X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=net.mograsim.machine%2Fsrc%2Fnet%2Fmograsim%2Fmachine%2FMemory.java;h=0ff9bb41fdcd80ab036ef26de56ba5d4e701623c;hb=4ba119cab03498736851e6f3f32eec1957839a2e;hp=8297ebb95e4600d06ae40723598791686498874d;hpb=addfe2790a05cc7a6106ef66acd1d7e7d8845e4c;p=Mograsim.git

diff --git a/net.mograsim.machine/src/net/mograsim/machine/Memory.java b/net.mograsim.machine/src/net/mograsim/machine/Memory.java
index 8297ebb9..0ff9bb41 100644
--- a/net.mograsim.machine/src/net/mograsim/machine/Memory.java
+++ b/net.mograsim.machine/src/net/mograsim/machine/Memory.java
@@ -9,12 +9,28 @@ public interface Memory<T>
 	 * @throws IndexOutOfBoundsException
 	 */
 	public T getCell(long address);
-	
+
 	/**
 	 * Sets the data at the supplied address
+	 * 
 	 * @throws IndexOutOfBoundsException
 	 */
 	public void setCell(long address, T data);
-	
-	public long size();
+
+	public default long size()
+	{
+		MemoryDefinition def = getDefinition();
+		return Long.max(0, def.getMaximalAddress() - def.getMinimalAddress() + 1);
+	}
+
+	/**
+	 * Registers an observer to be notified when a memory cell is modified
+	 */
+	public void registerObserver(MemoryObserver ob);
+
+	public void deregisterObserver(MemoryObserver ob);
+
+	public void notifyObservers(long address);
+
+	public MemoryDefinition getDefinition();
 }