Practice Displacement Addressing Mode (31.1.2) - Introduction to Addressing Modes

Practice: Displacement Addressing Mode

Lesson 31.1.2Introduction to Addressing Modes

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10 questions

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6 sample questions

Question 1.
What is displacement addressing mode?
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Think about how we can use offsets.
Question 2.
In displacement addressing, what does R1 represent?
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Consider it as an address pointer.
3Question 3.
What does displacement addressing mode involve?
- Directly accessing memory
- Calculating addresses with an index
- Only utilized in stack operations
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Think about how we refer to something indirectly when calculating the location.
4Question 4.
True or False: Displacement addressing is only for single-byte instructions.
- True
- False
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Consider if it can apply to multiple instructions.
Question 5.
Calculate the effective address if R1 = 3 and the displacement is 5. How would this change if R1 increments by 2?
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Keep adding the displacement to the updated value of R1.
Question 6.
Describe how the location of R1 at 4 pointing to an array would change the outcome of summing the first three elements. If R1 increments sequentially to access each element, what will happen?
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Think of a loop that continues until it sums all the necessary elements.

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