69 lines
1.8 KiB
C#
69 lines
1.8 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper185 Character disable protect //
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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 Mapper185 : Mapper
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{
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BYTE patch;
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public Mapper185(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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switch (PROM_16K_SIZE)
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{
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case 1: // 16K only
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SetPROM_16K_Bank(4, 0);
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SetPROM_16K_Bank(6, 0);
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break;
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case 2: // 32K
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SetPROM_32K_Bank(0);
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break;
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}
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for (INT i = 0; i < 0x400; i++)
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{
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VRAM[0x800 + i] = 0xFF;
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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 == 0xb36457c7)
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{ // Spy vs Spy(J)
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patch = 1;
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}
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}
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//void Mapper185::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) && ((data & 0x03) != 0)) || ((patch != 0) && data == 0x21))
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{
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SetVROM_8K_Bank(0);
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}
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else
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{
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SetVRAM_1K_Bank(0, 2); // use vram bank 2
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SetVRAM_1K_Bank(1, 2);
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SetVRAM_1K_Bank(2, 2);
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SetVRAM_1K_Bank(3, 2);
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SetVRAM_1K_Bank(4, 2);
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SetVRAM_1K_Bank(5, 2);
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SetVRAM_1K_Bank(6, 2);
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SetVRAM_1K_Bank(7, 2);
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}
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}
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}
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}
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