diff --git a/SabreTools.Serialization/Internal.Deserializer.cs b/SabreTools.Serialization/Internal.Deserializer.cs
index 5421df60..cc112ff9 100644
--- a/SabreTools.Serialization/Internal.Deserializer.cs
+++ b/SabreTools.Serialization/Internal.Deserializer.cs
@@ -1249,5 +1249,93 @@ namespace SabreTools.Serialization
         }
 
         #endregion
+
+        #region OpenMSX
+
+        /// <summary>
+        /// Convert from <cref="Models.Internal.Dump"/> to <cref="Models.OpenMSX.Dump"/>
+        /// </summary>
+        public static Models.OpenMSX.Dump ConvertToOpenMSX(Models.Internal.Dump item)
+        {
+            var dump = new Models.OpenMSX.Dump();
+
+            if (item.ContainsKey(Models.Internal.Dump.OriginalKey) && item[Models.Internal.Dump.OriginalKey] is Models.Internal.Original original)
+                dump.Original = ConvertToOpenMSX(original);
+
+            if (item.ContainsKey(Models.Internal.Dump.RomKey) && item[Models.Internal.Dump.RomKey] is Models.Internal.Rom rom)
+            {
+                dump.Rom = ConvertToOpenMSXRom(rom);
+            }
+            else if (item.ContainsKey(Models.Internal.Dump.MegaRomKey) && item[Models.Internal.Dump.MegaRomKey] is Models.Internal.Rom megaRom)
+            {
+                dump.Rom = ConvertToOpenMSXMegaRom(megaRom);
+            }
+            else if (item.ContainsKey(Models.Internal.Dump.SCCPlusCartKey) && item[Models.Internal.Dump.SCCPlusCartKey] is Models.Internal.Rom sccPlusCart)
+            {
+                dump.Rom = ConvertToOpenMSXSCCPlusCart(sccPlusCart);
+            }
+
+            return dump;
+        }
+        
+        /// <summary>
+        /// Convert from <cref="Models.Internal.Original"/> to <cref="Models.OpenMSX.Original"/>
+        /// </summary>
+        public static Models.OpenMSX.Original ConvertToOpenMSX(Models.Internal.Original item)
+        {
+            var original = new Models.OpenMSX.Original
+            {
+                Value = item.ReadString(Models.Internal.Original.ValueKey),
+                Content = item.ReadString(Models.Internal.Original.ContentKey),
+            };
+            return original;
+        }
+
+        /// <summary>
+        /// Convert from <cref="Models.Internal.Rom"/> to <cref="Models.OpenMSX.MegaRom"/>
+        /// </summary>
+        public static Models.OpenMSX.MegaRom ConvertToOpenMSXMegaRom(Models.Internal.Rom item)
+        {
+            var megaRom = new Models.OpenMSX.MegaRom
+            {
+                Start = item.ReadString(Models.Internal.Rom.StartKey),
+                Type = item.ReadString(Models.Internal.Rom.TypeKey),
+                Hash = item.ReadString(Models.Internal.Rom.SHA1Key),
+                Remark = item.ReadString(Models.Internal.Rom.RemarkKey),
+            };
+            return megaRom;
+        }
+
+        /// <summary>
+        /// Convert from <cref="Models.Internal.Rom"/> to <cref="Models.OpenMSX.Rom"/>
+        /// </summary>
+        public static Models.OpenMSX.Rom ConvertToOpenMSXRom(Models.Internal.Rom item)
+        {
+            var rom = new Models.OpenMSX.Rom
+            {
+                Start = item.ReadString(Models.Internal.Rom.StartKey),
+                Type = item.ReadString(Models.Internal.Rom.TypeKey),
+                Hash = item.ReadString(Models.Internal.Rom.SHA1Key),
+                Remark = item.ReadString(Models.Internal.Rom.RemarkKey),
+            };
+            return rom;
+        }
+
+        /// <summary>
+        /// Convert from <cref="Models.Internal.Rom"/> to <cref="Models.OpenMSX.SCCPlusCart"/>
+        /// </summary>
+        public static Models.OpenMSX.SCCPlusCart ConvertToOpenMSXSCCPlusCart(Models.Internal.Rom item)
+        {
+            var sccPlusCart = new Models.OpenMSX.SCCPlusCart
+            {
+                Start = item.ReadString(Models.Internal.Rom.StartKey),
+                Type = item.ReadString(Models.Internal.Rom.TypeKey),
+                Hash = item.ReadString(Models.Internal.Rom.SHA1Key),
+                Remark = item.ReadString(Models.Internal.Rom.RemarkKey),
+            };
+            return sccPlusCart;
+        }
+
+        #endregion
     }
 }
\ No newline at end of file
diff --git a/SabreTools.Serialization/Internal.Serializer.cs b/SabreTools.Serialization/Internal.Serializer.cs
index 74cbd64a..b3c5291d 100644
--- a/SabreTools.Serialization/Internal.Serializer.cs
+++ b/SabreTools.Serialization/Internal.Serializer.cs
@@ -1250,5 +1250,65 @@ namespace SabreTools.Serialization
         }
 
         #endregion
+
+        #region OpenMSX
+
+        /// <summary>
+        /// Convert from <cref="Models.OpenMSX.Dump"/> to <cref="Models.Internal.Dump"/>
+        /// </summary>
+        public static Models.Internal.Dump ConvertFromOpenMSX(Models.OpenMSX.Dump item)
+        {
+            var dump = new Models.Internal.Dump();
+            
+            if (item.Original != null)
+                dump[Models.Internal.Dump.OriginalKey] = ConvertFromOpenMSX(item.Original);
+
+            switch (item.Rom)
+            {
+                case Models.OpenMSX.Rom rom:
+                    dump[Models.Internal.Dump.RomKey] = ConvertFromOpenMSX(rom);
+                    break;
+
+                case Models.OpenMSX.MegaRom megaRom:
+                    dump[Models.Internal.Dump.MegaRomKey] = ConvertFromOpenMSX(megaRom);
+                    break;
+
+                case Models.OpenMSX.SCCPlusCart sccPlusCart:
+                    dump[Models.Internal.Dump.SCCPlusCartKey] = ConvertFromOpenMSX(sccPlusCart);
+                    break;
+            }
+
+            return dump;
+        }
+
+        /// <summary>
+        /// Convert from <cref="Models.OpenMSX.Original"/> to <cref="Models.Internal.Rom"/>
+        /// </summary>
+        public static Models.Internal.Original ConvertFromOpenMSX(Models.OpenMSX.Original item)
+        {
+            var original = new Models.Internal.Original
+            {
+                [Models.Internal.Original.ValueKey] = item.Value,
+                [Models.Internal.Original.ContentKey] = item.Content,
+            };
+            return original;
+        }
+
+        /// <summary>
+        /// Convert from <cref="Models.OpenMSX.RomBase"/> to <cref="Models.Internal.Rom"/>
+        /// </summary>
+        public static Models.Internal.Rom ConvertFromOpenMSX(Models.OpenMSX.RomBase item)
+        {
+            var rom = new Models.Internal.Rom
+            {
+                [Models.Internal.Rom.StartKey] = item.Start,
+                [Models.Internal.Rom.TypeKey] = item.Type,
+                [Models.Internal.Rom.SHA1Key] = item.Hash,
+                [Models.Internal.Rom.RemarkKey] = item.Remark,
+            };
+            return rom;
+        }
+
+        #endregion
     }
 }
\ No newline at end of file