Computer Organisation and Architecture - Vol 1 | 31. Introduction to Addressing Modes by Abraham | Learn Smarter
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31. Introduction to Addressing Modes

This chapter delves into various addressing modes in CPU programming, elucidating how memory locations are determined and utilized in different instruction formats. It highlights the distinction between immediate, direct, indirect, and displacement addressing modes, while explaining the complexities involved in multiple word instructions and their implications on CPU operations. Through practical examples, the chapter reinforces the concept of memory management as it relates to instruction processing.

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Sections

  • 31.1

    Introduction To Addressing Modes

    This section provides an overview of addressing modes in computer architecture, explaining how data is accessed and manipulated in registers and memory.

    Learning Practice

  • 31.1.1

    Indirect Addressing Mode

    This section discusses the concept of indirect addressing mode in computer architecture, detailing how operands are accessed using memory locations determined by register values.

    Learning Practice

  • 31.1.2

    Displacement Addressing Mode

    This section discusses displacement addressing mode, explaining how operands from memory are calculated and used in operations.

    Learning Practice

  • 31.2

    Multiple Word Instructions

    This section explores the concept of multiple word instructions in computing, particularly focusing on addressing modes and operand management.

    Learning Practice

  • 31.2.1

    Memory And Instruction Size

    This section explores the relationship between memory operations and instruction size, focusing on various addressing modes and their impact on instruction length.

    Learning Practice

  • 31.2.2

    Opcode And Operand Structure

    This section explains the structure of opcodes and operands in instruction sets, detailing how addresses and effective locations are calculated in various addressing modes.

    Learning Practice

  • 31.3

    Examples Of Addressing Modes

    This section explores various addressing modes used in assembly language, including examples to illustrate indirect, direct, and displacement addressing.

    Learning Practice

  • 31.3.1

    Immediate Addressing Mode Example

    This section illustrates the concepts of immediate addressing modes in CPU operations, particularly focusing on how registers interact with memory locations.

    Learning Practice

  • 31.3.2

    Direct Addressing Mode Example

    This section explains the direct addressing mode in computer architecture, detailing how memory locations can be calculated and accessed through registers.

    Learning Practice

  • 31.3.3

    Indirect Addressing Mode Example

    The section explains how the indirect addressing mode in processor operations allows registers to retrieve data from memory locations based on computed addresses.

    Learning Practice

  • 31.3.4

    Displacement Addressing Mode Example

    This section explains the displacement addressing mode in computer architecture, utilizing examples to illustrate how effective addresses are calculated and used in instructions.

    Learning Practice

  • 31.4

    Complexities In Addressing Modes

    This section discusses the complexities of addressing modes in CPU operations, particularly focusing on register manipulations and memory addressing strategies.

    Learning Practice

  • 31.4.1

    Handling Larger Instruction Sizes

    This section discusses how larger instruction sizes in computer architecture can complicate operations and addresses mechanisms for handling them.

    Learning Practice

  • 31.4.2

    Stack Operations

    This section explores various stack operations, focusing on register manipulation and memory addressing through examples.

    Learning Practice

  • 31.5

    Conclusion

    This section summarizes key concepts of register R5 and memory addressing, highlighting how values are processed through registers and the implications of indirect and displacement addressing modes.

    Learning Practice

References

ch12 part c.pdf

Class Notes

Memorization

What we have learnt

  • Addressing modes are crucia...
  • Immediate, direct, indirect...
  • Complexity in instructions ...

Final Test

Revision Tests