//////////////////////////////////////////////////////////////////////////
// Mapper110                                                           //
//////////////////////////////////////////////////////////////////////////
using static VirtualNes.MMU;
using static VirtualNes.Core.CPU;
using INT = System.Int32;
using BYTE = System.Byte;
using System;
//using Codice.CM.Client.Differences;

namespace VirtualNes.Core
{
	public class Mapper110 : Mapper
	{
		BYTE reg0, reg1;
		public Mapper110(NES parent) : base(parent)
		{
		}

		public override void Reset()
		{
			SetPROM_32K_Bank(0);
			SetVROM_8K_Bank(0);

			reg0 = 0;
			reg1 = 0;
		}
		//void Mapper110::WriteLow(WORD addr, BYTE data)
		public override void WriteLow(ushort addr, byte data)
		{
			switch (addr)
			{
				case 0x4100:
					reg1 = (byte)(data & 0x07);
					break;
				case 0x4101:
					switch (reg1)
					{
						case 5:
							SetPROM_32K_Bank(data);
							break;
						case 0:
							reg0 = (byte)(data & 0x01);
							SetVROM_8K_Bank(reg0);
							break;
						case 2:
							reg0 = data;
							SetVROM_8K_Bank(reg0);
							break;
						case 4:
							reg0 = (byte)(reg0 | (data << 1));
							SetVROM_8K_Bank(reg0);
							break;
						case 6:
							reg0 = (byte)(reg0 | (data << 2));
							SetVROM_8K_Bank(reg0);
							break;
						default:
							break;
					}
					break;
				default:
					break;
			}
		}

		//void Mapper110::SaveState(LPBYTE p)
		public override void SaveState(byte[] p)
		{
			p[0] = reg0;
			p[1] = reg1;
		}

		//void Mapper110::LoadState(LPBYTE p)
		public override void LoadState(byte[] p)
		{
			reg0 = p[0];
			reg1 = p[1];
		}

		public override bool IsStateSave()
		{
			return true;
		}

	}
}