AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Mapper/Mapper202.cs

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2024-08-03 22:26:53 +08:00
//////////////////////////////////////////////////////////////////////////
// Mapper202 150-in-1 //
//////////////////////////////////////////////////////////////////////////
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 Mapper202 : Mapper
{
public Mapper202(NES parent) : base(parent)
{
}
public override void Reset()
{
SetPROM_16K_Bank(4, 6);
SetPROM_16K_Bank(6, 7);
if (VROM_1K_SIZE != 0)
{
SetVROM_8K_Bank(0);
}
}
//void Mapper202::ExWrite(WORD addr, BYTE data)
public override void ExWrite(ushort addr, byte data)
{
if (addr >= 0x4020)
{
WriteSub(addr, data);
}
}
//void Mapper202::WriteLow(WORD addr, BYTE data)
public override void WriteLow(ushort addr, byte data)
{
WriteSub(addr, data);
}
//void Mapper202::Write(WORD addr, BYTE data)
public override void Write(ushort addr, byte data)
{
WriteSub(addr, data);
}
void WriteSub(ushort addr, BYTE data)
{
INT bank = (addr >> 1) & 0x07;
SetPROM_16K_Bank(4, bank);
if ((addr & 0x0C) == 0x0C)
{
SetPROM_16K_Bank(6, bank + 1);
}
else
{
SetPROM_16K_Bank(6, bank);
}
SetVROM_8K_Bank(bank);
if ((addr & 0x01) != 0)
{
SetVRAM_Mirror(VRAM_HMIRROR);
}
else
{
SetVRAM_Mirror(VRAM_VMIRROR);
}
}
}
}