AxibugEmuOnline/AxibugEmuOnline.Client/Assets/MyNes.Core/Mapper046.cs

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();
	}
}