Practice Instruction Decode: Interpreting the Opcode and Addressing Mode Fields - 5.2.2 | Module 5: Control Unit Design | Computer Architecture
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5.2.2 - Instruction Decode: Interpreting the Opcode and Addressing Mode Fields

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does the opcode in an instruction represent?

💡 Hint: Think about what kind of instruction is being performed.

Question 2

Easy

Name one type of addressing mode.

💡 Hint: Consider how the operand is referenced in the instruction.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does the opcode determine in an instruction?

  • The address of the instruction
  • The operation to perform
  • The size of the instruction

💡 Hint: Think about the role of opcodes in instruction execution.

Question 2

Addressing modes only apply to certain types of instructions.

  • True
  • False

💡 Hint: Recall how operands are retrieved in various scenarios.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given an instruction with an opcode of 'STA' (store accumulator) and an addressing mode of 'indirect,' describe the steps the CU takes to execute this instruction.

💡 Hint: Break down the steps from opcode extraction to execution.

Question 2

Explain how the differing addressing modes could affect the performance of the CPU in executing a sequence of instructions rapidly. Discuss an example where one mode might be favored over another.

💡 Hint: Consider the implications for accessing memory versus using direct values in the instructions.

Challenge and get performance evaluation