AxibugEmuOnline/OtherCore/MyNes.Standard2/MyNes.Core/Mapper046.cs

43 lines
1.1 KiB
C#

using System.IO;
namespace MyNes.Core
{
[BoardInfo("15-in-1 Color Dreams", 46)]
internal class Mapper046 : Board
{
private int prg_reg;
private int chr_reg;
internal override void WriteSRM(ref ushort address, ref byte data)
{
prg_reg = (prg_reg & 1) | ((data << 1) & 0x1E);
chr_reg = (chr_reg & 7) | ((data >> 1) & 0x78);
Switch08KCHR(chr_reg);
Switch32KPRG(prg_reg, PRGArea.Area8000);
}
internal override void WritePRG(ref ushort address, ref byte data)
{
prg_reg = (data & 1) | (prg_reg & 0x1E);
chr_reg = ((data >> 4) & 7) | (chr_reg & 0x78);
Switch08KCHR(chr_reg);
Switch32KPRG(prg_reg, PRGArea.Area8000);
}
internal override void WriteStateData(ref BinaryWriter stream)
{
base.WriteStateData(ref stream);
stream.Write(prg_reg);
stream.Write(chr_reg);
}
internal override void ReadStateData(ref BinaryReader stream)
{
base.ReadStateData(ref stream);
prg_reg = stream.ReadInt32();
chr_reg = stream.ReadInt32();
}
}
}