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