User Account

All Pages

Loading instructions, Basic Computer Science

Assignment Help:
They are particular register instructions. They are used to load bytes or sequences of bytes onto a register.
LODS (LODSB) (LODSW)
LAHF
LDS
LEA
LES
LODS (LODSB) (LODSW) INSTRUCTION
Goal: To load sequences of a byte or a word into the accumulator.
Syntax:
LODS
This instruction takes the sequence found on the address specified by SI, loads it to the AL (or AX) register and adds or subtracts , depending on the state of DF, to SI if it is a bytes transfer or if it is a words transfer.
MOV SI, OFFSET VAR1
LODS
The first line loads the VAR1 address on SI and the second line receives the content of that locality to the AL register.
• The LODSB and LODSW commands are used likewise, the first one loads a byte and the second one a word (it uses the whole AX register).
LAHF INSTRUCTION
Goal: It transfers the full content of the flags to the AH register.
Syntax:
LAHF
This instruction is helpful to make sure the state of the flags through the execution of our program.
LDS INSTRUCTION
Goal: used to load the register of the data segment
Syntax:
LDS destiny, source
The source operator must be a dual word in memory. The word related with the largest address is transferred to DS, in other words it is taken as the segment address. The word associated with the lesser address is the displacement address and it is deposited in the register indicated as destiny.
LEA INSTRUCTION
Goal: To load the address of the source operator
Syntax:
LEA destiny, source
The source operator must be situated in memory, and its displacement is placed on the index register or specified pointer in destiny.

Related Discussions:- Loading instructions

Outline the five main steps in the web design process, QUESTION (a) Out...

QUESTION (a) Outline the five main steps in the Web Design Process (b) Draw an annotated diagram explaining how data is transmitted to web servers during a standard form sub

What is Router. Explain Network Router, A router is a device which has play...

A router is a device which has played an important role in the development and existence of the Internet. Routers are designed to transmit data from other network users to specific

Central processing unit, The Central Processing Unit : Central Processing U...

The Central Processing Unit : Central Processing Unit (CPU) is the brain of the computer. The intricate electronic circuitry of the CPU performs the computer's tasks of handling d

Data transmission, DATA TRANSMISSION: When we talk on the telephone we...

DATA TRANSMISSION: When we talk on the telephone we generally transmit a message to someone else. The message is made up of words that we speak into the telephone instrument.

How to create basic assembler program?, The primary step is to start the De...

The primary step is to start the Debug; this step only consists of typing debug [Enter] on the operative system on time. the "a" (assemble) command is used To assemble a program on

Prelude to programming concepts and design 5th edition, Input a list of pos...

Input a list of positive numbers, terminated by 0, into an array numbers []. Then display the array and the largest and smallest number in it.

Explain the components of it infrastructure, Question 1 Explain in detail ...

Question 1 Explain in detail the different modes of Transportation Question 2 State the meaning of Distribution Strategies. Discuss the different Distribution Strategies

The elif Statement, The elif statement permits you to check multiple expres...

The elif statement permits you to check multiple expressions for truth value and execute a block of code the moment one of the conditions estimates to true. similar to the else, th

Probability, Mike sells on the average 15 newspapers per week (Monday – Fri...

Mike sells on the average 15 newspapers per week (Monday – Friday). Find the probability that 2.1 In a given week he will sell all the newspapers [7] 2.2 In a given day he will sel

Introduction to Computer and Programming Concept, Classify computer systems...

Classify computer systems according to capacity. How they are different from computers according to the classification of technology. Provide comparative study also.

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd