Ejemplo n.º 1
0
        public void WriteByte(int address, int value)
        {
            switch (address)
            {
            case 0xFF01:
                lock (this)
                {
                    data[0] = (byte)value;
                }
                break;

            case 0xFF02:
                lock (this)
                {
                    bool oldTransfer = transferInProgress;
                    transferInProgress = Bitwise.IsBitOn(value, 7);
                    clockSpeed         = Bitwise.IsBitOn(value, 1);
                    shiftClock         = Bitwise.IsBitOn(value, 0);
                    if (!oldTransfer && transferInProgress && shiftClock && ENABLED && socket.IsAlive)
                    {
                        socket.Send(data);
                    }
                }
                break;

            default:
                Console.WriteLine("Can't read from address " + address.ToString() + " in LinkCable");
                break;
            }
        }
Ejemplo n.º 2
0
 public void StartDMA(int srcHi, int srcLo, int destHi, int destLo, int lenModStrt)
 {
     if (!IsEnabled && _gameboy.IsCGB)
     {
         Source       = (srcHi << 8) | (srcLo & 0xF0);
         Destination  = ((destHi & 0x1F) << 8) | (destLo & 0xF0);
         Length       = ((lenModStrt & 0x7F) + 1) * 16;
         IsHDMA       = Bitwise.IsBitOn(lenModStrt, 7);
         Destination |= 0x8000;
         IsEnabled    = true;
         _lastIndex   = 0;
     }
 }
Ejemplo n.º 3
0
        public void Tick()
        {
            if (!Bitwise.IsBitOn(_gameboy.Mmu.Joypad, 4)) // Direction Keys
            {
                _gameboy.Mmu.Joypad = (_gameboy.Mmu.Joypad & 0xF0) | (directionInput);
                if (setDirectionInterrupt)
                {
                    _gameboy.Mmu.SetInterrupt(Interrupts.Joypad);
                }
            }
            if (!Bitwise.IsBitOn(_gameboy.Mmu.Joypad, 5)) // Button Keys
            {
                _gameboy.Mmu.Joypad = (_gameboy.Mmu.Joypad & 0xF0) | (buttonInput);
                if (setButtonInterrupt)
                {
                    _gameboy.Mmu.SetInterrupt(Interrupts.Joypad);
                }
            }

            setButtonInterrupt    = false;
            setDirectionInterrupt = false;
        }
Ejemplo n.º 4
0
        public void SetInput(Button button, bool Pressed)
        {
            int buttonVal = (int)button;
            int bitIndex  = buttonVal % 4;

            if (buttonVal > 3)
            {
                if (Pressed)
                {
                    if (Bitwise.IsBitOn(buttonInput, bitIndex))
                    {
                        setButtonInterrupt = true;
                    }
                    buttonInput = Bitwise.ClearBit(buttonInput, bitIndex);
                }
                else
                {
                    buttonInput = Bitwise.SetBit(buttonInput, bitIndex);
                }
            }
            else
            {
                if (Pressed)
                {
                    if (Bitwise.IsBitOn(directionInput, bitIndex))
                    {
                        setDirectionInterrupt = true;
                    }
                    directionInput = Bitwise.ClearBit(directionInput, bitIndex);
                }
                else
                {
                    directionInput = Bitwise.SetBit(directionInput, bitIndex);
                }
            }
        }
Ejemplo n.º 5
0
 internal void DisableInterrupt(Interrupts interrupt)
 {
     IF = Bitwise.ClearBit(IF, (int)interrupt);
 }
Ejemplo n.º 6
0
 internal void SetInterrupt(Interrupts interrupt)
 {
     IF = Bitwise.SetBit(IF, (int)interrupt);
 }