//////////////////////////////////////////////////////////////////////////
// Mapper060                                                            //
//////////////////////////////////////////////////////////////////////////
using static VirtualNes.MMU;
using BYTE = System.Byte;


namespace VirtualNes.Core
{
    public class Mapper060 : Mapper
    {
        BYTE patch;
        BYTE game_sel;
        public Mapper060(NES parent) : base(parent)
        {
        }

        public override void Reset()
        {
            patch = 0;

            uint crc = nes.rom.GetPROM_CRC();
            if (crc == 0xf9c484a0)
            {   // Reset Based 4-in-1(Unl)
                SetPROM_16K_Bank(4, game_sel);
                SetPROM_16K_Bank(6, game_sel);
                SetVROM_8K_Bank(game_sel);
                game_sel++;
                game_sel &= 3;
            }
            else
            {
                patch = 1;
                SetPROM_32K_Bank(0);
                SetVROM_8K_Bank(0);
            }
        }

        //void Mapper060::Write(WORD addr, BYTE data)
        public override void Write(ushort addr, byte data)
        {
            if (patch != 0)
            {
                if ((addr & 0x80) != 0)
                {
                    SetPROM_16K_Bank(4, (addr & 0x70) >> 4);
                    SetPROM_16K_Bank(6, (addr & 0x70) >> 4);
                }
                else
                {
                    SetPROM_32K_Bank((addr & 0x70) >> 5);
                }

                SetVROM_8K_Bank(addr & 0x07);

                if ((data & 0x08) != 0) SetVRAM_Mirror(VRAM_VMIRROR);
                else SetVRAM_Mirror(VRAM_HMIRROR);
            }
        }


    }
}