AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Mapper/Mapper225.cs

//////////////////////////////////////////////////////////////////////////
// Mapper225  72-in-1                                                   //
//////////////////////////////////////////////////////////////////////////
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 Mapper225 : Mapper
    {
        public Mapper225(NES parent) : base(parent)
        {
        }

        public override void Reset()
        {
            SetPROM_32K_Bank(0, 1, 2, 3);

            if (VROM_1K_SIZE != 0)
            {
                SetVROM_8K_Bank(0);
            }
        }

        //void Mapper225::Write(WORD addr, BYTE data)
        public override void Write(ushort addr, byte data)
        {
            BYTE prg_bank = (byte)((addr & 0x0F80) >> 7);
            BYTE chr_bank = (byte)(addr & 0x003F);

            SetVROM_1K_Bank(0, (chr_bank * 8 + 0));
            SetVROM_1K_Bank(1, (chr_bank * 8 + 1));
            SetVROM_1K_Bank(2, (chr_bank * 8 + 2));
            SetVROM_1K_Bank(3, (chr_bank * 8 + 3));
            SetVROM_1K_Bank(4, (chr_bank * 8 + 4));
            SetVROM_1K_Bank(5, (chr_bank * 8 + 5));
            SetVROM_1K_Bank(6, (chr_bank * 8 + 6));
            SetVROM_1K_Bank(7, (chr_bank * 8 + 7));

            if ((addr & 0x2000) != 0)
            {
                SetVRAM_Mirror(VRAM_HMIRROR);
            }
            else
            {
                SetVRAM_Mirror(VRAM_VMIRROR);
            }

            if ((addr & 0x1000) != 0)
            {
                // 16KBbank
                if ((addr & 0x0040) != 0)
                {
                    SetPROM_8K_Bank(4, (prg_bank * 4 + 2));
                    SetPROM_8K_Bank(5, (prg_bank * 4 + 3));
                    SetPROM_8K_Bank(6, (prg_bank * 4 + 2));
                    SetPROM_8K_Bank(7, (prg_bank * 4 + 3));
                }
                else
                {
                    SetPROM_8K_Bank(4, (prg_bank * 4 + 0));
                    SetPROM_8K_Bank(5, (prg_bank * 4 + 1));
                    SetPROM_8K_Bank(6, (prg_bank * 4 + 0));
                    SetPROM_8K_Bank(7, (prg_bank * 4 + 1));
                }
            }
            else
            {
                SetPROM_8K_Bank(4, (prg_bank * 4 + 0));
                SetPROM_8K_Bank(5, (prg_bank * 4 + 1));
                SetPROM_8K_Bank(6, (prg_bank * 4 + 2));
                SetPROM_8K_Bank(7, (prg_bank * 4 + 3));
            }
        }


    }
}