AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Mapper/Mapper060.cs
2024-08-05 00:44:30 +08:00

67 lines
1.4 KiB
C#

//////////////////////////////////////////////////////////////////////////
// Mapper060 //
//////////////////////////////////////////////////////////////////////////
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 Mapper060 : Mapper
{
BYTE patch;
BYTE game_sel;
public Mapper060(NES parent) : base(parent)
{
}
public override void Reset()
{
patch = 0;
uint crc = nes.rom.GetPROM_CRC();
if (crc == 0xf9c484a0)
{ // Reset Based 4-in-1(Unl)
SetPROM_16K_Bank(4, game_sel);
SetPROM_16K_Bank(6, game_sel);
SetVROM_8K_Bank(game_sel);
game_sel++;
game_sel &= 3;
}
else
{
patch = 1;
SetPROM_32K_Bank(0);
SetVROM_8K_Bank(0);
}
}
//void Mapper060::Write(WORD addr, BYTE data)
public override void Write(ushort addr, byte data)
{
if (patch != 0)
{
if ((addr & 0x80) != 0)
{
SetPROM_16K_Bank(4, (addr & 0x70) >> 4);
SetPROM_16K_Bank(6, (addr & 0x70) >> 4);
}
else
{
SetPROM_32K_Bank((addr & 0x70) >> 5);
}
SetVROM_8K_Bank(addr & 0x07);
if ((data & 0x08) != 0) SetVRAM_Mirror(VRAM_VMIRROR);
else SetVRAM_Mirror(VRAM_HMIRROR);
}
}
}
}