8051 INSTRUCTION SET ADDRESSING MODES
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following flag set, if the result is greater than 255 (if the most-significant byte is not zero), otherwise it is cleared?
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Overflow flag
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Carry flag
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Parity flag
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Auxiliary carry flag
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Explanation:
Detailed explanation-1: -Sign flag (S) = 0. Carry flag (CY) = no change. Zero flag (Z) = 1.
Detailed explanation-2: -Zero flag (Z): The Z flag is set to 1, if after arithmetic and logical operations, the 8-bit result thus produced, is 00H. If the 8-bit result is not equal to 00H, the Z flag is reset to 0. Thus the Z flag is hoisted to indicate that the result is 0.
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