What is the code for SI/DH register?
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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What is the code for SI/DH register?
Expert Solution
Step 1
SI (Source Index) register
- SI (Source Index) registers are the 16-bit index registers.
- It is used as a source for performing string operations. It has an offset relative to the Data Segment.
DH register
- DH registers come under the special purpose registers, known as DX registers. The DX registers are the data registers that usually performs multiplication and division operations in a microprocessor.
- It usually represents the high-order or 8 bits of the respective registers.
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