public byte ReadMemory8(ushort address)
{
byte returnvalue = 0;
if (address < 0x2000)
{
if (address < 0x800)
{
returnvalue = scratchRam[0][address];
}
else if (address < 0x1000)
{
returnvalue = scratchRam[1][address - 0x800];
//Console.WriteLine("I need ram Mirroring {0:x}", address);
}
else if (address < 0x1800)
{
returnvalue = scratchRam[2][address - 0x1000];
//Console.WriteLine("I need ram Mirroring {0:x}", address);
}
//else if (address < 0x2000) {
else
{
returnvalue = scratchRam[3][address - 0x1800];
//Console.WriteLine("I need ram Mirroring {0:x}", address);
}
//returnvalue = scratchRam[address >> 11][address & 0x7ff];
}
else if (address < 0x6000)
{
switch (address)
{
case (0x2002): returnvalue = myPpu.StatusRegisterRead(); break;
case (0x2004): returnvalue = myPpu.SpriteRamIORegisterRead(); break;
case (0x2007): returnvalue = myPpu.VramIORegisterRead(); break;
//case (0x4015): returnvalue = myPPU.Sound_Signal_Register_Read(); break;
case (0x4016): returnvalue = myJoypad.Joypad1Read(); break;
case (0x4017): returnvalue = Joypad.Joypad2Read(); break;
//default: Console.WriteLine("UNKOWN READ: {0:x}", address); break;
}
}
else if (address < 0x8000)
{
returnvalue = saveRam[address - 0x6000];
if (myCartridge.Mapper == 5)
{
returnvalue = 1;
}
}
else
{
returnvalue = myMapper.ReadPrgRom(address);
}
return(returnvalue);
}
