Practice Instruction Fetch, Decode, And Execute (22.3.3) - Addressing Modes, Instruction Set and Instruction Execution Flow

Practice: Instruction Fetch, Decode, and Execute

Lesson 22.3.3Addressing Modes, Instruction Set and Instruction Execution Flow

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the role of the program counter during the fetch phase?
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Think about what keeps track of instruction sequences.
Question 2.
Define the term 'opcode'.
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Consider what tells the CPU what to do.
3Question 3.
What is the first step in the instruction execution cycle?
- Decode
- Fetch
- Execute
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Remember the order of operations in the CPU.
4Question 4.
True or False: Immediate addressing always requires fetching operands from memory.
- True
- False
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Think about how operands are utilized in immediate addressing.
Question 5.
Design an instruction cycle that includes an interrupt service routine. Illustrate how the CPU handles the interrupt within the fetch-decode-execute cycle.
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Think about how to illustrate flow with both instruction types and interrupts.
Question 6.
Create a comparative analysis between direct and indirect addressing modes and their efficiency in instruction execution.
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Consider both speed and memory usage.

5 more questions in this section. Enroll free to practise them all.