Section 8: Program Editing140
Using CATALOG for Positioning
CATALOG 1 lists all of the programs that you have recorded in program memory. in additions, as an aid to positioning the calculator to programs in program memory, as the listing of catalog 1 progresses, the calculator is set to the location in program memory of each program name as it is displayed. When the next program name is displayed, the calculator is positioned to that program in program memory.
CATALOG 1 only lists ALPHA program labels and END instructions.
For example, if the CIRCLE and AREA programs you have placed in program memory are intact, program memory looks like this ...
 
  01 LBLTCIRCLE    
   
 
  02 X 2    
   
 
  03 PI    
   
 
  04 *    
   
 
  05 END    
   
 
  01 LBLTAREA     
   
 
  02 STO 01    
   
 
  03 X 2    
   
 
  04 PI    
   
 
  05 *    
   
 
  06 2    
   
 
  07 *    
   
 
  08 X<>Y     
   
 
  09 RCL 01     
   
 
  10 *     
   
 
  11 PI    
   
 
  12 *     
   
 
  13 2     
   
 
  14 *     
   
 
  15 PSE     
   
 
  16 +     
   
 
  17 END     
   
...When you execute CATALOG 1, you will see the following.
 
  LBL CIRCLE    
   
 
  END    
   
 
  LBL AREA    
   
 
  END    
   
 
  •END• REG 38    
  (This is the permanent END in program memory.)