Define strategy procedure, Computer Engineering

Assignment Help:

Q. Define Strategy Procedure?

The strategy procedure is called when loaded into memory by DOS or whenever controlled device request service. The major purpose of the strategy is to save request header and its address for use by interrupt procedure.

The request header is used by DOS to communicate commands and other information to interrupt procedure in the device driver.

The request header comprises length of the request header as its first byte. This is essentialsince the length of request header differs from command to command. The return status word communicate information back to DOS from device driver.

The initialise driver command (00H) is always executed when DOS initialises device driver. Initialisation commands pass message to video display indicating that driver is loaded into system and returns to DOS the amount of memory required by the driver. You can only use DOS INT 21H functions 00H.


Related Discussions:- Define strategy procedure

What is pointers function, Visual basic applications have very rich and fle...

Visual basic applications have very rich and flexible applications but there is single limitation when using pointer function. Windows API has limited support for function pointers

What is arithmetic pipeline, What is arithmetic pipeline?  Pipeline ari...

What is arithmetic pipeline?  Pipeline arithmetic units are usually found in very high speed computers. They are used to execute floating point operations, multiplication of fi

Non repudiation, What is non-repudiation? how can it be achieved in designi...

What is non-repudiation? how can it be achieved in designing e-cash based system?

Cse 320, Explain the functionality of the quadrant approach in the Spiral M...

Explain the functionality of the quadrant approach in the Spiral Model ?

Describe about micro-controllers, Q. Describe about Micro-controllers? ...

Q. Describe about Micro-controllers? Micro-controllers: These are a specialized device controlling computer which comprises every function of computers on a single chip. Chip

Explain working of digital versatile disk, Q. Explain working of Digital Ve...

Q. Explain working of Digital Versatile Disk? With the capacious digital versatile disk (DVD) electronics industry has ultimately found an acceptable replacement for videotape

NETWORK ADMIN, Discuss the risks of having a single root user and how more ...

Discuss the risks of having a single root user and how more limited management abilities can be given to others users on Linux/UNIX systems.uestion #Minimum 100 words accepted#

Explain 100 line exchange with selector finder, Explain 100 line exchange w...

Explain 100 line exchange with selector finder. Design: In place of 100 two-motion selectors as in the case of Design 3, suppose we consider only 24 two-motion selectors. Whe

How many methods used to control traffic flowing in-out, How many methods u...

How many methods used to control traffic flowing into and out of the network by firewall? Firewalls utilize one or more of three ways to control traffic flowing into and out of

Rpn procedure, Apply this algorithm to your MASM program 1) Declare the ...

Apply this algorithm to your MASM program 1) Declare the following variables in your data segment: .data ; ; These are the values of the variables ; Variables

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