/// <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>
/// <param name="code">Data area section string from the assembly code file</param>
public DataRamModel(Bank bankID, int cycle, string code) : base(bankID, cycle, VALUE_WIDTH, ADDR_WIDTH, PIPELINE_DELAY)
{
// name
name = bankID == Bank.Bank_A
? DevicePort.DataRam_A.ToString()
: DevicePort.DataRam_B.ToString();
// instructions
var instr = ActiveInstr(bankID, cycle);
instructions.Add(instr);
// connectionInputs
connectionInputs = Connections(bankID, cycle);
// output
output = OutputCalc(bankID, cycle);
// ram
var field = bankID == Bank.Bank_A ? "DAram" : "DBram";
ram = DFBState.GetCySimulatorPrivateField <long[]>(cycle, field);
// address / addressPrev
field = bankID == Bank.Bank_A ? "Aaddrnext" : "Baddrnext";
address = DFBState.GetCySimulatorPrivateField <int?>(cycle, field);
addressPrev = DFBState.GetCySimulatorPrivateField <int?>(cycle - 1, field);
// valuePrev
valuePrev = OutputCalc(bankID, cycle - 1).Value;
// valueWritten
var writeInstr = instructions[0].Equals("write(db)") || instructions[0].Equals("write(da)");
if (writeInstr)
{
var mux1_Output = Mux1Model.OutputCalc(bankID, cycle);
if (mux1_Output.Value.HasValue)
{
valueWritten = mux1_Output.Value;
}
}
ramItems = BuildRamItems(bankID, this.ram, code);
var sb = new StringBuilder();
foreach (var ramItem in RamItems)
{
sb.AppendFormat("{0,6} {1,8} {2,10} {3,11} {4}\n", "[" + ramItem.Address + "]", ramItem.ValHex, ramItem.ValDfb, ramItem.ValInt, ramItem.Comment);
}
ramString = sb.ToString().TrimEnd('\n');
}
/// <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 mux1PortOut = DevicePort.Default;
DevicePort dataRamPortOut = DevicePort.Default;
DevicePort mux2Mux1PortIn = DevicePort.Default;
DevicePort mux2DataRamPortIn = DevicePort.Default;
PortStatus mux1PortOut_Stat;
PortStatus dataRamPortOut_Stat;
PortStatus mux2Mux1PortIn_Stat;
PortStatus mux2DataRamPortIn_Stat;
var mux1_label = Mux1Model.OutputCalc(bankID, cycle).FormattedValue;
var dataRam_label = DataRamModel.OutputCalc(bankID, cycle).FormattedValue;
InputsUsed(bankID, cycle,
out mux1PortOut_Stat,
out dataRamPortOut_Stat,
out mux2Mux1PortIn_Stat,
out mux2DataRamPortIn_Stat);
switch (bankID)
{
case Bank.Bank_A:
mux1PortOut = DevicePort.Mux_1A;
dataRamPortOut = DevicePort.DataRam_A;
mux2Mux1PortIn = DevicePort.Mux_2A;
mux2DataRamPortIn = DevicePort.Mux_2A;
break;
case Bank.Bank_B:
mux1PortOut = DevicePort.Mux_1B;
dataRamPortOut = DevicePort.DataRam_B;
mux2Mux1PortIn = DevicePort.Mux_2B;
mux2DataRamPortIn = DevicePort.Mux_2B;
break;
default:
break;
}
conns.Add(new Connection(
BusType.Data,
mux1PortOut,
mux1PortOut_Stat,
mux1_label,
null,
mux2Mux1PortIn,
mux2Mux1PortIn_Stat));
conns.Add(new Connection(
BusType.Data,
dataRamPortOut,
dataRamPortOut_Stat,
dataRam_label,
null,
mux2DataRamPortIn,
mux2DataRamPortIn_Stat));
return(conns);
}
/// <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>
/// 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 acuAddrPortOut = DevicePort.Default;
DevicePort mux1PortOut = DevicePort.Default;
DevicePort ramACUPortIn = DevicePort.Default;
DevicePort ramMux1PortIn = DevicePort.Default;
PortStatus acuAddrPortOut_Stat;
PortStatus mux1PortOut_Stat;
PortStatus ramACUPortIn_Stat;
PortStatus ramMux1PortIn_Stat;
InputsUsed(bankID, cycle,
out acuAddrPortOut_Stat,
out mux1PortOut_Stat,
out ramACUPortIn_Stat,
out ramMux1PortIn_Stat);
var mux1_Model = Mux1Model.OutputCalc(bankID, cycle);
var mux1_label = mux1_Model.FormattedValue;
var acu_Model = ACUModel.OutputCalc(bankID, cycle);
var acu_label = acu_Model.FormattedValue;
switch (bankID)
{
case Bank.Bank_A:
acuAddrPortOut = DevicePort.ACU_A;
ramACUPortIn = DevicePort.DataRam_A;
mux1PortOut = DevicePort.Mux_1A;
ramMux1PortIn = DevicePort.DataRam_A;
break;
case Bank.Bank_B:
acuAddrPortOut = DevicePort.ACU_B;
ramACUPortIn = DevicePort.DataRam_B;
mux1PortOut = DevicePort.Mux_1B;
ramMux1PortIn = DevicePort.DataRam_B;
break;
}
conns.Add(new Connection(
BusType.Address,
acuAddrPortOut,
acuAddrPortOut_Stat,
acu_label,
null,
ramACUPortIn,
ramACUPortIn_Stat));
conns.Add(new Connection(
BusType.Data,
mux1PortOut,
mux1PortOut_Stat,
mux1_label,
null,
ramMux1PortIn,
ramMux1PortIn_Stat));
return(conns);
}
