Renamed GUI to Model:

[Mograsim.git] / net.mograsim.logic.model.am2900 / src / net / mograsim / logic / model / am2900 / components / Modelram5_12.java

diff --git a/net.mograsim.logic.model.am2900/src/net/mograsim/logic/model/am2900/components/Modelram5_12.java b/net.mograsim.logic.model.am2900/src/net/mograsim/logic/model/am2900/components/Modelram5_12.java
new file mode 100644 (file)
index 0000000..6658f81
--- /dev/null
+++ b/net.mograsim.logic.model.am2900/src/net/mograsim/logic/model/am2900/components/Modelram5_12.java
@@ -0,0 +1,119 @@
+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.ViewModelModifiable;
+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(ViewModelModifiable model, String name)
+       {
+               super(model, "ram5_12", name, "RAM\n5 x 12 Bit");
+               setSize(40, 40);
+               addPin(new Pin(this, "A", 3, PinUsage.INPUT, 10, 0), Position.BOTTOM);
+               addPin(new Pin(this, "B", 3, PinUsage.INPUT, 30, 0), Position.BOTTOM);
+               addPin(new Pin(this, "WE", 1, PinUsage.INPUT, 0, 5), Position.RIGHT);
+               addPin(new Pin(this, "C", 1, PinUsage.INPUT, 0, 15), Position.RIGHT);
+               addPin(new Pin(this, "Y", 12, PinUsage.OUTPUT, 0, 30), Position.RIGHT);
+               addPin(new Pin(this, "D", 12, PinUsage.INPUT, 20, 40), Position.TOP);
+       }
+
+       @Override
+       public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
+       {
+               BitVector[] memC = (BitVector[]) lastState;
+               if (memC == null)
+               {
+                       memC = new BitVector[6];
+                       Arrays.fill(memC, 0, 5, BitVector.of(U, 12));
+                       memC[5] = BitVector.of(U);
+               }
+               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)");
+
+       @Override
+       protected Object getHighLevelState(Object state, String stateID)
+       {
+               Matcher m = stateIDPattern.matcher(stateID);
+               if (m.matches())
+                       return ((BitVector[]) state)[Integer.parseInt(m.group(1), 2)];
+               return super.getHighLevelState(state, stateID);
+       }
+
+       @Override
+       protected Object setHighLevelState(Object lastState, String stateID, Object newHighLevelState)
+       {
+               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());
+                       BitVector[] memC = (BitVector[]) lastState;
+                       memC[addr] = newHighLevelStateCasted;
+                       return memC;
+               }
+               return super.setHighLevelState(lastState, stateID, newHighLevelState);
+       }
+
+       static
+       {
+               IndirectModelComponentCreator.setComponentSupplier(Modelram5_12.class.getCanonicalName(), (m, p, n) -> new Modelram5_12(m, n));
+       }
+}
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