MEMORY                      
          +--------------------+              
          |  Resident Monitor  |              
          +--------------------+              
          |  OTS Work Area     |              
          +--------------------+              
          |   Line Buffer      |    
          +--------------------+    
          |  Channel Tables    |    
          +--------------------+    
          |  Device Handlers   |    
          |         |          |    
          |         v          |    
          +--------------------+    
          |         ^          |                                
          |         |          |                                
          |    I/O Buffers     |                                
          +--------------------+                                
          |      Program       |                                
          |                    |                                
  $$OTSC: +--------------------+<--PSECT $CODE                  
          |        OTS         |                   
          |      Routines      |                 
  $$OTSI: +--------------------+   PSECT OTS$I                                 
          |   Overlay Handler  |\            
          |     and/or ODT     | \  
    1000  |                    |  \              
          +--------------------+   \                 
     776  |       Stack        |    +-----------+      
          |                    |    |           |    
     500  |                    |    |           |    
          +--------------------+    |    USR    |    
     476  | Interrupt Vectors  |    |           |    
          |                    |    |           |    
      60  |                    |    +-----------+    
          +--------------------+                 
      56  |      System        |                 
          | Communication Area |                 
      40  |                    |                 
          +--------------------+                 
      36  |      Trap          |                 
          |     Vectors        |                 
       0  +--------------------+