/// <summary>
/// Checks the highest order bit of the specified 16-bit value and sets the Negative status flag if it is not equal to zero, otherwise the flag is cleared.
/// </summary>
/// <param name="state">The CPUState instance containing register values and other state properties of the CPU.</param>
/// <param name="value">The value to be checked.</param>
protected void CheckNegativeFlag(CPUState state, int value)
{
state.ChangeStatusFlag(StatusFlag.Negative, (value & 0x80) != 0);
}
/// <summary>
/// Checks the specified value and sets the Zero status flag if it is equal to zero, otherwise the flag is cleared.
/// </summary>
/// <param name="state">The CPUState instance containing register values and other state properties of the CPU.</param>
/// <param name="value">The value to be checked.</param>
protected void CheckZeroFlag(CPUState state, int value)
{
state.ChangeStatusFlag(StatusFlag.Zero, value == 0);
}
