diff --git a/debug/org.eclipse.cdt.debug.core/ChangeLog b/debug/org.eclipse.cdt.debug.core/ChangeLog
index f5fd0ad623f..c3631c1d16c 100644
--- a/debug/org.eclipse.cdt.debug.core/ChangeLog
+++ b/debug/org.eclipse.cdt.debug.core/ChangeLog
@@ -1,3 +1,7 @@
+2002-10-27 Mikhail Khodjaiants
+	* IFormattedMemoryBlock.java: added the 'setItemValue' method.
+	* CFormattedMemoryBlock.java: implementation of the 'setItemValue' method.
+
 2002-10-16 Alain Magloire
 
 	* src/.../core/cdi/model/ICDIMemoryBlock.java (refresh):
diff --git a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/IFormattedMemoryBlock.java b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/IFormattedMemoryBlock.java
index 38783edfbc4..db79891867e 100644
--- a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/IFormattedMemoryBlock.java
+++ b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/IFormattedMemoryBlock.java
@@ -85,6 +85,18 @@ public interface IFormattedMemoryBlock extends IMemoryBlock
 	 */
 	IFormattedMemoryBlockRow[] getRows();
 
+
+	/**
+	 * Sets the value of data item in this block at the specified
+	 * index within this block to the spcified value.
+	 * The index is zero based.
+	 * 
+	 * @param index the index of item to change
+	 * @param newValue the new value
+	 * @throws DebugException if this method fails.  Reasons include:
+	 */
+	void setItemValue( int index, String newValue ) throws DebugException;
+
 	char getPaddingCharacter();
 
 	long nextRowAddress();
diff --git a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/model/CFormattedMemoryBlock.java b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/model/CFormattedMemoryBlock.java
index f4ab2ee2f1d..e9fee0e5066 100644
--- a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/model/CFormattedMemoryBlock.java
+++ b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/model/CFormattedMemoryBlock.java
@@ -6,6 +6,7 @@
 package org.eclipse.cdt.debug.internal.core.model;
 
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 
 import org.eclipse.cdt.debug.core.CDebugCorePlugin;
@@ -83,6 +84,7 @@ public class CFormattedMemoryBlock extends CDebugElement
 	private char fPaddingChar = '.';
 	private List fRows = null;
 	private Long[] fChangedAddresses = new Long[0];
+	private HashSet fDirtyBytes;
 
 	/**
 	 * Constructor for CFormattedMemoryBlock.
@@ -96,16 +98,7 @@ public class CFormattedMemoryBlock extends CDebugElement
 						  		  int numberOfRows,
 						  		  int numberOfColumns )
 	{
-		super( target );
-		fCDIMemoryBlock = cdiMemoryBlock;
-		fAddressExpression = addressExpression;
-		fFormat = format;
-		fWordSize = wordSize;
-		fNumberOfRows = numberOfRows;
-		fNumberOfColumns = numberOfColumns;
-		fDisplayAscii = false;
-		fPaddingChar = 0;
-		getCDISession().getEventManager().addEventListener( this );
+		this( target, cdiMemoryBlock, addressExpression, format, wordSize, numberOfRows, numberOfColumns, '\0' );
 	}
 
 	/**
@@ -130,6 +123,7 @@ public class CFormattedMemoryBlock extends CDebugElement
 		fNumberOfColumns = numberOfColumns;
 		fDisplayAscii = true;
 		fPaddingChar = paddingChar;		
+		fDirtyBytes = new HashSet();
 		getCDISession().getEventManager().addEventListener( this );
 	}
 
@@ -353,6 +347,8 @@ public class CFormattedMemoryBlock extends CDebugElement
 			fCDIMemoryBlock = null;
 		}
 		getCDISession().getEventManager().removeEventListener( this );
+		fDirtyBytes.clear();
+		fDirtyBytes = null;
 	}
 
 	/* (non-Javadoc)
@@ -439,7 +435,8 @@ public class CFormattedMemoryBlock extends CDebugElement
 	
 	private void handleChangedEvent( ICDIMemoryChangedEvent event )
 	{
-		resetRows();		
+		resetRows();
+		resetDirtyBytes();		
 		setChangedAddresses( event.getAddresses() );
 		fireChangeEvent( DebugEvent.CONTENT );
 	}
@@ -474,4 +471,16 @@ public class CFormattedMemoryBlock extends CDebugElement
 	{
 		getCDIMemoryBlock().setFrozen( frozen );
 	}
+
+	/**
+	 * @see org.eclipse.cdt.debug.core.IFormattedMemoryBlock#setItemValue(int, String)
+	 */
+	public void setItemValue( int index, String newValue ) throws DebugException
+	{
+	}
+	
+	private void resetDirtyBytes()
+	{
+		fDirtyBytes.clear();
+	}
 }