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

#title.event handling, javascript handling of events

javascript handling of events

Dbms, Explain displaying an er schema as an er diagram, Database Management...

Explain displaying an er schema as an er diagram, Database Management System

Memory, what is cache memory

what is cache memory

Computational physiology, Estimate the mean deflection of the QRS complex i...

Estimate the mean deflection of the QRS complex in each of the six standard leads (I, II, III, aVR, aVL, aVF) in Figure 1 and then estimate the mean heart vector for the normal hea

DBMS, define transaction with its properties? And also explain the transiti...

define transaction with its properties? And also explain the transitive dependencies with form

Data Mining Assignment (by Weka), Hi there, I''m just asking that do you d...

Hi there, I''m just asking that do you do data mining assignment?

Objectives of laboratory organisation and management, Objectives When y...

Objectives When you have completed all the work in this unit you should be able to: List the basic components of a personal computer system, 1. describe the use of comput

Nano programing, Nano programming using microcontrol and circuits

Nano programming using microcontrol and circuits

Visual Basic 2012, Can someone help me write a code for force = mass * acce...

Can someone help me write a code for force = mass * acceleration.

Cai, What is CAI? Explain its pitfalls.

What is CAI? Explain its pitfalls.

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: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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