Practice Instruction Fetch And Execution (21.1.3) - Micro-Programmed Control Unit

Practice: Instruction Fetch and Execution

Lesson 21.1.3Micro-Programmed Control Unit

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10 questions

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6 sample questions

Question 1.
What happens during the fetch phase?
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Think about the first step in processing an instruction.
Question 2.
What is the role of the micro-program counter?
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Consider what directs the flow of instructions.
3Question 3.
What is the primary function of the micro-programmed control unit?
- To execute programs directly
- To generate control signals based on stored micro instructions
- To store data temporarily
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Think about the role of the MCU in the architecture.
4Question 4.
True or False: The fetch phase differs significantly between various instructions.
- True
- False
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Consider what the fetch process aims to achieve.
Question 5.
Consider a scenario where the micro-programmed control unit needs to handle an interrupt during instruction execution. How does it manage the current instruction state and ensure proper branching?
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Think about preservation of execution context and how branching plays into handling exceptions.
Question 6.
Design a memory layout scheme that preserves the integrity of control signals, branching conditions, and instruction operations in micro-program memory. Explain your design choices.
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Reflect on the organization of data and what can cause conflicts during execution.

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