public Emulator(TVSystem tvFormat)
{
this.TVFormat = tvFormat;
this.InitializeComponents(
out this.ppu,
out this.interrupts,
out this.memory,
out this.dma,
out this.apu,
out this.cpu,
out this.input,
out this.legacyNesEmu);
this.input.InitializeInput();
this.emulationState =
new EmulationState(
this,
this.ppu,
this.interrupts,
this.memory,
this.dma,
this.apu,
this.cpu,
this.input,
this.ppu.videoOut);
switch (TVFormat)
{
case TVSystem.NTSC:
this.apu.SystemIndex = 0;
this.apu.audio_playback_samplePeriod = 1789772.67f;
break;
case TVSystem.PALB:
this.apu.SystemIndex = 1;
this.apu.audio_playback_samplePeriod = 1662607f;
break;
case TVSystem.DENDY:
this.apu.SystemIndex = 2;
this.apu.audio_playback_samplePeriod = 1773448f;
break;
}
if (TVFormat == TVSystem.NTSC)
{
FramePeriod = (1.0 / (FPS = 60.0));
}
else //PALB, DENDY
{
FramePeriod = (1.0 / (FPS = 50.0));
}
}
private string TVSystemToPreset(TVSystem tvsystem)
{
if (tvsystem == TVSystem.PAL)
{
return(Preset.Video.DVD.PAL_4x3_MP2);
}
else
{
return(Preset.Video.DVD.NTSC_4x3_PCM);
}
}
private static void hardReset()
{
switch (TVFormatSetting)
{
case TVSystemSetting.AUTO:
{
if (board.GameInfo.Cartridges != null)
{
if (board.GameCartInfo.System.ToUpper().Contains("PAL"))
{
TVFormat = TVSystem.PALB;
}
else if (board.GameCartInfo.System.ToUpper().Contains("DENDY"))
{
TVFormat = TVSystem.DENDY;
}
else
{
TVFormat = TVSystem.NTSC;
}
}
else
{
TVFormat = TVSystem.NTSC; // force NTSC
}
break;
}
case TVSystemSetting.NTSC: { TVFormat = TVSystem.NTSC; break; }
case TVSystemSetting.PALB: { TVFormat = TVSystem.PALB; break; }
case TVSystemSetting.DENDY: { TVFormat = TVSystem.DENDY; break; }
}
DoPalAdditionalClock = TVFormat == TVSystem.PALB;
palCyc = 0;
setupSpeedLimiter();
MEMHardReset();
CPUHardReset();
PPUHardReset();
APUHardReset();
DMAHardReset();
}
public void VideoFormatTest(byte videoFmtByte, AspectRatio expectedAspectRatio, TVSystem expectedTVSystem)
{
byte[] copyTestBytes = (byte[])testBytes.Clone();
copyTestBytes[0x80] = videoFmtByte;
MOIFile moiFile = ParseMOIExpectSuccess(copyTestBytes);
Assert.AreEqual(expectedAspectRatio, moiFile.AspectRatio);
Assert.AreEqual(expectedTVSystem, moiFile.TVSystem);
}
private void HardReset()
{
switch (TVFormatSetting)
{
case TVSystemSetting.AUTO:
{
if (this.memory.board.GameInfo.Cartridges != null)
{
if (this.memory.board.GameCartInfo.System.ToUpper().Contains("PAL"))
{
TVFormat = TVSystem.PALB;
}
else if (this.memory.board.GameCartInfo.System.ToUpper().Contains("DENDY"))
{
TVFormat = TVSystem.DENDY;
}
else
{
TVFormat = TVSystem.NTSC;
}
}
else
{
TVFormat = TVSystem.NTSC; // force NTSC
}
break;
}
case TVSystemSetting.NTSC:
{
TVFormat = TVSystem.NTSC;
break;
}
case TVSystemSetting.PALB:
{
TVFormat = TVSystem.PALB;
break;
}
case TVSystemSetting.DENDY:
{
TVFormat = TVSystem.DENDY;
break;
}
}
DoPalAdditionalClock = TVFormat == TVSystem.PALB;
palCyc = 0;
// SPEED LIMITTER
SpeedLimitterON = true;
// NOTE !!
// These values are calculated depending on cpu speed
// provided by Nes Wiki.
// NTSC = 1789772.67 Hz
// PALB = 1662607 Hz
// DENDY = 1773448 Hz
if (TVFormat == TVSystem.NTSC)
{
FramePeriod = (1.0 / (FPS = 61.58)); // Yes not 60.0988 for 1789772.67 Hz
}
else if (TVFormat == TVSystem.PALB)
{
FramePeriod = (1.0 / (FPS = 51.33)); // Not 50.070 for 1662607 Hz
}
else if (TVFormat == TVSystem.DENDY)
{
FramePeriod = (1.0 / (FPS = 51.25)); // Not 50.070 for 1773448 Hz
}
// Changing any value of FPS or CPU FREQ will slightly affect
// sound playback sync and the sound itself for high frequencies.
//
// For example, if we put NTSC = 1789772 Hz instead of 1789772.67 Hz
// and the FPS = 60.0988 as provided in wiki, the sound record (record
// by adding sample sample on nes cpu clock, **not via playback on run
// time**) show bad sample on high freq generated by square 1 and 2.
// The best game to test this is Rygar at the first stage music.
// Silence all channels but the square 2, record the sound and see the choppy.
//
// The question is: is there something wrong I did or the
// Nes Wiki infromation is not accurate ?
// I'm sure all sound channels implemented exactly as it should by Wiki
// and APU passes all tests.
// Anyway, it sounds good using these values :)
this.memory.MEMHardReset();
this.cpu.HardReset();
this.ppu.PPUHardReset();
this.apu.HardReset();
this.dma.DMAHardReset();
}
private static void hardReset()
{
switch (TVFormatSetting)
{
case TVSystemSetting.AUTO:
{
if (board.GameInfo.Cartridges != null)
{
if (board.GameCartInfo.System.ToUpper().Contains("PAL"))
TVFormat = TVSystem.PALB;
else if (board.GameCartInfo.System.ToUpper().Contains("DENDY"))
TVFormat = TVSystem.DENDY;
else
TVFormat = TVSystem.NTSC;
}
else
{
TVFormat = TVSystem.NTSC;// force NTSC
}
break;
}
case TVSystemSetting.NTSC: { TVFormat = TVSystem.NTSC; break; }
case TVSystemSetting.PALB: { TVFormat = TVSystem.PALB; break; }
case TVSystemSetting.DENDY: { TVFormat = TVSystem.DENDY; break; }
}
DoPalAdditionalClock = TVFormat == TVSystem.PALB;
palCyc = 0;
setupSpeedLimiter();
MEMHardReset();
CPUHardReset();
PPUHardReset();
APUHardReset();
DMAHardReset();
}
public SDLVideo(TVSystem system)
{
LoadSettings();
initialized = false;
canRender = false;
Console.WriteLine("->Initializing video ...");
fontPath = System.IO.Path.Combine(Program.ApplicationFolder, "FreeSans.ttf");
// Initialize the video
Video.Initialize();
Video.WindowIcon();
Video.WindowCaption = "My Nes SDL";
fullscreenModes = Video.ListModes();
Video.GLDoubleBufferEnabled = !ImmediateMode;
windowW = 256 * stretchMultiply;
switch (system)
{
case TVSystem.NTSC:
{
Events.TargetFps = 60;
break;
}
case TVSystem.PALB:
case TVSystem.DENDY:
{
Events.TargetFps = 50;
break;
}
}
if (cutLines)
{
if (system == TVSystem.NTSC)
{
scanlines = 224;
firstToCut = 8;
}
else
{
scanlines = 238;
firstToCut = 1;
}
}
else
{
scanlines = 240;
firstToCut = 0;
}
screenBufferSize = 256 * scanlines;
originalRect = new Rectangle(0, 0, 256, scanlines);
screen_back = new Surface(256, scanlines, 32);
windowH = scanlines * stretchMultiply;
pointer = screen_back.Pixels;
screen_pointer = (int*)screen_back.Pixels;
NesEmu.SetupVideoRenderer(this, true, screen_back.Pixels, firstToCut * 256, 256 * (240 - firstToCut));
// Create texts
Console.WriteLine("-->Loading fonts ...");
fpsTextSprite = new TextSprite(new SdlDotNet.Graphics.Font(fontPath, 15));
fpsTextSprite.Color = Color.White;
fpsTextSprite.BackgroundColor = Color.Black;
notTextSprite = new TextSprite(new SdlDotNet.Graphics.Font(fontPath, 15));
notTextSprite.BackgroundColor = Color.Black;
soundRecordTextSprite = new TextSprite(new SdlDotNet.Graphics.Font(fontPath, 15));
soundRecordTextSprite.BackgroundColor = Color.Black;
statusTextSprite = new TextSprite(new SdlDotNet.Graphics.Font(fontPath, 15));
statusTextSprite.BackgroundColor = Color.Black;
// set video mode.
Resize(FullScreen, true, windowW, windowH);
Events.VideoResize += VideoResize;
Events.MouseButtonDown += Events_MouseButtonDown;
Events.MouseButtonUp += Events_MouseButtonUp;
Events.Tick += OnTick;
canRender = true;
initialized = true;
Console.WriteLine("->Video initialized successfully");
}
public SDLVideo(TVSystem system)
{
LoadSettings();
initialized = false;
canRender = false;
Console.WriteLine("->Initializing video ...");
fontPath = System.IO.Path.Combine(Program.ApplicationFolder, "FreeSans.ttf");
// Initialize the video
Video.Initialize();
Video.WindowIcon();
Video.WindowCaption = "My Nes SDL";
fullscreenModes = Video.ListModes();
Video.GLDoubleBufferEnabled = !ImmediateMode;
windowW = 256 * stretchMultiply;
switch (system)
{
case TVSystem.NTSC:
{
Events.TargetFps = 60;
break;
}
case TVSystem.PALB:
case TVSystem.DENDY:
{
Events.TargetFps = 50;
break;
}
}
if (cutLines)
{
if (system == TVSystem.NTSC)
{
scanlines = 224;
firstToCut = 8;
}
else
{
scanlines = 238;
firstToCut = 1;
}
}
else
{
scanlines = 240;
firstToCut = 0;
}
screenBufferSize = 256 * scanlines;
originalRect = new Rectangle(0, 0, 256, scanlines);
screen_back = new Surface(256, scanlines, 32);
windowH = scanlines * stretchMultiply;
pointer = screen_back.Pixels;
screen_pointer = (int *)screen_back.Pixels;
NesEmu.SetupVideoRenderer(this, true, screen_back.Pixels, firstToCut * 256, 256 * (240 - firstToCut));
// Create texts
Console.WriteLine("-->Loading fonts ...");
fpsTextSprite = new TextSprite(new SdlDotNet.Graphics.Font(fontPath, 15));
fpsTextSprite.Color = Color.White;
fpsTextSprite.BackgroundColor = Color.Black;
notTextSprite = new TextSprite(new SdlDotNet.Graphics.Font(fontPath, 15));
notTextSprite.BackgroundColor = Color.Black;
soundRecordTextSprite = new TextSprite(new SdlDotNet.Graphics.Font(fontPath, 15));
soundRecordTextSprite.BackgroundColor = Color.Black;
statusTextSprite = new TextSprite(new SdlDotNet.Graphics.Font(fontPath, 15));
statusTextSprite.BackgroundColor = Color.Black;
// set video mode.
Resize(FullScreen, true, windowW, windowH);
Events.VideoResize += VideoResize;
Events.MouseButtonDown += Events_MouseButtonDown;
Events.MouseButtonUp += Events_MouseButtonUp;
Events.Tick += OnTick;
canRender = true;
initialized = true;
Console.WriteLine("->Video initialized successfully");
}
