67 lines
1.4 KiB
C#
67 lines
1.4 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper060 //
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//////////////////////////////////////////////////////////////////////////
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using static VirtualNes.MMU;
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using static VirtualNes.Core.CPU;
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using INT = System.Int32;
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using BYTE = System.Byte;
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using System;
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using Codice.CM.Client.Differences;
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namespace VirtualNes.Core
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{
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public class Mapper060 : Mapper
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{
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BYTE patch;
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BYTE game_sel;
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public Mapper060(NES parent) : base(parent)
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{
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}
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public override void Reset()
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{
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patch = 0;
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uint crc = nes.rom.GetPROM_CRC();
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if (crc == 0xf9c484a0)
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{ // Reset Based 4-in-1(Unl)
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SetPROM_16K_Bank(4, game_sel);
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SetPROM_16K_Bank(6, game_sel);
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SetVROM_8K_Bank(game_sel);
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game_sel++;
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game_sel &= 3;
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}
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else
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{
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patch = 1;
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SetPROM_32K_Bank(0);
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SetVROM_8K_Bank(0);
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}
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}
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//void Mapper060::Write(WORD addr, BYTE data)
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public override void Write(ushort addr, byte data)
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{
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if (patch != 0)
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{
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if ((addr & 0x80) != 0)
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{
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SetPROM_16K_Bank(4, (addr & 0x70) >> 4);
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SetPROM_16K_Bank(6, (addr & 0x70) >> 4);
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}
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else
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{
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SetPROM_32K_Bank((addr & 0x70) >> 5);
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}
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SetVROM_8K_Bank(addr & 0x07);
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if ((data & 0x08) != 0) SetVRAM_Mirror(VRAM_VMIRROR);
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else SetVRAM_Mirror(VRAM_HMIRROR);
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}
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}
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}
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}
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