117 lines
3.2 KiB
C#
117 lines
3.2 KiB
C#
//////////////////////////////////////////////////////////////////////////
|
|
// Mapper082 Taito C075 //
|
|
//////////////////////////////////////////////////////////////////////////
|
|
using static VirtualNes.MMU;
|
|
using BYTE = System.Byte;
|
|
|
|
|
|
namespace VirtualNes.Core
|
|
{
|
|
public class Mapper082 : Mapper
|
|
{
|
|
BYTE reg;
|
|
|
|
public Mapper082(NES parent) : base(parent)
|
|
{
|
|
}
|
|
|
|
public override void Reset()
|
|
|
|
{
|
|
reg = 0;
|
|
|
|
SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
|
|
|
|
if (VROM_8K_SIZE != 0)
|
|
{
|
|
SetVROM_8K_Bank(0);
|
|
}
|
|
|
|
SetVRAM_Mirror(VRAM_VMIRROR);
|
|
}
|
|
|
|
//void Mapper082::WriteLow(WORD addr, BYTE data)
|
|
public override void WriteLow(ushort addr, byte data)
|
|
{
|
|
switch (addr)
|
|
{
|
|
case 0x7EF0:
|
|
if (reg != 0)
|
|
{
|
|
SetVROM_2K_Bank(4, data >> 1);
|
|
}
|
|
else
|
|
{
|
|
SetVROM_2K_Bank(0, data >> 1);
|
|
}
|
|
break;
|
|
|
|
case 0x7EF1:
|
|
if (reg != 0)
|
|
{
|
|
SetVROM_2K_Bank(6, data >> 1);
|
|
}
|
|
else
|
|
{
|
|
SetVROM_2K_Bank(2, data >> 1);
|
|
}
|
|
break;
|
|
|
|
case 0x7EF2:
|
|
if (reg != 0) SetVROM_1K_Bank(0, data);
|
|
else SetVROM_1K_Bank(4, data);
|
|
break;
|
|
case 0x7EF3:
|
|
if (reg != 0) SetVROM_1K_Bank(1, data);
|
|
else SetVROM_1K_Bank(5, data);
|
|
break;
|
|
case 0x7EF4:
|
|
if (reg != 0) SetVROM_1K_Bank(2, data);
|
|
else SetVROM_1K_Bank(6, data);
|
|
break;
|
|
case 0x7EF5:
|
|
if (reg != 0) SetVROM_1K_Bank(3, data);
|
|
else SetVROM_1K_Bank(7, data);
|
|
break;
|
|
|
|
case 0x7EF6:
|
|
reg = (byte)(data & 0x02);
|
|
if ((data & 0x01) != 0) SetVRAM_Mirror(VRAM_VMIRROR);
|
|
else SetVRAM_Mirror(VRAM_HMIRROR);
|
|
break;
|
|
|
|
case 0x7EFA:
|
|
SetPROM_8K_Bank(4, data >> 2);
|
|
break;
|
|
case 0x7EFB:
|
|
SetPROM_8K_Bank(5, data >> 2);
|
|
break;
|
|
case 0x7EFC:
|
|
SetPROM_8K_Bank(6, data >> 2);
|
|
break;
|
|
default:
|
|
base.WriteLow(addr, data);
|
|
break;
|
|
}
|
|
}
|
|
|
|
//void Mapper082::SaveState(LPBYTE p)
|
|
public override void SaveState(byte[] p)
|
|
{
|
|
p[0] = reg;
|
|
}
|
|
|
|
//void Mapper082::LoadState(LPBYTE p)
|
|
public override void LoadState(byte[] p)
|
|
{
|
|
reg = p[0];
|
|
}
|
|
|
|
public override bool IsStateSave()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
}
|
|
}
|