Device drivers in unix, Computer Engineering

Assignment Help:

Device Drivers in UNIX, MS-DOS and Windows System

Though device drivers are in effect add-on modules they are however considered to be part of system because they are closely integrated with I/O Control System that deals with I/O related system calls. 

In UNIX device drivers are typically linked onto object code of kernel (core of operating system). This means that when a new device is to be used that was not included in original construction of operating system, UNIX kernel has to be re-linked with new device driver object code.  This scheme has advantages of run-time efficiency and simplicity however the shortcoming is the addition of a new device needs regeneration of the kernel. In UNIX every entry in /dev directory is associated with a device driver that manages communication with the related device. A list of few device names is as displayed below:

Device name         Description

/dev/console          system console

/dev/tty01              user terminal 1

/dev/tty02              user terminal 2

/dev/lp                   line printer

/dev/dsk/f03h        1.44 MB floppy drive


Related Discussions:- Device drivers in unix

Determine about the radio frequency, Determine about the Radio Frequency (R...

Determine about the Radio Frequency (RFID)  This method includes using small electronic devices containing an Identification microchip and antenna; they work in a similar way

Direct mapped cache - computer architecture, Direct Mapping: In this p...

Direct Mapping: In this particular technique, block j of the primary memory maps onto block j modulo 128 of the cache. The primary memory blocks 0,128,256,...is loaded

What are the special unit related fields and methods, What are the special ...

What are the special unit related fields and methods?   The most significant method (in fact pseudo method) related to units is get_enclosing_unit().  The mostly used field in

Post interrupts - computer architecture, Post interrupts - computer archite...

Post interrupts - computer architecture: Post interrupts Exact interrupts examine interrupt bit on entering WB Longer latency Handle immediately

What are the categories of radio communication, What are the categories of ...

What are the categories of Radio communication 1.  Sky wave or ionosphere communication 2.  Line-of-sight (LOS) microwave communication limited by horizon 3.  Troposphere

Write the binary representation of an integer number, The integer n = 3,510...

The integer n = 3,510,593 has hexadecimal representation 0x00359141 (check this with your d2h program), while the double precision, floating-point number 3510593.0 has hexadecimal

Handling multiple devices - computer architecture, Handling Multiple Device...

Handling Multiple Devices Interrupt Priority   Continue to accept interrupt requests from higher priority components   Disable interrupts from component at the sa

Linq file extension, What is the LINQ file extension that interacts with Co...

What is the LINQ file extension that interacts with Code Behind objects. Ans) its .dbml

How u can create xml file, How u can create XML file? To write Dataset ...

How u can create XML file? To write Dataset Contents out to disk as an XML file use: MyDataset.WriteXML(server.MapPath("MyXMLFile.xml"))

Write a c++ program to explain three specific classes, Make a base class ca...

Make a base class called figure that store the dimensions of several geometrical objects and compute their areas. Explain a function set_dim( ),a standard member  function and show

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