Computer Organisation and Architecture - Vol 1 | 23. Introduction to Interrupt by Abraham | Learn Smarter
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23. Introduction to Interrupt

This chapter discusses the concept of interrupts in computing, detailing how they allow the system to interrupt regular instruction execution to handle urgent tasks. It explains the execution flow concerning program counters, the handling of instruction service routines, and the instruction cycle phases such as fetch, decode, execute, and checking for interrupts. Examples illustrating simple instruction execution and their interaction with memory are also provided.

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Sections

  • 23.1

    Interrupt

    This section discusses the concept of interrupts in instruction execution and their significance in managing hardware and I/O operations.

    Learning Practice

  • 23.1.1

    Introduction To Interrupt

    This section introduces the concept of interrupts in computer architecture, explaining how they alter the normal flow of code execution in response to external events.

    Learning Practice

  • 23.1.2

    Handling Interrupts

    This section explains the concept and handling of interrupts in instruction execution, detailing how program counter values are managed during an interrupt service routine.

    Learning Practice

  • 23.1.3

    Interrupt Service Routine

    The Interrupt Service Routine (ISR) is a critical mechanism in computer systems that manages interrupts to ensure smooth instruction execution.

    Learning Practice

  • 23.2

    Instruction Execution Flow

    This section explains how instruction execution is interrupted and serviced in computer systems, detailing the flow of code management.

    Learning Practice

  • 23.2.1

    Fetch Phase

    The Fetch Phase in computing involves the execution of instructions, checks for interrupts, and manages program counter values for efficient code execution.

    Learning Practice

  • 23.2.2

    Decode Phase

    The Decode Phase focuses on the interrupt handling process, detailing how the CPU responds to interrupts during instruction execution, ensuring that execution can resume seamlessly.

    Learning Practice

  • 23.2.3

    Execute Phase

    The Execute Phase involves the handling of interrupts and the execution of instructions through a systematic process of saving, branching, and restoring the program counter.

    Learning Practice

  • 23.2.4

    Operand Address Calculation

    This section discusses the process of Operand Address Calculation, focusing on instruction sequences, interrupts, and how program counters operate during instruction execution.

    Learning Practice

  • 23.2.5

    Checking For Interrupts

    This section explores the concept of interrupts in programming, explaining how the normal flow of instructions can be disrupted by urgent hardware or I/O events that require immediate attention.

    Learning Practice

  • 23.3

    Instruction Cycle Code (Icc)

    The Instruction Cycle Code (ICC) facilitates the flow and control of instruction execution phases in computing.

    Learning Practice

  • 23.3.1

    Phases Of Instruction Cycle Code

    This section introduces the various phases of the instruction execution cycle, focusing on interrupts and the instruction cycle code.

    Learning Practice

  • 23.3.2

    Immediate Vs. Non-Immediate Addressing

    This section discusses the concepts of immediate and non-immediate addressing in instruction execution and the functionality of interrupt servicing.

    Learning Practice

  • 23.3.3

    Direct And Indirect Addressing

    This section explains the concepts of direct and indirect addressing in the context of instruction execution, including how interrupt handling affects the program counter.

    Learning Practice

  • 23.4

    Example Of Instruction Execution

    This section discusses the concept of interrupts in instruction execution and the lifecycle of an instruction from fetching to execution and servicing interrupts.

    Learning Practice

  • 23.4.1

    Memory Locations And Instructions

    This section covers the mechanism of instruction execution through interrupts, the role of the program counter, and the process of servicing interrupts.

    Learning Practice

  • 23.4.2

    Step-By-Step Code Execution

    This section explains the concept of interrupts in instruction execution and the process of managing program counters during these events.

    Learning Practice

  • 23.5

    Conclusion And Objectives

    This section outlines the execution of indirect instructions through interrupts and presents key objectives of the instructional phase.

    Learning Practice

  • 23.5.1

    Objectives Of The Unit

    The section outlines the objectives of the unit concerning instruction execution and interruptions.

    Learning Practice

  • 23.5.2

    Next Steps In Learning

    The section explains the concept of interrupts in instruction execution and the role of the Instruction Cycle Code (ICC) in managing various instruction phases.

    Learning Practice

References

ch9 part b.pdf

Class Notes

Memorization

What we have learnt

  • Interrupts are essential fo...
  • The instruction cycle inclu...
  • Understanding how to save a...

Final Test

Revision Tests