Introduction to FCB , Basic Computer Science

Assignment Help:
There are two kinds of FCB, the normal, whose length is 37 bytes and the
expanded one of 44 bytes.
The FCB is created of data given by the programmer and by
data which it takes directly from the operative system.
When these types of files are used it is only achievable to work on the current
directory since the FCBs do not give sport for the use of the organization by directories of DOS.
The FCB is created by the following fields:
POSITION LENGTH sense
00H 1 Byte Drive
01H 8 Bytes File name
09H 3 Bytes Extension
18H 8 Bytes Reserved
20H 1 Bytes Current register
21H 4 Bytes Random register
0CH 2 Bytes Block number
0EH 2 Bytes Register size
10H 4 Bytes File size
14H 2 Bytes Creation date
16 H 2 Bytes Creation hours
To choose the work drive the next format is followed: drive A = 1; drive B
= 2; etc. If 0 is used the drive life form used at that instant will be taken as
option.
The name of the file must be defensible to the left and for fear that it is
essential the remaining bytes will have to be filled with gaps, and the
extension of the file is placed the same method.

Related Discussions:- Introduction to FCB

REMOTE DESKTOP, I WANT TO CONNECT A PC WIYH MY PC THROUGH REMOTE DESKTOP. W...

I WANT TO CONNECT A PC WIYH MY PC THROUGH REMOTE DESKTOP. WHAT I DO TELL ME PLEASE

Ip addressing assignment help, An IP address consists of 4 contiguous octet...

An IP address consists of 4 contiguous octets and is generally written in Dotted Decimal Notation in the form: A.B.C.D Where: A represents the most significant octet, D the leas

Depth first search-artificial intelligence, Depth First Search-Artificial i...

Depth First Search-Artificial intelligence: Depth first search is  similar to breadth first, except that things are added to the top of the plan rather than the bottom. In our

Systems software, Systems Software: Systems software is generally supp...

Systems Software: Systems software is generally supplied by the hardware manufacturers. It includes operating systems, assemblers, compilers, and interpreters (to convert prog

Properties of Dictionary Keys, Dictionary values encompass no limitations. ...

Dictionary values encompass no limitations. They can be any random Python object, moreover standard objects or user-defined objects. Though, same is not true for the keys. There ar

What is Kernel-Level Thread in operating system?, In this technique, the ...

In this technique, the kernel knows about and handles the threads. No runtime system is required in this case. In place of thread table in each process, the kernel has a thread tab

Data mining, Process of Data mining Data mining is an iterative process t...

Process of Data mining Data mining is an iterative process that typically involves the following phases: Problem definition A data mining project starts with the understanding o

Artificial intelligence-intelligence performanc of computer , "Just how are...

"Just how are we capable to get a computer to performe intelligent tasks?" One thing to answer the question is to tell that: Logic generate a science out of many forms of re

Computer definition ., what is the short and complete definition of compute...

what is the short and complete definition of computer

Define z-transform of sequence x[n], QUESTION (a) Define z-transform o...

QUESTION (a) Define z-transform of sequence x[n]. (b) A causal LTI system has impulse response h[n], for which the z-transform is                     H(z) = (1+z -1

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