Answered: Which segment will be accessed for the…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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4. Which segment will be accessed for the instruction MOV [BX],AH.

Expert Solution

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AX – This is the accumulator. It is of 16 bits and is again divided into two sub-8-bit registers AH and AL to also perform 8-bit instructions.
It is generally used for arithmetical and logical instructions but in 8086 it is not necessary to have an accumulator as the final operand.

BX – It is the base register. It is of 16 bits and is again subdivided into two 8-bit registers BH and BL to also perform 8-bit instructions alongside 16bit.
It is used to store the value of the offset.

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