Random reading and writing and Closing a fcb file, Basic Computer Science

Random reading and writing and Closing a fcb file, Basic Computer Science

Assignment Help:

The 21H function and the 22H function of the 21H interruption are the ones in charge of realizing the random readings and writings in that order. The random register number and the recent block are used to calculate the virtual position of the register to read or write. The AL register gives identical information for the in order reading of writing. The information to be read will be returned on the transfer region of the disk, similarly the information to be written resides on the DTA.

To close a file we utilize the 10H function of the 21H interruption. If after calling up this function, the AL register holds the FFH value, it means that the file has altered position, the disk was altered or there is error of disk access.

Related Discussions:- Random reading and writing and Closing a fcb file

Network engenering, What role would you assign to each of the four workstat...

What role would you assign to each of the four workstation and any other equipment

Digital logic design, encoder

encoder

What is fragmentation? explain its significance, Question A What is fragme...

Question A What is fragmentation? Explain its significance Question B Briefly discuss the functions of transport layer Question C What is CIDR? Explain Question D W

Data output, Data Output : Processed data is no use to you if you cannot u...

Data Output : Processed data is no use to you if you cannot use it. Once data has been processed, you will either: (1) Send it as a data file to another system, e.g. write a fi

Discuss the challenges in it infrastructure management, Question 1 What is...

Question 1 What is difference between cathode ray tube monitors and LCD monitors? List three popular types of operating systems and give brief introduction of each type Que

Processor, The role of array processor

The role of array processor

What is a view, Question (a) What is a view? (b) Can we use a view t...

Question (a) What is a view? (b) Can we use a view to insert or update a record into a table? Do we have any limitation to perform the above command? (c) The syntax to cr

Software development, requirement analysis and specification for online vot...

requirement analysis and specification for online voting

ExtremeWhether.html, How to crete a web page name esp.html that allows user...

How to crete a web page name esp.html that allows users to conduct an ESP test

Data transmission, #quesetion..explain the concept of data transmission giv...

#quesetion..explain the concept of data transmission giving details of the transmission rate and bandwidth with details explanation of the transmission media

Write Your Message!

Name

Email id

Message

Verfication Code

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

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