AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Mapper/Mapper188.cs

//////////////////////////////////////////////////////////////////////////
// Mapper188  Bandai Karaoke Studio                                     //
//////////////////////////////////////////////////////////////////////////
using static VirtualNes.MMU;


namespace VirtualNes.Core
{
    public class Mapper188 : Mapper
    {
        public Mapper188(NES parent) : base(parent)
        {
        }
        public override void Reset()
        {
            if (PROM_8K_SIZE > 16)
            {
                SetPROM_32K_Bank(0, 1, 14, 15);
            }
            else
            {
                SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
            }
        }

        //void Mapper188::Write(WORD addr, BYTE data)
        public override void Write(ushort addr, byte data)
        {
            if (data != 0)
            {
                if ((data & 0x10) != 0)
                {
                    data &= 0x07;
                    SetPROM_16K_Bank(4, data);
                }
                else
                {
                    SetPROM_16K_Bank(4, data + 8);
                }
            }
            else
            {
                if (PROM_8K_SIZE == 0x10)
                {
                    SetPROM_16K_Bank(4, 7);
                }
                else
                {
                    SetPROM_16K_Bank(4, 8);
                }
            }
        }


    }
}