1 files changed, 83 insertions, 0 deletions
diff --git a/src/Noddybox.Emulation.EightBit.Z80/Z80Flags.cs b/src/Noddybox.Emulation.EightBit.Z80/Z80Flags.cs
new file mode 100644
index 0000000..edcd5f5
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+++ b/src/Noddybox.Emulation.EightBit.Z80/Z80Flags.cs
@@ -0,0 +1,83 @@
+// This file is part of the Noddybox.Emulation C# suite.
+//
+// Noddybox.Emulation is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Noddybox.Emulation is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Noddybox.Emulation.  If not, see <http://www.gnu.org/licenses/>.
+//
+// Copyright (c) 2012 Ian Cowburn
+//
+using System;
+
+namespace Noddybox.Emulation.EightBit.Z80
+{
+    /// <summary>
+    /// Defines the bits in the Z80 flag register.
+    /// </summary>
+    [Flags]
+    public enum Z80Flags
+    {
+        /// <summary>
+        /// No flags set.
+        /// </summary>
+        None        = 0x00,
+
+        /// <summary>
+        /// The carry flag.
+        /// </summary>
+        Carry       = 0x01,
+
+        /// <summary>
+        /// The negative flag.
+        /// </summary>
+        Neg		    = 0x02,
+
+        /// <summary>
+        /// The parity/overflow flag.
+        /// </summary>
+        PV		    = 0x04,
+
+        /// <summary>
+        /// A hidden flag.  Undocumented by Zilog, but affected by most operations.
+        /// </summary>
+        Hidden3	    = 0x08,
+
+        /// <summary>
+        /// The half-carry flag.
+        /// </summary>
+        HalfCarry   = 0x10,
+
+        /// <summary>
+        /// A hidden flag.  Undocumented by Zilog, but affected by most operations.
+        /// </summary>
+        Hidden5     = 0x20,
+
+        /// <summary>
+        /// The zero flag.
+        /// </summary>
+        Zero		= 0x40,
+
+        /// <summary>
+        /// The sign flag.
+        /// </summary>
+        Sign		= 0x80,
+
+        /// <summary>
+        /// A bitmask for all the hidden registers.
+        /// </summary>
+        Hidden      = Hidden3 | Hidden5,
+
+        /// <summary>
+        /// All bits set.
+        /// </summary>
+        All         = 0xff
+    };
+}