net.mograsim.logic.model.am2900/src/net/mograsim/logic/model/am2900/components/GUImux4_12.java

   1 package net.mograsim.logic.model.am2900.components;
   2
   3 import java.util.Map;
   4
   5 import net.mograsim.logic.core.types.Bit;
   6 import net.mograsim.logic.core.types.BitVector;
   7
   8 import static net.mograsim.logic.core.types.Bit.*;
   9 import net.mograsim.logic.core.wires.Wire.ReadEnd;
  10 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
  11 import net.mograsim.logic.model.model.ViewModelModifiable;
  12 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedGUIComponent;
  13 import net.mograsim.logic.model.model.wires.Pin;
  14 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
  15
  16 public class GUImux4_12 extends SimpleRectangularHardcodedGUIComponent
  17 {
  18         public GUImux4_12(ViewModelModifiable model, String name)
  19         {
  20                 super(model, name, "4-way MUX\n12 bit");
  21                 setSize(80, 40);
  22                 addPin(new Pin(this, "SA", 1, 0, 5), Usage.INPUT, Position.RIGHT);
  23                 addPin(new Pin(this, "SB", 1, 0, 15), Usage.INPUT, Position.RIGHT);
  24                 addPin(new Pin(this, "SC", 1, 0, 25), Usage.INPUT, Position.RIGHT);
  25                 addPin(new Pin(this, "SD", 1, 0, 35), Usage.INPUT, Position.RIGHT);
  26                 addPin(new Pin(this, "A", 12, 10, 0), Usage.INPUT, Position.BOTTOM);
  27                 addPin(new Pin(this, "B", 12, 30, 0), Usage.INPUT, Position.BOTTOM);
  28                 addPin(new Pin(this, "C", 12, 50, 0), Usage.INPUT, Position.BOTTOM);
  29                 addPin(new Pin(this, "D", 12, 70, 0), Usage.INPUT, Position.BOTTOM);
  30                 addPin(new Pin(this, "Y", 12, 40, 40), Usage.OUTPUT, Position.TOP);
  31         }
  32
  33         @Override
  34         protected Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
  35         {
  36                 Bit SAVal = readEnds.get("SA").getValue();
  37                 Bit SBVal = readEnds.get("SB").getValue();
  38                 Bit SCVal = readEnds.get("SC").getValue();
  39                 Bit SDVal = readEnds.get("SD").getValue();
  40                 BitVector YVal;
  41                 if (SAVal == X || SBVal == X || SCVal == X || SDVal == X)
  42                         YVal = BitVector.of(X, 12);
  43                 else if (SAVal == U || SBVal == U || SCVal == U || SDVal == U)
  44                         YVal = BitVector.of(U, 12);
  45                 else if (SAVal == Z || SBVal == Z || SCVal == Z || SDVal == Z)
  46                         YVal = BitVector.of(X, 12);
  47                 else
  48                 {
  49                         YVal = null;
  50                         if (SAVal == ONE)
  51                                 YVal = readEnds.get("A").getValues();
  52                         if (SBVal == ONE)
  53                                 if (YVal != null)
  54                                         YVal = BitVector.of(X, 12);
  55                                 else
  56                                         YVal = readEnds.get("B").getValues();
  57                         if (SCVal == ONE)
  58                                 if (YVal != null)
  59                                         YVal = BitVector.of(X, 12);
  60                                 else
  61                                         YVal = readEnds.get("C").getValues();
  62                         if (SDVal == ONE)
  63                                 if (YVal != null)
  64                                         YVal = BitVector.of(X, 12);
  65                                 else
  66                                         YVal = readEnds.get("D").getValues();
  67                         if (YVal == null)
  68                                 YVal = BitVector.of(ZERO, 12);
  69                 }
  70
  71                 readWriteEnds.get("Y").feedSignals(YVal);
  72                 return null;
  73         }
  74 }