SetupSpritePalletes(DisplayDefinition disDef, Memory memory, MMR pallete)
{
if (pallete == MMR.OBP0)
{
byte obp0 = memory.LowLevelRead((ushort)MMR.OBP0);
disDef.SpritePallete0[0] = 0x00000000; // Sprite colors are trasparent
for (int color = 1; color < 4; ++color)
{
int down = (obp0 >> (2 * color)) & 1;
int up = (obp0 >> (2 * color + 1)) & 1;
int index = (up << 1) | down;
disDef.SpritePallete0[color] = disDef.SpriteColors[index];
}
}
else if (pallete == MMR.OBP1)
{
byte obp1 = memory.LowLevelRead((ushort)MMR.OBP1);
disDef.SpritePallete1[1] = 0x00000000; // Sprite colors are trasparent
for (int color = 1; color < 4; ++color)
{
int down = (obp1 >> (2 * color)) & 1;
int up = (obp1 >> (2 * color + 1)) & 1;
int index = (up << 1) | down;
disDef.SpritePallete1[color] = disDef.SpriteColors[index];
}
}
else
{
throw new InvalidProgramException("Invalid pallete register given");
}
}
public void GetMeetsWithVenueName()
{
//Setup
var listOfMeets = new List <Meet>
{
new Meet()
{
MeetDate = DateTime.Now,
MeetName = "Test Meet 1",
MeetId = 1,
MeetVenue = "Test Venue 1",
PoolLength = "11"
},
new Meet()
{
MeetDate = DateTime.Now,
MeetName = "Test Meet 2",
MeetId = 2,
MeetVenue = "Test Venue 1",
PoolLength = "21"
}
};
var mockMeetsRepo = new Mock <IMeetRepo>();
mockMeetsRepo.Setup(MMR => MMR.GetMeets("Test Venue 1")).Returns(listOfMeets);
var sut = new MeetsController(mockMeetsRepo.Object);
//Action
var res = sut.GetMeets("Test Venue 1");
//Assert
res.Should().BeOfType <OkNegotiatedContentResult <List <Meet> > >();
res.As <OkNegotiatedContentResult <List <Meet> > >().Content.Should().BeEquivalentTo(listOfMeets);
}
public void GetMeetsFormattedByStartAndEndDateReturnsMeetsWithinStartAndEndDate()
{
//Setup
var listOfMeets = new List <Meet>
{
new Meet()
{
MeetDate = new DateTime(2019, 04, 14),
MeetName = "Test Meet 1",
MeetId = 1,
MeetVenue = "Test Venue 1",
PoolLength = "11"
},
new Meet()
{
MeetDate = new DateTime(2019, 04, 13),
MeetName = "Test Meet 2",
MeetId = 2,
MeetVenue = "Test Venue 1",
PoolLength = "21"
}
};
var mockMeetsRepo = new Mock <IMeetRepo>();
mockMeetsRepo.Setup(MMR => MMR.GetMeets(new DateTime(2019, 04, 12), new DateTime(2019, 04, 15))).Returns(listOfMeets);
var sut = new MeetsController(mockMeetsRepo.Object);
//Action
var res = sut.GetMeetsFormatted(new DateTime(2019, 04, 12), new DateTime(2019, 04, 15));
//Assert
res.Should().BeOfType <OkNegotiatedContentResult <List <string> > >();
res.As <OkNegotiatedContentResult <List <string> > >().Content.Should().BeEquivalentTo(FormatMeets(listOfMeets));
}
internal void HandleMemoryChange(MMR mappedRegister, byte value)
{
switch (mappedRegister)
{
case MMR.LCDC:
// We set all the LCDC bits
for (int i = 0; i < 8; ++i)
{
_state.LCDCBits[i] = (value & (1 << i)) != 0;
}
break;
case MMR.STAT:
_state.STAT = value;
break;
case MMR.SCY:
_state.SCY = value;
break;
case MMR.SCX:
_state.SCX = value;
break;
case MMR.LY:
_state.CurrentLine = 0;
break;
case MMR.LYC:
_state.LYC = value;
break;
case MMR.DMA:
LoadSprites();
break;
case MMR.BGP:
DisFuncs.SetupTilePallete(_disDef, _memory);
break;
case MMR.OBP0:
DisFuncs.SetupSpritePalletes(_disDef, _memory, MMR.OBP0);
break;
case MMR.OBP1:
DisFuncs.SetupSpritePalletes(_disDef, _memory, MMR.OBP1);
break;
case MMR.WY:
_state.WY = value;
break;
case MMR.WX:
_state.WX = value;
break;
default:
throw new InvalidProgramException("All cases should be handled...");
}
}
/// <summary>
/// Creates a DiscordEmbed to represent the profile
/// </summary>
/// <returns></returns>
public DiscordEmbed CreateEmbed()
{
var main = TopOperators.FirstOrDefault();
StringBuilder desc = new StringBuilder();
desc.AppendLine($"**Level {Level}**");
desc.AppendLine($"**{main.Key} Main**");
DiscordEmbedBuilder builder = new DiscordEmbedBuilder();
builder.WithAuthor(this.Name, this.URL, this.Avatar).WithDescription(desc.ToString());
if (Rank != Rank.Unranked)
{
builder.WithColor(Rank.GetColor())
.AddField("MMR", MMR.ToString(), true).AddField("Best", BestMMR.ToString(), true).AddField("Rank", RankText, true);
}
builder.AddField("=== Casual Time", CasualStatistics.TimePlayed)
.AddField("Kills", CasualStatistics.Kills.ToString(), true).AddField("Deaths", CasualStatistics.Deaths.ToString(), true).AddField("KD", CasualStatistics.KD.ToString("F2"), true)
.AddField("Wins", CasualStatistics.Wins.ToString(), true).AddField("Loss", CasualStatistics.Losses.ToString(), true).AddField("Win%", CasualStatistics.WinPercent.ToString("F2"), true)
.WithThumbnailUrl(main.Value);
if (Rank != Rank.Unranked)
{
builder.AddField("=== Ranked Time", RankedStatistics.TimePlayed)
.AddField("Kills", RankedStatistics.Kills.ToString(), true).AddField("Deaths", RankedStatistics.Deaths.ToString(), true).AddField("KD", RankedStatistics.KD.ToString("F2"), true)
.AddField("Wins", RankedStatistics.Wins.ToString(), true).AddField("Loss", RankedStatistics.Losses.ToString(), true).AddField("Win%", RankedStatistics.WinPercent.ToString("F2"), true);
}
return(builder.Build());
}
internal void HandleMemoryChange(MMR register, byte value)
{
switch (register)
{
case MMR.TIMA:
_state.TimaCounter = value;
this._memory.LowLevelWrite((ushort)MMR.TIMA, value);
break;
case MMR.TMA:
_state.TmaValue = value;
this._memory.LowLevelWrite((ushort)MMR.TMA, value);
break;
case MMR.TAC:
// Clock select is the bits 0 and 1 of the TAC register
byte clockSelect = (byte)(value & 0x03);
switch (clockSelect)
{
case 1:
_state.TacMask = 0x000F; // f/2^4 0000 0000 0000 1111, (262144 Hz)
break;
case 2:
_state.TacMask = 0x003F; // f/2^6 0000 0000 0011 1111, (65536 Hz)
break;
case 3:
_state.TacMask = 0x00FF; // f/2^8 0000 0000 1111 1111, (16384 Hz)
break;
default:
_state.TacMask = 0x03FF; // f/2^10 0000 0011 1111 1111, (4096 Hz)
break;
}
// We restart the counter
_state.TacCounter = 0;
// TAC has a 0xF8 mask (only lower 3 bits are useful)
this._memory.LowLevelWrite((ushort)MMR.TAC, (byte)(0xF8 | value));
break;
}
}
public void UpdateMeetValidMeetAndDbSuccessfulReturnsOk()
{
//Setup
var mockMeetsRepo = new Mock <IMeetRepo>();
var meet = new Meet()
{
MeetDate = new DateTime(),
MeetName = "Test Meet",
MeetId = 1,
MeetVenue = "Test Venue",
PoolLength = "11"
};
mockMeetsRepo.Setup(MMR => MMR.UpdateMeet(meet)).Returns(true);
var sut = new MeetsController(mockMeetsRepo.Object);
//Action
var res = sut.UpdateMeet(meet);
//Assert
res.Should().BeOfType <OkResult>();
}
public void UpdateMeetValidMeetAndDbUnSuccessfulReturnsBadRequest()
{
//Setup
var mockMeetsRepo = new Mock <IMeetRepo>();
var meet = new Meet()
{
MeetDate = new DateTime(),
MeetName = "Test Meet",
MeetId = 1,
MeetVenue = "Test Venue",
PoolLength = "11"
};
mockMeetsRepo.Setup(MMR => MMR.UpdateMeet(meet)).Returns(false);
var sut = new MeetsController(mockMeetsRepo.Object);
//Action
var res = sut.UpdateMeet(meet);
//Assert
res.Should().BeOfType <BadRequestErrorMessageResult>();
res.As <BadRequestErrorMessageResult>().Message.Should().Be("Meet failed to be updated");
}
internal SquareChannel(Memory memory, FrameSequencer frameSequencer,
int sampleRate, int numChannels, int sampleSize, int channelIndex,
MMR sweepRegister, MMR wavePatternDutyRegister, MMR volumeEnvelopeRegister,
MMR freqLowRegister, MMR freqHighRegister)
{
_memory = memory;
_frameSequencer = frameSequencer;
SampleRate = sampleRate;
_msSampleRate = SampleRate / 1000;
NumChannels = numChannels;
SampleSize = sampleSize;
_buffer = new short[SampleRate * NumChannels * SampleSize * _milliseconds / 1000];
_channelIndex = channelIndex;
_soundEventQueue = new SoundEventQueue(1000);
// Register setup
_sweepRegister = sweepRegister;
_wavePatternDutyRegister = wavePatternDutyRegister;
_volumeEnvelopeRegister = volumeEnvelopeRegister;
_freqLowRegister = freqLowRegister;
_freqHighRegister = freqHighRegister;
}
internal SquareChannel(Memory memory, FrameSequencer frameSequencer,
int sampleRate, int numChannels, int sampleSize, int channelIndex,
MMR sweepRegister, MMR wavePatternDutyRegister, MMR volumeEnvelopeRegister,
MMR freqLowRegister, MMR freqHighRegister)
{
_memory = memory;
_frameSequencer = frameSequencer;
SampleRate = sampleRate;
_msSampleRate = SampleRate / 1000;
NumChannels = numChannels;
SampleSize = sampleSize;
_buffer = new short[SampleRate * NumChannels * SampleSize * _milliseconds / 1000];
_channelIndex = channelIndex;
_soundEventQueue = new SoundEventQueue(1000);
// Register setup
_sweepRegister = sweepRegister;
_wavePatternDutyRegister = wavePatternDutyRegister;
_volumeEnvelopeRegister = volumeEnvelopeRegister;
_freqLowRegister = freqLowRegister;
_freqHighRegister = freqHighRegister;
}
internal void HandleMemoryChange(MMR register, byte value, bool updatedEnabledFlag = true)
{
if (!_state.Enabled)
{
// When powered off, the internal length can be changed (DMG only)
switch (register)
{
case MMR.NR11:
_channel1.ChangeLength(value);
break;
case MMR.NR21:
_channel2.ChangeLength(value);
break;
case MMR.NR31:
_channel3.ChangeLength(value);
break;
case MMR.NR41:
_channel4.ChangeLength(value);
break;
}
// Other than turning on, all other writes are ignored
if (register != MMR.NR52) { return; }
}
// We store previous channel status
bool channel1Enabled = _channel1.Enabled;
bool channel2Enabled = _channel2.Enabled;
bool channel3Enabled = _channel3.Enabled;
bool channel4Enabled = _channel4.Enabled;
bool prevEnabled = _state.Enabled;
switch (register)
{
case MMR.NR10:
case MMR.NR11:
case MMR.NR12:
case MMR.NR13:
case MMR.NR14:
_channel1.HandleMemoryChange(register, value);
break;
case MMR.NR21:
case MMR.NR22:
case MMR.NR23:
case MMR.NR24:
_channel2.HandleMemoryChange(register, value);
break;
case MMR.NR30:
case MMR.NR31:
case MMR.NR32:
case MMR.NR33:
case MMR.NR34:
_channel3.HandleMemoryChange(register, value);
break;
case MMR.NR41:
case MMR.NR42:
case MMR.NR43:
case MMR.NR44:
_channel4.HandleMemoryChange(register, value);
break;
case MMR.NR50:
// NOTE(Cristian): No Vin support
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR51:
// TODO(Cristian): Implement this logic
_state.OutputChannel1Left = ((value & 0x01) != 0);
_state.OutputChannel2Left = ((value & 0x02) != 0);
_state.OutputChannel3Left = ((value & 0x04) != 0);
_state.OutputChannel4Left = ((value & 0x08) != 0);
_state.OutputChannel1Right = ((value & 0x10) != 0);
_state.OutputChannel2Right = ((value & 0x20) != 0);
_state.OutputChannel3Right = ((value & 0x40) != 0);
_state.OutputChannel4Right = ((value & 0x80) != 0);
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR52:
bool apuEnabled = (Utils.UtilFuncs.TestBit(value, 7) != 0);
if (!apuEnabled)
{
// Powering down the APU should power down all the registers
//for (ushort r = (ushort)MMR.NR10; r < (ushort)MMR.NR52; ++r)
//{
// HandleMemoryChange((MMR)r, 0, false);
//}
_channel1.PowerOff();
_channel1.SetEnabled(false);
_channel2.PowerOff();
_channel2.SetEnabled(false);
_channel3.PowerOff();
_channel3.SetEnabled(false);
_channel4.PowerOff();
_channel4.SetEnabled(false);
_memory.LowLevelWrite((ushort)MMR.NR50, 0);
_memory.LowLevelWrite((ushort)MMR.NR51, 0);
}
else if (!_state.Enabled)
{
_frameSequencer.Reset();
}
// We update at the end because otherwise the recursive calls would
// be rejected by the guard
_state.Enabled = apuEnabled;
break;
}
// NOTE(Cristian): This is an "optimization" for when NR52 is disabled,
// All the registers are set to 0. A normal recursive call
// would write the NR52 memory several times unnecessarily
if (!updatedEnabledFlag) { return; }
// We compare to see if we have to change the NR52 byte
if ((channel1Enabled != _channel1.Enabled) ||
(channel2Enabled != _channel2.Enabled) ||
(channel3Enabled != _channel3.Enabled) ||
(channel4Enabled != _channel4.Enabled) ||
(prevEnabled != _state.Enabled))
{
byte nr52 = 0x70;
if (_state.Enabled)
{
nr52 = (byte)((_channel1.Enabled ? 0x1 : 0) | // bit 0
(_channel2.Enabled ? 0x2 : 0) | // bit 1
(_channel3.Enabled ? 0x4 : 0) | // bit 2
(_channel4.Enabled ? 0x8 : 0) | // bit 3
0xF0); // bit 4-7 are 1
}
// We know bit 7 is 1 because otherwise the whole register is 0x70
_memory.LowLevelWrite((ushort)MMR.NR52, nr52);
}
}
public void HandleMemoryChange(MMR register, byte value)
{
byte before = _memory.LowLevelRead((ushort)register);
#if SoundTiming
//Timeline[TimelineCount++] = (long)register;
//Timeline[TimelineCount++] = value;
#endif
if (register == _sweepRegister)
{
// Sweep Shift Number (Bits 0-2)
_state.SweepShifts = value & 0x07;
// Sweep Direction (Bit 3)
bool prevSweepUp = _state.SweepUp;
_state.SweepUp = ((value & 0x08) == 0);
// Going from neg->pos after a calc has occurred disabled the channel
if (_state.SweepCalcOcurred && !prevSweepUp && _state.SweepUp)
{
SetEnabled(false);
}
_state.SweepCalcOcurred = false;
// Sweep Time (Bits 4-6)
_state.SweepLength = ((value >> 4) & 0x07);
// Bit 7 is always 1
_memory.LowLevelWrite((ushort)register, (byte)(value | 0x80));
}
else if (register == _wavePatternDutyRegister)
{
// TODO(Cristian): Wave Pattern Duty
_state.SoundLengthCounter = 0x3F - (value & 0x3F);
_memory.LowLevelWrite((ushort)register, value);
}
else if (register == _volumeEnvelopeRegister)
{
_state.EnvelopeTicks = value & 0x7;
_state.EnvelopeUp = (value & 0x8) != 0;
_state.EnvelopeDefaultValue = value >> 4;
// Putting volume 0 disables the channel
if ((_state.EnvelopeDefaultValue == 0) && !_state.EnvelopeUp)
{
_state.EnvelopeDACOn = false;
SetEnabled(false);
}
else
{
_state.EnvelopeDACOn = true;
}
_memory.LowLevelWrite((ushort)register, value);
}
else if (register == _freqLowRegister)
{
ushort newFreqFactor = (ushort)(((_state.HighFreqByte & 0x7) << 8) | value);
SetFrequencyFactor(newFreqFactor);
_memory.LowLevelWrite((ushort)register, value);
}
else if (register == _freqHighRegister)
{
ushort newFreqFactor = (ushort)(((value & 0x7) << 8) | _state.LowFreqByte);
SetFrequencyFactor(newFreqFactor);
bool prevContinuousOutput = _state.ContinuousOutput;
_state.ContinuousOutput = (Utils.UtilFuncs.TestBit(value, 6) == 0);
// Only enabling sound length (disabled -> enabled) could trigger a clock
if ((!_state.ContinuousOutput) &&
(prevContinuousOutput != _state.ContinuousOutput))
{
// If the next frameSequencer WON'T trigger the length period,
// the counter is somehow decremented...
if ((_frameSequencer.Value & 0x01) == 0)
{
ClockLengthCounter();
}
}
// Bit 7 is called a channel INIT. On this event the following occurs:
// * The Volume Envelope values value are changed
bool init = (Utils.UtilFuncs.TestBit(value, 7) != 0);
// INIT triggers only if the DAC (volume) is on
if (init)
{
if(_state.EnvelopeDACOn)
{
SetEnabled(true);
}
// FREQUENCY SWEEP
_state.SweepFrequencyRegister = _state.FrequencyFactor;
_state.SweepCounter = _state.SweepLength;
if (_state.SweepLength == 0) { _state.SweepCounter = 8; }
_state.SweepEnabled = ((_state.SweepLength > 0) || (_state.SweepShifts > 0));
// We create immediate frequency calculation
if (_state.SweepShifts > 0)
{
CalculateSweepChange(updateValue: false, redoCalculation: false);
_state.SweepCalcOcurred = true;
}
// NOTE(Cristian): If the length counter is empty at INIT,
// it's reloaded with full length
if(_state.SoundLengthCounter < 0)
{
_state.SoundLengthCounter = 0x3F;
// If INIT on an zerioed empty enabled length channel
// AND the next frameSequencer tick WON'T tick the length period
// The lenght counter is somehow decremented
if (!_state.ContinuousOutput &&
((_frameSequencer.Value & 0x01) == 0))
{
ClockLengthCounter();
}
}
// Envelope is reloaded
_state.EnvelopeTickCounter = _state.EnvelopeTicks;
_state.EnvelopeCurrentUp = _state.EnvelopeUp;
SetEnvelopeCurrentValue(_state.EnvelopeDefaultValue);
}
// Bits 3-5 are always 1
_memory.LowLevelWrite((ushort)register, (byte)(value | 0x38));
}
else if (register == MMR.NR52)
{
SetEnabled((Utils.UtilFuncs.TestBit(value, _channelIndex) != 0));
}
#if SoundTiming
//Timeline[TimelineCount++] = before;
//Timeline[TimelineCount++] = _memory.LowLevelRead((ushort)register);
#endif
}
public void HandleMemoryChange(MMR register, byte value)
{
switch (register)
{
case MMR.NR41: // Sound Length
_state.SoundLengthCounter = 0x3F - (value & 0x3F);
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR42:
_state.EnvelopeTicks = value & 0x07;
_state.EnvelopeUp = (value & 0x8) != 0;
_state.EnvelopeDefaultValue = value >> 4;
// Putting volume 0 disables the channel
if ((_state.EnvelopeDefaultValue == 0) && !_state.EnvelopeUp)
{
_state.EnvelopeDACOn = false;
SetEnabled(false);
}
else
{
_state.EnvelopeDACOn = true;
}
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR43:
AddSoundEvent(NoiseChannelEvents.NR43_WRITE, value);
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR44:
bool prevContinuousOutput = _state.ContinuousOutput;
_state.ContinuousOutput = (Utils.UtilFuncs.TestBit(value, 6) == 0);
// Only enabling sound length (disabled -> enabled) could trigger a clock
if ((!_state.ContinuousOutput) &&
(prevContinuousOutput != _state.ContinuousOutput))
{
// If the next frameSequencer WON'T trigger the length period,
// the counter is somehow decremented...
if ((_frameSequencer.Value & 0x01) == 0)
{
ClockLengthCounter();
}
}
bool init = (Utils.UtilFuncs.TestBit(value, 7) != 0);
if (init)
{
AddSoundEvent(NoiseChannelEvents.INIT, 0);
if (_state.EnvelopeDACOn)
{
SetEnabled(true);
}
// NOTE(Cristian): If the length counter is empty at INIT,
// it's reloaded with full length
if (_state.SoundLengthCounter < 0)
{
_state.SoundLengthCounter = 0x3F;
// If INIT on an zerioed empty enabled length channel
// AND the next frameSequencer tick WON'T tick the length period
// The lenght counter is somehow decremented
if (!_state.ContinuousOutput &&
((_frameSequencer.Value & 0x01) == 0))
{
ClockLengthCounter();
}
}
// Envelope is reloaded
_state.EnvelopeTickCounter = _state.EnvelopeTicks;
_state.EnvelopeCurrentUp = _state.EnvelopeUp;
SetEnvelopeCurrentValue(_state.EnvelopeDefaultValue);
}
_memory.LowLevelWrite((ushort)register, value);
break;
}
}
public MemoryMappedRegisterViewModel(string name, MMR register, IGameBoy gameBoy)
{
_name = name;
_register = register;
_gameBoy = gameBoy;
}
public MemoryMappedRegisterViewModel(string name, MMR register, IGameBoy gameBoy)
{
_name = name;
_register = register;
_gameBoy = gameBoy;
}
internal static void SetupSpritePalletes(DisplayDefinition disDef, Memory memory, MMR pallete)
{
if (pallete == MMR.OBP0)
{
byte obp0 = memory.LowLevelRead((ushort)MMR.OBP0);
disDef.SpritePallete0[0] = 0x00000000; // Sprite colors are trasparent
for (int color = 1; color < 4; ++color)
{
int down = (obp0 >> (2 * color)) & 1;
int up = (obp0 >> (2 * color + 1)) & 1;
int index = (up << 1) | down;
disDef.SpritePallete0[color] = disDef.SpriteColors[index];
}
}
else if (pallete == MMR.OBP1)
{
byte obp1 = memory.LowLevelRead((ushort)MMR.OBP1);
disDef.SpritePallete1[1] = 0x00000000; // Sprite colors are trasparent
for (int color = 1; color < 4; ++color)
{
int down = (obp1 >> (2 * color)) & 1;
int up = (obp1 >> (2 * color + 1)) & 1;
int index = (up << 1) | down;
disDef.SpritePallete1[color] = disDef.SpriteColors[index];
}
}
else
{
throw new InvalidProgramException("Invalid pallete register given");
}
}
public void HandleMemoryChange(MMR register, byte value)
{
switch (register)
{
case MMR.NR41: // Sound Length
_state.SoundLengthCounter = 0x3F - (value & 0x3F);
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR42:
_state.EnvelopeTicks = value & 0x07;
_state.EnvelopeUp = (value & 0x8) != 0;
_state.EnvelopeDefaultValue = value >> 4;
// Putting volume 0 disables the channel
if ((_state.EnvelopeDefaultValue == 0) && !_state.EnvelopeUp)
{
_state.EnvelopeDACOn = false;
SetEnabled(false);
}
else
{
_state.EnvelopeDACOn = true;
}
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR43:
AddSoundEvent(NoiseChannelEvents.NR43_WRITE, value);
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR44:
bool prevContinuousOutput = _state.ContinuousOutput;
_state.ContinuousOutput = (Utils.UtilFuncs.TestBit(value, 6) == 0);
// Only enabling sound length (disabled -> enabled) could trigger a clock
if ((!_state.ContinuousOutput) &&
(prevContinuousOutput != _state.ContinuousOutput))
{
// If the next frameSequencer WON'T trigger the length period,
// the counter is somehow decremented...
if ((_frameSequencer.Value & 0x01) == 0)
{
ClockLengthCounter();
}
}
bool init = (Utils.UtilFuncs.TestBit(value, 7) != 0);
if (init)
{
AddSoundEvent(NoiseChannelEvents.INIT, 0);
if(_state.EnvelopeDACOn)
{
SetEnabled(true);
}
// NOTE(Cristian): If the length counter is empty at INIT,
// it's reloaded with full length
if(_state.SoundLengthCounter < 0)
{
_state.SoundLengthCounter = 0x3F;
// If INIT on an zerioed empty enabled length channel
// AND the next frameSequencer tick WON'T tick the length period
// The lenght counter is somehow decremented
if (!_state.ContinuousOutput &&
((_frameSequencer.Value & 0x01) == 0))
{
ClockLengthCounter();
}
}
// Envelope is reloaded
_state.EnvelopeTickCounter = _state.EnvelopeTicks;
_state.EnvelopeCurrentUp = _state.EnvelopeUp;
SetEnvelopeCurrentValue(_state.EnvelopeDefaultValue);
}
_memory.LowLevelWrite((ushort)register, value);
break;
}
}
internal void HandleMemoryChange(MMR register, byte value)
{
switch (register)
{
case MMR.TIMA:
_state.TimaCounter = value;
this._memory.LowLevelWrite((ushort)MMR.TIMA, value);
break;
case MMR.TMA:
_state.TmaValue = value;
this._memory.LowLevelWrite((ushort)MMR.TMA, value);
break;
case MMR.TAC:
// Clock select is the bits 0 and 1 of the TAC register
byte clockSelect = (byte)(value & 0x03);
switch (clockSelect)
{
case 1:
_state.TacMask = 0x000F; // f/2^4 0000 0000 0000 1111, (262144 Hz)
break;
case 2:
_state.TacMask = 0x003F; // f/2^6 0000 0000 0011 1111, (65536 Hz)
break;
case 3:
_state.TacMask = 0x00FF; // f/2^8 0000 0000 1111 1111, (16384 Hz)
break;
default:
_state.TacMask = 0x03FF; // f/2^10 0000 0011 1111 1111, (4096 Hz)
break;
}
// We restart the counter
_state.TacCounter = 0;
// TAC has a 0xF8 mask (only lower 3 bits are useful)
this._memory.LowLevelWrite((ushort)MMR.TAC, (byte)(0xF8 | value));
break;
}
}
public void HandleMemoryChange(MMR register, byte value)
{
switch(register)
{
case MMR.NR30: // Sound on/off
// Last bit determines sound on/off
_state.ChannelDACOn = (Utils.UtilFuncs.TestBit(value, 7) != 0);
// When DAC re-enabled, the channel doesn't enables itself
if (!_state.ChannelDACOn)
{
SetEnabled(false);
}
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR31: // Sound Length
_state.SoundLengthCounter = 0xFF - value;
//_memory.LowLevelWrite((ushort)register, 0xFF);
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR32: // Output Level (volume)
// Basically, we shift by this amount.
// If the amount is 0, it means we mute
SetVolumeRightShift(((value >> 5) & 0x3) - 1);
// We reload the sample
//_outputValue = (short)Volume;
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR33: // FrequencyFactor lower
{
ushort newFreqFactor = (ushort)(((_state.HighFreqByte & 0x7) << 8) | value);
SetFrequencyFactor(newFreqFactor);
_memory.LowLevelWrite((ushort)register, value);
break;
}
case MMR.NR34: // FrequencyFactor higher
{
ushort newFreqFactor = (ushort)(((value & 0x7) << 8) | _state.LowFreqByte);
SetFrequencyFactor(newFreqFactor);
bool prevContinuousOutput = _state.ContinuousOutput;
_state.ContinuousOutput = (Utils.UtilFuncs.TestBit(value, 6) == 0);
// Only enabling sound length (disabled -> enabled) could trigger a clock
if ((!_state.ContinuousOutput) &&
(prevContinuousOutput != _state.ContinuousOutput))
{
// If the next frameSequencer WON'T trigger the length period,
// the counter is somehow decremented...
if ((_frameSequencer.Value & 0x01) == 0)
{
ClockLengthCounter();
}
}
bool init = (Utils.UtilFuncs.TestBit(value, 7) != 0);
if (init)
{
AddSoundEvent(WaveChannelEvents.INIT, value);
_state.TickCounter = _state.TickThreshold;
_state.CurrentSampleIndex = 0;
// NOTE(Cristian): If the length counter is empty at INIT,
// it's reloaded with full length
if (_state.SoundLengthCounter < 0)
{
_state.SoundLengthCounter = 0xFF;
// If INIT on an zerioed empty enabled length channel
// AND the next frameSequencer tick WON'T tick the length period
// The lenght counter is somehow decremented
if (!_state.ContinuousOutput &&
((_frameSequencer.Value & 0x01) == 0))
{
ClockLengthCounter();
}
}
if (_state.ChannelDACOn)
{
SetEnabled(true);
}
}
_memory.LowLevelWrite((ushort)register, value);
break;
}
}
}
public void HandleMemoryChange(MMR register, byte value)
{
byte before = _memory.LowLevelRead((ushort)register);
#if SoundTiming
//Timeline[TimelineCount++] = (long)register;
//Timeline[TimelineCount++] = value;
#endif
if (register == _sweepRegister)
{
// Sweep Shift Number (Bits 0-2)
_state.SweepShifts = value & 0x07;
// Sweep Direction (Bit 3)
bool prevSweepUp = _state.SweepUp;
_state.SweepUp = ((value & 0x08) == 0);
// Going from neg->pos after a calc has occurred disabled the channel
if (_state.SweepCalcOcurred && !prevSweepUp && _state.SweepUp)
{
SetEnabled(false);
}
_state.SweepCalcOcurred = false;
// Sweep Time (Bits 4-6)
_state.SweepLength = ((value >> 4) & 0x07);
// Bit 7 is always 1
_memory.LowLevelWrite((ushort)register, (byte)(value | 0x80));
}
else if (register == _wavePatternDutyRegister)
{
// TODO(Cristian): Wave Pattern Duty
_state.SoundLengthCounter = 0x3F - (value & 0x3F);
_memory.LowLevelWrite((ushort)register, value);
}
else if (register == _volumeEnvelopeRegister)
{
_state.EnvelopeTicks = value & 0x7;
_state.EnvelopeUp = (value & 0x8) != 0;
_state.EnvelopeDefaultValue = value >> 4;
// Putting volume 0 disables the channel
if ((_state.EnvelopeDefaultValue == 0) && !_state.EnvelopeUp)
{
_state.EnvelopeDACOn = false;
SetEnabled(false);
}
else
{
_state.EnvelopeDACOn = true;
}
_memory.LowLevelWrite((ushort)register, value);
}
else if (register == _freqLowRegister)
{
ushort newFreqFactor = (ushort)(((_state.HighFreqByte & 0x7) << 8) | value);
SetFrequencyFactor(newFreqFactor);
_memory.LowLevelWrite((ushort)register, value);
}
else if (register == _freqHighRegister)
{
ushort newFreqFactor = (ushort)(((value & 0x7) << 8) | _state.LowFreqByte);
SetFrequencyFactor(newFreqFactor);
bool prevContinuousOutput = _state.ContinuousOutput;
_state.ContinuousOutput = (Utils.UtilFuncs.TestBit(value, 6) == 0);
// Only enabling sound length (disabled -> enabled) could trigger a clock
if ((!_state.ContinuousOutput) &&
(prevContinuousOutput != _state.ContinuousOutput))
{
// If the next frameSequencer WON'T trigger the length period,
// the counter is somehow decremented...
if ((_frameSequencer.Value & 0x01) == 0)
{
ClockLengthCounter();
}
}
// Bit 7 is called a channel INIT. On this event the following occurs:
// * The Volume Envelope values value are changed
bool init = (Utils.UtilFuncs.TestBit(value, 7) != 0);
// INIT triggers only if the DAC (volume) is on
if (init)
{
if (_state.EnvelopeDACOn)
{
SetEnabled(true);
}
// FREQUENCY SWEEP
_state.SweepFrequencyRegister = _state.FrequencyFactor;
_state.SweepCounter = _state.SweepLength;
if (_state.SweepLength == 0)
{
_state.SweepCounter = 8;
}
_state.SweepEnabled = ((_state.SweepLength > 0) || (_state.SweepShifts > 0));
// We create immediate frequency calculation
if (_state.SweepShifts > 0)
{
CalculateSweepChange(updateValue: false, redoCalculation: false);
_state.SweepCalcOcurred = true;
}
// NOTE(Cristian): If the length counter is empty at INIT,
// it's reloaded with full length
if (_state.SoundLengthCounter < 0)
{
_state.SoundLengthCounter = 0x3F;
// If INIT on an zerioed empty enabled length channel
// AND the next frameSequencer tick WON'T tick the length period
// The lenght counter is somehow decremented
if (!_state.ContinuousOutput &&
((_frameSequencer.Value & 0x01) == 0))
{
ClockLengthCounter();
}
}
// Envelope is reloaded
_state.EnvelopeTickCounter = _state.EnvelopeTicks;
_state.EnvelopeCurrentUp = _state.EnvelopeUp;
SetEnvelopeCurrentValue(_state.EnvelopeDefaultValue);
}
// Bits 3-5 are always 1
_memory.LowLevelWrite((ushort)register, (byte)(value | 0x38));
}
else if (register == MMR.NR52)
{
SetEnabled((Utils.UtilFuncs.TestBit(value, _channelIndex) != 0));
}
#if SoundTiming
//Timeline[TimelineCount++] = before;
//Timeline[TimelineCount++] = _memory.LowLevelRead((ushort)register);
#endif
}
public void HandleMemoryChange(MMR register, byte value)
{
switch (register)
{
case MMR.NR30: // Sound on/off
// Last bit determines sound on/off
_state.ChannelDACOn = (Utils.UtilFuncs.TestBit(value, 7) != 0);
// When DAC re-enabled, the channel doesn't enables itself
if (!_state.ChannelDACOn)
{
SetEnabled(false);
}
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR31: // Sound Length
_state.SoundLengthCounter = 0xFF - value;
//_memory.LowLevelWrite((ushort)register, 0xFF);
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR32: // Output Level (volume)
// Basically, we shift by this amount.
// If the amount is 0, it means we mute
SetVolumeRightShift(((value >> 5) & 0x3) - 1);
// We reload the sample
//_outputValue = (short)Volume;
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR33: // FrequencyFactor lower
{
ushort newFreqFactor = (ushort)(((_state.HighFreqByte & 0x7) << 8) | value);
SetFrequencyFactor(newFreqFactor);
_memory.LowLevelWrite((ushort)register, value);
break;
}
case MMR.NR34: // FrequencyFactor higher
{
ushort newFreqFactor = (ushort)(((value & 0x7) << 8) | _state.LowFreqByte);
SetFrequencyFactor(newFreqFactor);
bool prevContinuousOutput = _state.ContinuousOutput;
_state.ContinuousOutput = (Utils.UtilFuncs.TestBit(value, 6) == 0);
// Only enabling sound length (disabled -> enabled) could trigger a clock
if ((!_state.ContinuousOutput) &&
(prevContinuousOutput != _state.ContinuousOutput))
{
// If the next frameSequencer WON'T trigger the length period,
// the counter is somehow decremented...
if ((_frameSequencer.Value & 0x01) == 0)
{
ClockLengthCounter();
}
}
bool init = (Utils.UtilFuncs.TestBit(value, 7) != 0);
if (init)
{
AddSoundEvent(WaveChannelEvents.INIT, value);
_state.TickCounter = _state.TickThreshold;
_state.CurrentSampleIndex = 0;
// NOTE(Cristian): If the length counter is empty at INIT,
// it's reloaded with full length
if (_state.SoundLengthCounter < 0)
{
_state.SoundLengthCounter = 0xFF;
// If INIT on an zerioed empty enabled length channel
// AND the next frameSequencer tick WON'T tick the length period
// The lenght counter is somehow decremented
if (!_state.ContinuousOutput &&
((_frameSequencer.Value & 0x01) == 0))
{
ClockLengthCounter();
}
}
if (_state.ChannelDACOn)
{
SetEnabled(true);
}
}
_memory.LowLevelWrite((ushort)register, value);
break;
}
}
}
internal void HandleMemoryChange(MMR register, byte value, bool updatedEnabledFlag = true)
{
if (!_state.Enabled)
{
// When powered off, the internal length can be changed (DMG only)
switch (register)
{
case MMR.NR11:
_channel1.ChangeLength(value);
break;
case MMR.NR21:
_channel2.ChangeLength(value);
break;
case MMR.NR31:
_channel3.ChangeLength(value);
break;
case MMR.NR41:
_channel4.ChangeLength(value);
break;
}
// Other than turning on, all other writes are ignored
if (register != MMR.NR52)
{
return;
}
}
// We store previous channel status
bool channel1Enabled = _channel1.Enabled;
bool channel2Enabled = _channel2.Enabled;
bool channel3Enabled = _channel3.Enabled;
bool channel4Enabled = _channel4.Enabled;
bool prevEnabled = _state.Enabled;
switch (register)
{
case MMR.NR10:
case MMR.NR11:
case MMR.NR12:
case MMR.NR13:
case MMR.NR14:
_channel1.HandleMemoryChange(register, value);
break;
case MMR.NR21:
case MMR.NR22:
case MMR.NR23:
case MMR.NR24:
_channel2.HandleMemoryChange(register, value);
break;
case MMR.NR30:
case MMR.NR31:
case MMR.NR32:
case MMR.NR33:
case MMR.NR34:
_channel3.HandleMemoryChange(register, value);
break;
case MMR.NR41:
case MMR.NR42:
case MMR.NR43:
case MMR.NR44:
_channel4.HandleMemoryChange(register, value);
break;
case MMR.NR50:
// NOTE(Cristian): No Vin support
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR51:
// TODO(Cristian): Implement this logic
_state.OutputChannel1Left = ((value & 0x01) != 0);
_state.OutputChannel2Left = ((value & 0x02) != 0);
_state.OutputChannel3Left = ((value & 0x04) != 0);
_state.OutputChannel4Left = ((value & 0x08) != 0);
_state.OutputChannel1Right = ((value & 0x10) != 0);
_state.OutputChannel2Right = ((value & 0x20) != 0);
_state.OutputChannel3Right = ((value & 0x40) != 0);
_state.OutputChannel4Right = ((value & 0x80) != 0);
_memory.LowLevelWrite((ushort)register, value);
break;
case MMR.NR52:
bool apuEnabled = (Utils.UtilFuncs.TestBit(value, 7) != 0);
if (!apuEnabled)
{
// Powering down the APU should power down all the registers
//for (ushort r = (ushort)MMR.NR10; r < (ushort)MMR.NR52; ++r)
//{
// HandleMemoryChange((MMR)r, 0, false);
//}
_channel1.PowerOff();
_channel1.SetEnabled(false);
_channel2.PowerOff();
_channel2.SetEnabled(false);
_channel3.PowerOff();
_channel3.SetEnabled(false);
_channel4.PowerOff();
_channel4.SetEnabled(false);
_memory.LowLevelWrite((ushort)MMR.NR50, 0);
_memory.LowLevelWrite((ushort)MMR.NR51, 0);
}
else if (!_state.Enabled)
{
_frameSequencer.Reset();
}
// We update at the end because otherwise the recursive calls would
// be rejected by the guard
_state.Enabled = apuEnabled;
break;
}
// NOTE(Cristian): This is an "optimization" for when NR52 is disabled,
// All the registers are set to 0. A normal recursive call
// would write the NR52 memory several times unnecessarily
if (!updatedEnabledFlag)
{
return;
}
// We compare to see if we have to change the NR52 byte
if ((channel1Enabled != _channel1.Enabled) ||
(channel2Enabled != _channel2.Enabled) ||
(channel3Enabled != _channel3.Enabled) ||
(channel4Enabled != _channel4.Enabled) ||
(prevEnabled != _state.Enabled))
{
byte nr52 = 0x70;
if (_state.Enabled)
{
nr52 = (byte)((_channel1.Enabled ? 0x1 : 0) | // bit 0
(_channel2.Enabled ? 0x2 : 0) | // bit 1
(_channel3.Enabled ? 0x4 : 0) | // bit 2
(_channel4.Enabled ? 0x8 : 0) | // bit 3
0xF0); // bit 4-7 are 1
}
// We know bit 7 is 1 because otherwise the whole register is 0x70
_memory.LowLevelWrite((ushort)MMR.NR52, nr52);
}
}
internal void HandleMemoryChange(MMR mappedRegister, byte value)
{
switch (mappedRegister)
{
case MMR.LCDC:
// We set all the LCDC bits
for (int i = 0; i < 8; ++i)
{
_state.LCDCBits[i] = (value & (1 << i)) != 0;
}
break;
case MMR.STAT:
_state.STAT = value;
break;
case MMR.SCY:
_state.SCY = value;
break;
case MMR.SCX:
_state.SCX = value;
break;
case MMR.LY:
_state.CurrentLine = 0;
break;
case MMR.LYC:
_state.LYC = value;
break;
case MMR.DMA:
LoadSprites();
break;
case MMR.BGP:
DisFuncs.SetupTilePallete(_disDef, _memory);
break;
case MMR.OBP0:
DisFuncs.SetupSpritePalletes(_disDef, _memory, MMR.OBP0);
break;
case MMR.OBP1:
DisFuncs.SetupSpritePalletes(_disDef, _memory, MMR.OBP1);
break;
case MMR.WY:
_state.WY = value;
break;
case MMR.WX:
_state.WX = value;
break;
default:
throw new InvalidProgramException("All cases should be handled...");
}
}
