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

Two-tiered architecture, Two-tiered architecture: This approach basic...

Two-tiered architecture: This approach basically introduced a database server to replace the file server. The emergence of relational database management systems and graphica

Ultrasonic waves, Ultrasonic Waves: Sound waves outside the audible range o...

Ultrasonic Waves: Sound waves outside the audible range of humans. Ultrasonic waves consist of frequencies greater than 20 kHz and exist in excess of 25 MHz. Applications include i

Stack instructions, These instructions permit the use of the stack to store...

These instructions permit the use of the stack to store or recover data. POP POPF PUSH PUSHF POP INSTRUCTION Purpose: It improves a portion of information from the stack POPF INST

Cppm, sum of first 100 integers

sum of first 100 integers

Computer Literacy Assignment Task, Assignment Task: You are required to dev...

Assignment Task: You are required to develop working solutions in Excel that will manage the annual budget, current month’s inventory, and a list of the current month’s transaction

Distinguish between s-http and ssl, QUESTION (a) Distinguish between S...

QUESTION (a) Distinguish between S-HTTP and SSL (b) What are the three basic security provided by SSL? (c) Discuss the limitations of SSL (d) State the port number us

Visual Basic, difference between genral and event procedures

difference between genral and event procedures

As, access,excel and ms word/

access,excel and ms word/

Waterfall model, What is waterfall model?

What is waterfall model?

Python Numbers, Number data types store numeric values. They are an immutab...

Number data types store numeric values. They are an immutable data type, which means that changing the value of a number data type results in a newly allocated object. Number objec

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