/// <summary>
/// Input connections to device
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
private static List <Connection> Connections(int cycle)
{
var conns = new List <Connection>();
DevicePort aluPortOut = DevicePort.ALU;
DevicePort shifterAluPortIn = DevicePort.Shifter;
PortStatus aluPortOut_Stat;
PortStatus shifterAluPortIn_Stat;
InputsUsed(cycle,
out aluPortOut_Stat,
out shifterAluPortIn_Stat);
var alu_label = ALUModel.OutputCalc(cycle).FormattedValue;
conns.Add(new Connection(
BusType.Data,
aluPortOut,
aluPortOut_Stat,
alu_label,
null,
shifterAluPortIn,
shifterAluPortIn_Stat));
return(conns);
}
/// <summary>
/// Inputs used by the device in the active instruction
/// </summary>
/// <param name="cycle">Zero-based program cycle number</param>
/// <param name="aluPortOut_Stat">Status of port</param>
/// <param name="shifterAluPortIn">Status of port</param>
private static void InputsUsed(
int cycle,
out PortStatus aluPortOut_Stat,
out PortStatus shifterAluPortIn)
{
aluPortOut_Stat = PortStatus.Inactive;
shifterAluPortIn = PortStatus.Inactive;
// alu
var aluOutput = ALUModel.OutputCalc(cycle);
if (aluOutput.Value.HasValue)
{
aluPortOut_Stat = PortStatus.Active;
shifterAluPortIn = PortStatus.Active;
}
}
/// <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));
}
}