net.mograsim.logic.model.am2900/src/net/mograsim/logic/model/am2900/components/GUIdff12.java

   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.ZERO;
   6
   7 import java.util.Arrays;
   8 import java.util.Map;
   9
  10 import net.mograsim.logic.core.types.Bit;
  11 import net.mograsim.logic.core.wires.Wire.ReadEnd;
  12 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
  13 import net.mograsim.logic.model.model.ViewModelModifiable;
  14 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedGUIComponent;
  15 import net.mograsim.logic.model.model.wires.Pin;
  16 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
  17
  18 public class GUIdff12 extends SimpleRectangularHardcodedGUIComponent
  19 {
  20         public GUIdff12(ViewModelModifiable model, String name)
  21         {
  22                 super(model, name, "D flip flop\n12 bits");
  23                 setSize(40, 20);
  24                 addPin(new Pin(this, "D", 12, 20, 20), Usage.INPUT, Position.TOP);
  25                 addPin(new Pin(this, "C", 1, 0, 10), Usage.INPUT, Position.RIGHT);
  26                 addPin(new Pin(this, "Y", 12, 20, 0), Usage.OUTPUT, Position.BOTTOM);
  27         }
  28
  29         @Override
  30         protected Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
  31         {
  32                 Bit[] QC = (Bit[]) lastState;
  33                 if (QC == null)
  34                 {
  35                         QC = new Bit[13];
  36                         Arrays.fill(QC, U);
  37                 }
  38
  39                 Bit CVal = readEnds.get("C").getValue();
  40
  41                 if (QC[12] == ZERO && CVal == ONE)
  42                         System.arraycopy(readEnds.get("D").getValues().getBits(), 0, QC, 0, 12);
  43
  44                 readWriteEnds.get("Y").feedSignals(Arrays.copyOfRange(QC, 0, 12));
  45                 QC[12] = CVal;
  46
  47                 return QC;
  48         }
  49 }