69 lines
1.5 KiB
C#
69 lines
1.5 KiB
C#
using System.IO;
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namespace MyNes.Core
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{
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[BoardInfo("Unknown", 233)]
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internal class Mapper233 : Board
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{
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private int title;
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private int bank;
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internal override void HardReset()
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{
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base.HardReset();
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bank = (title = 0);
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}
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internal override void SoftReset()
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{
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base.SoftReset();
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bank = 0;
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title ^= 32;
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}
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internal override void WritePRG(ref ushort address, ref byte data)
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{
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bank = data & 0x1F;
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if ((data & 0x20) == 32)
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{
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Switch16KPRG(title | bank, PRGArea.Area8000);
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Switch16KPRG(title | bank, PRGArea.AreaC000);
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}
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else
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{
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Switch32KPRG((title >> 1) | (bank >> 1), PRGArea.Area8000);
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}
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switch ((data >> 6) & 3)
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{
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case 0:
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Switch01KNMT(128);
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break;
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case 1:
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Switch01KNMTFromMirroring(Mirroring.Vert);
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break;
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case 2:
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Switch01KNMTFromMirroring(Mirroring.Horz);
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break;
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case 3:
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Switch01KNMTFromMirroring(Mirroring.OneScB);
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break;
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}
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}
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internal override void WriteStateData(ref BinaryWriter stream)
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{
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base.WriteStateData(ref stream);
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stream.Write(title);
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stream.Write(bank);
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}
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internal override void ReadStateData(ref BinaryReader stream)
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{
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base.ReadStateData(ref stream);
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title = stream.ReadInt32();
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bank = stream.ReadInt32();
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}
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}
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}
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