COMPUTER SCIENCE AND ENGINEERING
COMPUTER ORGANIZATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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MOV BX, [SI+16]
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MOV BX, [SI+8],
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MOV BX, [I+16],
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None of the above
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Detailed explanation-1: -The mode of addressing is known as register indirect mode. In this addressing mode, the offset address of data is in either BX or SI or DI Register. The default segment is either DS or ES. Example: MOV AX, [BX].
Detailed explanation-2: -In the indexed addressing mode, the content of a given index register gets added to an instruction’s address part so as to obtain the effective address. Here, the index register refers to a special CPU register that consists of an index value.
Detailed explanation-3: -Indirect addressing mode In this mode, the data is transferred from one register to another by using the address pointed by the register. For example, MOV A, M: means data is transferred from the memory address pointed by the register pair HL to the register A.
Detailed explanation-4: -Which segment register is being used in the given instruction? Explanation: Here, the default segment for the offset IP is SS. Hence, the Stack Segment (SS) register is being used here.