AMBO University Woliso Campus 
                 School of Technology & Informatics 
                  Department Of Computer Science 
         
         
         
         
         
         
        Microprocessor and Assembly Language Programming 
                         Module Code CoSc M2041 
                                            Course Code CoSc 2043 
         
         
        Prepared By: Mr. Abdisa Lechisa(MSc) 
                                
         
         
                                          Ambo University Woliso Campus, Woliso, Ethiopia 2012 
         
                   Microprocessor and Assembly Language Programming  
          Table of Contents 
          CHAPTER 1- INTRODUCTION TO MICROPROCESSOR AND COMPUTER .................................................................... 1 
            Microprocessor & Its Architecture ......................................................................................................... 4 
            Addressing Modes .................................................................................................................................. 6 
            Data movement instructions ................................................................................................................... 9 
            Arithmetic and Logical Instructions ..................................................................................................... 11 
            Program control instructions ................................................................................................................. 15 
            Summary ............................................................................................................................................... 21 
          CHAPTER 2: PROGRAMMING THE MICROPROCESSOR ................................................................................................ 22 
            Programming the micro-processor ........................................................................................................ 22 
            8086/8088 Hardware Specification....................................................................................................... 24 
            The arithmetic co-processor .................................................................................................................. 29 
            Memory Interface.................................................................................................................................. 31 
            Memory organization in 8086 ............................................................................................................... 31 
            Basic I/O Interface ................................................................................................................................ 34 
            Comparison of 8086 and 8088 Microprocessor .................................................................................... 36 
            The 8087-Intel co-processor ................................................................................................................. 36 
            Bus Interfaces........................................................................................................................................ 39 
            Summary ............................................................................................................................................... 42 
          CHAPTER 3: COMPUTER ORGANIZATION ....................................................................................................................... 43 
            Comparison of 8086 with 8085............................................................................................................. 47 
            Comparison of 8086 with 8088............................................................................................................. 48 
            Interrupts in 8086 .................................................................................................................................. 48 
            Registers for 8086 ................................................................................................................................. 53 
            Summary ............................................................................................................................................... 56 
          CHAPTER-4: ASSEMBLY LANGUAGES ............................................................................................................................. 57 
            Machine Language ................................................................................................................................ 57 
            Assembly language ............................................................................................................................... 57 
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                   Microprocessor and Assembly Language Programming  
            Instruction operands .............................................................................................................................. 61 
            Basic Instructions .................................................................................................................................. 67 
            Assembly Directive ............................................................................................................................... 71 
            Summary ............................................................................................................................................... 77 
          CHAPTER-5- WRITING ASSEMBLY LANGUAGE PROGRAMS ...................................................................................... 78 
            Control Structures ................................................................................................................................. 79 
            Comparisons ......................................................................................................................................... 79 
            Branch instructions ............................................................................................................................... 79 
            The loop instructions............................................................................................................................. 83 
            Translating Standard Control Structures ............................................................................................... 83 
             While loops ....................................................................................................................................... 84 
             Do while loops .................................................................................................................................. 84 
          CHAPTER-6- PROCEDURES AND FUNCTIONS ................................................................................................................. 86 
            Procedures ............................................................................................................................................. 86 
             Near and Far Procedures ................................................................................................................... 90 
             Nested Procedures ............................................................................................................................. 90 
            Functions ............................................................................................................................................... 91 
            Saving the state of Machine .................................................................................................................. 92 
            Parameters ............................................................................................................................................. 95 
             Pass by Value .................................................................................................................................... 96 
             Pass by Reference ............................................................................................................................. 96 
             Pass by Value-Returned .................................................................................................................... 97 
             Pass by Result ................................................................................................................................... 97 
             Pass by Name .................................................................................................................................... 98 
             Passing Parameters in Registers...................................................................................................... 100 
             Passing Parameters on the Stack ..................................................................................................... 104 
            Summary ............................................................................................................................................. 106 
          CHAPTER-7 INSTRUCTION TYPES ................................................................................................................................... 107 
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            Microprocessor and Assembly Language Programming  
        Stack Instructions ................................................................................................................................ 107 
         PUSH .............................................................................................................................................. 107 
         POP ................................................................................................................................................. 109 
        Integral ALU instructions ................................................................................................................... 111 
         Arithmetic Instructions ................................................................................................................... 111 
         Logical Instruction .......................................................................................................................... 123 
        Floating Point instructions .................................................................................................................. 129 
        
        
        
        
        
        
        
        
        
        
        
        
        
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