User Account

All Pages

stack instructions, Basic Computer Science

Assignment Help:
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 INSTRUCTION
Purpose: It extracts the flags stored on the stack
POPF
This command moves bits of the word stored on the superior part of the stack to the flag register.
PUSH INSTRUCTION
Purpose: It puts a word on the stack.
Syntax:
PUSH source
The PUSH instruction reduces by two the value of SP and then transfers the data of the source operator to the new resulting address on the just modified register.
The decrement on the address is due to the fact that when adding values to the stack, this one raises from the greater to the smaller segment address, consequently by subtracting 2 from the SP register what we do is to raise the size of the stack by two bytes, which is the only amount of information the stack can handle on every input and output of information.
PUSHF INSTRUCTION
Purpose: It situates the value of the flags on the stack.
Syntax:
PUSHF
This command reduces by 2 the value of the SP register and then the content of the flag register is relocated to the stack, on the address indicated by SP.
The flags are gone stored in memory on the similar bits indicated on the POPF command.

Related Discussions:- stack instructions

Assembly, can you help me to do my assembly program homework

can you help me to do my assembly program homework

Telecommunication processors, brigde

brigde

Basic parts of a computers, The basic parts of a computers are shown in Fig...

The basic parts of a computers are shown in Figure.   Input devices such as a keyboard, mouse or scanner are used to enter input (data and/or instructions), directly

CAI, what is CAI? explain its pit falls.

what is CAI? explain its pit falls.

Principal structures in flow charting, PRINCIPAL STRUCTURES IN FLOW CHARTIN...

PRINCIPAL STRUCTURES IN FLOW CHARTING Structured programing calls for the usage of four principal structures to help simplify the program. They are:     Sequential contro

Characterizations of artificial intelligence, Characterizations of Artifici...

Characterizations of Artificial Intelligence Artificial Intelligence is a typical science to describe, because it has fuzzy borders with, psychology, computer science, mathemat

Telecommunication networks architecture, Telecommunication Networks Archite...

Telecommunication Networks Architecture is the manner in which the components of thenetwork are organized and integrated to provide telecommunication services to users ofthe netwo

Multiplaxer, what is multiplaxer and truth table, digram

what is multiplaxer and truth table, digram

Arithmetic and control unit, micro routine

micro routine

Instruction pipeline, How branching takes place in Instruction pipeline. Ex...

How branching takes place in Instruction pipeline. Explain with suitable examples.

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