public void OnFrameCompletedWorksWithLowPulseAfterTheFirsttact()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentFrameTact(100);
beeperDevice.ProcessEarBitValue(false, false);
spectrum.SetCurrentFrameTact(spectrum.FrameTacts);
beeperDevice.OnFrameCompleted();
// --- Assert
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.Pulses.Count.ShouldBe(2);
beeperDevice.LastEarBit.ShouldBeFalse();
beeperDevice.LastPulseTact.ShouldBe(100);
var pulse1 = beeperDevice.Pulses[0];
pulse1.EarBit.ShouldBeTrue();
pulse1.Lenght.ShouldBe(100);
var pulse2 = beeperDevice.Pulses[1];
pulse2.EarBit.ShouldBeFalse();
pulse2.Lenght.ShouldBe(spectrum.FrameTacts - 100);
}
public void OnNewFrameCreatesOverflowSample(int overflow, int[] tacts, float?sample)
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
var initialBit = false;
// --- Act
foreach (var tact in tacts)
{
spectrum.SetCurrentCpuTact(tact);
beeperDevice.ProcessEarBitValue(false, initialBit);
initialBit = !initialBit;
}
spectrum.SetCurrentCpuTact(69888 + overflow);
beeperDevice.OnFrameCompleted();
var overflowBefore = beeperDevice.Overflow;
beeperDevice.OnNewFrame();
// --- Assert
beeperDevice.SamplesIndex.ShouldBe(sample == null ? 0 : 1);
overflowBefore.ShouldBe(overflow);
beeperDevice.Overflow.ShouldBe(0);
if (sample.HasValue)
{
beeperDevice.AudioSamples[0].ShouldBe(sample.Value);
}
}
public void OnFrameCompletedWorksWithMultiplePulsesAndOverflow(int[] tacts, float[] samples)
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
var initialBit = false;
// --- Act
foreach (var tact in tacts)
{
spectrum.SetCurrentCpuTact(tact);
beeperDevice.ProcessEarBitValue(false, initialBit);
initialBit = !initialBit;
}
spectrum.SetCurrentCpuTact(69888 + 11);
beeperDevice.OnFrameCompleted();
// --- Assert
beeperDevice.LastEarBit.ShouldBe(!initialBit);
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.Overflow.ShouldBe(11);
beeperDevice.LastSampleTact.ShouldBe(beeperDevice.HostVm.AudioConfiguration.TactsPerSample * 699);
for (var i = 0; i < samples.Length; i++)
{
samples[i].ShouldBe(beeperDevice.AudioSamples[i]);
}
var remainingSample = beeperDevice.LastEarBit ? 1.0f : 0.0f;
for (var i = samples.Length; i < 699; i++)
{
beeperDevice.AudioSamples[i].ShouldBe(remainingSample);
}
}
public void DeviceIsInitializedProperly()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
// --- Act
beeperDevice.OnAttachedToVm(spectrum);
// --- Assert
beeperDevice.LastEarBit.ShouldBeTrue();
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.LastSampleTact.ShouldBe(0);
beeperDevice.AudioSamples.Length.ShouldBe(699);
}
public void DeviceIsInitializedProperty()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
// --- Act
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Assert
beeperDevice.Pulses.Count.ShouldBe(0);
beeperDevice.LastEarBit.ShouldBeTrue();
beeperDevice.LastPulseTact.ShouldBe(0);
beeperDevice.FrameCount.ShouldBe(0);
}
public void ProcessEarBitWorksForTheFirstHighPulse()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
beeperDevice.ProcessEarBitValue(false, true);
// --- Assert
beeperDevice.Pulses.Count.ShouldBe(0);
beeperDevice.LastEarBit.ShouldBeTrue();
beeperDevice.LastPulseTact.ShouldBe(0);
}
public void SampleLengthIsCalculatedProperly(int frames, int[] lenghts)
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act/Assert
for (var i = 1; i <= frames; i++)
{
spectrum.SetCurrentCpuTact(69888 * i);
beeperDevice.OnFrameCompleted();
beeperDevice.AudioSamples.Length.ShouldBe(lenghts[i - 1]);
beeperDevice.OnNewFrame();
}
}
public void OnNewFrameInitsNextFrame()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
beeperDevice.OnNewFrame();
// --- Assert
beeperDevice.FrameCount.ShouldBe(1);
beeperDevice.Pulses.Count.ShouldBe(0);
beeperDevice.LastEarBit.ShouldBeTrue();
beeperDevice.LastPulseTact.ShouldBe(0);
}
public void ProcessEarBitWorksWithLowPulseAtTact0()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentFrameTact(0);
beeperDevice.ProcessEarBitValue(false, false);
// --- Assert
beeperDevice.Pulses.Count.ShouldBe(0);
beeperDevice.LastEarBit.ShouldBeFalse();
beeperDevice.LastPulseTact.ShouldBe(0);
}
public void OnFrameCompletedWorksWithHighPulse()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
beeperDevice.ProcessEarBitValue(false, true);
beeperDevice.OnFrameCompleted();
// --- Assert
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.Pulses.Count.ShouldBe(1);
beeperDevice.LastEarBit.ShouldBeTrue();
beeperDevice.LastPulseTact.ShouldBe(0);
}
public void FirstPulseIsProcessedProperly(bool pulse, int tact, float[] samples)
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentCpuTact(tact);
beeperDevice.ProcessEarBitValue(false, pulse);
// --- Assert
beeperDevice.LastSampleTact.ShouldBe(beeperDevice.HostVm.AudioConfiguration.TactsPerSample * samples.Length);
for (var i = 0; i < samples.Length; i++)
{
samples[i].ShouldBe(beeperDevice.AudioSamples[i]);
}
}
public void ProcessEarBitWorksForTheFirstLowPulse()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentFrameTact(100);
beeperDevice.ProcessEarBitValue(false, false);
// --- Assert
beeperDevice.Pulses.Count.ShouldBe(1);
beeperDevice.LastEarBit.ShouldBeFalse();
beeperDevice.LastPulseTact.ShouldBe(100);
var pulse = beeperDevice.Pulses[0];
pulse.EarBit.ShouldBeTrue();
pulse.Lenght.ShouldBe(100);
}
public void OnNewFrameKeepsLastEarBitValue()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentFrameTact(100);
beeperDevice.ProcessEarBitValue(false, false);
spectrum.SetCurrentFrameTact(spectrum.FrameTacts);
beeperDevice.OnFrameCompleted();
beeperDevice.OnNewFrame();
// --- Assert
beeperDevice.FrameCount.ShouldBe(1);
beeperDevice.Pulses.Count.ShouldBe(0);
beeperDevice.LastEarBit.ShouldBeFalse();
beeperDevice.LastPulseTact.ShouldBe(0);
}
public void OnFrameCompletedWorksWithNoPulseEndOverflow()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentCpuTact(69888 + 11);
beeperDevice.OnFrameCompleted();
// --- Assert
beeperDevice.LastEarBit.ShouldBeTrue();
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.Overflow.ShouldBe(11);
beeperDevice.AudioSamples.Length.ShouldBe(699);
foreach (var sample in beeperDevice.AudioSamples)
{
sample.ShouldBe(1.0f);
}
}
public void ProcessEarBitWorksForFourPulses()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentFrameTact(100);
beeperDevice.ProcessEarBitValue(false, false);
spectrum.SetCurrentFrameTact(140);
beeperDevice.ProcessEarBitValue(false, true);
spectrum.SetCurrentFrameTact(160);
beeperDevice.ProcessEarBitValue(false, true);
spectrum.SetCurrentFrameTact(190);
beeperDevice.ProcessEarBitValue(false, false);
// --- Assert
beeperDevice.Pulses.Count.ShouldBe(3);
beeperDevice.LastEarBit.ShouldBeFalse();
beeperDevice.LastPulseTact.ShouldBe(190);
var pulse1 = beeperDevice.Pulses[0];
pulse1.EarBit.ShouldBeTrue();
pulse1.Lenght.ShouldBe(100);
var pulse2 = beeperDevice.Pulses[1];
pulse2.EarBit.ShouldBeFalse();
pulse2.Lenght.ShouldBe(40);
var pulse3 = beeperDevice.Pulses[2];
pulse3.EarBit.ShouldBeTrue();
pulse3.Lenght.ShouldBe(50);
}
public void MultiplePulsesAreProcessedProperly(int[] tacts, float[] samples)
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
var initialBit = false;
// --- Act
foreach (var tact in tacts)
{
spectrum.SetCurrentCpuTact(tact);
beeperDevice.ProcessEarBitValue(false, initialBit);
initialBit = !initialBit;
}
// --- Assert
beeperDevice.LastSampleTact.ShouldBe(beeperDevice.HostVm.AudioConfiguration.TactsPerSample * samples.Length);
for (var i = 0; i < samples.Length; i++)
{
samples[i].ShouldBe(beeperDevice.AudioSamples[i]);
}
}
/// <summary>Initializes a new instance of the <see cref="T:System.Object" /> class.</summary>
public Spectrum48(
IRomProvider romProvider,
IClockProvider clockProvider,
IKeyboardProvider keyboardProvider,
IScreenFrameProvider pixelRenderer,
IEarBitFrameProvider earBitFrameProvider = null,
ITapeContentProvider loadContentProvider = null,
ISaveToTapeProvider tapeSaveToTapeProvider = null)
{
// --- Init the CPU
MemoryDevice = new Spectrum48MemoryDevice();
PortDevice = new Spectrum48PortDevice();
Cpu = new Z80Cpu(MemoryDevice, PortDevice);
OsInitialized = false;
// --- Setup the clock
Clock = clockProvider;
// --- Set up Spectrum devices
BorderDevice = new BorderDevice();
ScreenDevice = new Spectrum48ScreenDevice(pixelRenderer);
BeeperDevice = new BeeperDevice(earBitFrameProvider);
KeyboardDevice = new KeyboardDevice(keyboardProvider);
InterruptDevice = new InterruptDevice(InterruptTact);
TapeDevice = new TapeDevice(loadContentProvider, tapeSaveToTapeProvider);
// --- Carry out frame calculations
ResetUlaTact();
_frameTacts = ScreenDevice.ScreenConfiguration.UlaFrameTactCount;
PhysicalFrameClockCount = Clock.GetFrequency() / (double)ClockFrequeny * _frameTacts;
FrameCount = 0;
Overflow = 0;
_frameCompleted = true;
// --- Collect Spectrum devices
_spectrumDevices.Add(MemoryDevice);
_spectrumDevices.Add(PortDevice);
_spectrumDevices.Add(BorderDevice);
_spectrumDevices.Add(ScreenDevice);
_spectrumDevices.Add(BeeperDevice);
_spectrumDevices.Add(KeyboardDevice);
_spectrumDevices.Add(InterruptDevice);
_spectrumDevices.Add(TapeDevice);
// --- Now, prepare devices to find each other
foreach (var device in _spectrumDevices)
{
device.OnAttachedToVm(this);
}
// --- Prepare bound devices
_frameBoundDevices = _spectrumDevices
.OfType <IFrameBoundDevice>()
.ToList();
_cpuBoundDevices = _spectrumDevices
.OfType <ICpuOperationBoundDevice>()
.ToList();
DebugInfoProvider = new SpectrumDebugInfoProvider();
// --- Init the ROM
InitRom(romProvider, "ZXSpectrum48");
}