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UGC-NET | UGC NET CS 2017 Jan – II | Question 34

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The contents of Register (BL) and Register (AL) of 8085 microprocessor are 49H and 3AH respectively. The contents of AL, the status of carry flag (CF) and sign flag (SF) after executing ‘SUB AL, BL’ assembly language instruction, are
(A) AL = 0FH; CF = 1; SF = 1
(B) AL = F0H; CF = 0; SF = 0
(C) AL = F1H; CF = 1; SF = 1
(D) AL = 1FH; CF = 1; SF = 1


Answer: (C)

Explanation:

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Last Updated : 22 Mar, 2018
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