diff --git a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.IEmulator.cs b/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.IEmulator.cs
index 4618d1b4cb..04ccc5bd21 100644
--- a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.IEmulator.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.IEmulator.cs
@@ -75,7 +75,6 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 
 					if ((ticker % 9) == 0)
 					{
-						serialport.serial_transfer_tick();
 						cpu.ExecuteOne();
 					}
 
@@ -94,7 +93,6 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 				{
 					ppu.tick();
 					ppu.tick();
-					serialport.serial_transfer_tick();
 					ppu.Audio_tick();
 					cpu.ExecuteOne();
 
@@ -112,7 +110,6 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 		{
 			ppu.tick();
 			ppu.tick();
-			serialport.serial_transfer_tick();
 			ppu.Audio_tick();
 			cpu.ExecuteOne();
 			
diff --git a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.IStatable.cs b/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.IStatable.cs
index 1c89f6127a..17bc6a5a25 100644
--- a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.IStatable.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.IStatable.cs
@@ -19,7 +19,6 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 			cpu.SyncState(ser);
 			mapper.SyncState(ser);
 			ppu.SyncState(ser);
-			serialport.SyncState(ser);
 
 			ser.Sync(nameof(core), ref core, false);
 			ser.Sync("Lag", ref _lagcount);
diff --git a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.cs b/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.cs
index 63b990249c..3ba5ca80a7 100644
--- a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.cs
@@ -37,7 +37,6 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 
 		public I8048 cpu;
 		public PPU ppu;
-		public SerialPort serialport;
 
 		public bool is_pal;
 
@@ -56,8 +55,6 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 				WritePort = WritePort,
 				OnExecFetch = ExecFetch,
 			};
-			
-			serialport = new SerialPort();
 
 			_settings = (O2Settings)settings ?? new O2Settings();
 			_syncSettings = (O2SyncSettings)syncSettings ?? new O2SyncSettings();
@@ -86,7 +83,6 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 
 			ppu.Core = this;
 			cpu.Core = this;
-			serialport.Core = this;
 
 			ser.Register<IVideoProvider>(this);
 			ser.Register<ISoundProvider>(ppu);
@@ -134,7 +130,6 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 			WritePort(2, 0xFF);
 
 			ppu.Reset();
-			serialport.Reset();
 
 			cpu.SetCallbacks(ReadMemory, PeekMemory, PeekMemory, WriteMemory);
 		}
diff --git a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/ReadMe.txt b/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/ReadMe.txt
deleted file mode 100644
index bc60bf4b01..0000000000
--- a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/ReadMe.txt
+++ /dev/null
@@ -1 +0,0 @@
-TODO:
diff --git a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/SerialPort.cs b/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/SerialPort.cs
deleted file mode 100644
index a3e4cf3bc4..0000000000
--- a/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/SerialPort.cs
+++ /dev/null
@@ -1,147 +0,0 @@
-using BizHawk.Common;
-
-namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
-{
-	public class SerialPort
-	{
-		public O2Hawk Core { get; set; }
-
-		public byte serial_control;
-		public byte serial_data;
-		public bool serial_start;
-		public bool can_pulse;
-		public int serial_clock;
-		public int serial_bits;
-		public int clk_rate;
-		public byte going_out;
-		public byte coming_in;
-
-		public byte ReadReg(int addr)
-		{
-			switch (addr)
-			{
-				case 0xFF01:
-					return serial_data;
-				case 0xFF02:
-					return serial_control;
-			}
-
-			return 0xFF;
-		}
-
-		public void WriteReg(int addr, byte value)
-		{
-			switch (addr)
-			{
-				case 0xFF01:
-					serial_data = value;
-					break;
-
-				case 0xFF02:
-					if (((value & 0x80) > 0) && !serial_start)
-					{
-						serial_start = true;
-						serial_bits = 8;
-						if ((value & 1) > 0)
-						{
-							if (((value & 2) > 0))
-							{
-								clk_rate = 16;
-							}
-							else
-							{
-								clk_rate = 512;
-							}						
-							serial_clock = clk_rate;
-							can_pulse = true;
-						}
-						else
-						{
-							clk_rate = -1;
-							serial_clock = clk_rate;
-							can_pulse = false;
-						}
-					}
-					else if (serial_start)
-					{
-						if ((value & 1) > 0)
-						{
-							if (((value & 2) > 0))
-							{
-								clk_rate = 16;
-							}
-							else
-							{
-								clk_rate = 512;
-							}
-							serial_clock = clk_rate;
-							can_pulse = true;
-						}
-						else
-						{
-							clk_rate = -1;
-							serial_clock = clk_rate;
-							can_pulse = false;
-						}
-					}
-
-					serial_control = (byte)(0x7E | (value & 0x81)); // middle six bits always 1
-					
-					break;
-			}
-		}
-
-
-		public void serial_transfer_tick()
-		{
-			if (serial_start)
-			{
-				if (serial_clock > 0) { serial_clock--; }
-
-				if (serial_clock == 0)
-				{
-					if (serial_bits > 0)
-					{
-						byte temp = coming_in;
-						serial_data = (byte)((serial_data << 1) | temp);
-
-						serial_bits--;
-
-						if (serial_bits == 0)
-						{
-							serial_control &= 0x7F;
-							serial_start = false;
-						}
-						else
-						{
-							serial_clock = clk_rate;
-							if (clk_rate > 0) { can_pulse = true; }
-						}
-					}
-				}
-			}
-		}
-
-		public void Reset()
-		{
-			serial_control = 0x7E;
-			serial_start = false;
-			serial_data = 0x00;
-			going_out = 0;
-			coming_in = 1;
-		}
-
-		public void SyncState(Serializer ser)
-		{
-			ser.Sync(nameof(serial_control), ref serial_control);
-			ser.Sync(nameof(serial_data), ref serial_data);
-			ser.Sync(nameof(serial_start), ref serial_start);
-			ser.Sync(nameof(serial_clock), ref serial_clock);
-			ser.Sync(nameof(serial_bits), ref serial_bits);
-			ser.Sync(nameof(clk_rate), ref clk_rate);
-			ser.Sync(nameof(going_out), ref going_out);
-			ser.Sync(nameof(coming_in), ref coming_in);
-			ser.Sync(nameof(can_pulse), ref can_pulse);
-		}
-	}
-}