7. Overview of the Module
The chapter explores the concept of instruction cycles, focused on macro and micro instructions within computer architecture. It elucidates the processes involved in executing machine instructions, emphasizing the necessity of breaking down complex operations into simpler, executable micro instructions. Furthermore, the situation in which micro instructions can be optimized through clock grouping is discussed, showcasing the efficiency in handling instruction execution.
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What we have learnt
- Instruction cycles involve fetch, decode, execute, and store operations.
- Macro instructions are complex and often consist of several micro instructions.
- Micro instructions, which can execute in a single clock cycle, are the atomic level operations that make up macro instructions.
Key Concepts
- -- Macro Instruction
- A complex machine instruction that may require multiple clock cycles to complete and is made up of several micro instructions.
- -- Micro Instruction
- An atomic instruction that executes in a single clock cycle, serving as the building blocks for executing macro instructions.
- -- Clock Grouping
- A technique used to optimize instruction execution time by scheduling non-dependent micro instructions to run simultaneously within the same clock cycle.
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