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!
Illustrate about 8259
8259A adds 8 vectored priority encoded interrupts to the microprocessor. We can expand it to 64 interrupt requests by using one master 8259A and 8 slave units. CS and WR should be decoded. Other connections are direct to microprocessor.
Pins D7 - D0: the bidirectional data connection, IR7 - IR0: Interrupt request, used to request an interrupt and connect to a slave in a system with multiple 8259A.
WR:-Connects to a write strobe signal (upper or lower in a 16 bit system), RD: - Connects to IORC signal, INT: - Connects to INTR pin on the microprocessor from the master and is connected to an IR pin on a slave and INTA: - Connects to INTA pin on the microprocessor. In a system only master INTA signal is connected A0:- Selects different command words with in the 8259A, CS: - Chip select - enables 8259A for programming and control, SP/EN: - Slave Program (1 for master, 0 for slave)/Enable Buffer (controls data bus transceivers in a large microprocessor based system when in buffered mode) and CAS2-CAS0:- Used as outputs from the master to slaves in cascaded systems.
Figure: 8259 Block Diagram
Object Oriented Programming 1. Describe that in how many ways the Data can be passed to functions? Explain with the help of one example. 2. Describe how you create class a
Compare and contrast symmetric & asymmetric encryption algorithms. Your response should contain a brief overview of the cryptographic basis for every type of algorithm, and a compa
Q. Write a program to implement NOR, NAND, XOR and XNOR gates using and without using bit wise operator. Also perform necessary checking. The user has option to give n numbe
Define Cloud services with example. Any web-based application or service offered by cloud computing is known as a cloud service. Cloud services can contain anything from calend
Which method do you invoke on the DataAdapter control to load your generated dataset with data? DataAdapter.Fill(ds). The beauty of this method is it automatically implicitly
Mobile Computing 1. What is Wireless Protocol Requirements and also explain in brief medium access control protocol. 2. Illustrate FDMA and TDMA concepts. 3. What are the
Three dissimilar types of convergences are: 1. The convergence of e-commerce and wireless technology 2. The Convergence of E-Commerce and IP Business-Grade Messaging 3
Illustrated three stages of data mining process? Stage 1: Exploration: This stage generally starts along with data preparation that may involve cleaning data, selecting subse
Place some text wherever. Then click "Create path from text" in the "Text tool option" window. Then use "Edit" -> "Stroke path" and choose the appropriate options in the following
Define about Abstraction- object oriented systems Abstraction is one of the most important ideas of object oriented systems Abstraction focus on the necessary, inherent aspec
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd