1 package net.mograsim.logic.model.am2900.components;
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;
9 import java.util.Arrays;
11 import java.util.regex.Matcher;
12 import java.util.regex.Pattern;
14 import net.mograsim.logic.core.types.Bit;
15 import net.mograsim.logic.core.types.BitVector;
16 import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
17 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
18 import net.mograsim.logic.model.model.LogicModelModifiable;
19 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedModelComponent;
20 import net.mograsim.logic.model.model.wires.Pin;
21 import net.mograsim.logic.model.model.wires.PinUsage;
22 import net.mograsim.logic.model.serializing.IndirectModelComponentCreator;
23 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
25 public class Modelram5_12 extends SimpleRectangularHardcodedModelComponent
27 public Modelram5_12(LogicModelModifiable model, String name)
29 super(model, "ram5_12", name, "RAM\n5 x 12 Bit", false);
31 addPin(new Pin(model, this, "A", 3, PinUsage.INPUT, 10, 0), Position.BOTTOM);
32 addPin(new Pin(model, this, "B", 3, PinUsage.INPUT, 30, 0), Position.BOTTOM);
33 addPin(new Pin(model, this, "WE", 1, PinUsage.INPUT, 0, 5), Position.RIGHT);
34 addPin(new Pin(model, this, "C", 1, PinUsage.INPUT, 0, 15), Position.RIGHT);
35 addPin(new Pin(model, this, "Y", 12, PinUsage.OUTPUT, 0, 30), Position.RIGHT);
36 addPin(new Pin(model, this, "D", 12, PinUsage.INPUT, 20, 40), Position.TOP);
42 public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
44 BitVector[] memC = castAndInitState(lastState);
46 BitVector CVal = readEnds.get("C").getValues();
47 BitVector oldC = memC[5];
48 // TODO is the timing right?
49 if (oldC.getLSBit(0) == ZERO && CVal.getLSBit(0) == ONE && readEnds.get("WE").getValue() == ONE)
51 int BInt = getAsInt(readEnds.get("B").getValues());
52 if (BInt == -1 || BInt > 4)
53 Arrays.fill(memC, BitVector.of(X, 12));
55 Arrays.fill(memC, BitVector.of(U, 12));
57 memC[BInt] = readEnds.get("D").getValues();
59 int AInt = getAsInt(readEnds.get("A").getValues());
60 BitVector YVal = AInt == -1 || AInt > 4 ? BitVector.of(X, 12) : AInt == -2 ? BitVector.of(U, 12) : memC[AInt];
61 readWriteEnds.get("Y").feedSignals(YVal);
67 * -1 means X, -2 means U
69 private static int getAsInt(BitVector vect)
71 Bit[] bits = vect.getBits();
72 for (int i = 0; i < 3; i++)
75 for (int i = 0; i < 3; i++)
78 for (int i = 0; i < 3; i++)
81 return (bits[0] == ONE ? 4 : 0) + (bits[1] == ONE ? 2 : 0) + (bits[2] == ONE ? 1 : 0);
84 Pattern stateIDPattern = Pattern.compile("c(0[10][10]|100).q");
87 protected Object getHighLevelState(Object state, String stateID)
89 BitVector[] memC = castAndInitState(state);
91 Matcher m = stateIDPattern.matcher(stateID);
93 return memC[Integer.parseInt(m.group(1), 2)];
94 return super.getHighLevelState(memC, stateID);
98 protected Object setHighLevelState(Object lastState, String stateID, Object newHighLevelState)
100 BitVector[] memC = castAndInitState(lastState);
102 Matcher m = stateIDPattern.matcher(stateID);
105 int addr = Integer.parseInt(m.group(1), 2);
106 BitVector newHighLevelStateCasted = (BitVector) newHighLevelState;
107 if (newHighLevelStateCasted.length() != 12)
108 throw new IllegalArgumentException("Expected BitVector of length 12, not " + newHighLevelStateCasted.length());
109 memC[addr] = newHighLevelStateCasted;
112 return super.setHighLevelState(memC, stateID, newHighLevelState);
115 private static BitVector[] castAndInitState(Object state)
117 BitVector[] memC = (BitVector[]) state;
120 memC = new BitVector[6];
121 Arrays.fill(memC, 0, 5, BitVector.of(U, 12));
122 memC[5] = BitVector.of(U);
129 IndirectModelComponentCreator.setComponentSupplier(Modelram5_12.class.getCanonicalName(), (m, p, n) -> new Modelram5_12(m, n));