70 lines
1.3 KiB
C#
70 lines
1.3 KiB
C#
using BizHawk.Common;
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namespace BizHawk.Emulation.Cores.Nintendo.NES
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{
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// Adapted from
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public sealed class CamericaGoldenFive : NES.NESBoardBase
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{
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private ByteBuffer regs = new ByteBuffer(2);
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private int prg_bank_mask_16k;
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public override bool Configure(NES.EDetectionOrigin origin)
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{
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switch (Cart.board_type)
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{
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case "MAPPER104":
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break;
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default:
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return false;
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}
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prg_bank_mask_16k = Cart.prg_size / 16 - 1;
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regs[1] = 0xF;
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SetMirrorType(EMirrorType.Vertical);
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return true;
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}
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public override void Dispose()
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{
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regs.Dispose();
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base.Dispose();
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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("reg", ref regs);
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}
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public override void WritePRG(int addr, byte value)
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{
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if (addr < 0x2000) // 80000
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{
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if ((value & 8) > 0)
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{
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regs[0] = (byte)((value << 4 & 0x70) | (regs[0] & 0x0F));
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regs[1] = (byte)((value << 4 & 0x70) | 0x0F);
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}
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}
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else if (addr >= 0x4000) // C000
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{
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regs[0] = (byte)(regs[0] & 0x70 | (value & 0x0F));
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}
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}
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public override byte ReadPRG(int addr)
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{
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if (addr < 0x4000)
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{
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return ROM[((regs[0]) << 14) + (addr & 0x3FFF)];
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}
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else
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{
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return ROM[((regs[1]) << 14) + (addr & 0x3FFF)];
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}
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}
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}
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}
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