+++ /dev/null
-package net.mograsim.logic.model.am2900.components;
-
-import static net.mograsim.logic.core.types.Bit.ONE;
-import static net.mograsim.logic.core.types.Bit.U;
-import static net.mograsim.logic.core.types.Bit.X;
-import static net.mograsim.logic.core.types.Bit.Z;
-import static net.mograsim.logic.core.types.Bit.ZERO;
-
-import java.util.Arrays;
-import java.util.Map;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import net.mograsim.logic.core.types.Bit;
-import net.mograsim.logic.core.types.BitVector;
-import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
-import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
-import net.mograsim.logic.model.model.LogicModelModifiable;
-import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedModelComponent;
-import net.mograsim.logic.model.model.wires.Pin;
-import net.mograsim.logic.model.model.wires.PinUsage;
-import net.mograsim.logic.model.serializing.IndirectModelComponentCreator;
-import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
-
-public class Modelram5_12 extends SimpleRectangularHardcodedModelComponent
-{
- public Modelram5_12(LogicModelModifiable model, String name)
- {
- super(model, "ram5_12", name, "RAM\n5 x 12 Bit", false);
- setSize(40, 40);
- addPin(new Pin(model, this, "A", 3, PinUsage.INPUT, 10, 0), Position.BOTTOM);
- addPin(new Pin(model, this, "B", 3, PinUsage.INPUT, 30, 0), Position.BOTTOM);
- addPin(new Pin(model, this, "WE", 1, PinUsage.INPUT, 0, 5), Position.RIGHT);
- addPin(new Pin(model, this, "C", 1, PinUsage.INPUT, 0, 15), Position.RIGHT);
- addPin(new Pin(model, this, "Y", 12, PinUsage.OUTPUT, 0, 30), Position.RIGHT);
- addPin(new Pin(model, this, "D", 12, PinUsage.INPUT, 20, 40), Position.TOP);
-
- init();
- }
-
- @Override
- public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
- {
- BitVector[] memC = castAndInitState(lastState);
-
- BitVector CVal = readEnds.get("C").getValues();
- BitVector oldC = memC[5];
- // TODO is the timing right?
- if (oldC.getLSBit(0) == ZERO && CVal.getLSBit(0) == ONE && readEnds.get("WE").getValue() == ONE)
- {
- int BInt = getAsInt(readEnds.get("B").getValues());
- if (BInt == -1 || BInt > 4)
- Arrays.fill(memC, BitVector.of(X, 12));
- else if (BInt == -2)
- Arrays.fill(memC, BitVector.of(U, 12));
- else
- memC[BInt] = readEnds.get("D").getValues();
- }
- int AInt = getAsInt(readEnds.get("A").getValues());
- BitVector YVal = AInt == -1 || AInt > 4 ? BitVector.of(X, 12) : AInt == -2 ? BitVector.of(U, 12) : memC[AInt];
- readWriteEnds.get("Y").feedSignals(YVal);
- memC[5] = CVal;
- return memC;
- }
-
- /**
- * -1 means X, -2 means U
- */
- private static int getAsInt(BitVector vect)
- {
- Bit[] bits = vect.getBits();
- for (int i = 0; i < 3; i++)
- if (bits[i] == X)
- return -1;
- for (int i = 0; i < 3; i++)
- if (bits[i] == U)
- return -2;
- for (int i = 0; i < 3; i++)
- if (bits[i] == Z)
- return -1;
- return (bits[0] == ONE ? 4 : 0) + (bits[1] == ONE ? 2 : 0) + (bits[2] == ONE ? 1 : 0);
- }
-
- Pattern stateIDPattern = Pattern.compile("c(0[10][10]|100).q");
-
- @Override
- protected Object getHighLevelState(Object state, String stateID)
- {
- BitVector[] memC = castAndInitState(state);
-
- Matcher m = stateIDPattern.matcher(stateID);
- if (m.matches())
- return memC[Integer.parseInt(m.group(1), 2)];
- return super.getHighLevelState(memC, stateID);
- }
-
- @Override
- protected Object setHighLevelState(Object lastState, String stateID, Object newHighLevelState)
- {
- BitVector[] memC = castAndInitState(lastState);
-
- Matcher m = stateIDPattern.matcher(stateID);
- if (m.matches())
- {
- int addr = Integer.parseInt(m.group(1), 2);
- BitVector newHighLevelStateCasted = (BitVector) newHighLevelState;
- if (newHighLevelStateCasted.length() != 12)
- throw new IllegalArgumentException("Expected BitVector of length 12, not " + newHighLevelStateCasted.length());
- memC[addr] = newHighLevelStateCasted;
- return memC;
- }
- return super.setHighLevelState(memC, stateID, newHighLevelState);
- }
-
- private static BitVector[] castAndInitState(Object state)
- {
- BitVector[] memC = (BitVector[]) state;
- if (memC == null)
- {
- memC = new BitVector[6];
- Arrays.fill(memC, 0, 5, BitVector.of(U, 12));
- memC[5] = BitVector.of(U);
- }
- return memC;
- }
-
- static
- {
- IndirectModelComponentCreator.setComponentSupplier(Modelram5_12.class.getCanonicalName(), (m, p, n) -> new Modelram5_12(m, n));
- }
-}
\ No newline at end of file
projects / Mograsim.git / blobdiff