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

Conditional codes, Explain about conditional codes

Explain about conditional codes

Medical counter/shop, Medical Counter/Shop The Software for medical co...

Medical Counter/Shop The Software for medical counter/shop should maintain: Complete customer Details  Inventory Control  Billing  Linked to Accounts  Have c

Development of UNIX , Development of UNIX: The original UNIX developme...

Development of UNIX: The original UNIX development was performed on a Digital PDP-7 minicomputer and later moved to a PDP-11 minicomputer, the forerunner of the VAX computer.

What is microcontroller?, Microcontroller: A highly integrated microprocess...

Microcontroller: A highly integrated microprocessor designed specifically for use in embedded systems. Microcontrollers typically includes an integrated CPU, memory (a small amount

Project help required!, im student of BSCS 1st semester and I have to make ...

im student of BSCS 1st semester and I have to make project for IT fair and I dont know computer that very much so please I required your help, help me if you can. thanks

Processing element, internet bus

internet bus

Vdu visual display unit output, VDU (Visual Display Unit) output...

VDU (Visual Display Unit) output Make sure that VDUs are of an appropriate type. They can cause severe eyestrain and tension if you do not check: (a) Colour (

C, Byteland county is very famous for luminous jewels. Luminous jewels are ...

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

Fully describe the assessment centre method of selection, Problem: One ...

Problem: One large employer requests CVs from applicants, and, on the basis of these, invites a selected number to take part in a telephone interview. A date and time are provi

High level languages, High level languages: High level languages (conv...

High level languages: High level languages (converted to machine code by compiler or equivalent) are much easier to program, as well as to understand. Several high level langu

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