diff --git a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
index 679f9b6aad..0c151c60a1 100644
--- a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
+++ b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
@@ -462,6 +462,7 @@
     <Compile Include="CPUs\68000\Memory.cs" />
     <Compile Include="CPUs\68000\OpcodeTable.cs" />
     <Compile Include="CPUs\68000\Tables.cs" />
+    <Compile Include="CPUs\ARM\Darm.cs" />
     <Compile Include="CPUs\CP1610\CP1610.cs" />
     <Compile Include="CPUs\CP1610\Disassembler.cs" />
     <Compile Include="CPUs\CP1610\Execute.cs" />
diff --git a/BizHawk.Emulation.Cores/CPUs/ARM/Darm.cs b/BizHawk.Emulation.Cores/CPUs/ARM/Darm.cs
new file mode 100644
index 0000000000..e3ffe05058
--- /dev/null
+++ b/BizHawk.Emulation.Cores/CPUs/ARM/Darm.cs
@@ -0,0 +1,107 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Runtime.InteropServices;
+
+namespace BizHawk.Emulation.Cores.Components.ARM
+{
+	public class Darm
+	{
+		public const string dllname = "libdarm.dll";
+		public const CallingConvention cc = CallingConvention.Cdecl;
+
+		[StructLayout(LayoutKind.Sequential)]
+		public class Darm_T
+		{
+			public uint w;
+			public uint instr;
+			public uint instr_type;
+			public uint instr_imm_type;
+			public uint instr_flag_type;
+			public uint cond;
+			public uint B;
+			public uint S;
+			public uint E;
+			public uint M;
+			public uint N;
+			public uint option;
+			public uint U;
+			public uint H;
+			public uint P;
+			public uint R;
+			public uint T;
+			public uint W;
+			public uint I;
+			public uint rotate;
+			public uint Rd;
+			public uint Rn;
+			public uint Rm;
+			public uint Ra;
+			public uint Rt;
+			public uint Rt2;
+			public uint RdHi;
+			public uint RdLo;
+			public uint imm;
+			public uint sat_imm;
+			public uint shift_type;
+			public uint Rs;
+			public uint shift;
+			public uint lsb;
+			public uint msb;
+			public uint width;
+			public ushort reglist;
+			public byte coproc;
+			public byte opc1;
+			public byte opc2;
+			public uint CRd;
+			public uint CRn;
+			public uint Crm;
+			public uint D;
+			public uint firstcond;
+			public byte mask;
+			// just in case we got something wrong, padding
+			public uint Pad1;
+			public uint Pad2;
+			public uint Pad3;
+			public uint Pad4;
+			public uint Pad5;
+			public uint Pad6;
+			public uint Pad7;
+			public uint Pad8;
+			public uint Pad9;
+		}
+
+		[StructLayout(LayoutKind.Sequential)]
+		public class Darm_Str_T
+		{
+			[MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
+			public byte[] mnemonic = new byte[12];
+			[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6 * 32)]
+			public byte[,] arg = new byte[6, 32];
+			[MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
+			public byte[] shift = new byte[12];
+			[MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)]
+			public byte[] total = new byte[64];
+		}
+
+		[DllImport(dllname, CallingConvention = cc, EntryPoint = "darm_disasm")]
+		public static extern bool Disassemble([Out] Darm_T d, ushort w, ushort w2, uint addr);
+
+		[DllImport(dllname, CallingConvention = cc, EntryPoint = "darm_str2")]
+		public static extern bool Str([In] [Out]Darm_T d, [Out]Darm_Str_T s, bool lowercase);
+
+		public static string DisassembleStuff(uint addr, uint opcode)
+		{
+			var d = new Darm_T();
+			var s = new Darm_Str_T();
+			if (!Disassemble(d, (ushort)opcode, (ushort)(opcode >> 16), addr))
+				return null;
+			if (Str(d, s, false))
+				return null;
+			return Encoding.ASCII.GetString(s.total);
+		}
+	}
+
+}
+
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/VBANext.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/VBANext.cs
index d71f5a1f68..9a4b359b83 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/VBANext.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/VBANext.cs
@@ -79,7 +79,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 				InitCallbacks();
 
 				CoreComm.CpuTraceAvailable = true;
-				CoreComm.TraceHeader = "--ADDR-- ---OP---";
 
 				// todo: hook me up as a setting
 				SetupColors();
@@ -271,13 +270,21 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 		LibVBANext.AddressCallback writecb;
 		LibVBANext.TraceCallback tracecb;
 
+		string Trace(uint addr, uint opcode)
+		{
+			return
+				string.Format("{0:x8} {1}",
+				opcode,
+				Emulation.Cores.Components.ARM.Darm.DisassembleStuff(addr, opcode));
+		}
+
 		void InitCallbacks()
 		{
 			padcb = new LibVBANext.StandardCallback(() => CoreComm.InputCallback.Call());
 			fetchcb = new LibVBANext.AddressCallback((addr) => CoreComm.MemoryCallbackSystem.CallExecute(addr));
 			readcb = new LibVBANext.AddressCallback((addr) => CoreComm.MemoryCallbackSystem.CallRead(addr));
 			writecb = new LibVBANext.AddressCallback((addr) => CoreComm.MemoryCallbackSystem.CallWrite(addr));
-			tracecb = new LibVBANext.TraceCallback((addr, opcode) => CoreComm.Tracer.Put(string.Format("{0:x8} {1:x8}", addr, opcode)));
+			tracecb = new LibVBANext.TraceCallback((addr, opcode) => CoreComm.Tracer.Put(Trace(addr, opcode)));
 		}
 
 		void SyncCallbacks()
diff --git a/output/dll/libdarm.dll b/output/dll/libdarm.dll
new file mode 100644
index 0000000000..9313414b41
Binary files /dev/null and b/output/dll/libdarm.dll differ