-package net.mograsim.logic.model.am2900.components;
-
-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 net.mograsim.logic.core.types.Bit;
-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.IdentifyParams;
-import net.mograsim.logic.model.serializing.IndirectModelComponentCreator;
-import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
-
-public class Modelinc extends SimpleRectangularHardcodedModelComponent
-{
- private final int logicWidth;
-
- public Modelinc(LogicModelModifiable model, String name, int logicWidth)
- {
- super(model, "inc", name, "Incrementer", false);
- this.logicWidth = logicWidth;
- setSize(40, 20);
- addPin(new Pin(model, this, "A", logicWidth, PinUsage.INPUT, 20, 20), Position.TOP);
- addPin(new Pin(model, this, "CI", 1, PinUsage.INPUT, 40, 10), Position.LEFT);
- addPin(new Pin(model, this, "Y", logicWidth, PinUsage.OUTPUT, 20, 0), Position.BOTTOM);
-
- init();
- }
-
- @Override
- public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
- {
- Bit[] ABits = readEnds.get("A").getValues().getBits();
- Bit CIVal = readEnds.get("CI").getValue();
- Bit[] YBits = new Bit[logicWidth];
- if (CIVal == X)
- Arrays.fill(YBits, X);
- else if (CIVal == U)
- Arrays.fill(YBits, U);
- else if (CIVal == Z)
- Arrays.fill(YBits, X);
- else if (CIVal == ZERO)
- YBits = ABits;
- else
- {
- Bit carry = Bit.ONE;
- // TODO extract to helper. This code almost also exists in ModelAm2910RegCntr.
- for (int i = logicWidth - 1; i >= 0; i--)
- {
- Bit a = ABits[i];
- YBits[i] = a.xor(carry);
- carry = a.and(carry);
- }
- }
- readWriteEnds.get("Y").feedSignals(YBits);
- return null;
- }
-
- @Override
- public Integer getParamsForSerializing(IdentifyParams idParams)
- {
- return logicWidth;
- }
-
- static
- {
- IndirectModelComponentCreator.setComponentSupplier(Modelinc.class.getCanonicalName(),
- (m, p, n) -> new Modelinc(m, n, p.getAsInt()));
- }
-}
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