AxibugEmuOnline/AxibugEmuOnline.Client/Assets/MyNes.Core/Mapper226.cs

using System.IO;

namespace MyNes.Core
{
    [BoardInfo("Unknown", 226)]
    internal class Mapper226 : Board
    {
    	private int prg_reg;

    	private bool prg_mode;

    	internal override void HardReset()
    	{
    		base.HardReset();
    		prg_reg = 0;
    		prg_mode = false;
    	}

    	internal override void WritePRG(ref ushort address, ref byte data)
    	{
    		switch (address & 0x8001)
    		{
    		case 32768:
    			prg_reg = (data & 0x1F) | ((data & 0x80) >> 2) | (prg_reg & 0xC0);
    			prg_mode = (data & 0x20) == 32;
    			Switch01KNMTFromMirroring(((data & 0x40) == 64) ? Mirroring.Vert : Mirroring.Horz);
    			if (prg_mode)
    			{
    				Switch16KPRG(prg_reg, PRGArea.Area8000);
    				Switch16KPRG(prg_reg, PRGArea.AreaC000);
    			}
    			else
    			{
    				Switch32KPRG(prg_reg >> 1, PRGArea.Area8000);
    			}
    			break;
    		case 32769:
    			prg_reg = ((data & 1) << 6) | (prg_reg & 0x3F);
    			if (prg_mode)
    			{
    				Switch16KPRG(prg_reg, PRGArea.Area8000);
    				Switch16KPRG(prg_reg, PRGArea.AreaC000);
    			}
    			else
    			{
    				Switch32KPRG(prg_reg >> 1, PRGArea.Area8000);
    			}
    			break;
    		}
    	}

    	internal override void WriteStateData(ref BinaryWriter stream)
    	{
    		base.WriteStateData(ref stream);
    		stream.Write(prg_reg);
    		stream.Write(prg_mode);
    	}

    	internal override void ReadStateData(ref BinaryReader stream)
    	{
    		base.ReadStateData(ref stream);
    		prg_reg = stream.ReadInt32();
    		prg_mode = stream.ReadBoolean();
    	}
    }
}