#17 Added .CRT cartridge format parsing

ComputerSystems/Commodore64/Cartridge/FileFormats/Crt/CrtChip.cs

@@ -0,0 +1,41 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+namespace Commodore64.Cartridge.FileFormats.Crt {
+
+    public class CrtChip {
+
+        public string Identifier { get; set; }
+        public UInt32 ChipLength { get; set; }
+        public CrtChipType ChipType { get; set; }
+        public UInt16 Bank { get; set; }
+        public UInt16 Address { get; set; }
+        public UInt16 Length { get; set; }
+
+        public byte[] Data { get; set; }
+
+
+        public static CrtChip FromBytes(byte[] data) {
+
+            var c = new CrtChip();
+
+            c.Identifier = Encoding.ASCII.GetString(data, 0, 0x04);
+
+            if (c.Identifier.ToUpper() != "CHIP") throw new FileFormatException(".CRT CHIP-packet identifier is not correct.");
+
+            c.ChipLength = BitConverter.ToUInt32(data.Skip(0x04).Take(sizeof(UInt32)).Reverse().ToArray(), 0);
+            c.ChipType = (CrtChipType) BitConverter.ToUInt16(data.Skip(0x08).Take(sizeof(UInt16)).Reverse().ToArray(), 0);
+            c.Bank = BitConverter.ToUInt16(data.Skip(0x0A).Take(sizeof(UInt16)).Reverse().ToArray(), 0);
+            c.Address = BitConverter.ToUInt16(data.Skip(0x0C).Take(sizeof(UInt16)).Reverse().ToArray(), 0);
+            c.Length = BitConverter.ToUInt16(data.Skip(0x0E).Take(sizeof(UInt16)).Reverse().ToArray(), 0);
+
+            c.Data = data.Skip(0x10).Take(c.Length).ToArray();
+
+            return c;
+        }
+
+    }
+
+}

ComputerSystems/Commodore64/Cartridge/FileFormats/Crt/CrtChipType.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace Commodore64.Cartridge.FileFormats.Crt {
+
+    public enum CrtChipType : UInt16 {
+        ROM = 0,
+        RAM = 1,
+        FLASH_ROM = 2,
+    }
+
+}

ComputerSystems/Commodore64/Cartridge/FileFormats/Crt/CrtFile.cs

@@ -0,0 +1,26 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace Commodore64.Cartridge.FileFormats.Crt {
+    public class CrtFile {
+        public CrtHeader Header { get; set; }
+        public List<CrtChip> Chips { get; set; } = new List<CrtChip>();
+
+
+        public static CrtFile FromBytes(byte[] data) {
+            var crt = new CrtFile();
+
+            crt.Header = CrtHeader.FromBytes(data);
+
+            // TODO: Add support for multiple CHIP-sections
+            crt.Chips.Add(CrtChip.FromBytes(data.Skip(0x40).ToArray()));
+
+            return crt;
+        }
+
+        public static CrtFile FromFile(string path) {
+            return FromBytes(File.ReadAllBytes(path));
+        }
+    }
+}

ComputerSystems/Commodore64/Cartridge/FileFormats/Crt/CrtHardwareType.cs

@@ -0,0 +1,29 @@
+using System;
+
+namespace Commodore64.Cartridge.FileFormats.Crt {
+
+    public enum CrtHardwareType : UInt16 {
+        ACTION_REPLAY = 1,
+        KCS_POWER_CARTRIDGE = 2,
+        FINAL_CARTRIDGE_III = 3,
+        SIMONS_BASIC = 4,
+        OCEAN_TYPE_1_256_AND_128_KB = 5,
+        EXPERT_CARTRIDGE = 6,
+        FUN_PLAY = 7,
+        SUPER_GAMES = 8,
+        ATOMIC_POWER = 9,
+        EPYX_FASTLOAD = 10,
+        WESTERMANN = 11,
+        REX = 12,
+        FINAL_CARTRIDGE_I = 13,
+        MAGIC_FORMEL = 14,
+        C64_GAME_SYSTEM = 15,
+        WARPSPEED = 16,
+        DINAMIC = 17,
+        ZAXXON = 18,
+        MAGIC_DESK, _DOMARK, _HES_AUSTRALIA = 19,
+        SUPER_SNAPSHOT_5 = 20,
+        COMAL_80 = 21,
+    }
+
+}

ComputerSystems/Commodore64/Cartridge/FileFormats/Crt/CrtHeader.cs

@@ -0,0 +1,39 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+namespace Commodore64.Cartridge.FileFormats.Crt {
+
+    public class CrtHeader {
+
+        public string Identifier { get; set; }
+        public UInt32 Length { get; set; }
+        public UInt16 Version { get; set; }
+        public CrtHardwareType HardwareType { get; set; }
+        public byte ExRomLine { get; set; }
+        public byte GameLine { get; set; }
+        public string Name { get; set; }
+
+        public static CrtHeader FromBytes(byte[] data) {
+
+            if (data.Length < 0x40) throw new ArgumentOutOfRangeException(nameof(data), "Length is less than minimum .CRT header length.");
+
+            var h = new CrtHeader();
+
+            h.Identifier = Encoding.ASCII.GetString(data, 0, 0x10).Trim();
+
+            if (h.Identifier.ToUpper() != "C64 CARTRIDGE") throw new FileFormatException(".CRT header identifier is not correct.");
+
+            h.Length = BitConverter.ToUInt32(data.Skip(0x10).Take(sizeof(UInt32)).Reverse().ToArray(), 0);
+            h.Version = BitConverter.ToUInt16(data.Skip(0x14).Take(sizeof(UInt16)).Reverse().ToArray(), 0);
+            h.HardwareType = (CrtHardwareType) BitConverter.ToUInt16(data.Skip(0x16).Take(sizeof(UInt16)).Reverse().ToArray(), 0);
+            h.ExRomLine = data[0x18];
+            h.GameLine = data[0x19];
+            h.Name = Encoding.ASCII.GetString(data, 0x20, 0x20).Trim('\0');
+
+
+            return h;
+        }
+    }
+}

ComputerSystems/Commodore64/Commodore64.csproj

@@ -57,6 +57,11 @@
     <Compile Include="C64MemoryLocations.cs" />
     <Compile Include="C64MemoryValues.cs" />
     <Compile Include="C64MemoryOffsets.cs" />
+    <Compile Include="Cartridge\FileFormats\Crt\CrtChip.cs" />
+    <Compile Include="Cartridge\FileFormats\Crt\CrtChipType.cs" />
+    <Compile Include="Cartridge\FileFormats\Crt\CrtFile.cs" />
+    <Compile Include="Cartridge\FileFormats\Crt\CrtHardwareType.cs" />
+    <Compile Include="Cartridge\FileFormats\Crt\CrtHeader.cs" />
     <Compile Include="Cia\Cia2.cs" />
     <Compile Include="Cia\Enums\Register.cs" />
     <Compile Include="Colors.cs" />
@@ -128,5 +133,6 @@
       <Name>MicroProcessor</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>