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

Network management system , Shared documents system assignment

Shared documents system assignment

BUS STRUCTURE, Ask question #WHAT IS TWO BUS STRUCTURE

Ask question #WHAT IS TWO BUS STRUCTURE

Basic programming, write a basic program for f= a+b+c//2

write a basic program for f= a+b+c//2

What is fragmentation?, Question 1 What is fragmentation? Question ...

Question 1 What is fragmentation? Question 2 Discuss the various service classes defined by integrated services Question 3 What are congestion? .Mention two algori

Social networking, SOCIAL NETWORKING:  A social network is a network o...

SOCIAL NETWORKING:  A social network is a network of individuals which have some sort of interdependence on each other. This interdependence may be in the form of friendship,

Gaided media, explain the working of gaided media ?

explain the working of gaided media ?

C++ programming, write a program of 2 sum and 2 product number in C++ progr...

write a program of 2 sum and 2 product number in C++ programming language

Discuss about the descriptor classes, Question 1 List down any six feature...

Question 1 List down any six features of a Smartphone Question 2 Give a brief note on a) Internal Flash Disk. b) Use of C++ in Symbian OS Question 3 What are the naming

What do you mean by geo stationary orbit, Question 1 . Explain (a) Scatter ...

Question 1 . Explain (a) Scatter loss                                (b) Aperture medium coupling loss Question 2 . What do you mean by Geo stationary orbit? Question

Paid Website Usability Testers, Assess the reliability of data gathered via...

Assess the reliability of data gathered via paid Internet users. Describe and assess the evaluation method being used by the testing company, i.e., nonvisual and verbal recording o

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