AxibugEmuOnline/AxibugEmuOnline.Client/Assets/MyNes.Core/Mapper207.cs
2024-07-03 18:22:22 +08:00

113 lines
2.6 KiB
C#

using System.IO;
namespace MyNes.Core
{
[BoardInfo("Unknown", 207)]
[HassIssues]
internal class Mapper207 : Board
{
private int mirroring0;
private int mirroring1;
internal override string Issues => MNInterfaceLanguage.IssueMapper207;
internal override void HardReset()
{
base.HardReset();
Switch08KPRG(PRG_ROM_08KB_Mask, PRGArea.AreaE000);
}
internal override void WriteSRM(ref ushort address, ref byte data)
{
switch (address)
{
case 32496:
Switch02KCHR(data & 0x3F, CHRArea.Area0000);
mirroring0 = (data >> 7) & 1;
break;
case 32497:
Switch02KCHR(data & 0x3F, CHRArea.Area0800);
mirroring1 = (data >> 7) & 1;
break;
case 32498:
Switch01KCHR(data, CHRArea.Area1000);
break;
case 32499:
Switch01KCHR(data, CHRArea.Area1400);
break;
case 32500:
Switch01KCHR(data, CHRArea.Area1800);
break;
case 32501:
Switch01KCHR(data, CHRArea.Area1C00);
break;
case 32506:
case 32507:
Switch08KPRG(data, PRGArea.Area8000);
break;
case 32508:
case 32509:
Switch08KPRG(data, PRGArea.AreaA000);
break;
case 32510:
case 32511:
Switch08KPRG(data, PRGArea.AreaC000);
break;
case 32502:
case 32503:
case 32504:
case 32505:
break;
}
}
internal override void ReadNMT(ref ushort address, out byte data)
{
switch ((address >> 10) & 3)
{
case 0:
case 1:
data = NMT_RAM[mirroring0][address & 0x3FF];
break;
case 2:
case 3:
data = NMT_RAM[mirroring1][address & 0x3FF];
break;
default:
data = 0;
break;
}
}
internal override void WriteNMT(ref ushort address, ref byte data)
{
switch ((address >> 10) & 3)
{
case 0:
case 1:
NMT_RAM[mirroring0][address & 0x3FF] = data;
break;
case 2:
case 3:
NMT_RAM[mirroring1][address & 0x3FF] = data;
break;
}
}
internal override void WriteStateData(ref BinaryWriter stream)
{
base.WriteStateData(ref stream);
stream.Write(mirroring0);
stream.Write(mirroring1);
}
internal override void ReadStateData(ref BinaryReader stream)
{
base.ReadStateData(ref stream);
mirroring0 = stream.ReadInt32();
mirroring1 = stream.ReadInt32();
}
}
}