Practice Commonly Used Flags (2.1.7) - Signed Arithmetic and Overflow - Computer Organisation and Architecture

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6 sample questions

Question 1.
What does the zero flag indicate?
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Consider the output of basic arithmetic operations.
Question 2.
What happens if an overflow occurs?
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Think about the limits of the binary representation.
3Question 3.
What does the carry flag indicate in unsigned arithmetic?
- 1. Overflow
- 2. Underflow
- 3. Carry out of the most significant bit
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Consider what happens when adding large numbers.
4Question 4.
True or False: The zero flag is set if the result of an operation is non-zero.
- True
- False
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Reflect on what zero means in arithmetic operations.
Question 5.
You have two signed 4-bit numbers, -3 (in 2's complement 1101) and 5 (0101). Calculate their sum, and identify the flags set.
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Evaluate using 2's complement rules.
Question 6.
Write a program flow that considers carry and overflow checks for adding two 8-bit unsigned numbers. Describe the necessary conditional jumps.
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Check how to evaluate flags after arithmetic operations.

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