/// <summary>
/// Creates an instance of the virtual machine
/// </summary>
/// <param name="modelKey">The model key of the virtual machine</param>
/// <param name="editionKey">The edition key of the virtual machine</param>
/// <param name="devices">Devices to create the machine</param>
private SpectrumMachine(string modelKey, string editionKey, DeviceInfoCollection devices)
{
// --- Store model information
ModelKey = modelKey;
EditionKey = editionKey;
// --- Create the engine and set up properties
SpectrumVm = new SpectrumEngine(devices);
Cpu = new CpuZ80(SpectrumVm.Cpu);
var roms = new List <ReadOnlyMemorySlice>();
for (var i = 0; i < SpectrumVm.RomConfiguration.NumberOfRoms; i++)
{
roms.Add(new ReadOnlyMemorySlice(SpectrumVm.RomDevice.GetRomBytes(i)));
}
Roms = new ReadOnlyCollection <ReadOnlyMemorySlice>(roms);
PagingInfo = new MemoryPagingInfo(SpectrumVm.MemoryDevice);
Memory = new SpectrumMemoryContents(SpectrumVm.MemoryDevice, SpectrumVm.Cpu);
var ramBanks = new List <MemorySlice>();
if (SpectrumVm.MemoryConfiguration.RamBanks != null)
{
for (var i = 0; i < SpectrumVm.MemoryConfiguration.RamBanks; i++)
{
ramBanks.Add(new MemorySlice(SpectrumVm.MemoryDevice.GetRamBank(i)));
}
}
RamBanks = new ReadOnlyCollection <MemorySlice>(ramBanks);
Keyboard = new KeyboardEmulator(SpectrumVm);
ScreenConfiguration = SpectrumVm.ScreenConfiguration;
ScreenRenderingTable = new ScreenRenderingTable(SpectrumVm.ScreenDevice);
ScreenBitmap = new ScreenBitmap(SpectrumVm.ScreenDevice);
ScreenRenderingStatus = new ScreenRenderingStatus(SpectrumVm);
BeeperConfiguration = SpectrumVm.AudioConfiguration;
BeeperSamples = new AudioSamples(SpectrumVm.BeeperDevice);
BeeperProvider = SpectrumVm.BeeperProvider;
SoundConfiguration = SpectrumVm.SoundConfiguration;
SoundProvider = SpectrumVm.SoundProvider;
AudioSamples = new AudioSamples(SpectrumVm.SoundDevice);
Breakpoints = new CodeBreakpoints(SpectrumVm.DebugInfoProvider);
// --- Hook device events
SpectrumVm.TapeLoadDevice.LoadCompleted += (s, e) => FastLoadCompleted?.Invoke(s, e);
SpectrumVm.TapeSaveDevice.LeftSaveMode += (s, e) => LeftSaveMode?.Invoke(s, e);
// --- Initialize machine state
_clockProvider = GetProvider <IClockProvider>();
_physicalFrameClockCount = _clockProvider.GetFrequency() / (double)SpectrumVm.BaseClockFrequency *
ScreenConfiguration.ScreenRenderingFrameTactCount;
MachineState = VmState.None;
ExecutionCompletionReason = ExecutionCompletionReason.None;
}
/// <summary>
/// Allow the device to react to the start of a new frame
/// </summary>
public void OnCpuOperationCompleted()
{
SetTapeMode();
if (CurrentMode == TapeOperationMode.Load &&
HostVm.ExecuteCycleOptions.FastTapeMode &&
TapeFilePlayer != null &&
TapeFilePlayer.PlayPhase != PlayPhase.Completed &&
_cpu.Registers.PC == HostVm.RomInfo.LoadBytesRoutineAddress)
{
if (FastLoadFromTzx())
{
FastLoadCompleted?.Invoke(this, EventArgs.Empty);
}
}
}