//////////////////////////////////////////////////////////////////////////
// Mapper022  Konami VRC2 type A                                        //
//////////////////////////////////////////////////////////////////////////
using static VirtualNes.MMU;
using static VirtualNes.Core.CPU;
using INT = System.Int32;
using BYTE = System.Byte;
//using Codice.CM.Client.Differences;

namespace VirtualNes.Core
{
	public class Mapper022 : Mapper
	{
		public Mapper022(NES parent) : base(parent)
		{
		}


		public override void Reset()
		{
			SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
		}

		//void Mapper022::Write(WORD addr, BYTE data)
		public override void Write(ushort addr, byte data)
		{
			switch (addr)
			{
				case 0x8000:
					SetPROM_8K_Bank(4, data);
					break;

				case 0x9000:
					data &= 0x03;
					if (data == 0) SetVRAM_Mirror(VRAM_VMIRROR);
					else if (data == 1) SetVRAM_Mirror(VRAM_HMIRROR);
					else if (data == 2) SetVRAM_Mirror(VRAM_MIRROR4H);
					else SetVRAM_Mirror(VRAM_MIRROR4L);
					break;

				case 0xA000:
					SetPROM_8K_Bank(5, data);
					break;

				case 0xB000:
					SetVROM_1K_Bank(0, data >> 1);
					break;

				case 0xB001:
					SetVROM_1K_Bank(1, data >> 1);
					break;

				case 0xC000:
					SetVROM_1K_Bank(2, data >> 1);
					break;

				case 0xC001:
					SetVROM_1K_Bank(3, data >> 1);
					break;

				case 0xD000:
					SetVROM_1K_Bank(4, data >> 1);
					break;

				case 0xD001:
					SetVROM_1K_Bank(5, data >> 1);
					break;

				case 0xE000:
					SetVROM_1K_Bank(6, data >> 1);
					break;

				case 0xE001:
					SetVROM_1K_Bank(7, data >> 1);
					break;
			}
		}


	}
}