From 11d53755f5fcb9158f4fe3abaa3c0b480a461fe7 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Sat, 23 Jun 2012 22:59:38 +0000
Subject: Added classes for save/load of emulation state.  Added to Z80 CPU.

---
 src/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs | 72 ++++++++++++++++++++++++++-
 1 file changed, 71 insertions(+), 1 deletion(-)

(limited to 'src/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs')

diff --git a/src/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs b/src/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs
index d575476..a802142 100644
--- a/src/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs
+++ b/src/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs
@@ -22,13 +22,14 @@
 // Any introduced bugs in that code are mine, and not the original authors.
 //
 using System;
+using System.IO;
 
 namespace Noddybox.Emulation.EightBit.Z80
 {
     /// <summary>
     /// Provides an implementation of a Zilog Z80 processor.
     /// </summary>
-    public partial class Z80Cpu : ICpu
+    public partial class Z80Cpu : ICpu, IEmulationState
     {
         #region Private types
 
@@ -608,5 +609,74 @@ namespace Noddybox.Emulation.EightBit.Z80
         }
 
         #endregion
+
+        #region IEmulationState Members
+
+        public int Version
+        {
+            get { return 1; }
+        }
+
+        public void SaveState(EmulationStateSaveManager manager)
+        {
+            BinaryWriter str = manager.Stream;
+
+            str.Write(A);
+            str.Write((int)F);
+            str.Write(BC.reg);
+            str.Write(DE.reg);
+            str.Write(HL.reg);
+            str.Write(IX.reg);
+            str.Write(IY.reg);
+            str.Write(PC);
+            str.Write(SP);
+            str.Write(AF_.reg);
+            str.Write(BC_.reg);
+            str.Write(DE_.reg);
+            str.Write(HL_.reg);
+            str.Write(I);
+            str.Write(R);
+            str.Write(IFF1);
+            str.Write(IFF2);
+            str.Write(raise);
+            str.Write(nmi);
+            str.Write(devbyte);
+            str.Write(IM);
+            str.Write(HALT);
+            str.Write(shift);
+            str.Write(executedInstructions);
+        }
+
+        public void LoadState(EmulationStateLoadManager manager)
+        {
+            BinaryReader str = manager.Stream;
+
+            A = str.ReadByte();
+            F = (Z80Flags)str.ReadInt32();
+            BC.reg = str.ReadUInt16();
+            DE.reg = str.ReadUInt16();
+            HL.reg = str.ReadUInt16();
+            IX.reg = str.ReadUInt16();
+            IY.reg = str.ReadUInt16();
+            PC = str.ReadUInt16();
+            SP = str.ReadUInt16();
+            AF_.reg = str.ReadUInt16();
+            BC_.reg = str.ReadUInt16();
+            DE_.reg = str.ReadUInt16();
+            HL_.reg = str.ReadUInt16();
+            I = str.ReadByte();
+            R = str.ReadByte();
+            IFF1 = str.ReadBoolean();
+            IFF2 = str.ReadBoolean();
+            raise = str.ReadBoolean();
+            nmi = str.ReadBoolean();
+            devbyte = str.ReadByte();
+            IM = str.ReadByte();
+            HALT = str.ReadBoolean();
+            shift = str.ReadInt32();
+            executedInstructions = str.ReadUInt32();
+        }
+
+        #endregion
     }
 }
-- 
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