8. Fetch Stage
The chapter discusses the concept of microinstructions and their role in the instruction execution cycle. It highlights the importance of proper sequencing in the execution of microinstructions to prevent conflicts and optimize performance. Additionally, it explains clock grouping as a method to minimize execution time by merging non-dependent microinstructions.
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Sections
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What we have learnt
- Microinstructions are essential in implementing macro instructions.
- Proper sequencing and conflict avoidance are critical in microinstruction execution.
- Clock grouping can optimize the number of time steps required for instruction execution.
Key Concepts
- -- Microinstruction
- A low-level instruction used to implement a specific operation within a macro instruction.
- -- Clock Grouping
- A method of optimizing instruction execution by merging independent microinstructions into fewer time steps.
- -- Program Counter (PC)
- A register that holds the address of the next instruction to be executed.
- -- Memory Address Register (MAR)
- A register that contains the address of the memory location to be accessed.
- -- Memory Buffer Register (MBR)
- A register that holds the data being transferred to or from the memory location addressed by the MAR.
Additional Learning Materials
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