }
-			set { this.mem[this.offset + 4] = value; }
+			get { return Read(this.mem[this.offset + 4]); }
+			set { this.mem[this.offset + 4] = Write(value); }
 		}
 
-		public byte D5
+		public string D5
 		{
-			get { return this.mem[this.offset + 5]; }
-			set { this.mem[this.offset + 5] = value; }
+			get { return Read(this.mem[this.offset + 5]); }
+			set { this.mem[this.offset + 5] = Write(value); }
 		}
 
-		public byte D6
+		public string D6
 		{
-			get { return this.mem[this.offset + 6]; }
-			set { this.mem[this.offset + 6] = value; }
+			get { return Read(this.mem[this.offset + 6]); }
+			set { this.mem[this.offset + 6] = Write(value); }
 		}
 
-		public byte D7
+		public string D7
 		{
-			get { return this.mem[this.offset + 7]; }
-			set { this.mem[this.offset + 7] = value; }
+			get { return Read(this.mem[this.offset + 7]); }
+			set { this.mem[this.offset + 7] = Write(value); }
 		}
 	}
 }

SuperVM/Process.cs

@@ -29,7 +29,7 @@ namespace SuperVM
 		{
 			checked
 			{
-				this.stack[this.StackPointer++] = value;
+				this.stack[++this.StackPointer] = value;
 			}
 		}
 
@@ -37,11 +37,11 @@ namespace SuperVM
 		{
 			checked
 			{
-				return this.stack[--this.StackPointer];
+				return this.stack[this.StackPointer--];
 			}
 		}
 
-		public uint Peek() => this.stack[this.StackPointer - 1];
+		public uint Peek() => this.stack[this.StackPointer];
 
 		public void Reset()
 		{