private void EmulateFrame()
{
Stopwatch timer = new Stopwatch();
while (_emulatorRunning)
{
lock (_syncRoot)
{
timer.Restart();
_board.Start();
long elapsed = timer.ElapsedMilliseconds;
if (elapsed > 15)
{
Thread.Sleep(0);
}
while (timer.ElapsedMilliseconds < 20)
{
;
}
}
}
}