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.Wire.ReadEnd;
17 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
18 import net.mograsim.logic.model.model.ViewModelModifiable;
19 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedGUIComponent;
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.IndirectGUIComponentCreator;
23 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
25 public class GUIram5_12 extends SimpleRectangularHardcodedGUIComponent
27 public GUIram5_12(ViewModelModifiable model, String name)
29 super(model, name, "RAM\n5 x 12 Bit");
31 addPin(new Pin(this, "A", 3, PinUsage.INPUT, 10, 0), Position.BOTTOM);
32 addPin(new Pin(this, "B", 3, PinUsage.INPUT, 30, 0), Position.BOTTOM);
33 addPin(new Pin(this, "WE", 1, PinUsage.INPUT, 0, 5), Position.RIGHT);
34 addPin(new Pin(this, "C", 1, PinUsage.INPUT, 0, 15), Position.RIGHT);
35 addPin(new Pin(this, "Y", 12, PinUsage.OUTPUT, 0, 30), Position.RIGHT);
36 addPin(new Pin(this, "D", 12, PinUsage.INPUT, 20, 40), Position.TOP);
40 public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
42 BitVector[] memC = (BitVector[]) lastState;
45 memC = new BitVector[6];
46 Arrays.fill(memC, 0, 5, BitVector.of(U, 12));
47 memC[5] = BitVector.of(U);
49 BitVector CVal = readEnds.get("C").getValues();
50 BitVector oldC = memC[5];
51 // TODO is the timing right?
52 if (oldC.getLSBit(0) == ZERO && CVal.getLSBit(0) == ONE && readEnds.get("WE").getValue() == ONE)
54 int BInt = getAsInt(readEnds.get("B").getValues());
55 if (BInt == -1 || BInt > 4)
56 Arrays.fill(memC, BitVector.of(X, 12));
58 Arrays.fill(memC, BitVector.of(U, 12));
60 memC[BInt] = readEnds.get("D").getValues();
62 int AInt = getAsInt(readEnds.get("A").getValues());
63 BitVector YVal = AInt == -1 || AInt > 4 ? BitVector.of(X, 12) : AInt == -2 ? BitVector.of(U, 12) : memC[AInt];
64 readWriteEnds.get("Y").feedSignals(YVal);
70 * -1 means X, -2 means U
72 private static int getAsInt(BitVector vect)
74 Bit[] bits = vect.getBits();
75 for (int i = 0; i < 3; i++)
78 for (int i = 0; i < 3; i++)
81 for (int i = 0; i < 3; i++)
84 // TODO maybe this is the wrong way around
85 return (bits[0] == ONE ? 4 : 0) + (bits[1] == ONE ? 2 : 0) + (bits[2] == ONE ? 1 : 0);
88 Pattern stateIDPattern = Pattern.compile("c(0[10][10]|100)");
91 protected Object getHighLevelState(Object state, String stateID)
93 Matcher m = stateIDPattern.matcher(stateID);
95 return ((BitVector[]) state)[Integer.parseInt(m.group(1), 2)];
96 return super.getHighLevelState(state, stateID);
100 protected Object setHighLevelState(Object lastState, String stateID, Object newHighLevelState)
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 return ((BitVector[]) lastState)[addr] = newHighLevelStateCasted;
111 return super.setHighLevelState(lastState, stateID, newHighLevelState);
116 IndirectGUIComponentCreator.setComponentSupplier(GUIram5_12.class.getCanonicalName(), (m, p, n) -> new GUIram5_12(m, n));