From 249df37bd9e5789c66705cf6b3399c10c5d5024c Mon Sep 17 00:00:00 2001
From: hneemann <helmut.neemann@arcor.de>
Date: Mon, 15 Jan 2018 12:37:32 +0100
Subject: [PATCH] Fixes a bug that prevented the analysis of the BitExtender.

---
 .../digital/core/arithmetic/BitExtender.java      | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/main/java/de/neemann/digital/core/arithmetic/BitExtender.java b/src/main/java/de/neemann/digital/core/arithmetic/BitExtender.java
index 247cb862b..5e666fc16 100644
--- a/src/main/java/de/neemann/digital/core/arithmetic/BitExtender.java
+++ b/src/main/java/de/neemann/digital/core/arithmetic/BitExtender.java
@@ -48,12 +48,15 @@ public class BitExtender implements Element {
         final long signMask = Bits.signedFlagMask(inBits);
         final long extendMask = ~Bits.mask(inBits);
 
-        in.addObserver(() -> {
-            long inValue = in.getValue();
-            if ((inValue & signMask) == 0)
-                out.setValue(inValue);
-            else
-                out.setValue(inValue | extendMask);
+        in.addObserver(new NodeWithoutDelay(out) {
+            @Override
+            public void hasChanged() {
+                long inValue = in.getValue();
+                if ((inValue & signMask) == 0)
+                    out.setValue(inValue);
+                else
+                    out.setValue(inValue | extendMask);
+            }
         }).hasChanged();
     }