X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=net.mograsim.logic.core%2Fsrc%2Fnet%2Fmograsim%2Flogic%2Fcore%2Fcomponents%2FDemux.java;h=e5b228d158d7c88c13a9b1acd466ea530e04a803;hb=ecc651406020231ff0ebc8d1bfc6f916693f69c6;hp=5da1bf6a981dd7b04cfddbfd848706f730b78236;hpb=67c1d352795802dae0c045cedeed82c883819d4e;p=Mograsim.git diff --git a/net.mograsim.logic.core/src/net/mograsim/logic/core/components/Demux.java b/net.mograsim.logic.core/src/net/mograsim/logic/core/components/Demux.java index 5da1bf6a..e5b228d1 100644 --- a/net.mograsim.logic.core/src/net/mograsim/logic/core/components/Demux.java +++ b/net.mograsim.logic.core/src/net/mograsim/logic/core/components/Demux.java @@ -1,82 +1,82 @@ -package net.mograsim.logic.core.components; - -import java.util.List; - -import net.mograsim.logic.core.timeline.Timeline; -import net.mograsim.logic.core.wires.Wire; -import net.mograsim.logic.core.wires.Wire.ReadEnd; -import net.mograsim.logic.core.wires.Wire.ReadWriteEnd; - -/** - * 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 Demux extends BasicComponent -{ - private final ReadEnd select, in; - private final ReadWriteEnd[] outputs; - private final int outputSize; - private int selected = -1; - - /** - * Output {@link Wire}s and in must be of uniform length - * - * @param in Must be of uniform length with all outputs. - * @param select Indexes the output array to which the input is mapped. Must have enough bits to index all outputs. - * @param outputs One of these outputs receives the input signal, depending on the select bits - */ - public Demux(Timeline timeline, int processTime, ReadEnd in, ReadEnd select, ReadWriteEnd... outputs) - { - super(timeline, processTime); - outputSize = in.length(); - - this.in = in; - this.outputs = outputs; - for (int i = 0; i < this.outputs.length; i++) - { - if (outputs[i].length() != outputSize) - throw new IllegalArgumentException("All DEMUX wire arrays must be of uniform length!"); - this.outputs[i] = outputs[i]; - } - - this.select = select; - select.addObserver(this); - - int maxInputs = 1 << select.length(); - if (this.outputs.length > maxInputs) - throw new IllegalArgumentException("There are more outputs (" + this.outputs.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 >= outputs.length) - selectValue = -1; - - if (selected != selectValue && selected != -1) - outputs[selected].clearSignals(); - - selected = selectValue; - - if (selectValue != -1) - outputs[selectValue].feedSignals(in.getValues()); - } - - @Override - public List getAllInputs() - { - return List.of(in, select); - } - - @Override - public List getAllOutputs() - { - return List.of(outputs); - } -} +package net.mograsim.logic.core.components; + +import java.util.List; + +import net.mograsim.logic.core.timeline.Timeline; +import net.mograsim.logic.core.wires.Wire; +import net.mograsim.logic.core.wires.Wire.ReadEnd; +import net.mograsim.logic.core.wires.Wire.ReadWriteEnd; + +/** + * 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 Demux extends BasicComponent +{ + private final ReadEnd select, in; + private final ReadWriteEnd[] outputs; + private final int outputSize; + private int selected = -1; + + /** + * Output {@link Wire}s and in must be of uniform length + * + * @param in Must be of uniform length with all outputs. + * @param select Indexes the output array to which the input is mapped. Must have enough bits to index all outputs. + * @param outputs One of these outputs receives the input signal, depending on the select bits + */ + public Demux(Timeline timeline, int processTime, ReadEnd in, ReadEnd select, ReadWriteEnd... outputs) + { + super(timeline, processTime); + outputSize = in.length(); + + this.in = in; + this.outputs = outputs; + for (int i = 0; i < this.outputs.length; i++) + { + if (outputs[i].length() != outputSize) + throw new IllegalArgumentException("All DEMUX wire arrays must be of uniform length!"); + this.outputs[i] = outputs[i]; + } + + this.select = select; + select.registerObserver(this); + + int maxInputs = 1 << select.length(); + if (this.outputs.length > maxInputs) + throw new IllegalArgumentException("There are more outputs (" + this.outputs.length + ") to the DEMUX than supported by " + + select.length() + " select bits (" + maxInputs + ")."); + in.registerObserver(this); + } + + @Override + public void compute() + { + int selectValue = select.hasNumericValue() ? (int) select.getUnsignedValue() : -1; + if (selectValue >= outputs.length) + selectValue = -1; + + if (selected != selectValue && selected != -1) + outputs[selected].clearSignals(); + + selected = selectValue; + + if (selectValue != -1) + outputs[selectValue].feedSignals(in.getValues()); + } + + @Override + public List getAllInputs() + { + return List.of(in, select); + } + + @Override + public List getAllOutputs() + { + return List.of(outputs); + } +}