/// <summary>
/// Output value of the device for the given cycle
/// </summary>
/// <param name="bankID">BankID of the device</param>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
public static LabeledValue <long?> OutputCalc(Bank bankID, int cycle)
{
var label = "Out:";
// ram
var field = bankID == Bank.Bank_A ? "DAram" : "DBram";
var ram = DFBState.GetCySimulatorPrivateField <long[]>(cycle, field);
// address
field = bankID == Bank.Bank_A ? "Aaddrnext" : "Baddrnext";
var address = DFBState.GetCySimulatorPrivateField <int?>(cycle, field);
// ramVal / output
if (address != null &&
address.HasValue &&
ram != null)
{
var r = new LabeledValue <long?>(label);
r.Value = (int?)ram[address.Value];
r.FormattedValue = r.Value.HasValue ? FormatValue(VALUE_WIDTH, r.Value) : "";
return(r);
}
else
{
return(NullLabeledValue <long?>(label));
}
}
/// <summary>
/// Output value of the device for the given cycle
/// </summary>
/// <param name="bankID">BankID of the device</param>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
public static LabeledValue <long?> OutputCalc(Bank bankID, int cycle)
{
var label = "Out:";
var busWritten = BusWritten(cycle);
if (busWritten == null)
{
return(NullLabeledValue <long?>(label));
}
if (bankID == Bank.Bank_A && busWritten.Equals("A") ||
bankID == Bank.Bank_B && busWritten.Equals("B"))
{
// Value
var shift = DFBState.GetCySimulatorPrivateField <long>(cycle, "shift");
var r = new LabeledValue <long?>("Out:");
r.Value = shift;
r.FormattedValue = r.Value.HasValue ? FormatValue(VALUE_WIDTH, (int)r.Value) : "";
return(r);
}
else
{
return(NullLabeledValue <long?>(label));
}
}
/// <summary>
/// Output value of the device for the given cycle
/// </summary>
/// <param name="bankID">BankID of the device</param>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
public static LabeledValue <long?> OutputCalc(Bank bankID, int cycle)
{
var label = "Out:";
int?val = null;
bool busRead_A;
bool busRead_B;
BusRead(cycle,
out busRead_A,
out busRead_B);
if (bankID == Bank.Bank_A && !busRead_A)
{
return(NullLabeledValue <long?>(label));
}
else if (bankID == Bank.Bank_B && !busRead_B)
{
return(NullLabeledValue <long?>(label));
}
val = DFBState.GetCySimulatorPrivateField <int?>(cycle, "p3bus");
if (val == null || !val.HasValue)
{
return(NullLabeledValue <long?>(label));
}
var r = new LabeledValue <long?>("Out:");
r.Value = Convert.ToInt32(val.Value);
r.FormattedValue = r.Value.HasValue ? FormatValue(VALUE_WIDTH, (int)r.Value) : "";
return(r);
}
/// <summary>
/// Returns a labeled value for a nullable type
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="label"></param>
/// <returns></returns>
public static LabeledValue <T> NullLabeledValue <T>(string label)
{
var r = new LabeledValue <T>(label);
r.Value = default(T);
r.FormattedValue = "";
return(r);
}
/// <summary>
/// Create a new instance of this device for the given cycle
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
public ShifterModel(int cycle) : base(Bank.NotApplicable, cycle, VALUE_WIDTH, ADDR_WIDTH, PIPELINE_DELAY)
{
// name
name = DevicePort.Shifter.ToString();
// instructions
instructions.Add(ActiveInstr(cycle));
instructions.Add(ActiveInstr(cycle - 1));
// connectionInputs
connectionInputs = Connections(cycle);
// output
output = OutputCalc(cycle);
// input
input = InputCalc(cycle);
}
/// <summary>
/// Input to the device for the given cycle
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
private static LabeledValue <long?> InputCalc(int cycle)
{
var label = "In:";
var val = ALUModel.OutputCalc(cycle);
if (val != null)
{
var r = new LabeledValue <long?>(label);
r.Value = val.Value;
r.FormattedValue = r.Value.HasValue ? FormatValue(VALUE_WIDTH, r.Value) : "";
return(r);
}
else
{
return(NullLabeledValue <long?>(label));
}
}
/// <summary>
/// Output value of the device for the given cycle
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
public static LabeledValue <long?> OutputCalc(int cycle)
{
var label = "Out:";
var aluout = DFBState.GetCySimulatorPrivateField <long?>(cycle, "aluout");
if (aluout != null)
{
var r = new LabeledValue <long?>(label);
r.Value = aluout;
r.FormattedValue = r.Value.HasValue ? FormatValue(VALUE_WIDTH, (int)r.Value) : "";
return(r);
}
else
{
return(NullLabeledValue <long?>(label));
}
}
/// <summary>
/// Output value of the device for the given cycle
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
public static LabeledValue <long?> OutputCalc(int cycle)
{
var label = "Out:";
var macacc = DFBState.GetCySimulatorPrivateField <long?>(cycle, "MACacc");
if (macacc != null)
{
int maclower = Convert.ToInt32(macacc >> 23);
var r = new LabeledValue <long?>("Out:");
r.Value = maclower;
r.FormattedValue = r.Value.HasValue ? FormatValue(VALUE_WIDTH, r.Value) : "";
return(r);
}
else
{
return(NullLabeledValue <long?>(label));
}
}
/// <summary>
/// Output value of the device for the given cycle
/// </summary>
/// <param name="bankID">BankID of the device</param>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
public static LabeledValue <long?> OutputCalc(Bank bankID, int cycle)
{
var label = "Out:";
// reg
var field = bankID == Bank.Bank_A ? "Aacc" : "Bacc";
var reg_reg = DFBState.GetCySimulatorPrivateField <int?>(cycle, field);
if (reg_reg != null)
{
var r = new LabeledValue <long?>(label);
r.Value = reg_reg.Value;
r.FormattedValue = r.Value.HasValue ? FormatHex(VALUE_WIDTH, r.Value) : "";
return(r);
}
else
{
return(NullLabeledValue <long?>(label));
}
}
/// <summary>
/// Output value of the device for the given cycle
/// </summary>
/// <param name="bankID">BankID of the device</param>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
public static LabeledValue <long?> OutputCalc(Bank bankID, int cycle)
{
var label = "Out:";
var field = bankID == DFBStateModel.Bank.Bank_A
? "a1mux"
: "b1mux";
var val = DFBState.GetCySimulatorPrivateField <long?>(cycle, field);
if (val != null && val.HasValue)
{
var r = new LabeledValue <long?>(label);
r.Value = val.Value;
r.FormattedValue = r.Value.HasValue ? FormatValue(VALUE_WIDTH, r.Value) : "";
return(r);
}
else
{
return(NullLabeledValue <long?>(label));
}
}
/// <summary>
/// Output value of the device for the given cycle
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
public static LabeledValue <long?> OutputCalc(int cycle)
{
var label = "Out:";
if (cycle - PIPELINE_DELAY < 0)
{
return(NullLabeledValue <long?>(label));
}
var val = DFBState.GetCySimulatorPrivateField <long?>(cycle, "shift");
if (val != null && val.HasValue)
{
var r = new LabeledValue <long?>(label);
r.Value = val.Value;
r.FormattedValue = r.Value.HasValue ? FormatValue(VALUE_WIDTH, r.Value) : "";
return(r);
}
else
{
return(NullLabeledValue <long?>(label));
}
}
/// <summary>
/// Create a new instance of this device for the given cycle
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
public MACModel(int cycle) : base(Bank.NotApplicable, cycle, VALUE_WIDTH, 0, PIPELINE_DELAY)
{
// name
name = DevicePort.MAC.ToString();
// instructions
instructions.Add(ActiveInstr(cycle)); // [t-2]
instructions.Add(ActiveInstr(cycle - 1)); // [t-1]
instructions.Add(ActiveInstr(cycle - 2)); // [now]
// connectionInputs
connectionInputs = Connections(cycle);
// output
output = OutputCalc(cycle);
// pipelineItems
pipelineItems = new List <PipelineItem>();
for (int i = 0; i < instructions.Count; i++)
{
var instr = instructions[i];
long? aluValue = null;
long? a = null;
long? b = null;
string outputFormula = null;
int? accum = null;
switch (instr)
{
case "loadalu":
if (i > 0)
{
// Adds the previous ALU output (from the shifter) to the product and starts a new accumulation.
aluValue = DFBState.GetCySimulatorPrivateField <long?>(cycle - i + 1, "aluout");
a = DFBState.GetCySimulatorPrivateField <long?>(cycle - i + 1, "a2mux");
b = DFBState.GetCySimulatorPrivateField <long?>(cycle - i + 1, "b2mux");
if (i == PIPELINE_DELAY)
{
outputFormula = "a * b + [Prev ALU]";
}
}
break;
case "clra":
if (i > 0)
{
// Clears the accumulator and stores the current product
a = DFBState.GetCySimulatorPrivateField <long?>(cycle - i + 1, "a2mux");
b = DFBState.GetCySimulatorPrivateField <long?>(cycle - i + 1, "b2mux");
if (i == PIPELINE_DELAY)
{
accum = 0;
outputFormula = "a * b";
}
}
break;
case "hold":
if (i > 0)
{
// Holds the value in the accumulator from the previous cycle. No multiply
if (i == PIPELINE_DELAY)
{
accum = Convert.ToInt32(OutputCalc(cycle - i + 1).Value);
outputFormula = "Accum";
}
}
break;
case "macc":
if (i > 0)
{
// Multiplies the values on mux2 of side A and side B.
// Adds the product to the current value of the accumulator.
a = DFBState.GetCySimulatorPrivateField <long?>(cycle - i + 1, "a2mux");
b = DFBState.GetCySimulatorPrivateField <long?>(cycle - i + 1, "b2mux");
if (i == PIPELINE_DELAY)
{
accum = Convert.ToInt32(OutputCalc(cycle - i + 1).Value);
outputFormula = "a * b + Accum";
}
}
break;
}
var pipelineItem = new PipelineItem();
var lvAluValue = new LabeledValue <long?>("Prev ALU:");
lvAluValue.Value = aluValue.HasValue ? aluValue.Value : (long?)null;
lvAluValue.FormattedValue = FormatValue(VALUE_WIDTH, lvAluValue.Value);
pipelineItem.AluValue = lvAluValue;
var lvA = new LabeledValue <long?>("a:");
lvA.Value = a.HasValue ? a.Value : (long?)null;
lvA.FormattedValue = FormatValue(VALUE_WIDTH, lvA.Value);
pipelineItem.A = lvA;
var lvB = new LabeledValue <long?>("b:");
lvB.Value = b.HasValue ? b.Value : (long?)null;
lvB.FormattedValue = FormatValue(VALUE_WIDTH, lvB.Value);
pipelineItem.B = lvB;
var lvOutputFormula = new LabeledValue <string>("Formula:");
lvOutputFormula.Value = outputFormula;
lvOutputFormula.FormattedValue = outputFormula;
pipelineItem.OutputFormula = lvOutputFormula;
var lvAccum = new LabeledValue <int?>("Accum:");
lvAccum.Value = accum.HasValue ? accum.Value : (int?)null;
lvAccum.FormattedValue = FormatValue(VALUE_WIDTH, lvAccum.Value);
pipelineItem.Accumulator = lvAccum;
pipelineItems.Add(pipelineItem);
}
}
/// <summary>
/// Builds a list of PipelineItems
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
/// <param name="instructions">Instructions for pipeline</param>
/// <returns></returns>
private static List <PipelineItem> BuildPipelineItems(int cycle, List <string> instructions)
{
var pipelineItems = new List <PipelineItem>();
for (int i = 0; i < instructions.Count; i++)
{
var instr = instructions[i];
long? inputA = null;
long? inputB = null;
DevicePort?inputASource = null;
DevicePort?inputBSource = null;
string outputFormula = null;
if (i > 0)
{
switch (instr ?? "")
{
case "set0":
outputFormula = "0";
break;
case "set1":
outputFormula = "1";
break;
case "seta":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
outputFormula = "A";
break;
case "setb":
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "B";
break;
case "nega":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
outputFormula = "-A";
break;
case "negb":
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "-B";
break;
case "passrama":
inputA = DataRamModel.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.DataRam_A;
outputFormula = "Ram A";
break;
case "passramb":
inputB = DataRamModel.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.DataRam_B;
outputFormula = "Ram B";
break;
case "add":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "A+B";
break;
case "tdeca":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
outputFormula = "A-1";
break;
case "suba":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "B-A";
break;
case "subb":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "A-B";
break;
case "absa":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
outputFormula = "abs(A)";
break;
case "absb":
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "abs(B)";
break;
case "addabsa":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "abs(A)+B";
break;
case "addabsb":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "A+abs(B)";
break;
case "hold":
outputFormula = "ALU Hold";
break;
case "englobals":
outputFormula = "";
break;
case "ensatrnd":
outputFormula = "";
break;
case "ensem":
outputFormula = "";
break;
case "setsem":
outputFormula = "";
break;
case "clearsem":
outputFormula = "";
break;
case "tsuba":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "B-A thr";
break;
case "tsubb":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "A-B thr";
break;
case "taddabsa":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "A+abs(B) thr";
break;
case "taddabsb":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "A+abs(B) thr";
break;
case "sqlcmp":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
outputFormula = "A -> sqlcmp";
break;
case "sqlcnt":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
outputFormula = "A>>16 -> sqcval";
break;
case "sqa":
inputA = Mux3Model.OutputCalc(Bank.Bank_A, cycle - i + 1).Value;
inputASource = DevicePort.Mux_3A;
outputFormula = "Squelch(A)";
break;
case "sqb":
inputB = Mux3Model.OutputCalc(Bank.Bank_B, cycle - i + 1).Value;
inputBSource = DevicePort.Mux_3B;
outputFormula = "Squelch(B)";
break;
}
}
var pipelineItem = new PipelineItem();
var lvA = new LabeledValue <long?>("In A:");
lvA.Value = inputA.HasValue ? inputA.Value : (long?)null;
lvA.FormattedValue = FormatValue(VALUE_WIDTH, lvA.Value);
pipelineItem.InputA = lvA;
var lvB = new LabeledValue <long?>("In B:");
lvB.Value = inputB.HasValue ? inputB.Value : (long?)null;
lvB.FormattedValue = FormatValue(VALUE_WIDTH, lvB.Value);
pipelineItem.InputB = lvB;
var lvASrc = new LabeledValue <DevicePort?>("Src A:");
lvASrc.Value = inputASource == DevicePort.Default ? (DevicePort?)null : inputASource;
lvASrc.FormattedValue = lvASrc.Value.ToString();
pipelineItem.InputASource = lvASrc;
var lvBSrc = new LabeledValue <DevicePort?>("Src B:");
lvBSrc.Value = inputBSource == DevicePort.Default ? (DevicePort?)null : inputBSource;
lvBSrc.FormattedValue = lvBSrc.Value.ToString();
pipelineItem.InputBSource = lvBSrc;
var lvOutputFormula = new LabeledValue <string>("Equation:");
lvOutputFormula.Value = outputFormula;
lvOutputFormula.FormattedValue = outputFormula;
pipelineItem.OutputFormula = lvOutputFormula;
pipelineItems.Add(pipelineItem);
}
return(pipelineItems);
}
/// <summary>
/// Input to the device for the given cycle
/// </summary>
/// <param name="bankID">BankID of the device</param>
/// <param name="cycle">Zero-based program cycle number</param>
/// <param name="input0">First input</param>
/// <param name="input0src">First input source</param>
/// <param name="input1">Second input</param>
/// <param name="input1src">Second input source</param>
private static void InputCalc(Bank bankID, int cycle,
out LabeledValue <long?> input0,
out LabeledValue <DevicePort?> input0src,
out LabeledValue <long?> input1,
out LabeledValue <DevicePort?> input1src)
{
var valLabel = "In:";
var srcLabel = "Src:";
input0 = new LabeledValue <long?>(valLabel);
input1 = new LabeledValue <long?>(valLabel);
input0src = new LabeledValue <DevicePort?>(srcLabel);
input1src = new LabeledValue <DevicePort?>(srcLabel);
// Input latching occurs as follows (variant pipeline):
// Pipeline [t-1] [now]
// Cycle cycle cycle-1
// dmux(_r_, _r_) ->ram in output->
// dmux(__, __) ->mux1in & output->
var ramSource = bankID == Bank.Bank_A
? DevicePort.DataRam_A
: DevicePort.DataRam_B;
var mux1Source = bankID == Bank.Bank_A
? DevicePort.Mux_1A
: DevicePort.Mux_1B;
// Get [now] / cycle-1 input values
var instr1 = InstrForCycle(bankID, cycle - 1);
switch (instr1)
{
// These inputs latched from data ram in [t-1]
case "bra":
case "sra":
case "brm":
case "srm":
input1.Value = DataRamModel.OutputCalc(bankID, cycle - 1).Value;
input1.FormattedValue = FormatValue(VALUE_WIDTH, input1.Value);
input1src.Value = ramSource;
input1src.FormattedValue = input1src.Value.ToString();
break;
// These inputs latch from mux1 [now]
case "ba":
case "sa":
case "bm":
case "sm":
input1.Value = Mux1Model.OutputCalc(bankID, cycle).Value;
input1.FormattedValue = FormatValue(VALUE_WIDTH, input1.Value);
input1src.Value = mux1Source;
input1src.FormattedValue = input1src.Value.ToString();
break;
}
// Get [t-1] / cycle input values
var instr0 = InstrForCycle(bankID, cycle);
switch (instr0)
{
case "bra":
case "sra":
case "brm":
case "srm":
input0.Value = DataRamModel.OutputCalc(bankID, cycle).Value;
input0.FormattedValue = FormatValue(VALUE_WIDTH, input0.Value);
input0src.Value = ramSource;
input0src.FormattedValue = input0src.Value.ToString();
break;
// no op:
case "ba":
case "sa":
case "bm":
case "sm":
default:
break;
}
}
/// <summary>
/// Create a new instance of this device for the given cycle
/// </summary>
/// <param name="bankID">BankID of the device</param>
/// <param name="cycle">Zero-based program cycle number</param>
public Mux3Model(Bank bankID, int cycle) : base(bankID, cycle, VALUE_WIDTH, 0, PIPELINE_DELAY)
{
// name
name = bankID == Bank.Bank_A
? DevicePort.Mux_3A.ToString()
: DevicePort.Mux_3B.ToString();
// instructions
instructions.Add(InstrForCycle(bankID, cycle));
instructions.Add(InstrForCycle(bankID, cycle - 1));
// connectionInputs
connectionInputs = Connections(bankID, cycle);
// output
output = OutputCalc(bankID, cycle);
// pipelineItems
pipelineItems = new List <PipelineItem>();
for (int i = 0; i < instructions.Count; i++)
{
var instr = instructions[i];
DevicePort activeInput = DevicePort.Default;
long? activeValue = null;
if (i == 1)
{
switch (instr)
{
case "ba": // Bus to ALU
case "sa": // Shifter to ALU
case "bra": // Bus to RAM, RAM to ALU
case "sra": // Shifter to RAM, RAM to ALU
activeInput = bankID == Bank.Bank_A
? DevicePort.Mux_2A
: DevicePort.Mux_2B;
activeValue = Mux2Model.OutputCalc(bankID, cycle).Value;
break;
case "brm": // Bus to RAM, to MAC
case "srm": // Shifter to RAM to MAC
activeInput = DevicePort.MAC;
activeValue = MACModel.OutputCalc(cycle).Value;
break;
default:
break;
}
}
var pipelineItem = new PipelineItem();
var lvValue = new LabeledValue <long?>("In:");
lvValue.Value = activeValue.HasValue ? activeValue.Value : (long?)null;
lvValue.FormattedValue = FormatValue(VALUE_WIDTH, lvValue.Value);
pipelineItem.Input = lvValue;
var lvValueSrc = new LabeledValue <DevicePort?>("Src:");
lvValueSrc.Value = activeInput == DevicePort.Default ? (DevicePort?)null : activeInput;
lvValueSrc.FormattedValue = lvValueSrc.Value.ToString();
pipelineItem.InputSource = lvValueSrc;
PipelineItems.Add(pipelineItem);
}
}