/// <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);
}
}
/// <summary>
/// Input connections to device
/// </summary>
/// <param name="bankID">BankID of the device</param>
/// <param name="cycle">Zero-based program cycle number</param>
/// <returns></returns>
private static List <Connection> Connections(Bank bankID, int cycle)
{
var conns = new List <Connection>();
DevicePort mux2PortOut = DevicePort.Default;
DevicePort macPortOut = DevicePort.Default;
DevicePort mux3Mux2PortIn = DevicePort.Default;
DevicePort mux2MacRamPortIn = DevicePort.Default;
PortStatus mux2PortOut_Stat;
PortStatus macPortOut_Stat;
PortStatus mux3Mux2PortIn_Stat;
PortStatus mux2MacRamPortIn_Stat;
InputsUsed(bankID, cycle,
out mux2PortOut_Stat,
out macPortOut_Stat,
out mux3Mux2PortIn_Stat,
out mux2MacRamPortIn_Stat);
var mux2_label = Mux2Model.OutputCalc(bankID, cycle).FormattedValue;
var mac_label = MACModel.OutputCalc(cycle).FormattedValue;
switch (bankID)
{
case Bank.Bank_A:
mux2PortOut = DevicePort.Mux_2A;
macPortOut = DevicePort.MAC;
mux3Mux2PortIn = DevicePort.Mux_3A;
mux2MacRamPortIn = DevicePort.Mux_3A;
break;
case Bank.Bank_B:
mux2PortOut = DevicePort.Mux_2B;
macPortOut = DevicePort.MAC;
mux3Mux2PortIn = DevicePort.Mux_3B;
mux2MacRamPortIn = DevicePort.Mux_3B;
break;
default:
break;
}
conns.Add(new Connection(
BusType.Data,
mux2PortOut,
mux2PortOut_Stat,
mux2_label,
null,
mux3Mux2PortIn,
mux3Mux2PortIn_Stat));
conns.Add(new Connection(
BusType.Data,
macPortOut,
macPortOut_Stat,
mac_label,
null,
mux2MacRamPortIn,
mux2MacRamPortIn_Stat));
return(conns);
}
