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;
}
}
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;
}
}
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;
}
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);
}
}
}
internal void DisableInterrupt(Interrupts interrupt)
{
IF = Bitwise.ClearBit(IF, (int)interrupt);
}
internal void SetInterrupt(Interrupts interrupt)
{
IF = Bitwise.SetBit(IF, (int)interrupt);
}