Whitespace and indentation canonicalization. That's what I get for using two editors.

src/main/java/com/loomcom/symon/devices/Memory.java

@@ -7,33 +7,33 @@ import com.loomcom.symon.exceptions.*;
 
 public class Memory extends Device {
 
-	private boolean readOnly;
-	private int[] mem;
+  private boolean readOnly;
+  private int[] mem;
 
-	public Memory(int address, int size, boolean readOnly)
-		    throws MemoryRangeException {
-		super(address, size, "RW Memory");
-		this.readOnly = readOnly;
-		this.mem = new int[size];
-		// Initialize all locations to 0xff
-		Arrays.fill(this.mem, 0xff);
-	}
+  public Memory(int address, int size, boolean readOnly)
+    throws MemoryRangeException {
+    super(address, size, "RW Memory");
+    this.readOnly = readOnly;
+    this.mem = new int[size];
+    // Initialize all locations to 0xff
+    Arrays.fill(this.mem, 0xff);
+  }
 
-	public Memory(int address, int size)
-		    throws MemoryRangeException {
-		this(address, size, false);
-	}
+  public Memory(int address, int size)
+    throws MemoryRangeException {
+    this(address, size, false);
+  }
 
-	public void write(int address, int data) {
-		this.mem[address] = data;
-	}
+  public void write(int address, int data) {
+    this.mem[address] = data;
+  }
 
-	public int read(int address) {
-		return this.mem[address];
-	}
+  public int read(int address) {
+    return this.mem[address];
+  }
 
-	public String toString() {
-		return "Memory: " + getMemoryRange().toString();
-	}
+  public String toString() {
+    return "Memory: " + getMemoryRange().toString();
+  }
 
 }