AxibugEmuOnline/AxibugEmuOnline.Client/Assets/MyNes.Core/Mapper076.cs

using System.IO;

namespace MyNes.Core
{
    [BoardInfo("Namco 109", 76)]
    internal class Mapper076 : Board
    {
    	private int address_8001;

    	private bool prg_a;

    	private byte prg_reg;

    	internal override void HardReset()
    	{
    		base.HardReset();
    		Switch08KPRG(PRG_ROM_08KB_Mask - 1, PRGArea.AreaC000);
    		Switch08KPRG(PRG_ROM_08KB_Mask, PRGArea.AreaE000);
    		address_8001 = 0;
    		prg_a = false;
    	}

    	internal override void WritePRG(ref ushort address, ref byte data)
    	{
    		switch (address & 0xE001)
    		{
    		case 32768:
    			address_8001 = data & 7;
    			prg_a = (data & 0x40) == 64;
    			Switch08KPRG(prg_reg, prg_a ? PRGArea.AreaC000 : PRGArea.Area8000);
    			break;
    		case 32769:
    			switch (address_8001)
    			{
    			case 2:
    				Switch02KCHR(data, CHRArea.Area0000);
    				break;
    			case 3:
    				Switch02KCHR(data, CHRArea.Area0800);
    				break;
    			case 4:
    				Switch02KCHR(data, CHRArea.Area1000);
    				break;
    			case 5:
    				Switch02KCHR(data, CHRArea.Area1800);
    				break;
    			case 6:
    				Switch08KPRG(prg_reg = data, prg_a ? PRGArea.AreaC000 : PRGArea.Area8000);
    				break;
    			case 7:
    				Switch08KPRG(data, PRGArea.AreaA000);
    				break;
    			}
    			break;
    		case 40960:
    			Switch01KNMTFromMirroring(((data & 1) == 1) ? Mirroring.Horz : Mirroring.Vert);
    			break;
    		}
    	}

    	internal override void WriteStateData(ref BinaryWriter stream)
    	{
    		base.WriteStateData(ref stream);
    		stream.Write(address_8001);
    		stream.Write(prg_a);
    		stream.Write(prg_reg);
    	}

    	internal override void ReadStateData(ref BinaryReader stream)
    	{
    		base.ReadStateData(ref stream);
    		address_8001 = stream.ReadInt32();
    		prg_a = stream.ReadBoolean();
    		prg_reg = stream.ReadByte();
    	}
    }
}