mograsim.net Git - Mograsim.git/blob

   1 package net.mograsim.logic.model.am2900.components;
   2
   3 import static net.mograsim.logic.core.types.Bit.ONE;
   4 import static net.mograsim.logic.core.types.Bit.U;
   5 import static net.mograsim.logic.core.types.Bit.X;
   6 import static net.mograsim.logic.core.types.Bit.Z;
   7 import static net.mograsim.logic.core.types.Bit.ZERO;
   8
   9 import java.util.Arrays;
  10 import java.util.Map;
  11
  12 import net.mograsim.logic.core.types.Bit;
  13 import net.mograsim.logic.core.types.BitVector;
  14 import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
  15 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
  16 import net.mograsim.logic.model.model.LogicModelModifiable;
  17 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedModelComponent;
  18 import net.mograsim.logic.model.model.wires.Pin;
  19 import net.mograsim.logic.model.model.wires.PinUsage;
  20 import net.mograsim.logic.model.serializing.IndirectModelComponentCreator;
  21 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
  22
  23 public class Modeldff4_finewe extends SimpleRectangularHardcodedModelComponent
  24 {
  25         public Modeldff4_finewe(LogicModelModifiable model, String name)
  26         {
  27                 super(model, "dff4_finewe", name, "D flip flop\n4 bits", false);
  28                 setSize(35, 90);
  29                 addPin(new Pin(model, this, "C", 1, PinUsage.INPUT, 0, 5), Position.RIGHT);
  30                 addPin(new Pin(model, this, "_WE1", 1, PinUsage.INPUT, 0, 15), Position.RIGHT);
  31                 addPin(new Pin(model, this, "_WE2", 1, PinUsage.INPUT, 0, 25), Position.RIGHT);
  32                 addPin(new Pin(model, this, "_WE3", 1, PinUsage.INPUT, 0, 35), Position.RIGHT);
  33                 addPin(new Pin(model, this, "_WE4", 1, PinUsage.INPUT, 0, 45), Position.RIGHT);
  34                 addPin(new Pin(model, this, "D1", 1, PinUsage.INPUT, 0, 55), Position.RIGHT);
  35                 addPin(new Pin(model, this, "D2", 1, PinUsage.INPUT, 0, 65), Position.RIGHT);
  36                 addPin(new Pin(model, this, "D3", 1, PinUsage.INPUT, 0, 75), Position.RIGHT);
  37                 addPin(new Pin(model, this, "D4", 1, PinUsage.INPUT, 0, 85), Position.RIGHT);
  38                 addPin(new Pin(model, this, "Q1", 1, PinUsage.OUTPUT, 35, 5), Position.LEFT);
  39                 addPin(new Pin(model, this, "Q2", 1, PinUsage.OUTPUT, 35, 15), Position.LEFT);
  40                 addPin(new Pin(model, this, "Q3", 1, PinUsage.OUTPUT, 35, 25), Position.LEFT);
  41                 addPin(new Pin(model, this, "Q4", 1, PinUsage.OUTPUT, 35, 35), Position.LEFT);
  42
  43                 init();
  44         }
  45
  46         @Override
  47         public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
  48         {
  49                 Bit[] QC = (Bit[]) lastState;
  50                 if (QC == null)
  51                         QC = new Bit[] { U, U, U, U, U };
  52
  53                 Bit CVal = readEnds.get("C").getValue();
  54
  55                 if (QC[0] == ZERO && CVal == ONE)
  56                         for (int i = 1; i < 5; i++)
  57                         {
  58                                 Bit WEiVal = readEnds.get("_WE" + i).getValue();
  59                                 if (WEiVal == X || WEiVal == Z)
  60                                         QC[i] = X;
  61                                 else if (WEiVal == U)
  62                                         QC[i] = U;
  63                                 else if (WEiVal == ZERO)
  64                                         QC[i] = readEnds.get("D" + i).getValue();
  65                         }
  66
  67                 QC[0] = CVal;
  68
  69                 readWriteEnds.get("Q1").feedSignals(QC[1]);
  70                 readWriteEnds.get("Q2").feedSignals(QC[2]);
  71                 readWriteEnds.get("Q3").feedSignals(QC[3]);
  72                 readWriteEnds.get("Q4").feedSignals(QC[4]);
  73
  74                 return QC;
  75         }
  76
  77         @Override
  78         protected Object getHighLevelState(Object state, String stateID)
  79         {
  80                 switch (stateID)
  81                 {
  82                 case "q":
  83                         return state == null ? BitVector.of(U, U, U, U) : BitVector.of(Arrays.copyOfRange((Bit[]) state, 1, 5));
  84                 default:
  85                         return super.getHighLevelState(state, stateID);
  86                 }
  87         }
  88
  89         @Override
  90         protected Object setHighLevelState(Object lastState, String stateID, Object newHighLevelState)
  91         {
  92                 switch (stateID)
  93                 {
  94                 case "q":
  95                         BitVector newHighLevelStateCasted = (BitVector) newHighLevelState;
  96                         if (newHighLevelStateCasted.length() != 4)
  97                                 throw new IllegalArgumentException("Expected BitVector of length 4, not " + newHighLevelStateCasted.length());
  98                         System.arraycopy(newHighLevelStateCasted.getBits(), 0, lastState, 1, 4);
  99                         return lastState;
 100                 default:
 101                         return super.setHighLevelState(lastState, stateID, newHighLevelState);
 102                 }
 103         }
 104
 105         static
 106         {
 107                 IndirectModelComponentCreator.setComponentSupplier(Modeldff4_finewe.class.getCanonicalName(),
 108                                 (m, p, n) -> new Modeldff4_finewe(m, n));
 109         }
 110 }