2.3 - Examples of Flag Usage in Control Instructions
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Practice Questions
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What flag indicates that an arithmetic result is zero?
💡 Hint: Think about what signifies a total absence of value.
In what condition is the overflow flag set?
💡 Hint: Consider cases where numbers go beyond their limits.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the overflow flag indicate?
💡 Hint: Focus on the scenarios where result values cannot fit.
True or False: The carry flag is relevant in signed arithmetic.
💡 Hint: Think about the goals of signed versus unsigned arithmetic.
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Challenge Problems
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You have two signed 4-bit numbers: 0111 (7 in decimal) and 1001 (-7). Add them, and describe the resulting flags.
💡 Hint: Focus on the outcome of the addition and its effects on the state of the flags.
During an addition of 1001 (-7 in two's complement) and 1000 (-8), an overflow occurs. Discuss the implications and which flags are affected.
💡 Hint: Reflect on what happens when operations yield unexpected results due to limits.
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