private static bool DetectPal(GameInfo game, byte[] rom)
{
// force NTSC mode for the new core we instantiate
var newgame = game.Clone();
if (newgame["PAL"])
{
newgame.RemoveOption("PAL");
}
if (!newgame["NTSC"])
{
newgame.AddOption("NTSC");
}
// give the emu a minimal of input\output connections so it doesn't crash
var comm = new CoreComm(null, null);
using (Atari2600 emu = new Atari2600(new CoreComm(null, null), newgame, rom, null, null))
{
emu.Controller = new NullController();
List <int> framecounts = new List <int>();
emu._tia.FrameEndCallBack = (i) => framecounts.Add(i);
for (int i = 0; i < 71; i++) // run for 71 * 262 lines, since we're in NTSC mode
{
emu.FrameAdvance(false, false);
}
int numpal = framecounts.Count((i) => i > 287);
bool pal = numpal >= 25;
Console.WriteLine("PAL Detection: {0} lines, {1}", numpal, pal);
return(pal);
}
}
private static bool DetectPal(GameInfo game, byte[] rom)
{
// force NTSC mode for the new core we instantiate
var newGame = game.Clone();
if (newGame["PAL"])
{
newGame.RemoveOption("PAL");
}
if (!newGame["NTSC"])
{
newGame.AddOption("NTSC", "");
}
// here we advance past start up irregularities to see how long a frame is based on calls to Vsync
// we run 72 frames, then run 270 scanlines worth of cycles.
// if we don't hit a new frame, we can be pretty confident we are in PAL
using var emu = new Atari2600(newGame, rom, null, null);
for (int i = 0; i < 72; i++)
{
emu.FrameAdvance(NullController.Instance, false, false);
}
for (int i = 0; i < 61560; i++)
{
emu.Cycle();
}
bool pal = !emu._tia.New_Frame;
Console.WriteLine("PAL Detection: {0}", pal);
return(pal);
}
private static bool DetectPal(GameInfo game, byte[] rom)
{
// force NTSC mode for the new core we instantiate
var newgame = game.Clone();
if (newgame["PAL"])
newgame.RemoveOption("PAL");
if (!newgame["NTSC"])
newgame.AddOption("NTSC");
// give the emu a minimal of input\output connections so it doesn't crash
var comm = new CoreComm(null, null);
comm.InputCallback = new InputCallbackSystem();
using (Atari2600 emu = new Atari2600(new CoreComm(null, null), newgame, rom, null, null))
{
emu.Controller = new NullController();
List<int> framecounts = new List<int>();
emu._tia.FrameEndCallBack = (i) => framecounts.Add(i);
for (int i = 0; i < 71; i++) // run for 71 * 262 lines, since we're in NTSC mode
emu.FrameAdvance(false, false);
int numpal = framecounts.Count((i) => i > 287);
bool pal = numpal >= 25;
Console.WriteLine("PAL Detection: {0} lines, {1}", numpal, pal);
return pal;
}
}
