LABORATORY MANUAL 
                      
                                  MICROPROCESSOR AND MICROCONTROLLER 
                                                                                              
                                                                                  B.TECH 
                                                                                              
                                                                        5TH SEMESTER 
                                                                                              
                                                                                              
                                                                                              
                           DEPARTMENT OF ELECTRICAL ENGINEERING 
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                                                  JHARKHAND RAI UNIVERSITY 
                      
                                                                          KAMRE, RANCHI
               LIST OF EXPERIMENTS 
                
                
                
                     S. NO.                         NAME OF EXPERIMENT                                  PAGE NO 
                  1              To examine and modify the contents of the registers in 8085                3-4 
                                 microprocessor kit.                                                
                  2              To examine and modify the contents of any memory locations in              5-6 
                                 8085 microprocessor kit.                                           
                  3              Write 8085 assembly language program for addition of two 8-bit            7-10 
                                 numbers.                                                           
                  4              To write a assembly language program for subtracting 2 bit (8)           11-13 
                                 numbers by using-8085 microprocessor kit.                          
                  5              To write an assembly language program for adding two 16 bit              14-17 
                                 numbers using 8085 microprocessor kit.                             
                  6              To write an assembly language program for subtracting two 16             18-21 
                                 bit numbers using 8085 microprocessor kit.                         
                  7              To write an assembly language for multiplying two 8 bitnumbers           22-24 
                                 by using 8085 microprocessor kit.                                  
                  8              To write an assembly language program for dividing two 8 bit             25-28 
                                 numbers using microprocessor kit.                                  
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                                                                   2 
                              EXPERIMENT NO: 01 
                    EXAMINING THE CONTENTS OF REGISTERS 
          
         AIM: To examine and modify the contents of the registers in 8085 microprocessor kit. 
          
         APPARATUS REQUIRED:8085 kit. 
          
          
         THEORY: 
          
         This command is used to examine/modify any internal registers of the CPU. If one wants to examine the 
         contents of all the registers, one can start from register A and examine all the registers by pressing NEXT 
         key. Whereas if some specific registers is to be examined, then the key for that register can be entered 
         directly. The contents of any register can be changed. 
          
         PROCEDURE: 
          
         To examine the registers. 
          
         Step 1: press RESET key before executing program. 
          
         Step2: press SHIFT key and then press EXREG key. 
          
         Step3: Press registers key and NEXT key simultaneously. 
          
         After step 3 follow these steps to modify the contents. 
          
         Step1: press any register and change the data and then press NEXT key. 
          
         Step2: press ‘.’ Key to terminate. 
          
         Step3: press EXREG key and enter the particular register which is changed. 
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
                                      3