AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Mapper/Mapper007.cs

//////////////////////////////////////////////////////////////////////////
// Mapper007  AOROM/AMROM                                               //
//////////////////////////////////////////////////////////////////////////
using static VirtualNes.MMU;
using BYTE = System.Byte;

namespace VirtualNes.Core
{
    public class Mapper007 : Mapper
    {

        BYTE patch;
        public Mapper007(NES parent) : base(parent) { }

        public override void Reset()
        {
            patch = 0;

            SetPROM_32K_Bank(0);
            SetVRAM_Mirror(VRAM_MIRROR4L);

            uint crc = nes.rom.GetPROM_CRC();
            if (crc == 0x3c9fe649)
            {   // WWF Wrestlemania Challenge(U)
                SetVRAM_Mirror(VRAM_VMIRROR);
                patch = 1;
            }
            if (crc == 0x09874777)
            {   // Marble Madness(U)
                nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER);
            }

            if (crc == 0x279710DC       // Battletoads (U)
             || crc == 0xCEB65B06)
            {   // Battletoads Double Dragon (U)
                nes.SetRenderMethod(EnumRenderMethod.PRE_ALL_RENDER);
                //::memset(WRAM, 0, sizeof(WRAM));
                MemoryUtility.ZEROMEMORY(WRAM, WRAM.Length);
            }
        }

        //void Mapper007::Write(WORD addr, BYTE data)
        public override void Write(ushort addr, byte data)
        {
            SetPROM_32K_Bank(data & 0x07);

            if (patch != 0)
            {
                if ((data & 0x10) != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
                else SetVRAM_Mirror(VRAM_MIRROR4L);
            }
        }

    }
}