AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Mapper/Mapper095.cs

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2024-08-04 23:37:02 +08:00
//////////////////////////////////////////////////////////////////////////
// Mapper095 Namcot 106M (Dragon Buster) //
//////////////////////////////////////////////////////////////////////////
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 Mapper095 : Mapper
{
BYTE reg;
BYTE prg0, prg1;
BYTE chr01, chr23, chr4, chr5, chr6, chr7;
public Mapper095(NES parent) : base(parent)
{
}
public override void Reset()
{
reg = 0x00;
prg0 = 0;
prg1 = 1;
SetBank_CPU();
if (VROM_1K_SIZE != 0)
{
chr01 = 0;
chr23 = 2;
chr4 = 4;
chr5 = 5;
chr6 = 6;
chr7 = 7;
}
else
{
chr01 = chr23 = chr4 = chr5 = chr6 = chr7 = 0;
}
SetBank_PPU();
nes.SetRenderMethod(EnumRenderMethod.POST_RENDER);
}
//void Mapper095::Write(WORD addr, BYTE data)
public override void Write(ushort addr, byte data)
{
switch (addr & 0xE001)
{
case 0x8000:
reg = data;
SetBank_CPU();
SetBank_PPU();
break;
case 0x8001:
if (reg <= 0x05)
{
if ((data & 0x20) != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
else SetVRAM_Mirror(VRAM_MIRROR4L);
data &= 0x1F;
}
switch (reg & 0x07)
{
case 0x00:
if (VROM_1K_SIZE != 0)
{
chr01 = (byte)(data & 0xFE);
SetBank_PPU();
}
break;
case 0x01:
if (VROM_1K_SIZE != 0)
{
chr23 = (byte)(data & 0xFE);
SetBank_PPU();
}
break;
case 0x02:
if (VROM_1K_SIZE != 0)
{
chr4 = data;
SetBank_PPU();
}
break;
case 0x03:
if (VROM_1K_SIZE != 0)
{
chr5 = data;
SetBank_PPU();
}
break;
case 0x04:
if (VROM_1K_SIZE != 0)
{
chr6 = data;
SetBank_PPU();
}
break;
case 0x05:
if (VROM_1K_SIZE != 0)
{
chr7 = data;
SetBank_PPU();
}
break;
case 0x06:
prg0 = data;
SetBank_CPU();
break;
case 0x07:
prg1 = data;
SetBank_CPU();
break;
}
break;
}
}
void SetBank_CPU()
{
if ((reg & 0x40) != 0)
{
SetPROM_32K_Bank(PROM_8K_SIZE - 2, prg1, prg0, PROM_8K_SIZE - 1);
}
else
{
SetPROM_32K_Bank(prg0, prg1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
}
}
void SetBank_PPU()
{
if (VROM_1K_SIZE != 0)
{
if ((reg & 0x80) != 0)
{
SetVROM_8K_Bank(chr4, chr5, chr6, chr7,
chr01, chr01 + 1, chr23, chr23 + 1);
}
else
{
SetVROM_8K_Bank(chr01, chr01 + 1, chr23, chr23 + 1,
chr4, chr5, chr6, chr7);
}
}
}
//void Mapper095::SaveState(LPBYTE p)
public override void SaveState(byte[] p)
{
p[0] = reg;
p[1] = prg0;
p[2] = prg1;
p[3] = chr01;
p[4] = chr23;
p[5] = chr4;
p[6] = chr5;
p[7] = chr6;
p[8] = chr7;
}
//void Mapper095::LoadState(LPBYTE p)
public override void LoadState(byte[] p)
{
reg = p[0];
prg0 = p[1];
prg1 = p[2];
chr01 = p[3];
chr23 = p[4];
chr4 = p[5];
chr5 = p[6];
chr6 = p[7];
chr7 = p[8];
}
public override bool IsStateSave()
{
return true;
}
}
}