public void Run()
{
VCDSignalsSnapshot topLevelSnapshot = new VCDSignalsSnapshot("TOP");
var controlScope = topLevelSnapshot.Scope("Control");
var clockSignal = controlScope.Add(new VCDVariable("Clock", true, 1));
_topLevel.PopulateSnapshot(topLevelSnapshot);
_vcdBuilder?.Init(topLevelSnapshot);
var clock = 0;
var stageIteration = 0;
while (clock < MaxClockCycles && (IsRunning?.Invoke(_topLevel) ?? true))
{
var currentTime = clock * 2 * MaxStageIterations;
clockSignal.Value = true;
stageIteration = 0;
do
{
currentTime++;
var modified = _topLevel.Stage(stageIteration);
_topLevel.PopulateSnapshot(topLevelSnapshot);
_vcdBuilder?.Snapshot(currentTime, topLevelSnapshot);
// no modules were modified during stage iteration, all converged
if (!modified)
{
break;
}
}while (++stageIteration < MaxStageIterations);
if (stageIteration >= MaxStageIterations)
{
throw new MaxStageIterationReachedException();
}
OnPostStage?.Invoke(_topLevel);
currentTime = clock * 2 * MaxStageIterations + MaxStageIterations;
clockSignal.Value = false;
_topLevel.PopulateSnapshot(topLevelSnapshot);
_vcdBuilder?.Snapshot(currentTime, topLevelSnapshot);
_topLevel.Commit();
clock++;
}
}
public virtual void ClockCycle()
{
_simulatorContext.DeltaCycle = 0;
do
{
_simulatorContext.CurrentTime++;
var stageResult = _topLevel.DeltaCycle(_simulatorContext.DeltaCycle);
_simulatorContext.TotalDeltaCycles++;
TraceSignals();
// no modules were modified during stage iteration, all converged
if (stageResult == RTLModuleStageResult.Stable)
{
break;
}
}while (++_simulatorContext.DeltaCycle < _simulatorContext.MaxDeltaCycles);
if (_simulatorContext.DeltaCycle >= _simulatorContext.MaxDeltaCycles)
{
throw new MaxStageIterationReachedException();
}
OnPostStage?.Invoke(_topLevel);
_simulatorContext.CurrentTime = _simulatorContext.Clock * 2 * _simulatorContext.MaxDeltaCycles + _simulatorContext.MaxDeltaCycles;
// clock fall is not handled in RTL module, all sync is done of clock rise at the moment
_simulatorContext.ClockSignal?.SetValue(false);
TraceSignals();
// clock rise will commit all changes
_simulatorContext.Clock++;
_simulatorContext.CurrentTime = _simulatorContext.Clock * 2 * _simulatorContext.MaxDeltaCycles;
_simulatorContext.ClockSignal?.SetValue(true);
_topLevel.Commit();
TraceSignals();
OnPostCommit?.Invoke(_topLevel);
}
public void ClockCycle()
{
_simulatorContext.CurrentTime = _simulatorContext.Clock * 2 * _simulatorContext.MaxStageIterations;
_simulatorContext.ClockSignal?.SetValue(true);
_simulatorContext.Iteration = 0;
do
{
_simulatorContext.CurrentTime++;
var modified = _topLevel.Stage(_simulatorContext.Iteration);
TraceSignals();
// no modules were modified during stage iteration, all converged
if (!modified)
{
break;
}
}while (++_simulatorContext.Iteration < _simulatorContext.MaxStageIterations);
if (_simulatorContext.Iteration >= _simulatorContext.MaxStageIterations)
{
throw new MaxStageIterationReachedException();
}
OnPostStage?.Invoke(_topLevel);
_simulatorContext.CurrentTime = _simulatorContext.Clock * 2 * _simulatorContext.MaxStageIterations + _simulatorContext.MaxStageIterations;
_simulatorContext.ClockSignal?.SetValue(false);
TraceSignals();
_topLevel.Commit();
OnPostCommit?.Invoke(_topLevel);
_simulatorContext.Clock++;
}