14.5.2.1 - Instruction Fetch Stages
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Practice Questions
Test your understanding with targeted questions
Define the term 'Program Counter'.
💡 Hint: What does the PC hold?
What is the difference between immediate and direct addressing modes?
💡 Hint: Think about where the operand is located.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the role of the Program Counter in instruction fetching?
💡 Hint: Think about what keeps track of instruction order.
In which addressing mode is the operand included directly in the instruction?
💡 Hint: What means that the operand is 'immediate'?
2 more questions available
Challenge Problems
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Given an instruction fetch sequence involving both direct and indirect addressing modes, detail what could happen if a memory address is incorrect.
💡 Hint: Think about what happens in a real-life scenario when you try to find something that isn't there.
Design an instruction sequence that effectively combines immediate and direct addressing modes to compute a simple arithmetic operation. Show how control signals would differ.
💡 Hint: Visualize how the computer might prioritize fetching from memory vs. using an immediate value.
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