/// <summary>
/// Initializes a new instance of the <see cref="TimerRegisters"/> class.
/// </summary>
/// <param name="timerControlRegister">The timer control register.</param>
/// <param name="interruptFlagsRegister">The interrupt flags register.</param>
/// <param name="instructionTimer">The instruction timer.</param>
public TimerRegisters(ITimerControlRegister timerControlRegister, IInterruptFlagsRegister interruptFlagsRegister, IInstructionTimer instructionTimer)
{
TimerControlRegister = timerControlRegister;
_interruptFlagsRegister = interruptFlagsRegister;
TimerModuloRegister = new SimpleRegister(0xff06, "Timer Modulo (TMA R/W)");
TimerCounterRegister = new SimpleRegister(0xff05, "Timer counter (TIMA R/W)");
instructionTimer.TimingSync += timings =>
{
if (!TimerControlRegister.TimerEnabled)
{
return;
}
_cyclesSinceLastIncrement += timings.MachineCycles;
if (_cyclesSinceLastIncrement > TimerControlRegister.TimerFrequency)
{
if (TimerCounterRegister.Register == 0xff)
{
// Overflow.
TimerCounterRegister.Register = TimerModuloRegister.Register;
_interruptFlagsRegister.UpdateInterrupts(InterruptFlag.TimerOverflow);
}
else
{
TimerCounterRegister.Register++;
}
}
_cyclesSinceLastIncrement -= TimerControlRegister.TimerFrequency;
};
}
/// <summary>
/// Initializes a new instance of the <see cref="Gpu"/> class.
/// </summary>
/// <param name="gameBoyConfig">The game boy configuration.</param>
/// <param name="interruptFlagsRegister">The interrupt flags register.</param>
/// <param name="gpuRegisters">The gpu registers.</param>
/// <param name="renderer">The renderer.</param>
/// <param name="timer">The timer.</param>
public Gpu(IGameBoyConfig gameBoyConfig,
IInterruptFlagsRegister interruptFlagsRegister,
IGpuRegisters gpuRegisters,
IRenderer renderer,
IInstructionTimer timer)
{
_interruptFlagsRegister = interruptFlagsRegister;
_gpuRegisters = gpuRegisters;
_renderer = renderer;
_spriteRam = new ArrayBackedMemoryBank(SpriteRamConfig);
_tileRam = new ArrayBackedMemoryBank(MapRamConfig);
_gpuRegisters.GpuMode = GpuMode.VerticalBlank;
_currentTimings = 0;
_gpuRegisters.GpuMode = GpuMode.VerticalBlank;
_currentTimings = 0;
_gpuRegisters.CurrentScanlineRegister.Scanline = 0x92;
if (gameBoyConfig.RunGpu)
{
timer.TimingSync += Sync;
}
_lcdBuffer = new Frame(LcdWidth, LcdHeight);
_paintingTaskCompletionSource = new TaskCompletionSource <bool>();
_disposed = false;
Task.Factory.StartNew(() => PaintLoop().Wait(), TaskCreationOptions.LongRunning);
var timerFrequency = TimeSpan.FromSeconds(1);
_metricsTimer = new Timer(UpdateMetricsCallback, null, timerFrequency, timerFrequency);
}
/// <summary>
/// Initializes a new instance of the <see cref="GpuRegisters"/> class.
/// </summary>
/// <param name="lcdControlRegister">The LCD control register.</param>
/// <param name="currentScanlineRegister">The current scanline register.</param>
/// <param name="lcdMonochromePaletteRegister">The LCD monochrome palette register.</param>
/// <param name="lcdStatusRegister">The LCD status register.</param>
/// <param name="interruptFlagsRegister">The interrupt flags register.</param>
public GpuRegisters(ILcdControlRegister lcdControlRegister,
ICurrentScanlineRegister currentScanlineRegister,
ILcdMonochromePaletteRegister lcdMonochromePaletteRegister,
ILcdStatusRegister lcdStatusRegister,
IInterruptFlagsRegister interruptFlagsRegister)
{
LcdStatusRegister = lcdStatusRegister;
_interruptFlagsRegister = interruptFlagsRegister;
LcdControlRegister = lcdControlRegister;
CurrentScanlineRegister = currentScanlineRegister;
LcdMonochromePaletteRegister = lcdMonochromePaletteRegister;
ScrollXRegister = new SimpleRegister(0xff43, "Background Horizontal Scrolling (SCROLLX R/W)");
ScrollYRegister = new SimpleRegister(0xff42, "Background Vertical Scrolling (SCROLLY R/W)");
CurrentScanlineCompareRegister = new SimpleRegister(0xff45, "LY Compare (LYC R/W)");
WindowYPositionRegister = new SimpleRegister(0xff4a, "Window Y Position (WY R/W)");
WindowXPositionRegister = new SimpleRegister(0xff4b, "Window X Position minus 7 (WX R/W)");
}
/// <summary>
/// Initializes a new instance of the <see cref="SyncSerialPort"/> class.
/// </summary>
/// <param name="interruptFlagsRegister">The interrupt flags register.</param>
public SyncSerialPort(IInterruptFlagsRegister interruptFlagsRegister)
{
_interruptFlagsRegister = interruptFlagsRegister;
}
/// <summary>
/// Initializes a new instance of the <see cref="JoyPad"/> class.
/// </summary>
/// <param name="interruptFlagsRegister">The interrupt flags register.</param>
public JoyPad(IInterruptFlagsRegister interruptFlagsRegister)
{
_interruptFlagsRegister = interruptFlagsRegister;
_matrixColumn = MatrixColumn.None;
_buttons = JoyPadButtonFlags.None;
}
