forked from sin365/AxibugEmuOnline
105 lines
3.0 KiB
C#
105 lines
3.0 KiB
C#
using static VirtualNes.MMU;
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using BYTE = System.Byte;
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namespace VirtualNes.Core
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{
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public class Mapper088 : Mapper
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{
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BYTE reg;
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BYTE patch;
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public Mapper088(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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SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
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if (VROM_1K_SIZE >= 8)
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{
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SetVROM_8K_Bank(0);
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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 == 0xc1b6b2a6)
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{ // Devil Man(J)
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patch = 1;
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nes.SetRenderMethod(EnumRenderMethod.POST_RENDER);
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}
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if (crc == 0xd9803a35)
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{ // Quinty(J)
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nes.SetRenderMethod(EnumRenderMethod.POST_RENDER);
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}
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}
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//void Mapper088::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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switch (addr)
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{
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case 0x8000:
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reg = data;
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if (patch != 0)
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{
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if ((data & 0x40) != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
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else SetVRAM_Mirror(VRAM_MIRROR4L);
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}
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break;
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case 0x8001:
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switch (reg & 0x07)
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{
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case 0:
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SetVROM_2K_Bank(0, data >> 1);
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break;
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case 1:
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SetVROM_2K_Bank(2, data >> 1);
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break;
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case 2:
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SetVROM_1K_Bank(4, data + 0x40);
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break;
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case 3:
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SetVROM_1K_Bank(5, data + 0x40);
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break;
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case 4:
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SetVROM_1K_Bank(6, data + 0x40);
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break;
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case 5:
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SetVROM_1K_Bank(7, data + 0x40);
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break;
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case 6:
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SetPROM_8K_Bank(4, data);
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break;
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case 7:
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SetPROM_8K_Bank(5, data);
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break;
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}
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break;
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case 0xC000:
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if (data != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
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else SetVRAM_Mirror(VRAM_MIRROR4L);
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break;
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}
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}
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//void Mapper088::SaveState(LPBYTE p)
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public override void SaveState(byte[] p)
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{
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p[0] = reg;
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}
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//void Mapper088::LoadState(LPBYTE p)
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public override void LoadState(byte[] p)
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{
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reg = p[0];
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}
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public override bool IsStateSave()
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{
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return true;
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}
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}
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}
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