--- /dev/null
+package net.mograsim.logic.model.am2900.components.am2910;
+
+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.ZERO;
+
+import java.util.Arrays;
+import java.util.Map;
+
+import net.mograsim.logic.core.types.Bit;
+import net.mograsim.logic.core.wires.Wire.ReadEnd;
+import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
+import net.mograsim.logic.model.model.ViewModelModifiable;
+import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedGUIComponent;
+import net.mograsim.logic.model.model.wires.Pin;
+import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
+
+public class GUIAm2910RegCntr extends SimpleRectangularHardcodedGUIComponent
+{
+ public GUIAm2910RegCntr(ViewModelModifiable model, String name)
+ {
+ super(model, name, "Register/\nCounter");
+ setSize(40, 40);
+ addPin(new Pin(this, "D", 12, 20, 0), Usage.INPUT, Position.BOTTOM);
+ addPin(new Pin(this, "_RLD", 1, 0, 5), Usage.INPUT, Position.RIGHT);
+ addPin(new Pin(this, "RWE", 1, 0, 20), Usage.INPUT, Position.RIGHT);
+ addPin(new Pin(this, "RDEC", 1, 0, 30), Usage.INPUT, Position.RIGHT);
+ addPin(new Pin(this, "C", 1, 40, 20), Usage.INPUT, Position.LEFT);
+ addPin(new Pin(this, "Y", 12, 20, 40), Usage.OUTPUT, Position.TOP);
+ }
+
+ @Override
+ protected Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
+ {
+ Bit[] QC = (Bit[]) lastState;
+ if (QC == null)
+ {
+ QC = new Bit[13];
+ Arrays.fill(QC, U);
+ }
+
+ ReadEnd D = readEnds.get("D");
+ ReadEnd _RLD = readEnds.get("_RLD");
+ ReadEnd RWE = readEnds.get("RWE");
+ ReadEnd RDEC = readEnds.get("RDEC");
+ ReadEnd C = readEnds.get("C");
+ ReadWriteEnd Y = readWriteEnds.get("Y");
+
+ Bit oldCVal = QC[12];
+ Bit CVal = C.getValue();
+
+ if (oldCVal == ZERO && CVal == ONE && _RLD.getValue() == ZERO && RWE.getValue() == ONE)
+ {
+ if (RDEC.getValue() == ONE)
+ {
+ Bit carry = Bit.ZERO;
+ // TODO maybe invert loop direction
+ for (int i = 12; i >= 0; i--)
+ {
+ Bit a = QC[i];
+ Bit z;
+ if (a.isBinary() && carry.isBinary())
+ {
+ boolean aBool = a == ONE;
+ boolean carryBool = carry == ONE;
+ z = !aBool ^ carryBool ? ONE : ZERO;
+ carry = aBool || carryBool ? ONE : ZERO;
+ } else
+ {
+ carry = carry.join(a);
+ z = carry;
+ }
+ QC[i] = z;
+ }
+ } else
+ System.arraycopy(D.getValues().getBits(), 0, QC, 0, 12);
+ }
+ QC[12] = CVal;
+ Y.feedSignals(Arrays.copyOfRange(QC, 0, 12));
+
+ return QC;
+ }
+}
\ No newline at end of file
import java.util.List;
import net.mograsim.logic.model.SimpleLogicUIStandalone;
-import net.mograsim.logic.model.am2900.components.am2910.GUIAm2910InstrPLA;
+import net.mograsim.logic.model.am2900.components.am2910.GUIAm2910RegCntr;
import net.mograsim.logic.model.model.ViewModelModifiable;
import net.mograsim.logic.model.model.components.GUIComponent;
import net.mograsim.logic.model.model.components.atomic.GUIBitDisplay;
public static void createTestbench(ViewModelModifiable model)
{
// GUIComponent comp = IndirectGUIComponentCreator.createComponent(model, "GUIAm2901", "Am2901");
- GUIComponent comp = new GUIAm2910InstrPLA(model, "Am2910");
+ GUIComponent comp = new GUIAm2910RegCntr(model, "RegCntr");
// guess which pins are outputs and which are inputs
// TODO this code exists four times... but it seems too "hacky" to put it in a helper class