1 package net.mograsim.logic.model.am2900.components.am2910;
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;
7 import java.util.Arrays;
10 import net.mograsim.logic.core.types.Bit;
11 import net.mograsim.logic.core.types.BitVector;
12 import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
13 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
14 import net.mograsim.logic.model.model.LogicModelModifiable;
15 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedModelComponent;
16 import net.mograsim.logic.model.model.wires.Pin;
17 import net.mograsim.logic.model.model.wires.PinUsage;
18 import net.mograsim.logic.model.serializing.IndirectModelComponentCreator;
19 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
21 public class ModelAm2910RegCntr extends SimpleRectangularHardcodedModelComponent
23 public ModelAm2910RegCntr(LogicModelModifiable model, String name)
25 super(model, "Am2910RegCntr", name, "Register/\nCounter", false);
27 addPin(new Pin(model, this, "D", 12, PinUsage.INPUT, 20, 0), Position.BOTTOM);
28 addPin(new Pin(model, this, "LD", 1, PinUsage.INPUT, 0, 20), Position.RIGHT);
29 addPin(new Pin(model, this, "DEC", 1, PinUsage.INPUT, 0, 30), Position.RIGHT);
30 addPin(new Pin(model, this, "C", 1, PinUsage.INPUT, 40, 20), Position.LEFT);
31 addPin(new Pin(model, this, "Y", 12, PinUsage.OUTPUT, 20, 40), Position.TOP);
37 public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
39 Bit[] QC = castAndInitState(lastState);
41 ReadEnd D = readEnds.get("D");
42 ReadEnd LD = readEnds.get("LD");
43 ReadEnd DEC = readEnds.get("DEC");
44 ReadEnd C = readEnds.get("C");
45 ReadWriteEnd Y = readWriteEnds.get("Y");
48 Bit CVal = C.getValue();
51 if (oldCVal == ZERO && CVal == ONE)
53 // if (LD.getValue() == ONE || _RLD.getValue() == ZERO)
54 if (LD.getValue() == ONE)
55 System.arraycopy(D.getValues().getBits(), 0, QC, 0, 12);
56 else if (DEC.getValue() == ONE)
59 // TODO extract to helper. This code almost also exists in Modelinc.
60 for (int i = 11; i >= 0; i--)
63 QC[i] = a.xnor(carry);
69 Y.feedSignals(Arrays.copyOfRange(QC, 0, 12));
75 protected Object getHighLevelState(Object state, String stateID)
77 Bit[] QC = castAndInitState(state);
82 return BitVector.of(Arrays.copyOfRange(QC, 0, 12));
84 return super.getHighLevelState(QC, stateID);
89 protected Object setHighLevelState(Object lastState, String stateID, Object newHighLevelState)
91 Bit[] QC = castAndInitState(lastState);
96 BitVector newHighLevelStateCasted = (BitVector) newHighLevelState;
97 if (newHighLevelStateCasted.length() != 12)
98 throw new IllegalArgumentException("Expected BitVector of length 12, not " + newHighLevelStateCasted.length());
99 System.arraycopy(newHighLevelStateCasted.getBits(), 0, QC, 0, 12);
102 return super.setHighLevelState(QC, stateID, newHighLevelState);
106 private static Bit[] castAndInitState(Object lastState)
108 Bit[] QC = (Bit[]) lastState;
119 IndirectModelComponentCreator.setComponentSupplier(ModelAm2910RegCntr.class.getCanonicalName(),
120 (m, p, n) -> new ModelAm2910RegCntr(m, n));