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Microprocessor and its
Applications
(8085 and 8086)
( For B. Sc Computer Science, B.Sc., Physics, and BCA Courses )
Dr.P.Rizwan Ahmed,MCA.,M.Sc., M.Phil.,Ph.D,
HOD, Professor In-Charge, Shift- II Department of Computer Applications & Post Graduate Department of Information Technology Mazharul Uloom College, Ambur โ 635 802 Tamil Nadu, INDIA.
Margham Publications
No.24, Rameswaram Road, T- Nager,
Chennai- 600 017
Phone: 044 โ 22501105,044- Web Site: www.margham.in
E-mail: www.margham.tn@gmail.com
Contents
Preface Acknowledgment
Chapter -1 Introduction to Microcomputer
1.1 Overview of Microcomputer structure and operation 1.2 Memory 1.3 Input/Output 1.4 Data Bus 1.5 Address Bus 1.6 Control Bus 1.7 Central Processing Unit(CPU) 1.8 Hardware, Software and Firmware Summary Short Questions Descriptive Questions
Chapter โ 2 8085 Microprocessor
2.1 Microprocessor 2.2 History and Evolution of Microprocessor 2.3 Working of a Microprocessor 2.4 Applications of Microprocessor 2.5 Architecture of 8085 Microprocessor 2.5.1 Register 2.5.1.1 General Purpose Register 2.5.1.2 Temporary Register 2.5.1.3 Special Purpose Register 2.5.2 Memory Pointer Register 2.5.2.1 Stack Pointer 2.5.2.2 Program Counter 2.5.3 Arithmetic Logic Unit 2.5.4 Instruction Decoder 2.5.5 Machine Cycle Encoder 2.5.6 Address Buffer 2.5.7 Data/Address Buffer 2.5.8 Incrementer/Decremeter Address Latch 2.5.9 Interrupt Control
Chapter โ 5 Programming Techniques and Addressing Modes
5.1 Programming Techniques 5.1.1 Continuous loop 5.1.2 Conditional loop 5.1.3 Counter 5.1.4 Indexing 5.2 Addressing Modes of 8085 5.2.1 Immediate Addressing 5.2.2 Direct Addressing 5.2.3 Register Addressing 5.2.4 Register Indirect Addressing 5.2.5. Implied / Implicit Addressing Summary Short Questions Descriptive Questions
Chapter - 6 Assembly Language
6.1 Assembly Language 6.1.1 Advantages of Assembly Language 6.1.2 Disadvantages of Assembly Language 6.2 Assembly Language programming (ALP) 6.3 Assembly Language Statement format 6.4 Assembler Directives 6.5 Instruction Format 6.5.1 One byte instruction 6.5.2 Two byte instruction 6.5.3 Three byte instruction Summary Short Questions Descriptive Questions
Chapter -7 Writing Assembly Language Programs
7.1 Writing Assembly Language Programs 7.1.1 Store 8-bit data 7.1.2 Exchange the content of memory location 7.1.3 Find the 2โs complement 7.1.4 Find the 1โs complement 7.1.5 Addition of two numbers 7.1.6 Find the sum of series 7.1.7 Subtraction of two numbers
7.1.8 Multiplication of two numbers 7.1.9 Arranging numbers in the ascending order 7.1.10 Find the largest of given numbers 7.1.11 Find the factorial of a number 7.1.12 Multiplication of two 16-bit numbers 7.1.13 Find the smallest number in an array 7.1.14 Find Even and Odd numbers 7.1.15 Division of two 8-bit numbers Summary Short Questions Descriptive Questions
Chapter โ 8 Dynamic Debugging and Time Delay
8.1 Dynamic Debugging 8.2 Tools for Dynamic Debugging 8.2.1 Single step 8.2.2 Register Examiner 8.2.3 Break Point 8.3 Counter 8.4 Time Delay 8.4.1 Time delay using one register 8.4.2 Time delay using register pair 8.4.3 Time delay using looping technique Summary Short Questions Descriptive Questions
Chapter โ 9 Debugging Counter and Time Delay program
9.1 Debugging Counter and Time Delay program 9.1.1 Debugging the program 9.1.2 Delay calculations Summary Short Questions Descriptive Questions
Chapter โ 10 Stack and Subroutines
10.1 Stack 10.1 Programming with stack 10.2 Subroutine Summary
Summary Short Questions Descriptive Questions
Chapter โ 15 Hexadecimal Counter, Modulo 10 Counter and Pulse Timing for flashing lights
15.1 Hexadecimal Counter 15.2 Modulo 10 Counter 15.3. Pulse Timing for flashing lights Summary Short Questions Descriptive Questions
Chapter โ 16 Interrupts in 8085
16.1 Interrupts in 8085 16.2 Types of Interrupts 16.2.1Software Interrupts 16.2.2 Hardware Interrupts 16.3 TRAP 16.4 RIM 16.5 SIM Summary Short Questions Descriptive Questions
Chapter โ 17 DMA, Memory Interfacing and I/O Interfacing
17.1 Direct Memory Access (DMA) 17.2 Memory Interfacing 17.3 Semiconductor Memories 17.3.1 RAM 17.3.2 ROM 17.3.2.1 PROM 17.3.2.2 EPROM 17.3.2.3 EEPROM 17.3.3 Difference between RAM and ROM. 17.4 Address Space Partitioning 17.5 I/O Interfacing 17.5.1 I/O Mapped I/O 17.5.2 Memory mapped I/O 17.5.3 Differentiate between Memory mapped I/O and I/O mapped I/O
Summary Short Questions Descriptive Questions
Chapter โ 18 Programmable Peripheral Interface (8255 )
18.1 Programmable Peripheral Interface (8255) 18.2 Pin diagram of 8255 18.3 Signal diagram of 8255 18.4 Features of 8255 18.5 Block Diagram of 8255 18.6 Modes of operation of 8255 Summary Short Questions Descriptive Questions
Chapter โ 19 Applications
19.1 Stepper Motor 19.2 Temperature Control Summary Review Questions
Chapter โ 20 8085 Programming
Exercise 1: Block data transfer Exercise 2: Adding 2 BCD numbers without carry Exercise 3: Adding 2 Hexa-decimal numbers without carry Exercise 4: Multiplication of two 8 bit numbers Exercise 5: Division of two 8 bit numbers Exercise 6: 1โs complement of a number Exercise 7: 2โs complement of a number Exercise 8: Swapping the numbers Exercise 9: Write an assembly program to find greatest between two numbers Exercise 10: Finding the smallest number in an array. Exercise 11: Sorting of an array of 8 bit data in ascending order Exercise 12: Sorting of an array of 8 bit data in descending order
Chapter โ 21 8086 Microprocessor and Architecture
21.1 Introduction to 8086 Microprocessor 21.2 Features of 8086 Microprocessor 21.3 Pin diagram of 8086 21.4 Signal group of 8086 21.5 Signal Description of 8086
23.7 The 8086 Loop Instructions 23.8 Instruction Timing and Delay Loops 23.8.1 Delay loops for timing Review Questions
Chapter โ 24 String, Procedures and Macros
24.1 The 8086 String instructions 24.1.1 Moving a String 24.1.2 Using compare string byte to check password 24.2 Procedures and Macros 24.2.1 Procedure 24.2.1.1 The 8086 CALL and RET Instructions 24.2.2.2 The 8086 Stack 24.2.2.3 Using PUSH and POP 24.2.2.4 Passing parameters to and from procedures 24.2.2.5 Reentrant Procedures and Recursive Procedure 24.2.2.6 Writing and debugging programs containing procedures 24.2.2.7 Accessing Procedure 24.3 Macros 24.3.1 Comparison Macros and Procedures 24.3.2.Using Parameters in macros Review Questions
Chapter โ 25 Instruction Descriptions and Assembler Directives
25.1 Instruction Description 25.2 Assembler Directives Review Questions
Chapter โ 26 Interfacing Peripherals
26.1 8255 PPI
26.2 8253/8254 PIT
26.3 8237 DMAC
26.4 8259 PIC
26.5 8251 USART Review Questions
APPENDIX A : Two marks Questions with Answer
APPENDIX B : University Question Papers
APPENDIX C: Intel 8085 Instruction Code
APPENDIX D Intel 8085 Opcode Sheet
