X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=era.mi%2Fsrc%2Fera%2Fmi%2Flogic%2Fcomponents%2FTriStateBuffer.java;fp=era.mi%2Fsrc%2Fera%2Fmi%2Flogic%2Fcomponents%2FTriStateBuffer.java;h=4000ae66e1778fbc506a61def85d0ce19ce681c7;hb=49f569b513c36e8ad421fd5a547bf34bd830652a;hp=0000000000000000000000000000000000000000;hpb=670a82cafe6435b2cdaf02e86701fedd14970c1c;p=Mograsim.git

diff --git a/era.mi/src/era/mi/logic/components/TriStateBuffer.java b/era.mi/src/era/mi/logic/components/TriStateBuffer.java
new file mode 100644
index 00000000..4000ae66
--- /dev/null
+++ b/era.mi/src/era/mi/logic/components/TriStateBuffer.java
@@ -0,0 +1,33 @@
+package era.mi.logic.components;
+
+import era.mi.logic.Bit;
+import era.mi.logic.wires.WireArray;
+import era.mi.logic.wires.WireArray.WireArrayInput;
+
+public class TriStateBuffer extends BasicComponent{
+	WireArray in, enable;
+	WireArrayInput outI;
+	
+	public TriStateBuffer(int processTime, WireArray in, WireArray out, WireArray enable) {
+		super(processTime);
+		if(in.length != out.length)
+			throw new IllegalArgumentException("Tri-state output must have the same amount of bits as the input. Input: " + in.length + " Output: " + out.length);
+		if(enable.length != 1)
+			throw new IllegalArgumentException("Tri-state enable must have exactly one bit, not " + enable.length + ".");
+		this.in = in;
+		in.addObserver(this);
+		this.enable = enable;
+		enable.addObserver(this);
+		outI = out.createInput();
+	}
+	
+	@Override
+	protected void compute()
+	{
+		if(enable.getValue() == Bit.ONE)
+			outI.feedSignals(in.getValues());
+		else
+			outI.clearSignals();
+	}
+
+}