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// 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
};
}
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