AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Mapper/Mapper078.cs

//////////////////////////////////////////////////////////////////////////
// Mapper078  Jaleco(Cosmo Carrier)                                     //
//////////////////////////////////////////////////////////////////////////
using static VirtualNes.MMU;


namespace VirtualNes.Core
{
    public class Mapper078 : Mapper
    {
        public Mapper078(NES parent) : base(parent)
        {
        }

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

            if (VROM_8K_SIZE != 0)
            {
                SetVROM_8K_Bank(0);
            }
        }

        //void Mapper078::Write(WORD addr, BYTE data)
        public override void Write(ushort addr, byte data)
        {
            //DEBUGOUT( "MAP78 WR $%04X=$%02X L=%d\n", addr, data, nes->GetScanline() );
            SetPROM_16K_Bank(4, data & 0x0F);
            SetVROM_8K_Bank((data & 0xF0) >> 4);

            if ((addr & 0xFE00) != 0xFE00)
            {
                if ((data & 0x08) != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
                else SetVRAM_Mirror(VRAM_MIRROR4L);
            }
        }


    }
}