Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Illustrate Header section of a device driver?
Header comprises information which allows DOS to identify the driver. It also comprises pointers which allow it to chain to other drivers loaded into the system.
Header section of a device driver is 18 bytes in length and comprises pointers and name of the driver.
Following structure of the header:
CHAIN DD -1 : link to next driver
ATTR DW 0 : driver attribute
STRT DW START: address of strategy
INTER DW INT: address if interrupt
DNAME DB 'MYDRIVER': driver name.
The first double word comprises a -1 which informs DOS this is the last driver in chain. If extra drivers are added DOS inserts a chain address in this double word as the segment and offset address. Chain address points to the subsequent driver in the chain. This enables additional drivers installed at any time.
The attribute word signifies the type of headers included for driver and the type of device the driver installs. It also signifies whether the driver control a character driver or a block device.
A piece of art can be looked at as having 3 main components, the subject, the composition and the content. Subject The subject of an artwork is, in simple terms, the object
Nonvolatile BIOS memory refers to a small memory on PC motherboards that is used to kept BIOS settings. It was traditionally known as CMOS RAM because it used a volatile, low-power
Relocatable programs? Ans. Relocatable programs can be loaded almost anywhere inside the memory.
It allows code reusability. Reusability saves time in program development. It encourages the reuse of proven and debugged high-quality software, thus decreasing problem after a sys
Subroutine are the part of implementing processes (like any process can call a subroutine for achieve task), whereas the interrupt subroutine never be the part. Interrupt subroutin
What are the events by which we can program "help texts" and display "possible value lists"? -PROCESS ON HELP-REQUEST (POH). -PROCESS ON VALUE-REQUEST (POV).
Loosely Coupled Systems These systems do not distribute the global memory because shared memory concept gives rise to the difficulty of memory conflicts, which in turn slows d
Q. What is Switched Mode Power Supply? SMPS is the unit into which electric supply from the mains is connected to your PC and this supplies DC to internal circuits. It is more
Quantifiers and Variables - propositional model: There is one question is arrives that 'What do sentences containing variables mean?' In other way of words, how does a first-o
Example of circuit switching and S&F (Stored and Forward) switching is (A) Telephone and Post of Telegraph (B) Video Signal Post or Telegraph (C) Digital Signal P
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd