diff --git a/DotN64.Desktop/Program.cs b/DotN64.Desktop/Program.cs
index cd5d611..e87dfe0 100644
--- a/DotN64.Desktop/Program.cs
+++ b/DotN64.Desktop/Program.cs
@@ -43,8 +43,8 @@ namespace DotN64.Desktop
 
                 switch (arg)
                 {
-                    case "--pif-rom":
-                        options.BootROM = args[++i];
+                    case "--ipl":
+                        options.IPL = args[++i];
                         break;
                     case "--debug":
                     case "-d":
@@ -178,7 +178,7 @@ namespace DotN64.Desktop
             Console.WriteLine($"ID: {cartridge.ID}");
             Console.WriteLine($"Version: {1.0f + (cartridge.Version & ((1 << 4) - 1) >> 4) + (cartridge.Version & ((1 << 4) - 1)) * 0.1f:0.0}");
             Console.WriteLine($"Media format: {cartridge.Format}");
-            Console.WriteLine($"Country: {cartridge.Country}");
+            Console.WriteLine($"Region: {cartridge.Region}");
             Console.WriteLine($"Size: {cartridge.ROM.Length / (float)0x100000:0.##} MB");
             Console.WriteLine($"CRC: 0x{cartridge.CRC[0]:X8}, 0x{cartridge.CRC[1]:X8}");
             Console.WriteLine($"Boot address: 0x{cartridge.BootAddress:X8}");
@@ -204,8 +204,8 @@ namespace DotN64.Desktop
                 nintendo64.CartridgeSwapped += (n, c) => window.Title = nameof(DotN64) + (c != null ? $" - {c.ImageName.Trim()}" : string.Empty);
             }
 
-            if (options.BootROM != null)
-                nintendo64.PIF.BootROM = File.ReadAllBytes(options.BootROM);
+            if (options.IPL != null)
+                nintendo64.PIF.IPL = File.ReadAllBytes(options.IPL);
 
             if (options.Cartridge != null)
                 nintendo64.Cartridge = LoadCartridge(options.Cartridge);
@@ -235,7 +235,7 @@ namespace DotN64.Desktop
             Console.WriteLine();
             Console.WriteLine("ROM image: Opens the file as a game cartridge.");
             Console.WriteLine("Options:");
-            Console.WriteLine("\t--pif-rom <path>: Loads the PIF's boot ROM into the machine.");
+            Console.WriteLine("\t--ipl <path>: Loads the PIF's boot ROM into the machine.");
             Console.WriteLine("\t-d, --debug: Launches the debugger for the Nintendo 64's CPU.");
             Console.WriteLine("\t-u, --update [action]: Updates the program.");
             Console.WriteLine("\t\t[action = 'check', 'c']: Checks for a new update.");
@@ -254,7 +254,7 @@ namespace DotN64.Desktop
         {
             #region Fields
             public bool UseDebugger, NoVideo, FullScreenVideo, BorderlessWindow;
-            public string BootROM, Cartridge;
+            public string IPL, Cartridge;
             public Point? VideoResolution;
             #endregion
         }
diff --git a/DotN64/Cartridge.CountryCode.cs b/DotN64/Cartridge.RegionCode.cs
similarity index 94%
rename from DotN64/Cartridge.CountryCode.cs
rename to DotN64/Cartridge.RegionCode.cs
index eb3cabf..c20883d 100644
--- a/DotN64/Cartridge.CountryCode.cs
+++ b/DotN64/Cartridge.RegionCode.cs
@@ -5,7 +5,7 @@
         /// <summary>
         /// See: https://archive.org/13/items/SNESDevManual/book1.pdf #1-2-20.
         /// </summary>
-        public enum CountryCode : byte
+        public enum RegionCode : byte
         {
             Common = (byte)'A',
             Brazil = (byte)'B',
diff --git a/DotN64/Cartridge.cs b/DotN64/Cartridge.cs
index 9fa096d..751ea99 100644
--- a/DotN64/Cartridge.cs
+++ b/DotN64/Cartridge.cs
@@ -33,7 +33,7 @@ namespace DotN64
 
         public MediaFormat Format => (MediaFormat)ROM[0x3B];
 
-        public CountryCode Country => (CountryCode)ROM[0x3E];
+        public RegionCode Region => (RegionCode)ROM[0x3E];
 
         public byte Version => ROM[0x3F];
         #endregion
diff --git a/DotN64/DotN64.csproj b/DotN64/DotN64.csproj
index 0dbdc43..40b27f4 100644
--- a/DotN64/DotN64.csproj
+++ b/DotN64/DotN64.csproj
@@ -87,7 +87,7 @@
     <Compile Include="CPU\VR4300\CP1\VR4300.FloatingPointUnit.cs" />
     <Compile Include="PIF\PeripheralInterface.TVType.cs" />
     <Compile Include="Cartridge.MediaFormat.cs" />
-    <Compile Include="Cartridge.CountryCode.cs" />
+    <Compile Include="Cartridge.RegionCode.cs" />
     <Compile Include="CPU\VR4300\CP1\VR4300.FloatingPointUnit.OpCode.cs" />
     <Compile Include="CPU\VR4300\CP1\VR4300.FloatingPointUnit.Register.cs" />
     <Compile Include="CPU\VR4300\CP1\VR4300.FloatingPointUnit.ImplementationRevisionRegister.cs" />
diff --git a/DotN64/PIF/PeripheralInterface.cs b/DotN64/PIF/PeripheralInterface.cs
index 0aaa80f..c492dfc 100644
--- a/DotN64/PIF/PeripheralInterface.cs
+++ b/DotN64/PIF/PeripheralInterface.cs
@@ -15,7 +15,7 @@ namespace DotN64
         #endregion
 
         #region Properties
-        public byte[] BootROM { get; set; }
+        public byte[] IPL { get; set; }
 
         public byte[] RAM { get; } = new byte[64];
 
@@ -106,12 +106,12 @@ namespace DotN64
         /// </summary>
         private TVType GetRegion()
         {
-            switch (nintendo64.Cartridge?.Country)
+            switch (nintendo64.Cartridge?.Region)
             {
-                case Cartridge.CountryCode.NorthAmerica:
-                case Cartridge.CountryCode.Japan:
+                case Cartridge.RegionCode.NorthAmerica:
+                case Cartridge.RegionCode.Japan:
                     return TVType.NTSC;
-                case Cartridge.CountryCode.Brazil:
+                case Cartridge.RegionCode.Brazil:
                     return TVType.MPAL;
                 default:
                     return TVType.PAL;
@@ -135,7 +135,7 @@ namespace DotN64
         {
             DetectDevice();
 
-            if (BootROM == null)
+            if (IPL == null)
                 EmulateBootROM();
         }
         #endregion
diff --git a/DotN64/RCP/SI/RealityCoprocessor.SerialInterface.cs b/DotN64/RCP/SI/RealityCoprocessor.SerialInterface.cs
index 7602cca..2961964 100644
--- a/DotN64/RCP/SI/RealityCoprocessor.SerialInterface.cs
+++ b/DotN64/RCP/SI/RealityCoprocessor.SerialInterface.cs
@@ -31,7 +31,7 @@ namespace DotN64.RCP
                     },
                     new MappingEntry(0x1FC00000, 0x1FC007BF) // PIF Boot ROM.
                     {
-                        Read = o => BitHelper.FromBigEndian(BitConverter.ToUInt32(PIF.BootROM, (int)o))
+                        Read = o => BitHelper.FromBigEndian(BitConverter.ToUInt32(PIF.IPL, (int)o))
                     },
                     new MappingEntry(0x1FC007C0, 0x1FC007FF) // PIF (JoyChannel) RAM.
                     {