AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Mapper/Mapper088.cs

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2024-08-04 23:37:02 +08:00
using static VirtualNes.MMU;
using static VirtualNes.Core.CPU;
using INT = System.Int32;
using BYTE = System.Byte;
using System;
using Codice.CM.Client.Differences;
namespace VirtualNes.Core
{
public class Mapper088 : Mapper
{
BYTE reg;
BYTE patch;
public Mapper088(NES parent) : base(parent)
{
}
public override void Reset()
{
SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
if (VROM_1K_SIZE >= 8)
{
SetVROM_8K_Bank(0);
}
patch = 0;
uint crc = nes.rom.GetPROM_CRC();
if (crc == 0xc1b6b2a6)
{ // Devil Man(J)
patch = 1;
nes.SetRenderMethod(EnumRenderMethod.POST_RENDER);
}
if (crc == 0xd9803a35)
{ // Quinty(J)
nes.SetRenderMethod(EnumRenderMethod.POST_RENDER);
}
}
//void Mapper088::Write(WORD addr, BYTE data)
public override void Write(ushort addr, byte data)
{
switch (addr)
{
case 0x8000:
reg = data;
if (patch != 0)
{
if ((data & 0x40) != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
else SetVRAM_Mirror(VRAM_MIRROR4L);
}
break;
case 0x8001:
switch (reg & 0x07)
{
case 0:
SetVROM_2K_Bank(0, data >> 1);
break;
case 1:
SetVROM_2K_Bank(2, data >> 1);
break;
case 2:
SetVROM_1K_Bank(4, data + 0x40);
break;
case 3:
SetVROM_1K_Bank(5, data + 0x40);
break;
case 4:
SetVROM_1K_Bank(6, data + 0x40);
break;
case 5:
SetVROM_1K_Bank(7, data + 0x40);
break;
case 6:
SetPROM_8K_Bank(4, data);
break;
case 7:
SetPROM_8K_Bank(5, data);
break;
}
break;
case 0xC000:
if (data != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
else SetVRAM_Mirror(VRAM_MIRROR4L);
break;
}
}
//void Mapper088::SaveState(LPBYTE p)
public override void SaveState(byte[] p)
{
p[0] = reg;
}
//void Mapper088::LoadState(LPBYTE p)
public override void LoadState(byte[] p)
{
reg = p[0];
}
public override bool IsStateSave()
{
return true;
}
}
}