diff --git a/EMU7800/Core/Cart78S4.cs b/EMU7800/Core/Cart78S4.cs
deleted file mode 100644
index 7920f19713..0000000000
--- a/EMU7800/Core/Cart78S4.cs
+++ /dev/null
@@ -1,89 +0,0 @@
-namespace EMU7800.Core
-{
-    /// <summary>
-    /// Atari 7800 SuperGame S4 bankswitched cartridge
-    /// </summary>
-    public sealed class Cart78S4 : Cart
-    {
-        //
-        // Cart Format                Mapping to ROM Address Space
-        // Bank0: 0x00000:0x4000
-        // Bank1: 0x04000:0x4000      0x4000:0x4000  Bank2
-        // Bank2: 0x08000:0x4000      0x8000:0x4000  Bank0 (0 on startup)
-        // Bank3: 0x0c000:0x4000      0xc000:0x4000  Bank3
-        //
-        // Banks 0-3 are the same as banks 4-7
-        //
-        readonly byte[] RAM;
-        readonly int[] Bank = new int[4];
-
-        #region IDevice Members
-
-        public override byte this[ushort addr]
-        {
-            get
-            {
-                if (RAM != null && addr >= 0x6000 && addr <= 0x7fff)
-                {
-                    return RAM[addr & 0x1fff];
-                }
-                return ROM[(Bank[addr >> 14] << 14) | (addr & 0x3fff)];
-            }
-            set
-            {
-                if (RAM != null && addr >= 0x6000 && addr <= 0x7fff)
-                {
-                    RAM[addr & 0x1fff] = value;
-                }
-                else if ((addr >> 14) == 2)
-                {
-                    Bank[2] = value & 3;
-                }
-            }
-        }
-
-        #endregion
-
-        private Cart78S4()
-        {
-        }
-
-        public Cart78S4(byte[] romBytes, bool needRAM)
-        {
-            if (needRAM)
-            {
-                RAM = new byte[0x2000];
-            }
-
-            LoadRom(romBytes, 0xffff);
-
-            Bank[1] = 2;
-            Bank[2] = 0;
-            Bank[3] = 3;
-        }
-
-        #region Serialization Members
-
-        public Cart78S4(DeserializationContext input, MachineBase m) : base(input)
-        {
-            var version = input.CheckVersion(1, 2);
-            LoadRom(input.ReadBytes());
-            Bank = input.ReadIntegers(4);
-            if (version == 1)
-                input.ReadInt32();
-            RAM = input.ReadOptionalBytes();
-        }
-
-        public override void GetObjectData(SerializationContext output)
-        {
-            base.GetObjectData(output);
-
-            output.WriteVersion(2);
-            output.Write(ROM);
-            output.Write(Bank);
-            output.WriteOptional(RAM);
-        }
-
-        #endregion
-    }
-}
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