diff --git a/BizHawk.Client.Common/lua/EmuLuaLibrary.Bit.cs b/BizHawk.Client.Common/lua/EmuLuaLibrary.Bit.cs
index f9ee97935d..c2b647cd04 100644
--- a/BizHawk.Client.Common/lua/EmuLuaLibrary.Bit.cs
+++ b/BizHawk.Client.Common/lua/EmuLuaLibrary.Bit.cs
@@ -19,6 +19,7 @@ namespace BizHawk.Client.Common
 					"ror",
 					"rshift",
 					"check",
+					"signed",
 				};
 			}
 		}
@@ -50,7 +51,7 @@ namespace BizHawk.Client.Common
 
 		public static uint bit_rol(object val, object amt)
 		{
-			return (uint)((LuaInt(val) << LuaInt(amt)) 
+			return (uint)((LuaInt(val) << LuaInt(amt))
 				| (LuaInt(val) >> (32 - LuaInt(amt))));
 		}
 
diff --git a/BizHawk.Client.Common/lua/EmuLuaLibrary.String.cs b/BizHawk.Client.Common/lua/EmuLuaLibrary.String.cs
new file mode 100644
index 0000000000..54796e82a2
--- /dev/null
+++ b/BizHawk.Client.Common/lua/EmuLuaLibrary.String.cs
@@ -0,0 +1,34 @@
+using System;
+namespace BizHawk.Client.Common
+{
+	public class StringLuaLibrary : LuaLibraryBase
+	{
+		public override string Name { get { return "string"; } }
+		public override string[] Functions
+		{
+			get
+			{
+				return new[]
+				{
+					"hex",
+					"binary",
+				};
+			}
+		}
+		public static string string_hex(object num)
+		{
+			string hex = String.Format("{0:X}", LuaLong(num));
+			if (hex.Length == 1) hex = "0" + hex;
+			return hex;
+		}
+
+		public static string string_binary(object num)
+		{
+			string binary = Convert.ToString( LuaLong(num), 2);
+			binary = binary.TrimStart('0');
+			return binary;
+		}
+
+	}
+}
+