AxibugEmuOnline/AxibugEmuOnline.Client/Assets/MyNes.Core/Mapper112.cs
2024-07-03 18:22:22 +08:00

71 lines
1.7 KiB
C#

using System.IO;
namespace MyNes.Core
{
[BoardInfo("Asder", 112)]
internal class Mapper112 : Board
{
private int address_A000;
internal override void HardReset()
{
base.HardReset();
Switch16KPRG(PRG_ROM_16KB_Mask, PRGArea.AreaC000);
}
internal override void WritePRG(ref ushort address, ref byte data)
{
switch (address & 0xE001)
{
case 32768:
address_A000 = data & 7;
break;
case 40960:
switch (address_A000)
{
case 0:
Switch08KPRG(data, PRGArea.Area8000);
break;
case 1:
Switch08KPRG(data, PRGArea.AreaA000);
break;
case 2:
Switch02KCHR(data >> 1, CHRArea.Area0000);
break;
case 3:
Switch02KCHR(data >> 1, CHRArea.Area0800);
break;
case 4:
Switch01KCHR(data, CHRArea.Area1000);
break;
case 5:
Switch01KCHR(data, CHRArea.Area1400);
break;
case 6:
Switch01KCHR(data, CHRArea.Area1800);
break;
case 7:
Switch01KCHR(data, CHRArea.Area1C00);
break;
}
break;
case 57344:
Switch01KNMTFromMirroring(((data & 1) == 1) ? Mirroring.Horz : Mirroring.Vert);
break;
}
}
internal override void WriteStateData(ref BinaryWriter stream)
{
base.WriteStateData(ref stream);
stream.Write(address_A000);
}
internal override void ReadStateData(ref BinaryReader stream)
{
base.ReadStateData(ref stream);
address_A000 = stream.ReadInt32();
}
}
}