dont know how valuable it will be, but just in case.. 16.16 fixed point support

BizHawk.Client.Common/tools/Watch.cs

@@ -13,7 +13,7 @@ namespace BizHawk.Client.Common
 	public abstract class Watch
 	{
 		public enum WatchSize { Byte = 1, Word = 2, DWord = 4, Separator = 0 }
-		public enum DisplayType { Separator, Signed, Unsigned, Hex, Binary, FixedPoint_12_4, FixedPoint_20_12, Float }
+		public enum DisplayType { Separator, Signed, Unsigned, Hex, Binary, FixedPoint_12_4, FixedPoint_20_12, FixedPoint_16_16, Float }
 		public enum PreviousType { Original = 0, LastSearch = 1, LastFrame = 2, LastChange = 3 }
 
 		public static string DisplayTypeToString(DisplayType type)
@@ -26,6 +26,8 @@ namespace BizHawk.Client.Common
 					return "Fixed Point 12.4";
 				case DisplayType.FixedPoint_20_12:
 					return "Fixed Point 20.12";
+				case DisplayType.FixedPoint_16_16:
+					return "Fixed Point 16.16";
 			}
 		}
 
@@ -39,6 +41,8 @@ namespace BizHawk.Client.Common
 					return DisplayType.FixedPoint_12_4;
 				case "Fixed Point 20.12":
 					return DisplayType.FixedPoint_20_12;
+				case "Fixed Point 16.16":
+					return DisplayType.FixedPoint_16_16;
 			}
 		}
 
@@ -130,6 +134,8 @@ namespace BizHawk.Client.Common
 						return '1';
 					case DisplayType.FixedPoint_20_12:
 						return '2';
+					case DisplayType.FixedPoint_16_16:
+						return '3';
 					case DisplayType.Float:
 						return 'f';
 				}
@@ -155,6 +161,8 @@ namespace BizHawk.Client.Common
 					return DisplayType.FixedPoint_12_4;
 				case '2':
 					return DisplayType.FixedPoint_20_12;
+				case '3':
+					return DisplayType.FixedPoint_16_16;
 				case 'f':
 					return DisplayType.Float;
 			}
@@ -970,7 +978,7 @@ namespace BizHawk.Client.Common
 			{
 				return new List<DisplayType>
 					{
-					DisplayType.Unsigned, DisplayType.Signed, DisplayType.Hex, DisplayType.FixedPoint_20_12, DisplayType.Float
+					DisplayType.Unsigned, DisplayType.Signed, DisplayType.Hex, DisplayType.FixedPoint_20_12, DisplayType.FixedPoint_16_16, DisplayType.Float
 				};
 			}
 		}
@@ -1003,6 +1011,8 @@ namespace BizHawk.Client.Common
 					return val.ToHexString(8);
 				case DisplayType.FixedPoint_20_12:
 					return string.Format("{0:0.######}", val / 4096.0);
+				case DisplayType.FixedPoint_16_16:
+					return string.Format("{0:0.######}", val / 65536.0);
 				case DisplayType.Float:
 					var bytes = BitConverter.GetBytes(val);
 					var _float = BitConverter.ToSingle(bytes, 0);
@@ -1061,6 +1071,17 @@ namespace BizHawk.Client.Common
 							return false;
 						}
 
+						break;
+					case DisplayType.FixedPoint_16_16:
+						if (value.IsFixedPoint())
+						{
+							val = (uint)(int)(double.Parse(value) * 65536.0);
+						}
+						else
+						{
+							return false;
+						}
+
 						break;
 					case DisplayType.Float:
 						if (value.IsFloat())

BizHawk.Client.EmuHawk/tools/Watch/WatchValueBox.cs

@@ -123,6 +123,11 @@ namespace BizHawk.Client.EmuHawk
 			get { return MaxUnsignedInt / 4096.0; }
 		}
 
+		private double Max16_16
+		{
+			get { return MaxUnsignedInt / 65536.0; }
+		}
+
 		private static double _12_4_Unit
 		{
 			get { return 1 / 16.0; }
@@ -133,6 +138,11 @@ namespace BizHawk.Client.EmuHawk
 			get { return 1 / 4096.0; }
 		}
 
+		private static double _16_16_Unit
+		{
+			get { return 1 / 65536.0; }
+		}
+
 		public override void ResetText()
 		{
 			if (_nullable)
@@ -153,6 +163,7 @@ namespace BizHawk.Client.EmuHawk
 						break;
 					case Watch.DisplayType.FixedPoint_12_4:
 					case Watch.DisplayType.FixedPoint_20_12:
+					case Watch.DisplayType.FixedPoint_16_16:
 					case Watch.DisplayType.Float:
 						Text = "0.0";
 						break;
@@ -238,6 +249,7 @@ namespace BizHawk.Client.EmuHawk
 					MaxLength = 21;
 					break;
 				case Watch.DisplayType.FixedPoint_20_12:
+				case Watch.DisplayType.FixedPoint_16_16:
 					MaxLength = 64;
 					break;
 			}
@@ -279,6 +291,7 @@ namespace BizHawk.Client.EmuHawk
 					break;
 				case Watch.DisplayType.FixedPoint_12_4:
 				case Watch.DisplayType.FixedPoint_20_12:
+				case Watch.DisplayType.FixedPoint_16_16:
 					if (!e.KeyChar.IsFixedPoint())
 					{
 						e.Handled = true;
@@ -403,6 +416,19 @@ namespace BizHawk.Client.EmuHawk
 
 						Text = f24val.ToString();
 						break;
+					case Watch.DisplayType.FixedPoint_16_16:
+						var f16val = double.Parse(text);
+						if (f16val >= Max16_16 - _16_16_Unit)
+						{
+							f16val = 0;
+						}
+						else
+						{
+							f16val += _16_16_Unit;
+						}
+
+						Text = f16val.ToString();
+						break;
 					case Watch.DisplayType.Float:
 						var dval = double.Parse(text);
 						if (dval > double.MaxValue - 1)
@@ -506,6 +532,19 @@ namespace BizHawk.Client.EmuHawk
 
 						Text = f24val.ToString();
 						break;
+					case Watch.DisplayType.FixedPoint_16_16:
+						var f16val = double.Parse(text);
+						if (f16val < 0 + _16_16_Unit)
+						{
+							f16val = Max16_16;
+						}
+						else
+						{
+							f16val -= _16_16_Unit;
+						}
+
+						Text = f16val.ToString();
+						break;
 					case Watch.DisplayType.Float:
 						var dval = double.Parse(text);
 						if (dval > double.MaxValue - 1)
@@ -550,6 +589,7 @@ namespace BizHawk.Client.EmuHawk
 					break;
 				case Watch.DisplayType.FixedPoint_12_4:
 				case Watch.DisplayType.FixedPoint_20_12:
+				case Watch.DisplayType.FixedPoint_16_16:
 					Text = Text.OnlyFixedPoint();
 					break;
 				case Watch.DisplayType.Float:
@@ -615,6 +655,13 @@ namespace BizHawk.Client.EmuHawk
 						return (int)(double.Parse(Text) * 4096.0);
 					}
 
+					break;
+				case Watch.DisplayType.FixedPoint_16_16:
+					if (Text.IsFixedPoint())
+					{
+						return (int)(double.Parse(Text) * 65536.0);
+					}
+
 					break;
 				case Watch.DisplayType.Float:
 					if (Text.IsFloat())
@@ -658,6 +705,9 @@ namespace BizHawk.Client.EmuHawk
 					case Watch.DisplayType.FixedPoint_20_12:
 						Text = string.Format("{0:F5}", val.Value / 4096.0);
 						break;
+					case Watch.DisplayType.FixedPoint_16_16:
+						Text = string.Format("{0:F5}", val.Value / 65536.0);
+						break;
 					case Watch.DisplayType.Float:
 						var bytes = BitConverter.GetBytes(val.Value);
 						float _float = BitConverter.ToSingle(bytes, 0);