24. Lecture - 10
The chapter delves into the concept of instruction formats within computer architecture, emphasizing the role of opcodes and operand references while introducing various types of instructions such as arithmetic, logical, and memory operations. It explores the construction and execution of instructions in different address modes, including single, two, three, and zero address instructions, and illustrates the trade-offs between instruction complexity and execution efficiency. The chapter ultimately aims to provide a comprehensive understanding of how instructions are formulated and executed within CPU architecture.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Instructions consist of opcodes and operand references that dictate operations in a computer.
- Different instruction formats include zero address, one address, two address, and three address instructions, each with unique implications for memory and processing.
- The trend in modern architectures tends toward simpler, shorter instructions to facilitate faster execution cycles in CPUs.
Key Concepts
- -- Opcode
- The part of an instruction that specifies the operation to be performed.
- -- Operand
- The data on which the operation is performed, which can be immediate values or memory addresses.
- -- Instruction Format
- The layout of a binary instruction that defines how the opcode and operand(s) are arranged.
- -- Addressing Modes
- The methods of specifying operand locations in instructions, including direct, indirect, immediate, and stack-based modes.
- -- Binary Representation
- A numerical representation of data that uses the binary system, crucial for CPU operations.
Additional Learning Materials
Supplementary resources to enhance your learning experience.