Define stack segment, Computer Engineering

Assignment Help:

Q. Define Stack segment ?

8086 Microprocessor supports Word stack. Stack segment parameters tell the assembler to alert linker that this segment statement states the program stack area.

A program should have a stack area in that computer is continuously carrying on numerous background operations which are completely transparent, even to an assembly language programmer, for illustration a real time clock. Every 55 milliseconds real time clock interrupts.  Every 55 ms CPU is interrupted. CPU records state of its registers and then goes about updating the system clock. When it finishes servicing system clock it has to restore registers and go back to doing whatever it was doing when interruption took place.  All such information gets recorded in stack. If your program has not any stack and if real time clock were to pulse whereas the CPU is running your program there will be no way for CPU to find the way back to your program when it was through updating the clock. 0400H byte is default size of allocation of stack. Please consider if you haven't specified stack segment it is automatically created.


Related Discussions:- Define stack segment

What is difference between cobol and vs cobol ii, In using COBOL on PC we h...

In using COBOL on PC we have only flat files and the programs can access only limited storage, while in VS COBOL II on M/F the programs can access up to 16MB or 2GB depending on th

What is program-controlled i/o, What is program-controlled I/O? In prog...

What is program-controlled I/O? In program controlled I/O the processor repeatedly checks a status flags to achieve the needed synchronization among the processor and an input

State the types of common toes deformities a, Common toes deformities are: ...

Common toes deformities are: 1. Hallux valgus: Deviation of great toe towards the second toe resulting in prominence of first metatarsal head.  Later on there is formation of

Basic concept of data parallelism, Basic Concept of Data Parallelism T...

Basic Concept of Data Parallelism Thinking the condition where the same problem of submission of „electricity bill? is Handled as follows: Again, three are counters. Howeve

Why should you use bugzilla?, Bugzilla can dramatically enhance the product...

Bugzilla can dramatically enhance the productivity and accountability of individual employees by giving a documented workflow and positive feedback for good performance.

Which address is specially used by transport layer, The addressing speciall...

The addressing specially used by Transport Layer is? The addressing particularly used through transport layer is application port address.

What do understand by the granularity of a parallel system, What do underst...

What do understand by the granularity of a parallel system ? Granularity refers to the quantity of computation complete in parallel relative to the size of the entire program. I

Planning too much up front a mistake in an oosad, You can't plan only for t...

You can't plan only for the present phase of the project as your future activities are still coarse granular. To have good planning you require to have fine granularity w.r.t the t

How transmission bridges help in satisfying the connectivity, How do tra...

How do transmission bridges help in satisfying the connectivity? A usual transmission bridge is demonstrated in figure. The series capacitance and the shunt inductances of

What is sap dispatcher, What is SAP dispatcher? SAP dispatcher is the co...

What is SAP dispatcher? SAP dispatcher is the control agent that handles the resources for the R/3 applications.

Write Your Message!

Captcha
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!

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