AxibugEmuOnline/AxibugEmuOnline.Client/Assets/MyNes.Core/Mapper232.cs
2024-07-03 18:22:22 +08:00

43 lines
984 B
C#

using System.IO;
namespace MyNes.Core
{
[BoardInfo("Unknown", 232)]
internal class Mapper232 : Board
{
private int prg_reg;
internal override void HardReset()
{
base.HardReset();
Switch16KPRG(3, PRGArea.AreaC000);
}
internal override void WritePRG(ref ushort address, ref byte data)
{
if (address < 49152)
{
prg_reg = ((data & 0x18) >> 1) | (prg_reg & 3);
}
else
{
prg_reg = (prg_reg & 0xC) | (data & 3);
}
Switch16KPRG(prg_reg, PRGArea.Area8000);
Switch16KPRG(3 | (prg_reg & 0xC), PRGArea.AreaC000);
}
internal override void WriteStateData(ref BinaryWriter stream)
{
base.WriteStateData(ref stream);
stream.Write(prg_reg);
}
internal override void ReadStateData(ref BinaryReader stream)
{
base.ReadStateData(ref stream);
prg_reg = stream.ReadInt32();
}
}
}