#17 Added ICartridge and implemented the interface in CrtFile

hagronnestad · Apr 15, 2020 · d61e478 · d61e478
1 parent c8a7a79
commit d61e478
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Showing 4 changed files with 44 additions and 3 deletions.
diff --git a/ComputerSystems/Commodore64/Cartridge/FileFormats/Crt/CrtFile.cs b/ComputerSystems/Commodore64/Cartridge/FileFormats/Crt/CrtFile.cs
@@ -1,12 +1,17 @@
-using System.Collections.Generic;
+using Memory;
+using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 
 namespace Commodore64.Cartridge.FileFormats.Crt {
-    public class CrtFile {
+    public class CrtFile : ICartridge {
+
         public CrtHeader Header { get; set; }
         public List<CrtChip> Chips { get; set; } = new List<CrtChip>();
 
+        public event EventHandler<MemoryReadEventArgs<byte>> OnRead;
+        public event EventHandler<MemoryWriteEventArgs<byte>> OnWrite;
 
         public static CrtFile FromBytes(byte[] data) {
             var crt = new CrtFile {
@@ -27,5 +32,28 @@ public static CrtFile FromBytes(byte[] data) {
         public static CrtFile FromFile(string path) {
             return FromBytes(File.ReadAllBytes(path));
         }
+
+
+        // ICartridge implementation
+
+        public byte this[int i] {
+            get => Read(i);
+            set => Write(i, value);
+        }
+
+        public string Id => Header?.Identifier;
+        public bool ControlLineExRom => Header?.ExRomLine == 1;
+        public bool ControlLineGame => Header?.GameLine == 1;
+        public string Name => Header.Name;
+        public bool IsReadOnly => true;
+
+        public byte Read(int address) {
+            var chip = Chips.FirstOrDefault(x => address >= x.Address && address <= (x.Address + x.Length));
+            return chip.Data[address - chip.Address];
+        }
+
+        public void Write(int address, byte value) {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/ComputerSystems/Commodore64/Cartridge/ICartridge.cs b/ComputerSystems/Commodore64/Cartridge/ICartridge.cs
@@ -0,0 +1,12 @@
+using Hardware.Memory;
+
+namespace Commodore64.Cartridge {
+    public interface ICartridge : IMemory<byte> {
+
+        string Id { get; }
+        bool ControlLineExRom { get; }
+        bool ControlLineGame { get; }
+        string Name { get; }
+
+    }
+}
diff --git a/ComputerSystems/Commodore64/Commodore64.csproj b/ComputerSystems/Commodore64/Commodore64.csproj
@@ -62,6 +62,7 @@
     <Compile Include="Cartridge\FileFormats\Crt\CrtFile.cs" />
     <Compile Include="Cartridge\FileFormats\Crt\CrtHardwareType.cs" />
     <Compile Include="Cartridge\FileFormats\Crt\CrtHeader.cs" />
+    <Compile Include="Cartridge\ICartridge.cs" />
     <Compile Include="Cia\Cia2.cs" />
     <Compile Include="Cia\Enums\Register.cs" />
     <Compile Include="Colors.cs" />

diff --git a/Hardware/Memory/IMemory.cs b/Hardware/Memory/IMemory.cs
@@ -7,7 +7,7 @@ public interface IMemory<TValue> {
         event EventHandler<MemoryReadEventArgs<TValue>> OnRead;
         event EventHandler<MemoryWriteEventArgs<TValue>> OnWrite;
 
-        bool IsReadOnly { get; set; }
+        bool IsReadOnly { get; }
 
         TValue Read(int address);
         void Write(int address, TValue value);