diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/Meteor.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/Meteor.cs
index 842b9440dd..f917dd0983 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/Meteor.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/Meteor.cs
@@ -44,7 +44,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 		public IController Controller { get; set; }
 
 		[CoreConstructor("GBA")]
-		public GBA(CoreComm comm, byte[] rom)
+		public GBA(CoreComm comm, byte[] file)
 		{
 			CoreComm = comm;
 			comm.VsyncNum = 262144;
@@ -58,12 +58,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 
 			if (bios.Length != 16384)
 				throw new InvalidDataException("GBA bios must be exactly 16384 bytes!");
-			if (rom.Length > 32 * 1024 * 1024)
+			if (file.Length > 32 * 1024 * 1024)
 				throw new InvalidDataException("Rom file is too big!  No GBA game is larger than 32MB");
 			Init();
 			LibMeteor.libmeteor_hardreset();
 			LibMeteor.libmeteor_loadbios(bios, (uint)bios.Length);
-			LibMeteor.libmeteor_loadrom(rom, (uint)rom.Length);
+			LibMeteor.libmeteor_loadrom(file, (uint)file.Length);
 
 			SetUpMemoryDomains();
 		}
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/VBANext.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/VBANext.cs
index 678d63760b..baf6457ccd 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/VBANext.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/VBANext.cs
@@ -19,12 +19,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 		IntPtr Core;
 
 		[CoreConstructor("GBA")]
-		public VBANext(byte[] rom, CoreComm comm, GameInfo game, bool deterministic, object syncsettings)
+		public VBANext(byte[] file, CoreComm comm, GameInfo game, bool deterministic, object syncsettings)
 		{
 			CoreComm = comm;
 			byte[] biosfile = CoreComm.CoreFileProvider.GetFirmware("GBA", "Bios", true, "GBA bios file is mandatory.");
 
-			if (rom.Length > 32 * 1024 * 1024)
+			if (file.Length > 32 * 1024 * 1024)
 				throw new ArgumentException("ROM is too big to be a GBA ROM!");
 			if (biosfile.Length != 16 * 1024)
 				throw new ArgumentException("BIOS file is not exactly 16K!");
@@ -61,7 +61,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 				throw new InvalidOperationException("Create() returned nullptr!");
 			try
 			{
-				if (!LibVBANext.LoadRom(Core, rom, (uint)rom.Length, biosfile, (uint)biosfile.Length, FES))
+				if (!LibVBANext.LoadRom(Core, file, (uint)file.Length, biosfile, (uint)biosfile.Length, FES))
 					throw new InvalidOperationException("LoadRom() returned false!");
 
 				CoreComm.VsyncNum = 262144;
@@ -69,7 +69,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 				CoreComm.NominalWidth = 240;
 				CoreComm.NominalHeight = 160;
 
-				GameCode = Encoding.ASCII.GetString(rom, 0xac, 4);
+				GameCode = Encoding.ASCII.GetString(file, 0xac, 4);
 				Console.WriteLine("Game code \"{0}\"", GameCode);
 
 				savebuff = new byte[LibVBANext.BinStateSize(Core)];
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/Gambatte.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/Gambatte.cs
index ae2a41f098..73348dd5e8 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/Gambatte.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/Gambatte.cs
@@ -121,7 +121,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 		#endregion
 
 		[CoreConstructor("GB", "GBC")]
-		public Gameboy(CoreComm comm, GameInfo game, byte[] rom, object Settings, object SyncSettings, bool deterministic)
+		public Gameboy(CoreComm comm, GameInfo game, byte[] file, object Settings, object SyncSettings, bool deterministic)
 		{
 			CoreComm = comm;
 
@@ -133,8 +133,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			comm.NominalWidth = 160;
 			comm.NominalHeight = 144;
 
-			ThrowExceptionForBadRom(rom);
-			BoardName = MapperName(rom);
+			ThrowExceptionForBadRom(file);
+			BoardName = MapperName(file);
 
 			DeterministicEmulation = deterministic;
 
@@ -159,7 +159,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 				if (this._SyncSettings.MulticartCompat)
 					flags |= LibGambatte.LoadFlags.MULTICART_COMPAT;
 
-				if (LibGambatte.gambatte_load(GambatteState, rom, (uint)rom.Length, GetCurrentTime(), flags) != 0)
+				if (LibGambatte.gambatte_load(GambatteState, file, (uint)file.Length, GetCurrentTime(), flags) != 0)
 					throw new InvalidOperationException("gambatte_load() returned non-zero (is this not a gb or gbc rom?)");
 
 				// set real default colors (before anyone mucks with them at all)
@@ -179,8 +179,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 
 				CoreComm.RomStatusDetails = string.Format("{0}\r\nSHA1:{1}\r\nMD5:{2}\r\n",
 					game.Name,
-					rom.HashSHA1(),
-					rom.HashMD5());
+					file.HashSHA1(),
+					file.HashMD5());
 
 				{
 					byte[] buff = new byte[32];
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs
index 4d332f865c..fc995d4846 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs
@@ -60,7 +60,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Nintendo.QuickNES
 		}
 
 		[CoreConstructor("NES")]
-		public QuickNES(CoreComm comm, byte[] Rom, object Settings)
+		public QuickNES(CoreComm comm, byte[] file, object Settings)
 		{
 			using (FP.Save())
 			{
@@ -71,7 +71,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Nintendo.QuickNES
 					throw new InvalidOperationException("qn_new() returned NULL");
 				try
 				{
-					LibQuickNES.ThrowStringError(LibQuickNES.qn_loadines(Context, Rom, Rom.Length));
+					LibQuickNES.ThrowStringError(LibQuickNES.qn_loadines(Context, file, file.Length));
 
 					InitSaveRamBuff();
 					InitSaveStateBuff();
diff --git a/BizHawk.Emulation.Cores/Consoles/Sega/gpgx/GPGX.cs b/BizHawk.Emulation.Cores/Consoles/Sega/gpgx/GPGX.cs
index 7f4e6cc4a3..7f9d850ea6 100644
--- a/BizHawk.Emulation.Cores/Consoles/Sega/gpgx/GPGX.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Sega/gpgx/GPGX.cs
@@ -52,8 +52,8 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 		};
 
 		[CoreConstructor("GEN")]
-		public GPGX(CoreComm comm, byte[] rom, object Settings, object SyncSettings)
-			:this(comm, rom, null, Settings, SyncSettings)
+		public GPGX(CoreComm comm, byte[] file, object Settings, object SyncSettings)
+			:this(comm, file, null, Settings, SyncSettings)
 		{
 		}
 
diff --git a/BizHawk.Emulation.Cores/Consoles/WonderSwan/WonderSwan.cs b/BizHawk.Emulation.Cores/Consoles/WonderSwan/WonderSwan.cs
index 534d73f3d2..824155b070 100644
--- a/BizHawk.Emulation.Cores/Consoles/WonderSwan/WonderSwan.cs
+++ b/BizHawk.Emulation.Cores/Consoles/WonderSwan/WonderSwan.cs
@@ -86,7 +86,7 @@ namespace BizHawk.Emulation.Cores.WonderSwan
 		#endregion
 
 		[CoreConstructor("WSWAN")]
-		public WonderSwan(CoreComm comm, byte[] rom, bool deterministic, object Settings, object SyncSettings)
+		public WonderSwan(CoreComm comm, byte[] file, bool deterministic, object Settings, object SyncSettings)
 		{
 			CoreComm = comm;
 			_Settings = (Settings)Settings ?? new Settings();
@@ -104,7 +104,7 @@ namespace BizHawk.Emulation.Cores.WonderSwan
 
 				bool rotate = false;
 
-				if (!BizSwan.bizswan_load(Core, rom, rom.Length, ref ss, ref rotate))
+				if (!BizSwan.bizswan_load(Core, file, file.Length, ref ss, ref rotate))
 					throw new InvalidOperationException("bizswan_load() returned FALSE!");
 
 				// for future uses of ClearSaveRam(), it's important that we save this