8085 ISA & AM

Duration: 6 min

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Inside: a video lesson and guided study material.

Module outline

  1. Quantitative Aptitude: Ratio and Proportion (Ratios), Data Interpretation, Mixture and Alligation, Permutation and Combination, Number System, Sequence and Series (Series), Speed Time and Distance, Speed Mathematics and Basic Mathematics, Algebra, Percentage, Profit and Loss, Simple Interest and Compound Interest, Powers and Exponents (Surds and Indices), Time and Work, Mensuration and Geometry, Partnership
  2. Reasoning Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Seating Arrangements, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Directions (Direction Test), Ranking, Order and Sequence, Syllogisms, Blood Relations, Puzzle Solving (Puzzles), Inequality, Machine Input-Output
  3. English Language: Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Construction, Pronoun, Preposition, Conjunction, Adverb, Verb, Modals, Articles, Determiner, Interjection
  4. General Awareness: Evolution of Indian Banking (Banking & Financial Awareness), GK- Current Affairs, Static General Knowledge, Indian Economy
  5. C Concepts + MCQs (IT Specialist): C Programming by Yash Sir, C Language Core
  6. Java (IT Specialist): Java
  7. Python (IT Specialist): Python for Placements by Yash Sir, Python Basics
  8. OOPs (IT Specialist): Object Oriented Programming (OOPS)
  9. DBMS (IT Specialist): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, ORDBMS, Database Security & Authorization, Query Processing & Optimization, Enhanced Data Models, Data Warehousing & Mining, Big Data Systems, NoSQL
  10. SQL (IT Specialist): SQL
  11. Software Engineering (IT Specialist): Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  12. Data Structure (IT Specialist): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  13. Operating System (IT Specialist): Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS, Linux OS, Security, Distributed Systems, Virtual Machines
  14. Compiler Design (IT Specialist): Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  15. Computer Architecture (IT Specialist): Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations, Multiprocessors, Programming the Basic Computer
  16. Data Communication & Networking (IT Specialist): Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security
  17. Descriptive Test (Main Exam): English Writing Ability
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video provides a comprehensive overview of the 8085 microprocessor's architecture, focusing on its instruction set, interrupt handling, and addressing modes. The instructor breaks down the five instruction categories, detailing examples like MOV and ADD. He explains the interrupt hierarchy, distinguishing between maskable and non-maskable types. Finally, he delves into addressing modes, using diagrams to clarify data location. This structured approach helps students understand fundamental 8085 operations and prepares them for programming tasks. The lecture is visually supported by a slide listing all key concepts, ensuring clarity.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor introduces the "Instruction Set of 8085" on the slide. He lists five categories: Data Transfer, Arithmetic, Logical, Branching, and Machine Control Instructions. He underlines each category. For Data Transfer, he writes "Rg" (Register) and "Mem" (Memory) to illustrate movement. He mentions opcodes like MOV, MVI, LXI for transfer, and ADD, SUB, INR, DCR for arithmetic. He underlines Logical Instructions like ANA, ORA, CMA and Branching Instructions like JMP, CALL, RET. He concludes with Machine Control Instructions such as HLT and NOP. This section provides a high-level taxonomy of 8085 operations.

  2. 2:00 – 5:00 02:00-05:00

    The lecture transitions to "Interrupts in 8085". The instructor explains interrupts allow the CPU to respond to external events. He lists TRAP as the highest priority, non-maskable interrupt. He discusses RST 7.5, 6.5, and 5.5 as maskable interrupts and INTR as a general request. He begins the "Addressing Modes" section. He defines Immediate Addressing where data is given directly in the instruction and Register Addressing where data is in a register. He underlines "Data is given directly in instruction" and "Data is in register" to emphasize the distinction. This section sets the stage for understanding how instructions interact with memory.

  3. 5:00 – 5:55 05:00-05:55

    The instructor continues with Addressing Modes: Direct, Indirect, and Implied. For Direct Addressing, the address is specified in the instruction. For Indirect Addressing, he draws a diagram showing a register pair holding an address pointing to data in memory. He labels this "pointer" and writes "1000" in a box. He explains that the register pair acts as a pointer to the actual data location. Finally, he explains Implied Addressing where the operand is implied by the instruction, such as CMA. He underlines "Address stored in register pair" and "Operand is implied". This section clarifies how the CPU fetches operands from different sources.

The video structures 8085 concepts from instruction categories to data access methods. By categorizing instructions into groups like arithmetic and branching, the instructor establishes CPU capabilities. The interrupt discussion highlights handling asynchronous events. The addressing modes section bridges abstract instructions and physical memory, using visual aids to distinguish direct access from indirect pointer-based access. This progression from instruction types to execution control to data location provides a complete foundational understanding. The instructor's use of underlining and handwritten notes reinforces key terms like "non-maskable" and "pointer". The visual diagrams for indirect addressing are particularly helpful for understanding how memory pointers work in assembly language programming.

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