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
Describe Data structures used during passes of assembler and their use. During passes of assembler, the Data structures define as: Pass 1 data base Input source pro
Q. Explain working of Digital camera? A Digital camera is a camera which captures and stores still images and video (Digital Video Cameras) as digital data in place of on photo
Q. Functions employed for messaging passing? The functions employed for messaging passing are: int MPI_Send(void *msgaddr, int count, MPI_Datatype datatype, int dest, int ta
The aim of this project is for you to construct a fully working compiler for a small simple programming language, SPL. The compiler will read in SPL source code and produce ANSI C
What is PCI bus? The Peripheral component interconnect(PCI) bus is a standard that handles the functions found on a processor bus but in a standardized format that is independe
Q. Define syntax of MPI_Scan function? MPI_Scan (Sendaddr,, Receiveaddr , count, datatype, op, comm): It merges the partial values in p final results that are received in
Q. Explain about Microprocessors? Microprocessors have instruction sets ranging from 20 to several hundred instructions, known as microprograms, which are stored in ROM to init
Software engineering is:- The application of a disciplined engineering move towards to the development of software systems. A body of information and knowledge in software d
Can the size of an array be declared at runtime? No, the size of an array can't be declared at run time, we always require to mention the dimensions of an array at
Standard Query Operators in LINQ can be used for working with collections for any of the following and more. 1. Get total count of elements in a collection. 2. Order the resu
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