89 lines
1.9 KiB
C#
89 lines
1.9 KiB
C#
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using System.IO;
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namespace MyNes.Core
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{
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[BoardInfo("Sachen Poker", 243)]
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[HassIssues]
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internal class Mapper243 : Board
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{
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private int addr;
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private int chr_reg;
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internal override string Issues => MNInterfaceLanguage.IssueMapper243;
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internal override void HardReset()
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{
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base.HardReset();
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addr = (chr_reg = 0);
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}
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internal override void WriteEX(ref ushort address, ref byte data)
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{
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if (address >= 20480 || address < 16416)
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{
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return;
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}
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switch (address & 0x4101)
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{
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case 16640:
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addr = data & 7;
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break;
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case 16641:
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switch (addr)
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{
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case 2:
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chr_reg = ((data << 3) & 8) | (chr_reg & 7);
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Switch08KCHR(chr_reg);
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break;
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case 4:
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chr_reg = (data & 1) | (chr_reg & 0xE);
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Switch08KCHR(chr_reg);
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break;
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case 5:
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Switch32KPRG(data & 7, PRGArea.Area8000);
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break;
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case 6:
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chr_reg = ((data & 3) << 1) | (chr_reg & 9);
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Switch08KCHR(chr_reg);
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break;
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case 7:
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switch ((data >> 1) & 3)
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{
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case 0:
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Switch01KNMTFromMirroring(Mirroring.Horz);
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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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Switch01KNMT(14);
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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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break;
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case 3:
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break;
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}
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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(addr);
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stream.Write(chr_reg);
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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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addr = stream.ReadInt32();
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chr_reg = stream.ReadInt32();
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}
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}
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}
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