47 lines
883 B
C#
47 lines
883 B
C#
using BizHawk.Common;
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namespace BizHawk.Emulation.Cores.Nintendo.NES
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{
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// china
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// behavior from fceux
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internal sealed class Mapper177 : NesBoardBase
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{
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private int prg;
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public override bool Configure(EDetectionOrigin origin)
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{
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switch (Cart.BoardType)
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{
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case "MAPPER177":
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break;
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default:
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return false;
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}
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AssertPrg(1024);
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SetMirrorType(Cart.PadH, Cart.PadV);
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return true;
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}
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public override void WritePrg(int addr, byte value)
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{
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prg = value & 0x1f;
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if ((value & 0x20) != 0)
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SetMirrorType(EMirrorType.Horizontal);
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else
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SetMirrorType(EMirrorType.Vertical);
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}
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public override byte ReadPrg(int addr)
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{
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return Rom[addr | prg << 15];
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}
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public override void SyncState(Serializer ser)
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{
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base.SyncState(ser);
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ser.Sync(nameof(prg), ref prg);
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}
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}
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}
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