diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.BoardSystem.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.BoardSystem.cs
index 35293dccdf..2f65e1ed56 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.BoardSystem.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.BoardSystem.cs
@@ -729,6 +729,22 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 	public static class AutoMapperProps
 	{
+		public static void Populate(NES.INESBoard board, NES.NESSyncSettings settings)
+		{
+			var fields = board.GetType().GetFields();
+			foreach (var field in fields)
+			{
+				var attrib = field.GetCustomAttributes(typeof(MapperPropAttribute), false).OfType<MapperPropAttribute>().SingleOrDefault();
+				if (attrib == null)
+					continue;
+				string Name = attrib.Name ?? field.Name;
+				if (!settings.BoardProperties.ContainsKey(Name))
+				{
+					settings.BoardProperties.Add(Name, (string)Convert.ChangeType(field.GetValue(board), typeof(string)));
+				}
+			}
+		}
+
 		public static void Apply(NES.INESBoard board)
 		{
 			var fields = board.GetType().GetFields();
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs
index b23a20605d..cfb406f06f 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs
@@ -426,6 +426,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				nsfboard.WRAM = new byte[cart.wram_size * 1024];
 				Board = nsfboard;
 				Board.PostConfigure();
+				AutoMapperProps.Populate(Board, SyncSettings);
 
 				Console.WriteLine("Using NTSC display type for NSF for now");
 				_display_type = Common.DisplayType.NTSC;
@@ -463,6 +464,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 					Board.VRAM = new byte[cart.vram_size * 1024];
 
 				Board.PostConfigure();
+				AutoMapperProps.Populate(Board, SyncSettings);
 
 				Console.WriteLine("Using NTSC display type for FDS disk image");
 				_display_type = Common.DisplayType.NTSC;
@@ -709,6 +711,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				Board.VRAM = new byte[cart.vram_size * 1024];
 
 			Board.PostConfigure();
+			AutoMapperProps.Populate(Board, SyncSettings);
 
 			// set up display type