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The instruction that enables subtraction with borrow is

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in Microprocessor by (39.4k points)
The instruction that enables subtraction with borrow is

(a) DEC

(b) SUB

(c) SBB

(d) None of the mentioned

I have been asked this question during an online interview.

This intriguing question originated from Instruction Set of 8086/8088 topic in section 8086/88 Instruction Set and Assembler Directives of Microprocessor

1 Answer

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by (49.2k points)
The correct answer is (c) SBB

Best explanation: The SBB instruction subtracts the source operand and the borrow flag from the destination operand.

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