-package era.mi.logic.components;\r
-\r
-import java.util.ArrayList;\r
-import java.util.Arrays;\r
-import java.util.Collections;\r
-import java.util.List;\r
-\r
-import era.mi.logic.wires.Wire;\r
-import era.mi.logic.wires.Wire.WireEnd;\r
-\r
-/**\r
- * Models a multiplexer. Takes an arbitrary amount of input {@link Wire}s, one of which, as determined by select, is put through to the\r
- * output.\r
- * \r
- * @author Fabian Stemmler\r
- *\r
- */\r
-public class Mux extends BasicComponent\r
-{\r
- private WireEnd select;\r
- private WireEnd out;\r
- private WireEnd[] inputs;\r
- private final int outputSize;\r
-\r
- /**\r
- * Input {@link Wire}s and out must be of uniform length\r
- * \r
- * @param out Must be of uniform length with all inputs.\r
- * @param select Indexes the input array which is to be mapped to the output. Must have enough bits to index all inputs.\r
- * @param inputs One of these inputs is mapped to the output, depending on the select bits\r
- */\r
- public Mux(int processTime, WireEnd out, WireEnd select, WireEnd... inputs)\r
- {\r
- super(processTime);\r
- outputSize = out.length();\r
-\r
- this.inputs = inputs.clone();\r
- for (int i = 0; i < this.inputs.length; i++)\r
- {\r
- if (inputs[i].length() != outputSize)\r
- throw new IllegalArgumentException("All MUX wire arrays must be of uniform length!");\r
- inputs[i].addObserver(this);\r
- }\r
-\r
- this.select = select;\r
- select.addObserver(this);\r
-\r
- int maxInputs = 1 << select.length();\r
- if (this.inputs.length > maxInputs)\r
- throw new IllegalArgumentException("There are more inputs (" + this.inputs.length + ") to the MUX than supported by "\r
- + select.length() + " select bits (" + maxInputs + ").");\r
-\r
- this.out = out;\r
- }\r
-\r
- public WireEnd getOut()\r
- {\r
- return out;\r
- }\r
-\r
- public WireEnd getSelect()\r
- {\r
- return select;\r
- }\r
-\r
- @Override\r
- public void compute()\r
- {\r
- int selectValue;\r
- if (!select.hasNumericValue() || (selectValue = (int) select.getUnsignedValue()) >= inputs.length)\r
- {\r
- out.clearSignals();\r
- return;\r
- }\r
-\r
- WireEnd active = inputs[selectValue];\r
- out.feedSignals(active.getValues());\r
- }\r
-\r
- @Override\r
- public List<WireEnd> getAllInputs()\r
- {\r
- ArrayList<WireEnd> wires = new ArrayList<WireEnd>(Arrays.asList(inputs));\r
- wires.add(select);\r
- return Collections.unmodifiableList(wires);\r
- }\r
-\r
- @Override\r
- public List<WireEnd> getAllOutputs()\r
- {\r
- return List.of(out);\r
- }\r
-}\r
+package era.mi.logic.components;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import era.mi.logic.wires.Wire;
+import era.mi.logic.wires.Wire.WireEnd;
+
+/**
+ * Models a multiplexer. Takes an arbitrary amount of input {@link Wire}s, one of which, as determined by select, is put through to the
+ * output.
+ *
+ * @author Fabian Stemmler
+ *
+ */
+public class Mux extends BasicComponent
+{
+ private WireEnd select;
+ private WireEnd out;
+ private WireEnd[] inputs;
+ private final int outputSize;
+
+ /**
+ * Input {@link Wire}s and out must be of uniform length
+ *
+ * @param out Must be of uniform length with all inputs.
+ * @param select Indexes the input array which is to be mapped to the output. Must have enough bits to index all inputs.
+ * @param inputs One of these inputs is mapped to the output, depending on the select bits
+ */
+ public Mux(int processTime, WireEnd out, WireEnd select, WireEnd... inputs)
+ {
+ super(processTime);
+ outputSize = out.length();
+
+ this.inputs = inputs.clone();
+ for (int i = 0; i < this.inputs.length; i++)
+ {
+ if (inputs[i].length() != outputSize)
+ throw new IllegalArgumentException("All MUX wire arrays must be of uniform length!");
+ inputs[i].addObserver(this);
+ }
+
+ this.select = select;
+ select.addObserver(this);
+
+ int maxInputs = 1 << select.length();
+ if (this.inputs.length > maxInputs)
+ throw new IllegalArgumentException("There are more inputs (" + this.inputs.length + ") to the MUX than supported by "
+ + select.length() + " select bits (" + maxInputs + ").");
+
+ this.out = out;
+ }
+
+ public WireEnd getOut()
+ {
+ return out;
+ }
+
+ public WireEnd getSelect()
+ {
+ return select;
+ }
+
+ @Override
+ public void compute()
+ {
+ int selectValue;
+ if (!select.hasNumericValue() || (selectValue = (int) select.getUnsignedValue()) >= inputs.length)
+ {
+ out.clearSignals();
+ return;
+ }
+
+ WireEnd active = inputs[selectValue];
+ out.feedSignals(active.getValues());
+ }
+
+ @Override
+ public List<WireEnd> getAllInputs()
+ {
+ ArrayList<WireEnd> wires = new ArrayList<WireEnd>(Arrays.asList(inputs));
+ wires.add(select);
+ return Collections.unmodifiableList(wires);
+ }
+
+ @Override
+ public List<WireEnd> getAllOutputs()
+ {
+ return List.of(out);
+ }
+}
projects / Mograsim.git / blobdiff