using System.IO;

namespace MyNes.Core;

[BoardInfo("6-in-1 (SuperGK)", 57)]
internal class Mapper057 : Board
{
	private int chr_aaa;

	private int chr_bbb;

	private int chr_hhh;

	internal override void WritePRG(ref ushort address, ref byte data)
	{
		switch (address & 0x8800)
		{
		case 32768:
			chr_aaa = data & 7;
			chr_hhh = (data & 0x40) >> 3;
			break;
		case 34816:
			chr_bbb = data & 7;
			if ((data & 0x10) == 16)
			{
				Switch32KPRG((data & 0xE0) >> 6, PRGArea.Area8000);
			}
			else
			{
				Switch16KPRG((data & 0xE0) >> 5, PRGArea.Area8000);
				Switch16KPRG((data & 0xE0) >> 5, PRGArea.AreaC000);
			}
			Switch01KNMTFromMirroring(((data & 8) == 8) ? Mirroring.Horz : Mirroring.Vert);
			break;
		}
		Switch08KCHR(chr_hhh | (chr_aaa | chr_bbb));
	}

	internal override void WriteStateData(ref BinaryWriter stream)
	{
		base.WriteStateData(ref stream);
		stream.Write(chr_aaa);
		stream.Write(chr_bbb);
		stream.Write(chr_hhh);
	}

	internal override void ReadStateData(ref BinaryReader stream)
	{
		base.ReadStateData(ref stream);
		chr_aaa = stream.ReadInt32();
		chr_bbb = stream.ReadInt32();
		chr_hhh = stream.ReadInt32();
	}
}