Practice Objectives Of The Unit (22.4.2) - Addressing Modes, Instruction Set and Instruction Execution Flow

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6 sample questions

Question 1.
What are the three main steps in the fetch-execute cycle?
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Think about the order of operations.
Question 2.
Define direct addressing mode.
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Consider how the operand is accessed.
3Question 3.
What is the first step in the fetch-execute cycle?
- Fetch
- Decode
- Execute
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Think about what happens before anything else when executing an instruction.
4Question 4.
True or False: In direct addressing mode the operand is always located in a separate memory cell.
- True
- False
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Consider how directly you can access the operand.
Question 5.
Given an instruction with an address in direct mode, explain how a CPU identifies the operand.
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Think about the address value that the instruction provides.
Question 6.
Discuss how the use of interrupts enhances program efficiency in CPU operations.
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Consider how the CPU prioritizes tasks based on user interactions.

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