AxibugEmuOnline/Core/VirtualNes.Core/Mapper/Mapper110.cs

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//////////////////////////////////////////////////////////////////////////
// Mapper110 //
//////////////////////////////////////////////////////////////////////////
using static VirtualNes.MMU;
using BYTE = System.Byte;
namespace VirtualNes.Core
{
public class Mapper110 : Mapper
{
BYTE reg0, reg1;
public Mapper110(NES parent) : base(parent)
{
}
public override void Reset()
{
SetPROM_32K_Bank(0);
SetVROM_8K_Bank(0);
reg0 = 0;
reg1 = 0;
}
//void Mapper110::WriteLow(WORD addr, BYTE data)
public override void WriteLow(ushort addr, byte data)
{
switch (addr)
{
case 0x4100:
reg1 = (byte)(data & 0x07);
break;
case 0x4101:
switch (reg1)
{
case 5:
SetPROM_32K_Bank(data);
break;
case 0:
reg0 = (byte)(data & 0x01);
SetVROM_8K_Bank(reg0);
break;
case 2:
reg0 = data;
SetVROM_8K_Bank(reg0);
break;
case 4:
reg0 = (byte)(reg0 | (data << 1));
SetVROM_8K_Bank(reg0);
break;
case 6:
reg0 = (byte)(reg0 | (data << 2));
SetVROM_8K_Bank(reg0);
break;
default:
break;
}
break;
default:
break;
}
}
//void Mapper110::SaveState(LPBYTE p)
public override void SaveState(byte[] p)
{
p[0] = reg0;
p[1] = reg1;
}
//void Mapper110::LoadState(LPBYTE p)
public override void LoadState(byte[] p)
{
reg0 = p[0];
reg1 = p[1];
}
public override bool IsStateSave()
{
return true;
}
}
}