using System.IO;

namespace MyNes.Core;

[BoardInfo("74161/32", 96, 1, 32)]
internal class Mapper096 : Board
{
	private int flag_c;

	internal override string Issues => MNInterfaceLanguage.IssueMapper96;

	internal override void HardReset()
	{
		base.HardReset();
		flag_c = 0;
		Switch04KCHR(3, CHRArea.Area1000);
	}

	internal override void WritePRG(ref ushort address, ref byte data)
	{
		Switch32KPRG(data & 3, PRGArea.Area8000);
		flag_c = (((data & 4) == 4) ? 1 : 0);
		Switch04KCHR(3, CHRArea.Area1000);
	}

	internal override void OnPPUAddressUpdate(ref ushort address)
	{
		if ((address & 0x3FF) < 960 && (address & 0x1000) == 0)
		{
			Switch04KCHR(((address & 0x300) >> 8) | flag_c, CHRArea.Area0000);
		}
	}

	internal override void WriteStateData(ref BinaryWriter stream)
	{
		base.WriteStateData(ref stream);
		stream.Write(flag_c);
	}

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